TubE COmpLEmENT & FuNCTIONs:
For best performance, use only tube types specified.
V1 = 12AX7/ECC83/7025
A-Input gain stage
B-2nd gain stage/Overdrive boost
V2 = 12AX7/ECC83/7025
A-Low & High make-up gain/Mid driver
B-Compressor/Graphic EQ driver
V3 = 12AT7/ECC81
A-Graphic EQ return/Effects Send driver
B-Effects return/Preamp Out driver
V4 = 12AX7/ECC83/7025
A-Power Amp input make-up gain/driver
B-Split-load phase inverter
V5 = 12AT7/ECC81
A-"Push" follower for power tube drive
B-"Pull" follower for power tube drive
V6-V13 = EL34/6CA7 (6L6GC Optional) Output tubes
pOwEr Amp sECTION
Rated Power & Load:
300W (rms) into 2, 4, or 8 Ohms (selectable impedance)
pOwEr Amp INpuT sENsITIVITy:
3.0V (rms) / / 10dBv @ ~500k Ohms
Hum & NOIsE:
Greater than XXdB below rated power
pOwEr CONsumpTION:
1000W (rms) @ 100-240VAC; 50-60Hz
prEAmp sECTION:
The measurements were made at the following settings, un-
less otherwise noted:
-Volume=5
-Overdrive=0
All front panel switches=OUT
Low/Mid/High=5
Mid Shift=450Hz
Graphic Sliders=0
Master=5
Resonance=0
Presence=0
prEAmp INpuT sENsITIVITy (NOmINAL):
3.0V(rms) / 10dBV @ 4.0Meg Ohms
0.18V(rms) / -5.0dBV @ 100k Ohms (15dB pad engaged)
COmprEssION rATIO:
Unity to XX:XX (variable)
rOTAry LOw/mId/HIgH EQ:
Low & High shelving Baxandall circuit
Low corner frequency=XXHz
High corner frequency=XXHz
Mid (cut only) frequency centers @200, 450, 600 or 800 Hz
grApHIC EQ:
Nine constant-Q filters with +/-15dB cut or boost
Centers at 40, 63, 100, 160, 250, 400, 800, 1.6k and 3.2kHz
EFFECTs LOOp sENsITIVITy:
Send=0.90V(rms)/-1.0dBV@~80k Ohms
Return=0.90V(rms)/-1.0dBV@~1Meg Ohms
prEAmp OuT sENsITIVITy:
3.0V(rms)/10dBV@~80kOhms
XLr LINE OuT (LEVEL @ 12 O'CLOCk):
75 Ohms, electronically balanced
Pre EQ Send=XXmV(rms)/-XXdBV
Post EQ Send=XXmV(rms)/-XXdBV
FOOTswITCH FuNCTIONs:
Channel Select, Compression, Graphic EQ, Mute
dImENsIONs & wEIgHT:
11.25"H x 22.50"W x 11.25"D
37.0 lbs.
Vb-3
™
specifications