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Does anyone have an original memory man w/ boost switch?

Posted: Mon Aug 19, 2013 8:46 pm
by Scruffie
Not a deluxe, not a stereo, not with chorus but the first version which as far as I can tell used 3 x SAD1024s and maybe MN3007s/3005s later

Had Solid-state Echo/ Delay line written on it.

If you do and could take some gut shots i'd appreciate it! There were I think 4 versions of it... although possibly only 2.

Better yet if you have the schematics, found them but I can't spare $5.

Re: Does anyone have an original memory man w/ boost switch?

Posted: Tue Aug 20, 2013 7:46 pm
by hiorgos
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Re: Does anyone have an original memory man w/ boost switch?

Posted: Tue Aug 20, 2013 8:12 pm
by Scruffie
Nah, the 3 knobbed one before that, although they look similar.

That's the Echo Chorus, had one of those my self, though I never got round to fixing it. How was it?

Says Solid State Echo/Analog Delay Line on it and the switch at the top just goes between Boost and No Boost.

Found a schematic for the EH-7500 version thanks to someone on another forum, no schem for the EH-1309 and only one trace side shot of it.

Re: Does anyone have an original memory man w/ boost switch?

Posted: Tue Aug 20, 2013 10:14 pm
by hiorgos
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Re: Does anyone have an original memory man w/ boost switch?

Posted: Tue Aug 20, 2013 10:54 pm
by ThePastRecedes
Maybe try emailing EHX. You've probably thought of that though....

I've been googling and only seem to find vintage ehx adverts.

Re: Does anyone have an original memory man w/ boost switch?

Posted: Tue Aug 20, 2013 11:03 pm
by Scruffie
ThePastRecedes wrote:Maybe try emailing EHX. You've probably thought of that though....

I've been googling and only seem to find vintage ehx adverts.

They lost most of that sort of stuff in the bankruptcy to sovtek to EHX days.

Yeah there is not much out there which is why I was a little interested, the designs seem to even pre-date companding, that or the designer just wasn't aware of it.

I got one schematic off EHX UKs old accountant, the other is online but for sale, gut shots, think i'll just have to troll ebay now and again (how I found the one shot I have).

Doubt they're a great delay, although I did find one guy review the sound as 'chilling' though.

hiorgos wrote:It was good, and looked so cool. I'd had kept it only for the looks but, in the end, it was a lot to carry around and I didn't use it that much. Vibrato was fantastic!

Yeah i've read the chorus is great, I have considered building one but the lack of companding made me worry about noise and whine so if it was worth the effort.