- Nov 10, 2006
- Norfolk - UK
I have had an idea for a poor man's version of the Pultec EQP1-A. Low boost/cut and hi cut just as the EQP1-A with the hi boost modified to not need an inductor (based on the Helios Type 69 EQ). So just four pots (no bandwidth control) and a couple of cheap Lorlin 2 pole 6 way switches will give us 6 lo and 6 hi frequencies (more than the EQP1-). I have done some sims of the circuit and it still produces the classic Pultec bump in the response so I think I will knock one up and see what it sounds like. Schematic attached - and I have changed the pot values so that it has a nominal 10K input impedance so it can be driven by a normal 10K:10K bridging transformer. Insertion loss is about 21dB so plenty of options for gain make up.