Ampeg J-20 JET Owner's Manual download pdf (Page 12)

J-20 Jet All-Tube Guitar Amplifier with Tremolo

J-20 JET TECHNICAL SPECIFICATIONS

Output Power Rating 20 W rms @ 5% THD, 8 ohm load, 120 VAC

Noise < 60 mV (Volume and Tone @ 0)

< 90 mV (Volume and Tone @ 10)

Gain

Bright

: 70 dB (±6 dB), all controls @ 10

Normal: 64 dB (±6 dB), all controls @ 10

Maximum Input Signal 600 mV rms @ 1 kHz

Tone ±30 dB @ 10 kHz

Speaker Specs 12", 20 W, 8 ohm, 1.75" voice coil diameter,

30 oz alnico magnet

Extension Speaker 8 ohms minimum nominal impedance

Preamp Tubes (3) 12AX7A

Power Tubes (2) 6V6

Rectifier Tube (1) 5AR4

Power Requirements 100-120 VAC, 60 Hz, 120 VA

220-240 VAC, 50 Hz, 120 VA

Size (H x W x D) 17.5 in/44.5 cm x 20.0 in/50.8 cm x

9.8 in/24.9 cm

Weight 25.0 lb/11.3 kg

Bright input is boosted 20 dB @ 10 kHz (over Normal input)

The J-20 Jet is covered with a durable fabric-backed vinyl material. Wipe it clean with a lint-free cloth.

Never spray cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish.

Ampeg continually develops new products, as well as improves existing ones. For this reason, the specifications

and information in this manual are subject to change without notice.

“Ampeg” is a registered trademark of LOUD Technologies Inc. All other brand names mentioned are trademarks

or registered trademarks of their respective holders and are hereby acknowledged.

www.ampeg.com

@2007 LOUD Technologies Inc.

16220 Wood-Red Road NE • Woodinville, WA 98072

Part No. 47-822-01 Rev. A 06/07

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Ampeg J-20 JET Owner's Manual Page 12