INTRODUCTION
Thank you for choosing a Cornell Plexi Seven Amplifier
Your amplifier employs valve technology. It is hand built. Only top quality components are
used so that you can enjoy years of trouble-free use.
The Plexi Seven is an exciting new amplifier that sounds much bigger than it looks.
Please take time to read this manual, to ensure that you get the best from your
amplifier.
Valve Replacement
Valve life varies depending upon playing style and application. Power valves have a
much shorter life than pre-amp valves, which can last for years.
To maintain the optimum performance of your amplifier, the valves should only be
replaced with the same valve types.
Plexi Seven valves are:
V1 - 12AX7/ECC83; V2 - 12AX7/ECC83; V3 - EL84
Warning
When changing valves, ALWAYS unplug the amplifier, and remember that the VALVES
ARE HOT! Wait for valves to cool, or replace valves when the amplifier has not been
used for several hours.
DO NOT allow anything to obstruct or touch the output valve in the
back of the cabinet.
Remember it is very hot when in use.
We are always happy to assist in any way we can, so please do not hesitate to
contact us.
WARNING
To prevent damage, fire or shock hazard, do not expose this amplifier to rain or
moisture.
No user serviceable parts inside. Refer servicing to qualified personnel only.
This unit must be earthed. Use the correct mains cord.