Vacuum tubes

Replace tubes only with same type and rating as specified. Please visit the Accessories area of the Fender website at: www.fender.com

rear panel

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 Ω internal speaker. A speaker must always be connected at this jack when the amplifier is ON. A speaker impedance load of Ω 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 Ω minimum total.

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.

Specifications

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:

 

 

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.

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Fender 57 Deluxe Amp manual Vacuum tubes Rear panel, Specifications