Whammerdyne Truth, Owner'S Manual

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10
Power Output:
Power output, both channels driven at 5% distortion:
4.2 Watts RMS
Peak power output:
6.5 Watts per channel
Frequency Response:
1 Watt RMS -3 dB @ 6 Hz - 140 kHz
Wideband hum and noise:
Input shorted, output into 8 Ohm load
<25 µV RMS
Distortion @ 1 Watt /1kHz:
1.5% THD
S/N Ratio @1kHz, just below clipping:
90 dB
Input sensitivity for full power:
1.3 V RMS
Gain:
14 dB
Gain match left and right channels:
Better than .3 dB
Input Impedance:
at 20 Hz: 30 K Ohms
Output Impedance:
4 Ohm, 8 Ohm
Dimensions:
11.8” W x 18” H x 18” D
Weight:
69 Lbs
Power Consumption @ 120VAC, 60 Hz line voltage:
111 Watts, 1.2 A
Features
The Truth
™
is a non-inverting, zero feedback single-ended pure class
A amplifier D/C coupled tube stage, with no capacitors in the signal
path.
COMPONENTS/ CONTROLS
Vacuum Tubes:
1x 6DJ8 input tube (selected and factory tested)
2x 2A3 output tube (selected and factory tested)
Compatible tubes:
2A3... JJ 2A3-40
6DJ8... 6922, 7308, CCa, E88CC, E188CC
Front panel indicators and controls:
1x ... Custom Simpson
®
plate current meter
(L/R bias for 2A3, L/R bias for 6DJ8)
2x ... Custom Simpson
®
relative-power meters,
(approx. 1 Watt RMS into 8 Ohms @ the start of the red marker & 3.5 Watts
RMS @ full scale)
2x... Independent coarse L/R stepped volume control,
Rotary switch, 12-position:
0, -5, -8.75, -12.5, -16.25, -20, -23.75, -27.5, -31.25, -35, -38.5 dB, mute
2x... Independent fine L/R stepped volume control,
Rotary switch, 3-position:
0, -1.25, -2.5 dB
1x ... Main power switch, push button, w/LED “ON” indicator
1x ... Run - Calibrate switch
toggle switch, 2-position
1x ... Rotary 4-position selector switch for current meter
(L/R bias for 2A3, L/R bias for 6DJ8)
Rear Panel Connectors:
IEC socket with integral 2 Amp Slo-blo 5x20 mm fuse - Littlefuse ® 120 VAC
60 Hz line voltage
2x... RCA audio inputs
(left and right)
6x... Speaker connection terminals
(left and right - Common, 4 Ohm, and 8 Ohm)
SPECIFICATIONS
(TYPICAL)
All measurements taken after 1/2 hour warm up time
WHAMMERDYNE HEAVY INDUSTRIES RESERVES THE RIGHT TO CHANGE OR MODIFY THE
SPECIFICATIONS WITHOUT FURTHER NOTICE