Recent Posts

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It’s been a few months now since I began my basic Tidal 9.99 subscription. The pluses- anything musically that pops into your head via reading, radio, people’s suggestions, etc., can now be explored in depth, or superficially- the choice is yours. I do a lot of my listening as I go about my home tinkering with this and that, so my basic subscription sound quality is fine.
The ability to tag songs as favorites and shuffle them as my own eclectic ‘radio station’ is great.
More to come... I will soon be looking to upgrade the sound quality; I am currently using a Bluetooth connection between my iPad and amp. I know I can do better, but for now the musical exploration is fascinating and thoroughly enjoyable.
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Self-Help / Re: An Unusual Speaker Cable With Very Low in Inductance
« Last post by steve on Today at 12:38:00 PM »
I am going to change my stance on the speaker wires Nick. I have been tweaking my Modi 2, and the latest
was replacing the stock audio output jacks with Vampire all copper jacks. What an improvement, amazing. I
did not notice this much improvement with the modified NAD 521 (bypassed the analog chip with gain of 6db
and added pair of Vampire all copper jacks). We are dealing with approx 1 vrms in both components.

I would like to change my generic wires with 6N solid copper wires sometime. Pretty expensive though
and my car is ailing big time, so later. 

Cheers
steve
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Manufacturer News / Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Last post by orchardaudio on Today at 10:22:22 AM »
I am looking for people who would be interested in trying these amps and posting their findings.

Leo, I'd definitely be interested, but not until I've got my PecanPi and I can borrow a pair of BOSC to test.   So timing wise, it may not be ideal for you.

If everything goes according to plan I will be shipping your PecanPis before the end of the month. And then follow up with the amps sometime in the middle of August.
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NY Audio Rave / Re: Paul Kaplan - passed away
« Last post by BobM on Today at 10:02:45 AM »
Definitely one of the "characters" in this hobby. He certainly left his mark.

Sorry to hear about his passing.

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Manufacturer News / Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Last post by mdconnelly on Today at 07:24:52 AM »
I am looking for people who would be interested in trying these amps and posting their findings.

Leo, I'd definitely be interested, but not until I've got my PecanPi and I can borrow a pair of BOSC to test.   So timing wise, it may not be ideal for you.
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NY Audio Rave / Re: Paul Kaplan - passed away
« Last post by Triode Pete on Today at 06:59:32 AM »
RIP, Paul... I learned a lot from you!

Pancreatic cancer does not have great recovery rates... very sad!

Life is too short! Enjoy every day!

Pete
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NY Audio Rave / Paul Kaplan - passed away
« Last post by Levi on Today at 06:53:21 AM »
Hi ALL,

Hope you are all well.

It is of deep sadness to learn that our long time friend Paul Kaplan has passed away.

Martin has informed me yesterday that Paul has been battling cancer.  This is all I know.

Sad news. 

Thank you,
Levi
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Speakers / Re: Line Arrays
« Last post by steve on July 14, 2019, 09:16:57 PM »
Rich,

Wondering the other day if you had a chance to do anymore work on your speakers?

Just curious.
steve
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Tubes / Re: Steve, great post!
« Last post by steve on July 14, 2019, 09:03:59 PM »
Another update concerning my system improvements etc.

First, one of the gents had to have a hernia operation, so he could only bring his $4,000.00
Lampizator DAC. He loved the system with the Lampizator, so the Modi 2 needed some
more modding. Such has been done, and is much improved.

Besides the power supply caps being replaced (one is not polypropylene), and output
capacitors (originals are polyester/mylar) to polypropylene, I replaced the stock jacks
with Vampire all copper jacks. All three made a substantial improvement. Near world class dac.

Dan came up and loved my system. We are now looking for an output capacitor
since the one's I am using have not been available for some time. Looking at two brands that
could be promising to modify his possible Modi 2 as well.

So the weakness in my system was the source. The computer, NAD 521bee with analog section
bypassed still doesn't make it. But the modi 2 is really beginning to sound world class.

Maybe I will get more into the NAD and see what else can be done there.

cheers
steve
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Amplification and Preamplification / Re: Watts vs Current
« Last post by steve on July 14, 2019, 08:21:27 PM »
I'm a complete novice when it comes to anything electric so am asking.
What makes a low wattage amp high current? And is a high wattage amp
high current in order to be high wattage or can you have a high wattage amp
with low current?
Just trying to figure something out. I've been told that a high current amp is good.

Don
ps: If this has been discussed before, please point me in that direction

Hi Don,

I believe many prefer higher current as linearity improves at lower current levels.
I say this because for just about any speaker, the limiting factor for current is the
signal voltage divided by the voice coil dc resistance, any inductor dc resistance, plus
speaker wire resistance and amplifier output resistance. Of course, there is inductance
with all resistances I just mentioned, so the current will be lower still.

What makes a low wattage amp high current is a combination of amplifier supply voltage,
power supply capacitance, and current that the output devices are safely capable of passing.

It is pretty difficult to have a high power amplifier with a low current rating, but it depends upon
what you mean by "low current" rating. I know that sounds like a cop out, but there are so  many
variables to deal with. As the speaker impedance rises (say 16 ohms), the current requirement
lowers, yet with higher voltage amplifiers, high power can be obtained.

I hope this helps Don.
steve

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