Bob Carver BLACK BEAUTY VTA305M Owner's Manual

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BLACK BEAUTY 305 WATT VACUUM TUBE AMPLIFIER
This manual provides general, ongoing use and safety information of the Black Beauty 305 (VTA305M)
Mono Block Amplifier.
General
The new series of mono block amplifiers are the perfect blend of form and function and the ideal choice
for serious music listeners. The Black Beauty is conservatively rated at 305 Watts rms into 8 ohms and
was designed to drive the most demanding speakers. These amplifiers offer extreme performance that is
difficult to believe, and each amplifier features a high impedance input, an automatic DC restorer circuit,
a “set and forget” bias adjustment, and low idle current which greatly increases output tube life. They
have ultra-wide bandwidth output transformers with interleaved windings capable of the most nuanced
voice as well as huge peak output capacity. Selectable feedback control allows the user to change the
sound of the amplifier from vintage classical to modern contemporary.
From a listening perspective these amplifiers provide a warm, rich sound with a sumptuous and
enveloping sound stage, a great front to back depth of field, and very tight, pin-point imaging within that
larger acoustic. A special current feedback circuit allows the amplifier to “listen to the room” via
feedback from the speakers acting as microphones (using the law of reciprocity). The room-speaker-
amplifier interaction provides a sense of believable ambience and acoustic space that is thoroughly
realistic and quite enjoyable. Additionally, the transformer output impedance allows the signal to follow
the impedance curve of the speaker system, allowing more voltage to be delivered to the loudspeaker at
very low frequencies providing an exceptional and satisfying low end response.
Safe Operating Conditions
Because of the high power available it is necessary to emphasize some prudent and safe operating
conditions.
1. Be cautious when lifting the amplifier. It weighs 42 pounds. Make certain that what it is placed
on can support the weight.
2. The amplifier should be situated so that its location or position does not interfere with its
proper ventilation. The amplifier should never be placed near or over a radiator or heat
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Summary of Contents

Page 1 - Safe Operating Conditions

1 | P a g e BLACK BEAUTY 305 WATT VACUUM TUBE AMPLIFIER This manual provides general, ongoing use and safety information of the Black Beauty 305 (V

Page 2 - VACUUM TUBES

10 | P a g e If you have any questions concerning the operation or maintenance of this equipment, please contact: CUSTOMER SERVICE B

Page 3 - REAR PANEL CONNECTIONS

2 | P a g e register. The amplifier should not be placed in a built-in installation such as a bookcase or cabinet that may impede the flow of air a

Page 4 - SPEAKER CONNECTIONS

3 | P a g e FEEDBACK SWITCH The small switch mounted on the top front of the chassis controls the amount of negative feedback. When the toggle ha

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4 | P a g e be replaced with the same type. Do not under any circumstances use "slow-blo" fuses. Both fuses are fast blow fuses. ADJUSTI

Page 6 - TUBE TESTER

5 | P a g e POWER SWITCH Up is on, down is off. There is no power-on indicator except for the glow of the tubes; you will have to remember whethe

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6 | P a g e TUBE TESTER The front panel meter may be used to test the tubes. Remove all the large power output tubes; plug the amp into the AC wal

Page 8 - Safety Information

7 | P a g e Black Beauty 305W Mono Block Amplifier Specifications Number of Line Inputs 1 Input impedance 100 k ohms Input Stage 12AX7 current

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8 | P a g e Safety Information IMPORTANT SAFETY INFORMATION Read Information — All the safety and operating information should be read before

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9 | P a g e Replacement Parts — When replacement parts are required, be sure the service technician has used replacement parts specified by the manu

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