Description
Pioneer D-23 Vintage Amplifiers & Tube Amps From Japan
Product Overview
A crossover network that emphasizes various functions and basic performance so that you can enjoy a wide range of multi-amplifiers from 2-way to 4-way. Band division can be multi-way up to 4 ways with 4 divisions of Low / Mid-Low / Mid-High / High. The cutoff frequency is 11 points selected for each 1/3 octave, and high cut and low cut are independent. The level control of each band has adopted the attenuator type of 1dB step.There are 3 types of cutoff slopes to choose from 6, 12, and 18 (dB / oct). 6dB / oct and 18dB / oct have an attenuation of -3dB at the crossover point, but in the case of 12dB / oct, if you cross at -3dB, the characteristics may rise due to the phase relationship, so 12dB / oct Only in the case, it is set to -6dB cross. Except for the low cut of the High position, all the slopes are equipped with a flat position, and by utilizing this, various types of multi-amplifier systems from 2 ways to 4 ways can be freely configured.
Before the exhibition, cleaning of contacts and polishing of terminals have been completed and the current operation is good. There are some scratches and rust on the top and side plates, but the front area is very clean.
