OT: Kompresor (pomoc)

[gregor z]

Od starijih DBX 160 XT ili 160A sa Jim Williams modifikacijama, mozes jih dobiti veoma jeftino.....

Od novijih SPL Dynamaxx, super clean sound i radi svoj posao odlicno...

Meni osobno najbolja je kombinacija Distressora i DBX 160SL.....


Pozdrav, Gregor

The 160A is nearly identical to the 160XT. The XT uses a LM353 input opamp and a 5534 output opamp, the A uses 5532 opamps. Both differ from the X by having an opamp based balanced output, the 160X uses a current buffer around a LF351. The XT and A also have this circuit in addition to the cleaner balanced opamp outputs. The A has a cross coupled output with a servo.

Both the XT and A are superior to the X as they each incorporate the non-linear timing capacitor circuit which speeds up attack time and lowers low frequency THD. These circuits can be inproved by replacing the cross coupled 1N4148 diodes with green LED's.

All can be improved by replacing the VCA with a that 2180A. Remove the 51 or 47 ohm resistor from the trim to pin 4 and remove the trim circuit feed 100k resistor as these are pre-trimmed at the factory. On an A it's R110 and R111. On an XT it's R9 and R10. On an X it's R9 and R10.

When I do the mod on them the VCA is replaced with a that 2180A, the opamp is changed to a National LM6172, the trim circuits are removed from the vca, the electrolytic coupling cap is replaced with a Wima 4.7 uf mks-2, bypassed with a MIT .01 PPMFX. Power supply cans are replaced and enlarged and some phase compensation and power supply bypass caps are added. Bandwidth is raise up one octave. Slew rate is increased. Distortion is lowered. Fog is removed. All is well.