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Old 28th April 2003, 08:02 PM   #11
Bricolo is offline Bricolo  France
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I don't think my crappy akai test speakers are >91dB

but my cd player has a high output
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Old 28th April 2003, 09:36 PM   #12
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Currently I'm using Sonic Frontiers TransDac (combined with a good transport, it sounds pretty good) with my Gainclone. The pots I'm using have 31 dents (Noble). On some recordings I found myself setting them 2 positions away from max. vol and on some other at half volume. It all depends on a way CD was recorded.

Peter
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Old 29th April 2003, 02:07 AM   #13
digi01 is offline digi01  China
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I plan to do one gainclone too.
I have two LM3886,4 SPRAGUE CON 10000UF/50V now.How to begin? How to choose the transformor ?
Can LM3886 use king30's schematic of 3875 forms of circuit?
Loudspeaker protect circuit need? Have asked so many questions for a while, thanks all
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Old 29th April 2003, 04:10 PM   #14
Bricolo is offline Bricolo  France
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Quote:
Originally posted by Peter Daniel
Currently I'm using Sonic Frontiers TransDac (combined with a good transport, it sounds pretty good) with my Gainclone. The pots I'm using have 31 dents (Noble). On some recordings I found myself setting them 2 positions away from max. vol and on some other at half volume. It all depends on a way CD was recorded.

Peter

I don't know how much tour dac outputs, but my old sony cdp-102 (don't laugh ) outputs more than 5Vp-p on it's line out

my 100K log pot is rarely higher than 1/4th
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Old 29th April 2003, 04:48 PM   #15
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Peter,
I removed the cap yesterday, checked the offset and was no more than 20mv. I was using a cheapo RS cap and it sounds better without it. Here's all I have left.


Click the image to open in full size.

I can't wait to compare my current setup to the one I'm building.

Click the image to open in full size.
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Old 29th April 2003, 05:12 PM   #16
Bricolo is offline Bricolo  France
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Quote:
Originally posted by king30
Peter,
I removed the cap yesterday, checked the offset and was no more than 20mv. I was using a cheapo RS cap and it sounds better without it. Here's all I have left.


Click the image to open in full size.

I can't wait to compare my current setup to the one I'm building.

Click the image to open in full size.

take care, 20mv multiplied by the GC's gain (22)->440mV minimum at the output
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Old 3rd May 2003, 10:33 PM   #17
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I asked this before and it kinda got swamped in a discussion about the removal of resistors and what does/doesn't get grounded...

Am I to assume that everyone has pretty much done away with the RC network (0.22u, 1R) across the speaker terminals?

TIA

Drew
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Old 3rd May 2003, 10:52 PM   #18
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Quote:
Originally posted by Bricolo



take care, 20mv multiplied by the GC's gain (22)->440mV minimum at the output
If your source doesn't produce any DC offset you won't get more than 30mV DC on IGC with positive input directly to ground. And it indeed opens up the sound.
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Old 3rd May 2003, 10:54 PM   #19
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Quote:
Originally posted by DrewP
I asked this before and it kinda got swamped in a discussion about the removal of resistors and what does/doesn't get grounded...

Am I to assume that everyone has pretty much done away with the RC network (0.22u, 1R) across the speaker terminals?

TIA

Drew
You don't need Zobel at the output. Even for people complaining about oscillations, Zobel network wasn't a solution. But take care about the way you do your connections and grounding
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