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Related Manuals for Bob Carver Black Magic 25 Stereo
Summary of Contents for Bob Carver Black Magic 25 Stereo
- Page 1 Operating Manual CORPORATION c06-09-22...
- Page 2 6. Clean only with a dry cloth. or objects have fallen into the apparatus, the apparatus has been 7. Install in accordance with the Bob Carver Company instructions. exposed to rain or moisture, does not operate normally, or has 8. Do not install in close proximity to heat sources such as radiators, been dropped.
- Page 3 Enjoy! If you don’t hear any sound, turn off your preamp/DAC and Black Magic 25, and re-check – your connections, or contact Bob Carver Corpo- ration at Bob Carver Company – 6260 E. Riverside Blvd. #11 | Loves Park, IL, 61111...
- Page 4 “It’s time to start enjoying years of musical • DC Restorer circuit, an exclusive to Bob Carver enjoyment! But first, please take the time to read designs, keeps the output tubes running cool,...
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Page 5: Technical Assistance
Black Magic 25 and any other brands please record the serial number, purchase date that may be part of your system. If you or your and Bob Carver Company Dealer name in the Dealer wish additional help concerning a spaces provided. -
Page 6: Placement And Cooling
12AT7 12AX7 12AT7 Placement and Cooling EL-34 KT120 or Cool air is drawn from under the chassis by the KT88 or 6550’s heat from the tubes acting as an air pump, and DO NOT exhausting the warm air out the chassis through MIX! the vents. - Page 7 Our amplifiers simply do not run hot. Like their amplifiers — a truly remarkable accomplishment more expensive siblings, they are the coolest and typical for Bob Carver, Absolute Sound running tube type amplifiers ever, allowing you Magazine Hall of Fame designer.
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Page 8: General Operation
General Operation. all of the esoteric cables available. The Black Magic 25 speaker terminals will Bob has intentionally made the Black Magic accept spade lugs, banana plugs or bare wire. extremely simple to operate. Volume (gain) is If using bare wire, remove half an inch of determined by your preamplifier or DAC. -
Page 9: Input Connections
Input Connections. (B+) is a 1.0 ampere and should be replaced with The red RCA-type input is for the right channel; the same type and rating. black is for the left channel. As with speaker If the fuse blows during cables, you have many esoteric options as well bench testing, it may be as “conventional”... - Page 10 control (located on the rear of the will be required when changing tube types. amplifier) for 100 mA, after the Output tubes must always be 4 of the same type. unit has warmed up for about 20 No mixing. minutes. The normal range to use is Monitoring and Tube Troubleshooting.
- Page 11 Tube Tester • Remove all output tubes and turn the preamp volume control all the way down. The front panel meter may be used to test the • Turn the amp on and leave it on. tubes. • While monitoring the current, put a pair of •...
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Page 12: Circuit Description
New Amplifier Smell • Keep track of each reading, and repeat until all tubes have been checked. If any single tube Like a brand new car, this amplifier possesses does not bias up or “runs away” with its cur-rent a “new amplifier smell,” even though it has been climbing substantially higher, ≈200% than the built from both new and vintage parts. -
Page 13: Specifications
Specifications sections are used with load regulation obtained through constant current loading. Turn-on in-rush current limiting is provided by Gain 29 dB a thermistor, bias voltage adjustment by a bias More than 24 Watts Per control, and bias current is measured by a meter Channel, both channels driven at eight ohms that simultaneously senses current for all four... - Page 14 Bob Carver remaining after original shipment to the retailer. Company reserves the right to modify the design...
- Page 15 In the event warranty service is of the date of purchase or fifth anniversary of the needed under these conditions, the owner of the date of shipment to the authorized Bob Carver equipment must provide a copy of his purchase Company. ...
- Page 16 Bob Carver Company 6260 E. Riverside Blvd. #116 Loves Park, IL, 61111 ATTN: Customer Service CORPORATION ©2018-2022 Bob Carver Company, all rights reserved. Bob Carver is a trademark of Bob Carver Company. All other trademarks are property of their respective holders. c06-13-22...
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