JSX™
SPECIFICATIONS
POWER AMPLIFIER SECTION:
Tubes:
Four EL34 tubes with 12AX7 driver
Rated Power & Load:
120 Watts RMS into 16, 8 or 4 Ohms
Power @ Clipping:
(typically @ 5% THD, 1 kHz, 120 VAC line) 120 Watts RMS into 16, 8 or 4 Ohms
Frequency Response:
Hum & Noise:
Greater than 76 dB below rated power
Power Consumption:
Domestic: 400 Watts, 50/60 Hz, 120 V AC
Export: 400 Watts, 60 Hz,
PREAMP SECTION:
Tubes:
Three 12AX7 tubes
The following specs are measured @ 1 kHz with the controls preset as follows:
All EQ controls @ 5
Ultra & Crunch Volumes @ 10 Master Volume @ 5
Resonance and Presence controls @ 5 Effects Send @ 0
Effects Return @ 10
Nominal levels are with Gain @ 5 Minimum levels are with Gain @ 10 All levels increased by 6 dB if using Low Gain input
Clean Channel:
Nominal Input Level:
Minimum Input Level:
Maximum Input Level: 0 dBV, 1 .0 mV RMS
Crunch Channel:
Nominal Input Level:
Minimum Input Level:
Ultra Channel:
Nominal Input Level:
Minimum Input Level:
Effects Send:
Load Impedance: 47 k Ohms or greater Minimum Output:
0 dBV, 1 V RMS
Effects Return:
Impedance: High Z, 80 k Ohms
Minimum Input Sensitivity:
Maximum Input Sensitivity:
0 dBV, 1 V RMS
Line Output:
Load Impedance: 47 k Ohms or greater Adjustable Output:
+/- 20 dBV, 0.1V
Note: For proper ventilation‚ allow 24" clearance from nearest combustible surface.
Remote Footswitch:
Special
System Hum & Noise @ Nominal Level:
(Clean channel - 20 Hz to 20 kHz unweighted) Greater than 74 dB below rated power (Adjustable noise gate circuitry for Ultra & Crunch)
Equalization:
Custom bass, mid & treble
Separate active
Fat switches on Ultra & Crunch modifies low frequency response
Resonance and presence damping EQ controls in power amp
Dimensions & Weight:
11" (279 mm) H x 26.5" (673 mm) W x 11" (279 mm) D
52 lbs.(23.6 kG)
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