Quote:
Originally Posted by MGSchindel
Also, all the 1987 Silver Jubilee heads (the 50w, the 100w and the 50w short chassis), as well as its 1988-1989 successor, the Marshall "Custom" in Black tolex/gold face plate, and then later the Slash 2555 reissue signature model, all have a clipping diode circuit in the preamp, that you can either engage or disengage via a pull-switch on the preamp gain knob. ON that amp you can hear for yourself what the clipping diodes do to the tone the minute you turn them on...SUCK THE TONE DRY, CUT DOWN THE VOLUME, HACK THE BASS, MAKES IT THIN AND SCRATCHY, AND KILLS THE NATURAL TUBE WARMTH AND PUNCH, for just a little extra "weed wacker filler scratch." Say no to clipping diode distortion on a marshall preamp circuit!
|
Regarding the Silver Jubilee, there are 3 different way to use/configure the amp.
When in Clean mode, no rhythm clip, you have an all tube signal path, no diodes or transistors in the signal path.
When in Clean mode with the rhythm clip engaged, clipping diodes that are specific to the clean channel are put in the signal path. These are regular Silicon diodes that clips at 0.65v
When in Lead mode, the lead channel clipping diodes are engaged. The diodes are a combination of LEDs clipping at approx 1.45v and 1 regular diode.