Rear panel specifications, Vacuum tubes – Fender 57 Amp User Manual
Page 8
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rear panel
Specifications
I . ELECTRIC LINE CORD—Connect to a grounded A/C
outlet in accordance with the voltage and frequency
ratings specified for your amplifier.
J . INTERNAL SPEAKER JACK—Plug-in connection for
the 8Ω internal speaker. A speaker must always be
connected at this jack when the amplifier is ON. A
speaker impedance load of 8Ω should be used to avoid
distortion or damage to the amplifier. When using only
the internal speaker jack, a speaker impedance load of
8ohms (minimum) should be used to avoid distortion or
damage to the amplifier.
K . EXTENSION SPEAKER OUTPUT—Plug-in connection
for an external speaker. This jack is wired in parallel with
the INTERNAL SPEAKER JACK {J} and affects the speaker
impedance load. Use 8Ω minimum total. To use the
external speaker output, first disconnect the internal
speaker. Then connect a 16ohm speaker load (minimum)
to the internal speaker jack and another 16ohm speaker
load (minimum) the external speaker jack.
TYPE:
PR 728
PART NUMBERS:
8150500000 (120V~, 60Hz)
8150503000 (240V~, 50Hz) AUS
8150504000 (230V~, 50Hz) UK
8150506000 (230V~, 50Hz) EUR
8150507000 (100V~, 50/60Hz) JPN
POWER REQUIREMENT:
85 W
INPUT IMPEDANCE:
Microphone 1 and Instrument 1: 1MΩ
Microphone 2 and Instrument 2: 136kΩ
OUTPUT IMPEDANCE:
8Ω
POWER AMP OUTPUT:
12.5W into 8Ω @ < 5% THD, 1kHz
SPEAKER:
8Ω, 12", Jensen® P-12Q AlNiCo
DIMENSIONS:
HEIGHT: 16.75 in (43 cm)
WIDTH: 20 in (51 cm)
DEPTH: 9.5 in (24cm)
WEIGHT:
25 lb (11.5 kg)
Product specifications are subject to change without notice.
Tube locations left to right at rear:
5
6
6
12
12
Y
V
V
A
A
3
6
6
X
X
GT GT GT
7
7
A
A*
*For original low-gain 1957 sound, substitute a
12AY7 for this preamp tube.
Replace tubes only with same type
and rating as specified. Please visit the
Accessories area of the Fender website
at: www.fender.com
Vacuum tubes