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Power| output power rating | 100 watts @ 5% THD, 8 ohm load, 120VAC |
|---|---|
| power requirements (120VAC) | 60Hz, 400VA |
| power requirements (100VAC) | 50/60Hz, 400VA |
| power requirements (230VAC) | 50/60Hz, 400VA |
Speaker Specifications| speaker size and rating | Ampeg Vintage 15”, 8 ohm, 150 watt, 2” voice coil, 56 oz magnet |
|---|---|
| high efficiency piezo tweeter | 8 ohm, 150 watt (w/network) |
| crossover frequency | 3kHz |
Control Specifications| ultra high switch | 6dB Boost @ 4kHz |
|---|---|
| ultra low switch | 10dB Boost @ 40Hz |
| bass control | 25dB Range @ 40Hz |
| mid control | 34dB Range @ 200, 400, 900, 1.5k or 2.5kHz |
| treble control | 30dB Range @ 4kHz |
Input Specifications| input impedance (0dB) | 3M ohms |
|---|---|
| input impedance (-15dB) | 47k ohms |
| max. input signal level accepted (0dB) | 1V RMS |
| max. input signal level accepted (-15dB) | 5.75V RMS |
Performance| total system gain | 50dB w/tones flat, Ultra Low and Ultra High off |
|---|---|
| signal to noise ratio | 90dB |
Weight and Dimensions| dimensions | 24”W x 16-1/2”D x 24-1/4”H w/amp flipped inside, w/out caster board |
|---|---|
| height w/amp flipped out, w/out caster board | 32-7/8” H |
| height w/caster board | 37-1/4” H |
| weight | 117 lbs |
Details all front panel controls including Gain, EQ, Master, and switches.
Covers input/output jacks, line level controls, and balanced output.
Mentions the tube design, speaker, enclosure, and accessories.
Covers electrical safety, operational, and usage precautions.
Advises caution regarding high sound pressure levels and hearing protection.
Describes input jacks and the Gain control for signal adjustment.
Details Bass, Mid, Frequency, Treble, and tone boost switches.
Covers Master volume, 100W/60W selection, and On/Standby operation.
Details AC Line In, Fuse protection, and Bias Select switch.
Covers Speaker Jacks and Impedance Selector for cabinet matching.
Describes Line Out/In, Line Out Level, Lift/GND, and Balanced Out.
Covers Full Range Inputs and the High Frequency Attenuator switch.
Discusses the history, types, usage, and sonic characteristics of vacuum tubes.
Covers factors affecting tube life and signs of failure requiring replacement.
Explains bias voltage and stresses professional adjustment for performance and safety.
Covers impedance matching, cooling, tube replacement, and protection.
Provides recommended control settings for Jazz, Funk, Rock, and Country music styles.
Details output power, speaker ratings, control ranges, and signal characteristics.
Lists power requirements, physical dimensions, and total weight.
Illustrates the audio signal path and component interactions within the amplifier.
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