Attenuator between pre- and power amplifier?, Moved from General Audio |
Attenuator between pre- and power amplifier?, Moved from General Audio |
Apr 11 2012, 06:19
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#1
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Group: Members Posts: 18 Joined: 11-April 12 Member No.: 98656 |
My receiver sounds beautiful but has far too much gain for my relatively efficient speakers. This causes me to listen to all of my music within the first 10-15% of the volume pot (20% if I'm blasting it). Because my potentiometer has rather apparent channel balance problems below 5% that don't fully go away until 10% or so I'm considering some way of lowering the amplifier's gain.
My question is this: Is there any real pitfalls to adding an attenuator between the preamp out and poweramp input in my receiver? I'm thinking anywhere -15dB up to -20dB fixed. My other options are to perform surgery and maybe replace a resistor or two or possibly replace the pot for one that has better tracking. Replacing the pot was my first plan but the replacement pots for my amplifier cost 70 bucks a piece and there's no guarantee the replacement will track appreciably better. My understanding is that at <5% pretty much all pots have tracking problems. So... should I go ahead and add a fixed level attenuator between my pre- and power- stages or should I refrain and what are the problems that I should be looking out for? Thanks! |
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Apr 11 2012, 08:14
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#2
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Group: Members Posts: 346 Joined: 21-August 02 Member No.: 3138 |
Friend, if you can solve your problem with a couple of resistors don't spend the $70.
Woody -------------------- [url=http://www.domain.com]Click here![/url]
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Apr 11 2012, 09:56
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#3
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Group: Members Posts: 18 Joined: 11-April 12 Member No.: 98656 |
Friend, if you can solve your problem with a couple of resistors don't spend the $70. Woody Well... to be fair the schematic I was reading was a rather poor quality reproduction. I can't really tell if the resistors I was looking at were for gain or if they were part of the motor control mechanism. Stupid motor making parts expensive This post has been edited by db1989: Apr 11 2012, 20:55
Reason for edit: Please quote above, not below, your reply.
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AudioKitten Attenuator between pre- and power amplifier? Apr 11 2012, 06:19
stephan_g QUOTE (woody_woodward @ Apr 11 2012, 08:1... Apr 11 2012, 17:21
Glenn Gundlach Well an attenuator is certainly an inexpensive exp... Apr 11 2012, 08:35
AudioKitten I don't quite understand. I was under the impr... Apr 11 2012, 09:46
soulsearchingsun QUOTE (AudioKitten @ Apr 11 2012, 09:46) ... Apr 11 2012, 13:35
Glenn Gundlach QUOTE (AudioKitten @ Apr 11 2012, 00:46) ... Apr 11 2012, 20:56
DVDdoug Parts Express has these attenuators in 1, 3, and 6... Apr 11 2012, 19:24
AudioKitten QUOTE (DVDdoug @ Apr 11 2012, 11:24) Part... Apr 11 2012, 20:08
pdq If you don't mind minor modification to your a... Apr 11 2012, 19:35
AudioKitten Volume control dependent input impedance seems lik... Apr 11 2012, 19:49
pdq That sounds like the pots have one or more taps, w... Apr 11 2012, 20:00
AudioKitten QUOTE (pdq @ Apr 11 2012, 12:00) That sou... Apr 11 2012, 20:11
pdq Are the channels balanced at low volume with/witho... Apr 11 2012, 20:36
AudioKitten QUOTE (pdq @ Apr 11 2012, 12:36) Are the ... Apr 11 2012, 21:07
pdq Well, the simplest fix would be if one switch cont... Apr 11 2012, 21:19
AudioKitten QUOTE (pdq @ Apr 11 2012, 13:19) Well, th... Apr 11 2012, 21:28![]() ![]() |
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Lo-Fi Version | Time is now: 18th May 2013 - 14:22 |