Well, I’m pleased to say, the surgery was a success and the DR-110 finally has some kick drum oomph. Lot’s of it actually.

I’ve made quite a few modifications and added a bunch of knobs; there is a Snare Decay, then a Snare fizz/snap mix – lot’s of sound adjustment potential with these two. On the next row we have clap and hi-hat pitch. All four modifications replaced the existing fixed resistors with 47k pots as per the suggestions here

Then a row of switches to increase the clap and snare decay envelopes, making them sound distant and echoey. This was acheived by piggy-backing 2.2uf electro capacitors in series with the original capacitors. I got the idea from this post, but rather than make permanent modifications, I wired them to switches so that I could retain the original sounds too.

And finally, two more switches for Thud 1 and Thud 2 respectively. The first switch puts a 4.7uf electro capacitor across r70, which gives a subtle boost to the kick. The second switch adds a further two parallel 4.7uf capacitors across r70 that gives it a nice 808 like roundness.

I’ll put some before and after loops up in the next couple of days so you can hear the effect for yourself.

Definitely worth buying one of these if you see one for a reasonable price.