CAPI LC25 500 Series 10-Band API graphic EQ w/ Gar2520 Op Amps & Litz Output Transformer. While this equalizer is very unique, it is similar in filter topology to the graphic EQ's of the early 1970's. IC gyrators are employed and the circuit has an inherently Proportional Q. The biggest difference between the LC25 and most other graphic equalizers are the stepped controls.Exact recall is a must in the modern day of recording and mixing. Other similar equalizers may have fine resolution from 0dB to +/-4dB, but from that point to max cut/boost things get out of hand quickly and near impossible to repeat. By going stepped, there is the opportunity to add a -15dB cut which is a fantastic bonus! The audio path of the LC25 is extremely unique. The choice was to use the coveted EA2622 mic input transformer as the receiver.
The EA2622 is essentially setup in the same way as line mode on the VP28. The EA2622 is buffered from the remaining circuitry by a DTO5 discrete opamp. Five bands of gyrators "hang" between each of the swinging inputs of a dual LME49720 opamp.
The output stage is a socketed 2520 style discrete opamp followed by a 2503 style output transformer wired 1:3. A 2-position toggle operates a hard-wire relay bypass. This relay bypass has a shunt jumper connected to the Pin-6 DC bus so any adjacent LC25's or LC40's can be bypassed by activating the toggle on only one unit.
BYP = bypass and ACT = active. API (and compatible) Lunchbox and VPR500 racking systems.These can be also build to order. If you are not certain please contact me first. If for any reason you are dissatisfied with the module(s) in the first 30 days after reception. Please include details, explanation, reasons. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "bywaudio-com" and is located in this country: CA. This item can be shipped worldwide.