HCA 1200 II bias circuit

11tsteve
11tsteve Posts: 1,166
edited August 2012 in 2 Channel Audio
i will post this at DIY as well, but just curious if anyone here knows why there are 2 trim pots in each channel's circuit? one for bias, but there is no DC offset adjustment (AFAIK) .... just wondering.

thanks

steve
Polk Lsi9
N.E.W. A-20 class A 20W
NAD 1020 completely refurbished
Keces DA-131 mk.II
Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
Paradigm DSP-3100 v.2
Post edited by 11tsteve on
· Share on FacebookShare on Twitter

Comments

  • billbillw
    billbillw Posts: 6,766
    edited August 2012
    Your best bet is to email or call Parasound. Ask for Tony if you do. He is usually great to deal with. If you don't already have one, ask him to email you a schematic.
    For rig details, see my profile. Nothing here anymore...
    · Share on FacebookShare on Twitter
  • 11tsteve
    11tsteve Posts: 1,166
    edited August 2012
    thanks billbillw. that is basically what i have gathered over at DIY... i just haven't had the time. it is most likely not important for me to know, but i am curious. i was also told to post in a certain section at DIY and J. Curl might be able to tell me, but then i really feel like i would be bother him....
    Polk Lsi9
    N.E.W. A-20 class A 20W
    NAD 1020 completely refurbished
    Keces DA-131 mk.II
    Analysis Plus Copper Oval, Douglass, Morrow SUB3, Huffman Digital
    Paradigm DSP-3100 v.2
    · Share on FacebookShare on Twitter