Last one I'm going to trace this weekend. Pretty big "bang for the buck" for those who are not afraid of plastic cases and highly "tweakable" for a chorus that can be bought for 20 dollars or less. Interesting way of driving the MN3102 as pin 5 is not used. Also a surpising way of mixing the dry and wet signal on the "second" output.
Apart from the fact that it uses a MN3209. Although that could be an error as I got this thing with that chip in place and soldered in 180 degrees wrong. Always interested in somebody opening up his example to see what's in there. Enjoy.
http://www.dirk-hendrik.com/aria_stereo_chorus.pdf
Aria - ACH-1 Chorus / Monarch ACH-7 [schematic]
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Dirk_Hendrik
- Old Solderhand
Information
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analogguru
- Old Solderhand
Information
Always interested in somebody opening up his example to see what's in there.
Thats a problem.....Mine is already open and was waiting for tracing.... what is obsolete now.
Thanks for the schem...
Than let´s have a look.... the units seems to be from 1989 after week 38....
it has a MN3209 and a MN3102 in it....
As far as I remember the zener-diode marked with xx normally is a 9V1 in these units.... yes in this unit also marked with 9.1 in blue.....
Mine doesn´t have a "Sensitivity" control.... Instead it has an "Intensitiy" control.
In the Ken-Multi pedals the same pcb was used too....
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.