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CAUTION: - Changes or modifications not expressly approved by BOB CARVER LLC will void 
the manufacturer’s warranty. 

 

 
 

 

Page 7 

Summary of Contents for Black Magic 20

Page 1: ...Black Magic 20 20 Watt Stereo Amplifier OWNERS MANUAL...

Page 2: ...tage to be delivered to the loudspeaker at very low fre quencies providing an exceptional and satisfying low end response SAFE OPERATING CONDITIONS Before connecting the amplifier up please read the f...

Page 3: ...ause the DC restorer circuit eliminates that need Please note we have selected the M version of the EL84 because it has a higher plate volt age rating than the non M tubes made by many manufacturers T...

Page 4: ...for each channel The black bind ing posts are common red posts carry the audio output signals This amplifier is officially rated for 4 ohms minimum To connect the speaker first check the impedance of...

Page 5: ...e feet to do their job by keeping the bottom raised al lowing unimpeded airflow NEW AMPLIFIER SMELL We burn in these amplifier in for 72 hours using a 1 KHZ sine wave driving 4 ohm loads But like a br...

Page 6: ...eferenced into 20 watts Hum 100dB Frequency Response 8 Hz to 40kHz 3dB Full Power Bandwidth 26 Hz to 43 kHz without filters Distortion Less than 0 5 Output Transformer Interleaved windings super wideb...

Page 7: ...lifier Water Do not use the amplifier near water Cleaning Unplug the amplifier from the AC outlet before cleaning Use only a dry cloth to clean Object and Liquid Entry Never insert objects of any kind...

Page 8: ...CAUTION Changes or modifications not expressly approved by BOB CARVER LLC will void the manufacturer s warranty Page 7...

Page 9: ...use abuse or damage by circumstances beyond Bob Carver LLC s control or due to improper operation maintenance or storage or to other than normal use or service The foregoing warranties do not cover re...

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