Feedback, ringing.
(Guitar NOT plugged
in.)
1. Overdrive and Master
Volume controls set too high.
1. Back off Overdrive, Master
Volume and/or Treble controls
until ringing stop.
2, Micro phonic tube.
2. Swap 12AX7 tube in
modules to find the lowest
micro phonic tube, and place it
in the first module. (Seepage
6.)
3. Too many Hi-Gain modules.
(two or more) in one channel.
Remember- the first module is
the most subject to micro
phonic ringing.
3. With two IL-Gain modules in
one channel, we recommend
using an "FET" module in the
first position. If you are
searching for an "ultra FE-
Gain" situation, (3 EE-Gain
modules), try the Hot Mod
mod. We in any of the
position- With the FE-Gain
E.Q. module, simply dial out
the problem frequency on the
module.
Feedback, ringing (With guitar
PLUGGED in.)
1. Micro phonic pickups.
Physical position also effects
this.
1. Have qualified guitar tech
"wax pot" your pickups
Specifications for
Convertible 2000
Amplifiers
Combo
Weight. 57 lbs.
Cabinet Dimensions: 19 3/4" H X 21 25/32" W X 11 3/8" D
Head
Weight: 42 lbs.
Cabinet Dimensions: 10 15/16"H X 2125/32" W X 11 l/6" D
Specifications for Both Combo and Head.
Power Requirements: 120 volts a.c. (U.S. Models)
Power Consumption: 480 watts at full rated output.
Power Circuit: All tube, EL-34 tubes 100 watt rms @8 ohm output@ 120 v.a.c. @ 5% @ 1 khz.
Damping Factor: From damping output Low- 0.1 into 4 ohms. High- 4. 0 into 8 ohms.
Input Impedance: 4.7 meg-ohms adjustable to zero via load resistor plugs.
Input Sensitivity-. 1.2 millivolts. (With Normal-Normal-Normal Modules)
Dynamic Headroom: 4-5 db.
All specifications are subject to change without notice.
