Delta Blues
™
Guitar Amplifier
SPECIFICATIONS
POWER AMPLIFIER SECTION
Four 6BQ5/EL84’s with 12AX7 driver
Rated Power & Load:
30 watts RMS into 16 or 8 ohms
Power @ Clipping (Typically):
(5% THD, 1 kHz, 120 V AC line)
30 watts RMS into 16 or 8 ohms
(Bias must be reduced to measure)
Frequency Response:
+0, -2 dB, 50 Hz to 15 kHz,
@ 20 watts RMS into 16 ohms
Hum & Noise:
Greater than 80 dB below rated
power
Power Consumption:
150 watts, 50/60 Hz, 120 VAC
(Domestic)
PREAMP SECTION
Two 12AX7’s
The following specs are
measured @ 1 kHz with the
controls preset as follows:
Pre & Post (lead) @ 0
Reverb Level @ 0
Bass & Treble EQ @ 12
Middle EQ @ 0
Channel Select Out
Boost Switch Out
Nominal level is with Input
Gain @ 6.
Minimum level is with Input
Gain @ 12.
Preamp Normal Input:
Impedance: Very high Z,
470 K ohms
Lead Channel
(Post Gain @ 12):
Nominal Input Level: -40 dBV,
10 mV RMS
Minimum Input Level: -70 dBV,
0.3 mV RMS
Normal Channel:
Nominal Input Level: -17 dBV,
140 mV RMS
Minimum Input Level: -28 dBV,
40 mV RMS
Maximum Input Level: 0 dBV,
1.0 V RMS
Equalization:
(Lead and Normal Channels)
Custom bass, middle, and treble
passive-type EQ
Effects Send:
Load Impedance: 1 K ohm
or greater
Nominal Output Level: -6 dBV,
0.5 V RMS
Effects Return:
Impedance: High Z, 2 M ohms
Designed Input Level: -6 dBV,
0.5 V RMS (Switching jack
provides Effects Send to Effects
Return connection when not used.)
External Footswitch Function:
Normal/Lead Channel Select (when
Lead activated)
Tremolo Defeat
10
