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Chip Amps Amplifiers based on integrated circuits

Help with LM3886 + Crystal PGA2311 pre-amp kit!
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Old 30th April 2011, 01:49 PM   #11
dickl is offline dickl  United States
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I don't know about the thump, but I do have an assembled version of the 2311 with remote hooked to my GAS Son of Ampzilla. I love the sound! Quite clean and very neat.
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Old 15th August 2011, 05:23 PM   #12
triode_al is offline triode_al  Netherlands
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Join Date: May 2004
Location: Westland
Originally Posted by jerryo View Post
There is an alternative:

just leave the amp and volume control "on" all the time; unless obviously when on holiday or away from your house for a long period of time. This way you avoid the stressing of components with the power-on, power-off cycle and your amps will be warm and ready to go all the time. I know there is a cost implication for electricity used whilst on stand-by, but it is not that great.
and additionally, activate or deactivate the LM3886 by using the mute function (earthing the mute input). You could do that with a relay; the start time can be set (RC) while a diode can ensure a fast deactivation.
How to incorporate that in pre would be by tapping the signal for mute in the pre:
On power up, “power−up reset” is activated for about 100ms during which the circuit is in hardware MUTE state and all internal flip-flops are reset. (datasheet)
SPU --> tube MM/RIAA;
Pass buffer -->300B SE Anzai Za´ka (WE91 & 6SJ7); --> FE120 TQWT

Last edited by triode_al; 15th August 2011 at 05:26 PM.
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