AudioNervosa

Systemic Development => Speakers => Topic started by: HAL on October 14, 2017, 10:48:28 AM

Title: The Monolith open baffle planar array
Post by: HAL on October 14, 2017, 10:48:28 AM
Now that GR-Research and the Parts-Express folks have the new Neo3 and Neo10 planar drivers again, back to The Monolith speaker design.

The baffle has the 45 degree wing, but needs felt to work correctly, so making the angle lower as Danny has suggested is the better way to go.  The future is going to work toward the 10 degree version with the GR-Neo3 and PE Neo10 planars.

The 3x8" OB H-Frames are built and next will be installing the drivers and connection to the Rythmik HX300 amps. 

The dspMusikLCD will be the digital crossover and entire interface for the system to DC coupled amps the HX300 servo amps with balanced connections. 

Picture is with the OB planars on two of the modular 2x12's for The Megaliths.  Both OB servo sub arrays work well with the planars as it is easy to change levels to each amp with the dspMusikLCD.
Title: Re: The Monolith open baffle planar array
Post by: richidoo on October 14, 2017, 04:50:59 PM
Looks cool Rich!

Is it one tweeter and one mid per side as pictured? Are these OB like the bass?
Title: Re: The Monolith open baffle planar array
Post by: S Clark on October 14, 2017, 05:20:25 PM
Honestly, I've always wondered why Danny hasn't done this in a kit??? It seems like such a no-brainer. 
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 14, 2017, 09:04:52 PM
Rich,
Yes, one BG Neo3-PDR and Neo10 per side in a winged open baffle with 3x8" servo subs in an OB H-Frame.  Three way digital crossover.   

Scott,
My understanding is it was to be a Serenity Acoustics design.  When the BG to Christie sale occurred, no one could get drivers. We all gave up when that happened.  I built prototypes with Danny, Ruben and Ben's help of a two piece design, but had to put it away thinking it would not happen again until Danny and PE got new BG drivers. 

Now if someone wants to build baffles, I have a dspMusikLCD crossover for them.  If folks ask Danny now, he might do a kit with one of his passive crossovers that always sound great.   He now has the GR Neo3's available. 

This was my prototype to try the BG drivers in an open baffle and that led to The Megaliths after hearing Danny's Line Force speakers with you.  I think the OB H-Frame will be better than the U-Frame I was using before.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 16, 2017, 09:53:46 AM
The new GR Neo3 and PE BG Neo10 planars have arrived. 

Should have them installed later this week and make measurements for the updated dspMusikLCD crossover.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 18, 2017, 01:58:57 PM
GR Neo3's and PE BG Neo10's are here.

Time to install them and make measurements.
Title: Re: The Monolith open baffle planar array
Post by: AJ Soundfield on October 18, 2017, 06:46:49 PM
Those drivers should make for some nice sound
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 18, 2017, 07:13:28 PM
They do.  Just trying to improve design the baffle at this point.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 20, 2017, 07:07:07 PM
The first of two Parasound Halo A23's arrived today.   Should have the second for testing next week with the Monoliths for triamping them.  The Rythmik HX300 servo amps for the 3x8" sub open baffle H-Frames are here.

Title: Re: The Monolith open baffle planar array
Post by: HAL on October 21, 2017, 12:39:15 PM
Test open baffle and GR Neo3 version planars.  Original Neo10 installed in the baffle in pics
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 21, 2017, 01:39:42 PM
The Monolith test baffle with the new GR Neo3 and BG Neo10 installed. Next for some wiring and checkout.
Title: Re: The Monolith open baffle planar array
Post by: richidoo on October 21, 2017, 02:05:34 PM
Nice!

You got a CNC?

Do the new drivers sound and measure as good as the old ones?
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 21, 2017, 02:13:41 PM
Rich,
No, but Ben who built these does.  That was probably 2 years ago before Christie Digital bought BG and stopped production until this year.

Measurements are next to see how things go.  I expect the GR Neo3 to be different, since it is no a PDR version as made, but the Neo10 should be the same as before.
Title: Re: The Monolith open baffle planar array
Post by: doug s. on October 21, 2017, 10:38:10 PM
are you going to install the yarn in the outside rows of the tweet, per danny's instructions?

doug s.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 22, 2017, 05:32:35 AM
Yes, going to install the yarn after the first set of measurements.   

They are basically stock Neo3's at this point with the new diaphram material.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 22, 2017, 07:10:05 AM
The planar mid and tweeter are wired and ready for testing. The 14awg polyolefin insulated wiring has been very easy to work with for the drivers.

Now to connect up to the Parasound A23 and see if we let out any magic smoke. If not, measurements.

Next is wiring up the two 3x8" servo sub arrays and HX300 amps.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 22, 2017, 12:42:59 PM
The open baffle planar top sitting on the 3x8" OB H-Frame cabinet for measurements.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 22, 2017, 05:59:20 PM
Pocket CLIO measurements system with calibrated mic is running the Parasound Halo A23 amp for OB Planar measurements is alive and well. 

Now to find a spot in the room for low reflections for farfield measurements.
Title: Re: The Monolith open baffle planar array
Post by: doug s. on October 22, 2017, 06:14:25 PM
Pocket CLIO measurements system with calibrated mic is running the Parasound Halo A23 amp for OB Planar measurements is alive and well. 

Now to find a spot in the room for low reflections for farfield measurements.
how about outside?

doug s.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 22, 2017, 06:16:19 PM
Possible if Tuesday is a nice day. 
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 23, 2017, 01:59:32 PM
Figured out how to make the measurements and be portable.

Time to break out the Parasound Zamp V.3 with Pocket CLIO and calibrated mic!  Very portable stereo amp with the capabilities needed.

Been windy today, so will try tomorrow morning after temp goes up.


Title: Re: The Monolith open baffle planar array
Post by: HAL on October 23, 2017, 02:40:50 PM
Second test baffle with the original GR Neo3-PDR and BG Neo10 installed and wired for testing.

Pocket CLIO and Parasound Zamp V.3 with the calibrated mic should work well.  Just need the wind and weather to be better tomorrow.

Title: Re: The Monolith open baffle planar array
Post by: HAL on October 24, 2017, 04:02:20 AM
The measurement setup with the open baffle Neo3 and Neo10 is running and now to see if weather is good for outdoor measurements.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 24, 2017, 02:34:29 PM
Weather was good today so setup the measurement system outside with the ob planar baffle on the deck.  Still have some bugs to work out, so will try again tomorrow.

 
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 25, 2017, 05:21:31 AM
Discovered something I had forgotten.

The tweeters in these baffles are BG Neo3-PDR's not the GR versions.  The pair of GR versions went to a person wanting to build another GR speaker system that needed those. 

Weather looks good so will try another round of measurements today.  Found out the connection terminals on the Neo3-PDR were to close to the rivets and shorting out.  Dropped the tweeter level way down, so now insulation is on the rivets to stop that from happening. 

Just got the msg that the second Parasound Halo A23 amp arrives today to power the Monolith planar system.  :)
Title: Re: The Monolith open baffle planar array
Post by: rollo on October 25, 2017, 09:34:16 AM
Looking good Hal


charles
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 27, 2017, 07:37:40 AM
The balanced input ChipAmps are getting setup for the Neo3 and Neo10 planars for trials.  Connectors for the HX300 servo amp on the way.

Have a suggestion for an improvement after the first set of measurements.  Will be trying that soon.

Now to get ready for CAF2017!  Not showing, so get to listen and hang out with friends! :)
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 30, 2017, 03:06:54 PM
The new idea is prepped and ready to try next time the weather is good for measurements. 
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 31, 2017, 03:47:28 AM
Pictures of the modular 2x12 open baffle H-Frames cabinets dry fitted before packing and shipment to me for glue-up and speaker install.

Connectors and wire are here, so will be doing this after CAF2017 this week.

Hope to see folks at the show in Rockville, MD 3-5 Nov at the Hilton.
Title: Re: The Monolith open baffle planar array
Post by: HAL on November 08, 2017, 11:25:05 AM
Modified the first GR Neo3 planar tweeter today for the Monolith speakers.

Next will be measurements once the rain is passed and dried up for an outside setup.
Title: Re: The Monolith open baffle planar array
Post by: HAL on November 09, 2017, 12:30:32 PM
The weather was good today, so did measurement tests with the moded GR Neo3 and new production BG Neo10 on my test baffle. 

These were far field gated time measurements on tweeter center axis using Pocket CLIO and calibrated mic.

Now to build a digital crossover and see what happens. 
Title: Re: The Monolith open baffle planar array
Post by: HAL on November 14, 2017, 02:32:53 PM
The two modular 2x12 open baffle H-Frame flat packs arrive Friday.  Will start glue-up this weekend.

Will be talking to the paint finishing group on Friday as well and see a test finish on a modular cabinet.

The new planar test baffles are looking good and now to wait for the flat packs to be done.
Title: Re: The Monolith open baffle planar array
Post by: HAL on November 16, 2017, 02:12:30 PM
Just to document the wiring scheme for the Rythmik HX300 servo amp wiring:

Wire with heat shrink is the driver coil connections to Speakon, 1- Yellow = -, and 1+ Black = +

Wire without heat shrink is the servo coil connections to Speakon, 2 - Yellow = -, and 2 + Black = +

Have the TRS to miniXLR cables ready to try with the dspMusikLCD.

Wiring to the 8 dspMusikLCD DAC's to the amp channels will be:

Outputs 1 = GR Neo3 tweeter, 3 = BG Neo10 midrange, 5 = GR servo sub are left channel connections (top TRS connectors)

Outputs 2 = GR Neo3 tweeter, 4 = BG Neo10 midrange, 6 = GR servo sub are right channel connections(bottom TRS connectors)

Outputs 7 left and 8 right are direct wired input to DAC channels for use with a headphone amp or extra subs if time delay is added.

If you need RCA connectors, then TRS to dual RCA connectors can be used and the right channel (red) output is the + polarity for each channel.
Title: Re: The Monolith open baffle planar array
Post by: HAL on November 21, 2017, 05:48:35 AM
The 4 - GR-Research SW-12-16FR servo drivers will be here today.  All the rest of the parts are here, so will be time to start building them over the holidays. 

Will see what these sound like with the OB Neo3/Neo10 baffles.  Already wired and ready to go with two of the ChipAmp style balanced input amps with the dspMusikLCD driving them.

Title: Re: The Monolith open baffle planar array
Post by: HAL on November 22, 2017, 04:25:51 AM
Got the 4 servo drivers yesterday and now everything is in storage until after the holidays.

Will post pictures of the build process as it goes on.
Title: Re: The Monolith open baffle planar array
Post by: HAL on November 22, 2017, 06:41:21 PM
The Monolith build will be on hold to late January, 2018 as it is time to start working on the next update to The Megaliths with the 16 channel dspMusikLCD arriving early Dec. 

Now off to doing the next version of the digital crossover.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 02, 2018, 11:39:55 AM
Starting the build of the two 2x12 modular H-Frame servo sub flatpack builds.

The shipping box contains parts for one 2x12 and extremely well packed to protect against shipping gorillas. The flat packs have all the parts and very well packed from Jay and Don. Just supply glue and clamps.

New bottle of Titebond III glue like I used on the 6x12's awhile back.

Unpacked and time to let the Medex come to room temperature before gluing.

The first set of GR-Research SW-12-16FR servo sub drivers are unboxed from the main box for the individual boxes for protection.

Wiring for the Rythmik Audio HX300 servo amps are done, Just have to wire the drivers to Speakon connectors..
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 04, 2018, 10:56:04 AM
First 2x12 H-Frame modules built and test fit with the top and bottom. 

Once snomageddon is over will get the other box out of storage and build it up.

Title: Re: The Monolith open baffle planar array
Post by: HAL on January 06, 2018, 03:52:11 AM
Modules #3 and #4 are complete.  Will be time today to test fit the drivers and setup the wiring.

Title: Re: The Monolith open baffle planar array
Post by: HAL on January 06, 2018, 04:47:34 AM
The two 2x12 H-Frames are completed.  Time for driver install and wiring harness.  Then some testing.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 06, 2018, 02:24:53 PM
Drivers installed in one 2x12 and wiring started.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 07, 2018, 06:22:46 AM
Drivers installed and wiring for the speakers is done. Now for some testing.

Will be using a dspMusikLCD 2x8 for both measurements and testing for the digital crossover for The Monoliths.
Title: Re: The Monolith open baffle planar array
Post by: richidoo on January 07, 2018, 11:46:37 AM
What's the difference between monoliths and megaliths?

This 2 driver bass module goes with the monoliths, right?
Will the monolith tops go on top of it, or separate like megaliths?
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 07, 2018, 11:56:28 AM
The Monoliths are the single GR Neo3 and BG Neo10 in an open baffle top that sits on the 2x12 servo subs.  Will post a picture of the prototype shortly.

The Megaliths are the open baffle planar/ribbon line arrays with the 6x12 servo subs. 
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 07, 2018, 01:47:45 PM
Setup the new measurement system for the 2x12 servo subs using Room EQ Wizard driving the dspMusikLCD from my PC Netbook. This is very similar to me running it with the MS-3 Music Server. 

REW's latest beta software added ASIO drivers running at 24bit/192KHz that work correctly with the dspMusikLCD.  Nice easy setup for the system.

Using the Earthworks M550 calibrated Omni and 1021 mic preamp for input to the dspMusikLCD.  Works very well with an extremely short impulse response for a measurement mic. 

Tried a ground plane measurement with success and next some nearfield measurements to compare.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 07, 2018, 02:16:40 PM
Rich,
Here is my prototype of The Monoliths.  The open baffle planar section will probably change, but good enough to start the full design.  They will be mirror image pairs. 
Title: Re: The Monolith open baffle planar array
Post by: richidoo on January 07, 2018, 07:44:52 PM
Oh yeah, I remember those.

Boy the Neo10 is huge!  I don't know why I thought it was smaller, but never seen it in context like that your picture. That's what you need to get down to 200Hz.

What's the advantage of measuring with ground plane mic?
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 07, 2018, 08:01:17 PM
For subs it minimized room effects on measurements.  Should really be a hard surface for the mic for it to work correctly.  That was to test the system was working and it is.

Did a nearfield measurement of the upper woofer to check and it works, so Room EQ Wizard at 24bit/192KHz will now be a standard install for dspMusikLCD systems on the MS-3.  Very simple measurement suite to help dial in a system using the same hardware as the crossover.



Title: Re: The Monolith open baffle planar array
Post by: HAL on January 08, 2018, 06:36:58 PM
The second 2x12 H-Frame is loaded with servo drivers and ready for wiring.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 09, 2018, 07:08:28 AM
Wiring done and tested.  Both subs are done and working!


Title: Re: The Monolith open baffle planar array
Post by: HAL on January 11, 2018, 11:53:46 AM
My HX300-8OB sub amps are off to Rythmik Audio to be moded to HX300-12OB for the 2x12 use.  The EQ for the open baffle changes significantly between the two size drivers.

Hope to have them back late Jan for use.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 19, 2018, 04:43:05 AM
The update from Rythmik Audio today is they have received the HX300-8OB for mod to HX300-12OB and should be completed and shipped by Monday.

Should have them next week and start new measurements to complete the dspMusikLCD digital crossover design.


Title: Re: The Monolith open baffle planar array
Post by: rollo on January 19, 2018, 10:34:15 AM
Cool stuff Hal keep it coming.


charles
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 19, 2018, 12:29:14 PM
Hoping for some massive news next week!  This should be interesting!   :thumb:
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 20, 2018, 07:45:11 AM
Have a pair of Parasound Halo A23 stereo amps ready for the open baffle planar top when the HX300-12OB amps arrive for a triamp setup with the dspMusikLCD digital crossover being used with the MS-3 for the entire system to run The Monoliths.  The A23's sound great with the line arrays, so going in this system for trials as well.

The dspMusikLCD will allow time alignment of the top baffle and sub drivers using time delay for the top to match the subs.  This allows both wavefronts to align correctly. 

Still more news next week.   :D
Title: Re: The Monolith open baffle planar array
Post by: Nick B on January 20, 2018, 08:42:13 PM
Have a pair of Parasound Halo A23 stereo amps ready for the open baffle planar top when the HX300-12OB amps arrive for a triamp setup with the dspMusikLCD digital crossover being used with the MS-3 for the entire system to run The Monoliths.  The A23's sound great with the line arrays, so going in this system for trials as well.

The dspMusikLCD will allow time alignment of the top baffle and sub drivers using time delay for the top to match the subs.  This allows both wavefronts to align correctly. 

Still more news next week.   :D


Rich,
Regarding the time delay aspect, does the software make the adjustment automatically or do you do it manually?
What time frame would that usually be? Is this measured in milliseconds?
Nick
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 21, 2018, 08:01:55 AM
Nick,
There is a delay built in to offset the head sitting.on the sub. 

It is a fraction of a millisecond.  Actually measured in time samples.  The resolution is 0.071" for.each time sample.  It can be modes when programmed, but at this time not user adjustable.  There is software in work for updates by the user.  That is tbd.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 30, 2018, 06:41:59 PM
The Rythmik Audio HX300-12OB servo amps arrived today and now installed with the subs.

Tomorrow will be testing with the dspMusikLCD 2x8 and see what happens.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 31, 2018, 07:02:10 AM
The HX300-12OB servo amps are up and running with the 2x12 H-Frame subs.  With pink noise, they make some very nice low frequency rumble and broadband bass, but no boom. 
Title: Re: The Monolith open baffle planar array
Post by: rollo on January 31, 2018, 11:49:36 AM
Excellent Hal. My bet better than the mega four or six pack pack per side.


charles
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 31, 2018, 04:24:49 PM
Oh, the 6x12's working correctly will easily outperform the 2x12's.  They need to be on concrete though for structural reinforcement. 
Title: Re: The Monolith open baffle planar array
Post by: HAL on February 01, 2018, 10:36:25 AM
Next stage of the testing.  Add the OB planar top and see how it works.

The dspMusikLCD 2x8 crossover it working and now to make some new measurements with CLIO Pocket. 
Title: Re: The Monolith open baffle planar array
Post by: HAL on March 05, 2018, 05:10:44 AM
The new GR Neo3 and BG Neo10 open baffle planar top flat packs are on the way along with the new HX300 amp boxes.  Hope to have them by next week for install and testing.  A new pair of GR Neo3's are here for mod to install once the baffles are built.

Once these are built, the 2x12's and dspMusikLCD crossover will be setup for frequency response testing with the triamp setup.



Title: Re: The Monolith open baffle planar array
Post by: HAL on March 23, 2018, 11:18:07 AM
The new HX300 amp boxes are here from Jay.  Time for some gluing.
Title: Re: The Monolith open baffle planar array
Post by: HAL on March 24, 2018, 05:05:09 PM
Here are the flat pack parts for an HX300 servo amp box. Nicely cut and easy to glue with the biscuits.

Takes less than 10 minutes for me to glue and clamp. Then let dry overnight and ready to apply a finish.
Title: Re: The Monolith open baffle planar array
Post by: HAL on March 25, 2018, 05:11:28 AM
HX300 box #2 glued and clamped. Let it dry today and then ready for a finish.
Title: Re: The Monolith open baffle planar array
Post by: HAL on April 08, 2018, 03:03:09 PM
Latest pictures of The Monoliths new planar baffles from Jay. Also one with the servo subs.

Finished HX300 amp boxes with an HX300 test fit.

Looking forward to building these when the flat packs arrive!
Title: Re: The Monolith open baffle planar array
Post by: dBe on April 08, 2018, 09:12:33 PM
Latest pictures of The Monoliths new planar baffles from Jay. Also one with the servo subs.

Finished HX300 amp boxes with an HX300 test fit.

Looking forward to building these when the flat packs arrive!
Does Jay do great work or what!?!  What a nice guy, too.  :thumb:
Title: Re: The Monolith open baffle planar array
Post by: rollo on July 18, 2018, 01:05:27 PM
  Nice Hal.


charles
Title: Re: The Monolith open baffle planar array
Post by: HAL on July 18, 2018, 02:47:12 PM
Thanks Dave and Charles,

Here are the updated baffles from Jay with much improved frequency response.

They are ready for testing and then a set of baffle cut to build up.
Title: Re: The Monolith open baffle planar array
Post by: doug s. on July 18, 2018, 03:47:20 PM
Thanks Dave and Charles,

Here are the updated baffles from Jay with much improved frequency response.

They are ready for testing and then a set of baffle cut to build up.
i like the way you've radiused the sides of the tweeter cut-outs...

doug s.
Title: Re: The Monolith open baffle planar array
Post by: HAL on July 18, 2018, 05:32:57 PM
doug s,

It is a waveguide from the design and testing point for the planar tweeter.  Does a very good job with the GR Neo3.

Title: Re: The Monolith open baffle planar array
Post by: HAL on August 31, 2018, 01:22:40 PM
The Monoliths flat packs have arrived and been unpacked. 

Glue-up has started.

Title: Re: The Monolith open baffle planar array
Post by: HAL on August 31, 2018, 02:06:18 PM
Glue-up has begun.

Started with the short side wing and small clamps.  Glue and let set.

Attach bottom plate to baffle and short side wing with glue and clamp let it set.

After that will attach the long side wing with glue and let it set over night.
Title: Re: The Monolith open baffle planar array
Post by: HAL on August 31, 2018, 03:29:06 PM
Baffle #1 is glued and drying. Will let it set overnight and glue baffle #2.
Title: Re: The Monolith open baffle planar array
Post by: HAL on September 01, 2018, 10:23:15 AM
Baffle #2 is glued and drying.  Let them fully dry for 24 hours and then install the planars to start testing with the dspMusikLCD 2x8.
Title: Re: The Monolith open baffle planar array
Post by: HAL on September 01, 2018, 02:12:11 PM
First look at the new planar baffle on the 2x12" servo sub base.

Once the second baffle glue dries tomorrow, will install the drivers.
Title: Re: The Monolith open baffle planar array
Post by: HAL on September 03, 2018, 03:35:02 PM
Had the BG Neo3-PDR's and BG Neo10's out of the original open baffles and installed one set in the new open baffle today with wiring to get ready for testing. Will be installing the planars in baffle #2 soon.

Will compare them to the GR-Neo3 as well along the way. If it is just sensitivity differences, easy to adjust for it in the digital crossover.
Title: Re: The Monolith open baffle planar array
Post by: HAL on September 06, 2018, 07:38:05 PM
Got both of The Monoliths running today and will be doing listening trials over the next few days.

Title: Re: The Monolith open baffle planar array
Post by: HAL on September 08, 2018, 02:07:03 PM
The Monoliths are sounding very good and still some measurements to go.

These will be going to CAF2018 after getting the finish done.

Title: Re: The Monolith open baffle planar array
Post by: Nick B on September 08, 2018, 02:52:51 PM
The Monoliths are sounding very good and still some measurements to go.

These will be going to CAF2018 after getting the finish done.

Just curious...how much of a break in is involved with these?
Title: Re: The Monolith open baffle planar array
Post by: HAL on September 08, 2018, 08:06:21 PM
I will let you know when they have more time on them.   Sounds good with only a few hours on them so far. 

Title: Re: The Monolith open baffle planar array
Post by: doug s. on September 08, 2018, 08:12:07 PM
i am looking forward to hearing these at the caf.

doug s.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 02, 2018, 08:53:08 AM
Took about 50 hours of play to get the planars and woofers to sound their best. 

Luckily a lot of that was music and not just test signals! :)

The Monoliths speakers for CAF2018 are this set, so will be ready for the first day. 

Waiting on the finish to be completed. 
Title: Re: The Monolith open baffle planar array
Post by: Nick B on October 02, 2018, 09:26:50 AM
Took about 50 hours of play to get the planars and woofers to sound their best. 

Luckily a lot of that was music and not just test signals! :)

The Monoliths speakers for CAF2018 are this set, so will be ready for the first day. 

Waiting on the finish to be completed.

Congrats 👍
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 04, 2018, 04:24:28 PM
First picture of The Monoliths open baffle planar top after finishing.  I like it! :)



Title: Re: The Monolith open baffle planar array
Post by: HAL on October 13, 2018, 12:19:34 PM
The modular servo subs and HX300 amp cabinets are finished and ready to get the drivers, amps and wiring installed.

Also got a nice front picture of the open baffle top before Jay packed them and now on the way.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 15, 2018, 11:05:36 AM
Servo subs ready for check-out.   

Title: Re: The Monolith open baffle planar array
Post by: rollo on October 15, 2018, 12:58:54 PM
Looking great Hal.

charles
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 15, 2018, 01:35:43 PM
Charles,
Thanks.  See you at CAF.
Title: Re: The Monolith open baffle planar array
Post by: HAL on October 18, 2018, 09:17:18 AM
The Monoliths in final form for CAF2018.

System is wired and getting ready to do some listening.

Title: Re: The Monolith open baffle planar array
Post by: HAL on November 10, 2018, 06:26:32 AM
Greg Weaver for EnjoyTheMusic.com got to stop by at CAF2018 for a listen.  Here is his show report section with The Monoliths.

http://www.enjoythemusic.com/Capital_Audiofest_2018/page3.htm
Title: Re: The Monolith open baffle planar array
Post by: P.I. on November 10, 2018, 12:43:15 PM
Greg Weaver for EnjoyTheMusic.com got to stop by at CAF2018 for a listen.  Here is his show report section with The Monoliths.

http://www.enjoythemusic.com/Capital_Audiofest_2018/page3.htm
great review, Rich!  Good onya’.   :thumb:
Title: Re: The Monolith open baffle planar array
Post by: doug s. on November 10, 2018, 01:37:58 PM
unfortunately, i only got to spend a few hours on sunday at this year's caf.  but i made certain to stop by this room.  i was very impressed w/the sound >100hz - especially since the room seemed a mite large for the set up.  but, for me, i'd opt for a traditional pair of the rythmik subs; maybe something along the lines of their f25.  i'd think it wouldn't cost any more; maybe the same or less, if they were home-grown like the open-baffle subs made for this system.  i simply don't care for the rythmik based o-b subs i've heard.  last year, i was so looking forward to hearing the gt audio planar ribbon rig w/the rythmik custom 6 driver per side sub set up.  it was a major disappointment to me.  nothing i'd be interested in listening to at any price, let alone what that system retails for.  soundstaging was non-existent, just a diffuse mess.  not at all detailed.  and the bass (and everything else) was better in the pureaudioproject room, w/their open-baffle horns and two 15" drivers per side.  bigger room, too; and i overheard some folks last year talking about "best in show" sound from the gta/rythmik room?  (this year's puraudioproject/vpi room was also nice; better than the wilson/vpi room next-door, which was a better sized room, and the wilson alexx's are ~12.5x the price of the p/a/p's; and the amp/pre electronics were also similarly more expensive.)

i didn't even bother to hear the gta system this year cuz my time was limited, and i figured, it would sound the same, tho in fairness, part-time-audio said this year's sound in the gta room was much improved over last year's.

in any event, i think hollis audio labs and danville signal are really on to something; and, being custom designers, i'm sure they would brew up whatever you please.

doug s.
Title: Re: The Monolith open baffle planar array
Post by: HAL on November 10, 2018, 01:46:34 PM
Thanks Dave!

It was a team effort! :)

doug s, you should have heard the GTA room this year.  The two OB 6x12's were actually working correctly this time!  They fixed the problem they had last year.  I have the same OB 6x12's in my listening room that I built and now they sound the same.  They did not last year.
Title: Re: The Monolith open baffle planar array
Post by: doug s. on November 10, 2018, 02:37:32 PM
Thanks Dave!

It was a team effort! :)

doug s, you should have heard the GTA room this year.  The two OB 6x12's were actually working correctly this time!  They fixed the problem they had last year.  I have the same OB 6x12's in my listening room that I built and now they sound the same.  They did not last year.
aha!  so, i wasn't deaf!  and, everyone who said it sounded so good last year was just bowled over by how it looked, cuz it sure looked like it should sound good! :lol:

and again, in fairness to your system this year, it's possible that the two driver per channel subs were simply not enough to drive the big room you were in, because the rest of your system's sound was top-notch, imo.

maybe next year...

doug s.
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 01, 2019, 05:49:59 PM
Happy New Year 2019!

A nice review from audiohead about the HAL room at CAF2018.

https://audio-head.com/hollis-audio-labs-caf-2018/
Title: Re: The Monolith open baffle planar array
Post by: Nick B on January 01, 2019, 08:01:19 PM
Happy New Year 2019!

A nice review from audiohead about the HAL room at CAF2018.

https://audio-head.com/hollis-audio-labs-caf-2018/

Congrats, Rich! Nice write up. By the way, are you one of the guys in that photo?
Nick
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 02, 2019, 08:52:14 AM
Nick,
Thanks!

Yes, the guy in the white shirt.

Rich
Title: Re: The Monolith open baffle planar array
Post by: P.I. on January 02, 2019, 11:07:52 AM
Nick,
Thanks!

Yes, the guy in the white shirt.

Rich
Rich, great review of your room.  Very cool!

Aren’t those diffusers from Greg?
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 02, 2019, 11:27:42 AM
Dave,
Those are the diffusors you sent me probably in 2009-2010 time frame.   

Rich
Title: Re: The Monolith open baffle planar array
Post by: HAL on January 04, 2019, 02:22:39 PM
Two very nice pictures of the HAL room at CAF2018 by Paul Elliot.
Title: Re: The Monolith open baffle planar array
Post by: Nick B on January 04, 2019, 09:01:41 PM
Two very nice pictures of the HAL room at CAF2018 by Paul Elliot.

Very nice indeed! Your hard work has been rewarded
Title: Re: The Monolith open baffle planar array
Post by: HAL on March 26, 2019, 12:48:28 PM
Another show report from CAF2018 by TNT-Audio about the HAL demo room.  The info is about 1/2 way down the page.

Thanks to KLH007 for spotting it and sending the link.

https://www.tnt-audio.com/shows/capital_audiofest18_e.html
Title: Re: The Monolith open baffle planar array
Post by: HAL on March 29, 2019, 07:53:22 AM
The Monoliths system is setup in the new listening space. 

Did measurements and updates based on them and the system sounds really good.   It is ready for demos. 

PM me if interested.
Title: Re: The Monolith open baffle planar array
Post by: Brap on March 29, 2019, 09:57:56 AM
Gerrard vs Garrard?   :rofl:
Title: Re: The Monolith open baffle planar array
Post by: HAL on March 29, 2019, 11:53:48 AM
What does that mean?
Title: Re: The Monolith open baffle planar array
Post by: Brap on March 29, 2019, 01:56:51 PM
The spelling in the sign advertising the price for the 301 turntable.  Third picture down.
Title: Re: The Monolith open baffle planar array
Post by: HAL on March 29, 2019, 03:08:47 PM
Well at least the reviewer got it correct in his write-up for that room.

Title: Re: The Monolith open baffle planar array
Post by: tmazz on March 30, 2019, 08:05:31 PM
Rich,

Your Monoliths were very good sounding at CAF, in spite of the crappy hotel environment you had to deal with.

I can imagine that hearing them set up in a proper acoustic space must be a real treat.  :thumb:
Title: The Monolith open baffle planar array
Post by: FannieHoimb on July 24, 2019, 06:13:57 AM
Hey Guys,  what is the purpose of the cross in the speaker baffle speaker cutouts on this mid 60s Harmony amp?  Does it act like a beam blocker or is it there for support? Just wondering.

_____
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Title: Re: The Monolith open baffle planar array
Post by: HAL on July 24, 2019, 07:05:09 AM
Do you have a picture of the amp?
Title: Re: The Monolith open baffle planar array
Post by: HAL on August 16, 2019, 05:44:04 AM
One advantage of having a dspMusik crossover is that with speakers like The Monoliths, you can place the planar tops and servo subs in different positions in the room and use time delay to adjust for the distance offsets.

This way if you get better bass response with the subs in different positions than the planar mains, it can be compensated.