I think all of their “Memory” series have trim pots in them to control gain, mix, etc. *BUT*, and this is a BIG BUT, I’ve also read that the trim pots are EXTREMELY sensitive and that it’s really easy to jack things up, not like break the pedal, but to make it essentially unusable because some trim pot values are extremely interactive with others. For example, some of these delays have a separate trim for the bias of each bucket brigade device.

I thought my Memory Toy might need some internal tweaking because it was working well, but I couldn’t get it to self-oscillate even when the FEEDBACK was turned up all the way, but it turned out that the battery was dying. When I used a fresh battery or plugged it into a power supply, then everything was back to normal.

The Deluxe Memory Boy doesn’t use batteries, but if you have all of them plugged into a daisy chained power supply, then it could be that they are not receiving full voltage or milliamperage.

So, first try plugging the “weak” delays into the power supply that you are currently using for your good delay. If possible, try them by themselves off of a power supply chain – using individual power supplies. See if that helps. If it does, then that’s the problem. You need a more powerful power supply, or to have them on their own power circuit.

If this doesn’t help, then take EHX STAFF’s advice and send a note to info@ehx.com before you try tweaking the trim pots yourself. If you get no joy from them, then you can try tweaking the pots, but do it VERY SLOWLY and carefully and make sure you can return them to their original positions, but this really should be your last option.