Hi,
Can anybody please assist with providing a schematic for the Audio-Technica AT-PEQ20 Phono Equlaizer?
I recently picked up a second hand unit only to find that someone has already tried to mod it and some parts are missing from the PCB and or perhaps not original - two resistors soldered in parallel is a bit of a dead give away?
Thanks 🙂
Can anybody please assist with providing a schematic for the Audio-Technica AT-PEQ20 Phono Equlaizer?
I recently picked up a second hand unit only to find that someone has already tried to mod it and some parts are missing from the PCB and or perhaps not original - two resistors soldered in parallel is a bit of a dead give away?
Thanks 🙂
do a search. last year, i posted the schematic and internal pics of the unit that i purchased.
mlloyd1
edit:
OK, I did a search and found I have a different unit. I didn't know AT made more than one. Here's the link to what I have: http://www.diyaudio.com/forums/analogue-source/185248-peq3-anyone.html
Might be some similarities; maybe not. Good luck!
mlloyd1
edit:
OK, I did a search and found I have a different unit. I didn't know AT made more than one. Here's the link to what I have: http://www.diyaudio.com/forums/analogue-source/185248-peq3-anyone.html
Might be some similarities; maybe not. Good luck!
Last edited:
Hi,
They seem to be similar with the AT-PEQ20 adding discrete transistors
for the MC part, probably the MM parts are very near identical in terms
topology if nothing else.
rgds, sreten.
They seem to be similar with the AT-PEQ20 adding discrete transistors
for the MC part, probably the MM parts are very near identical in terms
topology if nothing else.
rgds, sreten.
Last edited:
AT-PEQ20 vs AT-PEQ3
Hi,
Thanks for your replies. I found the schematic for the AT-PEQ3 from somewhere else and looked carefully at the components used and the number of them.
Putting aside the MC preamp offered by the AT-PEQ20, the straight out MM RIAA stage seems to have a few more components in the feedback loop around the opamp.(The switch appears to switch out the MC preamp from infront of the MM RIAA stage of the AT-PEQ20)
In short the AT-PEQ20 would appear to be a different circuit from the AT-PEQ3?
I read somewhere that the AT-PEQ3 wasn't designed by Audio Technica, instead an out sourced design done by a Hong Kong OEM company that badge the product for Audio Technica.
I've surfed the net for a few days but can't find a macro shot close-up of an AT-PEQ20 such that I could figure out what the resistor and capacitor values are.
Thanks.View attachment AT-PEQ3.pdf
Hi,
Thanks for your replies. I found the schematic for the AT-PEQ3 from somewhere else and looked carefully at the components used and the number of them.
Putting aside the MC preamp offered by the AT-PEQ20, the straight out MM RIAA stage seems to have a few more components in the feedback loop around the opamp.(The switch appears to switch out the MC preamp from infront of the MM RIAA stage of the AT-PEQ20)
In short the AT-PEQ20 would appear to be a different circuit from the AT-PEQ3?
I read somewhere that the AT-PEQ3 wasn't designed by Audio Technica, instead an out sourced design done by a Hong Kong OEM company that badge the product for Audio Technica.
I've surfed the net for a few days but can't find a macro shot close-up of an AT-PEQ20 such that I could figure out what the resistor and capacitor values are.
Thanks.View attachment AT-PEQ3.pdf
AT-PEQ20
Just for interests sake I started looking at some of the Japanese sites, some of those guys are pretty extreme!
This guys has done some interesting mods to his AT-PEQ20 with car battery:
see: ???????? - ??????
Celestial.
Just for interests sake I started looking at some of the Japanese sites, some of those guys are pretty extreme!
This guys has done some interesting mods to his AT-PEQ20 with car battery:
see: ???????? - ??????
Celestial.
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