Originally Posted by soundmanshorty
the S4 being a variable supply runs in Class A & Class AB.
450 watts @8 ohms per channel
800 watts @ 4 ohms per channel
Frequency Response from 10 HZ to 60 KHZ
Input Sensitivity 1.4 volts
Slew rate 70 v/us
Damping Factor 250
Class AB + variable supply output, featuring fully Class A drive sections.
3RU with a 10 yr Warranty
600 @ 8 1000 @ 4 ohms
Class ab Bipolar Mosfet
Damp is 500
freq resp 12-50k
We couldnt have an exact copy of the older design even if we wanted to with key parts being discontinued in the older designs.
For SBS Designs amplifiers, key parts are made to order & Spec for SBS Designs amplifiers exclusively.
FYI the internal layout has been used by my Engineer / Designer for 20 yrs and we will keep using it!
Hope that answers your questions