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SPECIFICATIONS
POWER
AMPLIFIER
SEC-
TION
Rated Power & Load
50 W RMS into 8 ohms with
DDT™ compression
Power @ Clipping (Typically)
(1 kHz, 120 V AC line)
50 W RMS into 8 ohms @
1% THD
55 W RMS into 8 ohms @
5% THD
Frequency Response
+0, -2 dB, 30 Hz to 20 kHz,
@ 40 W RMS into 8 ohms
Total Harmonic Distortion
Less than 0.2%, 100 mW to
40 W RMS, 30 Hz to 10 kHz,
8 ohms, Typically below 0.1%
DDT™ Dynamic Range
Greater than 20 dB
DDT™ Maximum THD
Below 0.6% THD for
6 dB overload
Below 1% THD for
16 dB overload
Hum & Noise
Greater than 90 dB below
rated power
Power Consumption (Domestic)
150W @ 120 V AC, 50/60 Hz
PREAMP SECTION
The following specs are measured ©
1 kHz all EQ flat © 0 dB.
Master Reverb set @ 0.
Nominal values are with levels @ 5.
Minimum values are with levels @ 10.
High Gain Instrument Inputs
(Phone Jack)
Input impedance: 220 K ohms
Nominal
input level: -20 dBV,
100 mV RMS
Minimum
input level: -40 dBV,
10 mV RMS
Maximum
input level:
+10 dBV,
3 V RMS
Low Gain Instrument Inputs
(Phone Jack)
Input impedance: 44 K ohms
Nominal input level: -4 dBV,
200 mV RMS
Minimum input level: -34 dBV,
20 mV RMS
Maximum input level: +16 dBY,
6 V RMS
Pre EQ Patch Out (Stereo
Phone Jack Ring)
Function: Low level effects send
Load impedance: 10 K ohms or
greater
Nominal output level: -4 dBV,
0.2 Y RMS
Pre EQ Patch In (Stereo Phone
Jack Ring)
Function: Low level effects return
Input impedance: 220 K ohms
Designed input level: -14 dBV,
0,2 V RMS
(Switching jack providing pre EQ
patch out to pre EQ patch in con-
nection when not used)
Preamp Output (Phone Jack)
Function: High level post EQ
Load impedance: 1 K ohms
or greater
Nominal output level: O dBV,
1 V RMS
(at the DDT™ limit of
5 W RMS output)
BLOCK DIAGRAM
Maximum output level: +18 dBV,
8 V RMS
Power Amp Input
(Phone Jack)
Function: High level post
EQ return
Input impedance: 22 K ohms
Designed input level: 0 dBV,
1 V RMS
(Switching jack providing preamp
output to power amp input connec-
tion when not used)
Headphone Output (Stereo
Phone Jack, Mono Signal)
Load impedance: 4 ohms or
greater
Nominal power output: 100 mW
into 4 ohms
(Switching jack which disconnects
the internal speaker when plug is
inserted)
The following specs measured at nominal
settings, all phone jack inputs terminated
with 47 K ohms.
Frequency Response
(Channel in/preamp out @ +0,
-2 dB, 60 Hz to 20 kHz
System Distortion
(Channel in/preamp out, 60 Hz -
20 kHz @ 1 V RMS)
Less than 05% THD, typically
below 01%
Preamp Hum & Noise
-78 dBY (all channels operational)
Push Boost
+12 dB @ 1 kHz (special EQ)
Master Equalization
+15 dB © 80 Hz ( 8 kHz, shelv-
ing
+15 dB @ 600 Hz, peak/notch
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