Author Topic: diy subs? (and other speakers...)  (Read 2501 times)

Offline doug s.

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diy subs? (and other speakers...)
« on: September 23, 2017, 02:19:04 PM »
wow.  who's up for a ridiculously cheap subwoofer swarm? 

http://www.transcendentsound.com/Subwoofer.html

gotta love the name:
FFRS Mark 4:20 i.
Freaking Fantastic Redneck Subwoofer Mark 4:20 Inspired
or, The Bucket Sub
by Ed Schilling of The Horn Shoppe

 :rofl:

the other home brew speakers don't look so shabby either...
http://www.transcendentsound.com/DIY_Speakers.html

Offline P.I.

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Re: diy subs? (and other speakers...)
« Reply #1 on: September 23, 2017, 04:06:32 PM »
OMG!

Seriously?

I think I'll try some.  I've been looking for something to augment my OB PS220 & PM220 drivers.  I want something very low distortion and present.

Thank you!
"A man with an experience is never at the mercy of a man with an argument." - Hilmar von Campe

Offline doug s.

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Re: diy subs? (and other speakers...)
« Reply #2 on: September 23, 2017, 06:13:18 PM »
OMG!

Seriously?

I think I'll try some.  I've been looking for something to augment my OB PS220 & PM220 drivers.  I want something very low distortion and present.

Thank you!
ya, pretty cool.  you could make four of these for under $400.  and on ebay, there's quite a few pro-audio amps for $150 or less that make 400wrms/channel or more, into 4 ohm loads.  not a bad sub set-up, w/two (or more?) of these "bucket subs" per channel.  add some eq, and you could get 'em <20hz...

the only thing i am curious about is the volume - the spec sheet on the driver says ideal sealed enclosure is 0.72cuft.  a 5g bucket is ~0.67cuft, and then there's the volume loss of the driver, and the ~3" of concrete.  since you can get 6 and 7 gallon buckets w/the same dimensions, except taller, i wonder if they would give better results.  6g gives 0.804cuft before driver/concrete; 7g gives 0.938cuft.

doug s.

Offline djdube525

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Re: diy subs? (and other speakers...)
« Reply #3 on: September 24, 2017, 06:25:58 AM »
OMG!

Seriously?

I think I'll try some.  I've been looking for something to augment my OB PS220 & PM220 drivers.  I want something very low distortion and present.

Thank you!
ya, pretty cool.  you could make four of these for under $400.  and on ebay, there's quite a few pro-audio amps for $150 or less that make 400wrms/channel or more, into 4 ohm loads.  not a bad sub set-up, w/two (or more?) of these "bucket subs" per channel.  add some eq, and you could get 'em <20hz...

the only thing i am curious about is the volume - the spec sheet on the driver says ideal sealed enclosure is 0.72cuft.  a 5g bucket is ~0.67cuft, and then there's the volume loss of the driver, and the ~3" of concrete.  since you can get 6 and 7 gallon buckets w/the same dimensions, except taller, i wonder if they would give better results.  6g gives 0.804cuft before driver/concrete; 7g gives 0.938cuft.

doug s.

I suppose you could go with the 7gal and get the right volume with whatever amount of concrete is needed. Any idea how thick the HD buckets are?

These 7gal buckets are 100mil thick... I'm wondering how that compares. I'm assuming the O-Rings would help with sealing?

 

Offline doug s.

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Re: diy subs? (and other speakers...)
« Reply #4 on: September 24, 2017, 02:29:15 PM »
OMG!

Seriously?

I think I'll try some.  I've been looking for something to augment my OB PS220 & PM220 drivers.  I want something very low distortion and present.

Thank you!
ya, pretty cool.  you could make four of these for under $400.  and on ebay, there's quite a few pro-audio amps for $150 or less that make 400wrms/channel or more, into 4 ohm loads.  not a bad sub set-up, w/two (or more?) of these "bucket subs" per channel.  add some eq, and you could get 'em <20hz...

the only thing i am curious about is the volume - the spec sheet on the driver says ideal sealed enclosure is 0.72cuft.  a 5g bucket is ~0.67cuft, and then there's the volume loss of the driver, and the ~3" of concrete.  since you can get 6 and 7 gallon buckets w/the same dimensions, except taller, i wonder if they would give better results.  6g gives 0.804cuft before driver/concrete; 7g gives 0.938cuft.

doug s.

I suppose you could go with the 7gal and get the right volume with whatever amount of concrete is needed. Any idea how thick the HD buckets are?

These 7gal buckets are 100mil thick... I'm wondering how that compares. I'm assuming the O-Rings would help with sealing?
o-ring seal is redundant, (as is that heavy duty and relatively expensive gamma lid), as the speaker driver goes in the bucket bottom; the bucket is turned upside-down and concrete gets poured into it where the lid is.  the lid becomes the base. 


100mil thick (0.10") is actually decent; typical 5g buckets are 90mil.  i was wondering if strapping the bucket might be a worthwhile mod, haha!  also wondering if it would be worthwhile to cut a wood ring the diameter of the inside bucket bottom, to fit inside the bucket, so when you screw the driver to the bucket bottom, you're screwing it into the wood ring.

doug s.

Offline tmazz

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Re: diy subs? (and other speakers...)
« Reply #5 on: September 25, 2017, 07:58:47 PM »
One of the best subs I ever heard was the original Hsu, which was made in a cylinder, just like this one. Several years ago I met Dr. Hsu at one of the audio shows  and asked why they discontinued something that sounded so good. His answer was that   the cylinder was actually a piece of Sonotube concrete footing form that was made out of a cardboard and it proved to delicate to ship. As good as it sounded the amount of returns he got for speakers damaged in shipping made production impractical.

But just like the claims on the website for this bucket sub, the original very seamlessly blended with the other speakers in the system.

My feeling however, is that the biggest problem with this sub is an extremely low WAF (wife acceptance factor) make these impractical for anyone that doesn't have a dedicate, out of sight listening room. I for one would not even think about talking to my wife about putting these in the living room without wearing a stainless steel jockstrap.  :lol:

And that would be if they were built with the pictured grey buckets. I can't even imagine how high she wou;ld blow her top if I thried to place subs in the living room that were built in those bright orange Home Depot buckets.   [-(

She has been very tolerant of my audio obsessions, but that I am afraid would put her over the edge.
Remember, it's all about the music........

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Offline doug s.

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Re: diy subs? (and other speakers...)
« Reply #6 on: September 25, 2017, 08:11:15 PM »
One of the best subs I ever heard was the original Hsu, which was made in a cylinder, just like this one. Several years ago I met Dr. Hsu at one of the audio shows  and asked why they discontinued something that sounded so good. His answer was that   the cylinder was actually a piece of Sonotube concrete footing form that was made out of a cardboard and it proved to delicate to ship. As good as it sounded the amount of returns he got for speakers damaged in shipping made production impractical.

But just like the claims on the website for this bucket sub, the original very seamlessly blended with the other speakers in the system.

My feeling however, is that the biggest problem with this sub is an extremely low WAF (wife acceptance factor) make these impractical for anyone that doesn't have a dedicate, out of sight listening room. I for one would not even think about talking to my wife about putting these in the living room without wearing a stainless steel jockstrap.  :lol:

And that would be if they were built with the pictured grey buckets. I can't even imagine how high she wou;ld blow her top if I thried to place subs in the living room that were built in those bright orange Home Depot buckets.   [-(

She has been very tolerant of my audio obsessions, but that I am afraid would put her over the edge.
c'mon, surely you could find something here to please the little lady!   :rofl:

https://www.uline.com/BL_8150/Plastic-Pails-and-Lids

doug s.

Offline rollo

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Re: diy subs? (and other speakers...)
« Reply #7 on: September 26, 2017, 10:47:52 AM »
Cool read.  Doug the wood ring is a VG idea. Pipedream subs were very similar to these DIY just different enclosure with wood rings.  For me Danny Richies OB subs are King. "H" frame wonders [2-woofers per side]. About $1350 built [2] with Rythmic amps and ones own labor.
   Those buckets though do look interesting. How about we get a speaker that goes down to 20HZ or at a minimum 28HZ instead. The piano goes to 28HZ. If an organ fan [ pipe organ before the jokes] well then 18HZ. Rethm anybody for the non DIY crowd.

charles
« Last Edit: September 26, 2017, 10:49:35 AM by rollo »
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Offline rollo

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Re: diy subs? (and other speakers...)
« Reply #8 on: September 26, 2017, 10:48:35 AM »
  Hey Tom grow sub Balls and put that sub in  :roll: :rofl: :rofl:


charles
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Offline doug s.

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Re: diy subs? (and other speakers...)
« Reply #9 on: September 26, 2017, 10:53:09 AM »
...How about we get a speaker that goes down to 20HZ or at a minimum 28HZ instead. The piano goes to 28HZ. If an organ fan [ pipe organ before the jokes] well then 18HZ. Rethm anybody for the non DIY crowd.

charles
even if you have a speaker that goes to 20hz, subs will help smooth out the room response.  even if you hi-pass the mains.  that's because you can locate the subs w/o having to worry about compromising the mains' location.

doug s.

Offline tmazz

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Re: diy subs? (and other speakers...)
« Reply #10 on: September 26, 2017, 11:16:27 AM »
  Hey Tom grow sub Balls and put that sub in  :roll: :rofl: :rofl:


charles

I already have a nice lacquered rosewood pair. (of Carver subs that is....)
Remember, it's all about the music........

Nola Boxers
Sunfire True SW Super Jr (2)
McIntosh MC 275
ARC SP-9
VPI HW-19 Mk IV/SDS/SME IV/Sumiko Blue Pt. Special
Pro-Ject Pre Box S2 DAC/Bluesound Node/Pioneer DV 563A
DigiBuss/TWL PC/MIT Cable

Offline rollo

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Re: diy subs? (and other speakers...)
« Reply #11 on: September 26, 2017, 03:55:47 PM »
  Hey Tom grow sub Balls and put that sub in  :roll: :rofl: :rofl:


charles

I already have a nice lacquered rosewood pair. (of Carver subs that is....)

  Just having some fun with ya.


charles
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Offline rollo

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Re: diy subs? (and other speakers...)
« Reply #12 on: September 26, 2017, 04:01:04 PM »
...How about we get a speaker that goes down to 20HZ or at a minimum 28HZ instead. The piano goes to 28HZ. If an organ fan [ pipe organ before the jokes] well then 18HZ. Rethm anybody for the non DIY crowd.

charles
even if you have a speaker that goes to 20hz, subs will help smooth out the room response.  even if you hi-pass the mains.  that's because you can locate the subs w/o having to worry about compromising the mains' location.

doug s.

  Good point Doug. Just complicated and more expensive for me, well until the bucket sub. I run one sub behind me out of phase. With all the fine tuning available with the rear  sub the room is filled with good sounding bass.

charles
contact me  at rollo14@verizon.net or visit us on Facebook
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Offline doug s.

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Re: diy subs? (and other speakers...)
« Reply #13 on: September 26, 2017, 06:31:54 PM »
...How about we get a speaker that goes down to 20HZ or at a minimum 28HZ instead. The piano goes to 28HZ. If an organ fan [ pipe organ before the jokes] well then 18HZ. Rethm anybody for the non DIY crowd.

charles
even if you have a speaker that goes to 20hz, subs will help smooth out the room response.  even if you hi-pass the mains.  that's because you can locate the subs w/o having to worry about compromising the mains' location.

doug s.

  Good point Doug. Just complicated and more expensive for me, well until the bucket sub. I run one sub behind me out of phase. With all the fine tuning available with the rear  sub the room is filled with good sounding bass.

charles
at some point, when i (ever?) get my main system set up, i would like to have a pair of stereo subs behind me, run out of phase, as well as the pair in front...

doug s.

Offline djdube525

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Re: diy subs? (and other speakers...)
« Reply #14 on: September 27, 2017, 05:06:53 AM »
...How about we get a speaker that goes down to 20HZ or at a minimum 28HZ instead. The piano goes to 28HZ. If an organ fan [ pipe organ before the jokes] well then 18HZ. Rethm anybody for the non DIY crowd.

charles
even if you have a speaker that goes to 20hz, subs will help smooth out the room response.  even if you hi-pass the mains.  that's because you can locate the subs w/o having to worry about compromising the mains' location.

doug s.

  Good point Doug. Just complicated and more expensive for me, well until the bucket sub. I run one sub behind me out of phase. With all the fine tuning available with the rear  sub the room is filled with good sounding bass.

charles

I would argue a couple $100 bucket subs like these would open up more main speaker options, possibly leading to less overall expense than an all in one speaker that is "flat down to 20Hz".

"complexity", "footprint", "WAF"... I could understand those as arguments for not wanting to go down that path. From an expense standpoint, I wouldn't immediately make the assumption that more pieces = more $$ from an overall perspective.