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Perreaux SM2 Pre and 2150B Power amp Gain is out of control

Hi, Very new to Audiogon and looking for help.  I picked up a Perreaux SM2 Pre and 2150B Power amp and the gain is out of control.  Normal listening level on pre volume is 1-1.5 or 7:00 o'clock and 3 is way too loud on both 88 db speakers and even louder on 96 db speakers.  I am using a laptop set to 10 in the OS and and 10 in the software,  into project prebox 2 DAC set to to into the SM2 Pre, them AMP and finally ZU speakers (and sometimes NHT)  It's also very loud using a vintage Technics 1650 Turntable.  What to do?  I love the sound but can't listen well at low levels and I do this often.  Thank YOU!!!  John

Than
johnwahl

Showing 1 response by malamute2k

malamute2k
1 posts
 
Perreaux told me how to fix this for the CD input. They suggested:

SM2 input sensitivity: 110mV

SM3 input sensitivity CD input: 350mV

 

There is a resistor attenuation network on the SM3 CD input, 10K inline from the RCA socket to input select, and a 22K from input select to Ground.

 

CD RCA - - - - 10K - - - - - Input select switch

GND - - - - - - -22K - -^

I hope that this information helps.
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