Specifications

Rear Panel

1. FUSES –

Always use correctly rated fuses or severe damage to the amp may

occur. Refer to the rear panel for fuse ratings. Always unplug the amp before

replacing any fuses. When installing a new HV fuse, first insert it into the cap of the

fuse holder, then while holding only the cap, insert the fuse into the holder, push in

and turn clockwise to lock the cap and fuse in place. The main AC fuse is located

in the AC cord jack. Use a small screwdriver to remove the fuse holder.

2. TRIODE/PENTODE SWITCH –

In the PENTODE position, the amp will

operate normally with full output power. In the TRIODE mode, the output power will

be reduced roughly by half. This will allow the volume controls be set higher for a

more “cranked up” tone while slightly reducing the actual volume of the amp.

Always be sure to stop playing before switching. Operating this switch while

playing could cause damage to the amp or tubes.

3. BIAS TEST POINTS AND ADJUSTMENT CONTROL

– These are

provided to simplify measurement and adjustment of the idle current of the output

tubes. Bias adjustment is necessary whenever the output tubes are replaced.

See page 10 for bias adjustment instructions and precautions. The adjustment

control is located on the underside of the chassis near the test points.

4. SPEAKER JACKS –

Always use the jack labeled MAIN first. If an additional

cabinet is to be used, meaning that two cabinets will be connected at the same

time, connect the second cabinet to the jack labeled EXT. Make sure any speakers

you connect can handle more than the output power of the amp. Always set the

impedance selector switch to match the correct speaker load. See chart below.

NEVER OPERATE THE AMPLIFIER WITHOUT A SPEAKER CONNECTED OR

DAMAGE MAY OCCUR AND THE WARRANTY WILL BE VOID.

Speaker “Break-In” – New speaker cones may be tight and stiff. This results in a

brighter tone with less bass and may even be considered “harsh” at times. By the

time your speaker has been played hard for 20 to 30 hours or more, its true

character and tone will become apparent. Until your speaker is fully broken-in, you

may find that you can achieve better tone by reducing the TREBLE control slightly.