Equalizer in a Hi Fi system

Hi Guys,

Just stumbled across this thread. 

I designed the PEQ-1 for Mike D way back when.  It is pretty much a "fit/form/function" copy of the Pallette preamplifier.  Per Mike's request, added the switchable frequency center points PLUS the top end 50K freq he wanted.  

Made up one for myself, sans transformers, in a small box like the Loki.  Have that on the end of a 25ft umbilical so I can use/adjust it from the listening position - with an in/out switch and gain trim for both channels.  Still use and enjoy it after all these years.  Yep - PROGRAM equalization, when necessary, works for me.  Glad you enjoy it also!

If you're able, suggest bypassing either the input or output transformers - or both. Never liked their "sound"

Most all electronics in the pro world are unbalanced, "single ended" and use transformers to obtain balanced connections to the outside world.  The CO is no exception.  In the HiFi world, with very few long cable runs, I opine that balanced is unnecessary BUT a users choice.  And they do add their own sound.  The transformers are from CineMag - CMO / CML.

All of the CO electronic products were originally made in the Dominican Republic by a company that did VERY nice work.  Lost track of CO shortly after that project.  Do know that Mike D tried to bring production into the US and encountered a few false starts. Had/have no idea if the company he later worked with continued production of his products.  If so the build could be VERY different than the original (layout and parts selection).  Maybe tlcocks can post a pic of the ORIGINAL insides.