This Harry Joyce Custom 50 watt amplifier is a master volume design which includes
:
Gain controls for Normal or Brilliant inputs, Tone controls for Bass, Treble, Mids and Presence. The pre-amp stage uses (4) 12AX7 pre-amp tubes for inputs, tone, voltage amp, and driver. The output stage (output transformer) is designed for EL34HJ power tubes.
On the back side, voltage and ohm selector, 2 speaker outputs (in parallel) and an Hum balance, send and return (effect loop), as well as, fuse holders for power, high voltage supply and IEC Filtered Powered Entry Module.
Specs for Harry Joyce Custom 50 Watt amps:
Input resistance-High: 1 meg ohm
Input resistance-Low: 100 K ohm
Inputs can be linked from channel to channel
Tone controls
:
Bass + minus -20db
Treble -6 to 30db with presence
Middle +10db
Output Power RMS
: 50 Watts
Input Voltage Selector
: 120Vac, 230Vac 50/60 HZ
Output Ohm Selector
: 4, 8, 16 ohms
Effect Loop
: Send through master output, return input 1 meg ohm
