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Stealth 5 

Monobloc Power Amplifier  

 
 
 
 
 
 
 
 
 
 
 
 

 

 

 

User’s Manual 

Rev. May 21/03 

 
 
 

Mapletree Audio Design 

Lloyd Peppard 

R. R. 1, Seeley's Bay, Ontario, Canada, K0H 2N0 

(613) 387-3830 

[email protected] 

http://hollowstate.netfirms.com 

 

© Copyright Lloyd Peppard 2002-2003 

Summary of Contents for stealth 5

Page 1: ...er Amplifier User s Manual Rev May 21 03 Mapletree Audio Design Lloyd Peppard R R 1 Seeley s Bay Ontario Canada K0H 2N0 613 387 3830 peppardl post queensu ca http hollowstate netfirms com Copyright Ll...

Page 2: ...t use without a line preamp if desired DC heater power supply for low noise The MAD Stealth 5 is a monobloc audio power amplifier with integral power supply Two units are required for stereo reproduct...

Page 3: ...ine preamplifier the level control should be set to maximum position and the preamp volume control used to set the loudness level For preamps with high gain it may be desirable to adjust the level con...

Page 4: ...SJ7 6SJ7 5Z4 Beam power output Phase splitter Voltage amplifier Full wave rectifier 12A6GT 6SC7GT 12SJ7GT 6SJ7GT 5Z4GT Note that if you want to use the glass 6SC7GT you will need to use a 6SJ7 or 6SJ7...

Page 5: ...5 Appendices _ Specifications Output transformer wiring diagrams Replacement parts list Schematic diagram...

Page 6: ...istance at 1 kHz less than 0 1 damping factor greater than 80 Frequency response 1 W output 12 Hz 20 kHz 0 5 dB Frequency response 5 W output 20 Hz 20 kHz 1 dB Sensitivity for full output 0 3 V rms Po...

Page 7: ...stor 1 R5 R9 R10 100K 0 6W 1 metal film resistor 3 R7 562K 0 4 W 1 metal film resistor 1 R8 150K 0 6 W 1 metal film resistor 1 R11 R12 280K 0 4W 1 metal film resistor 2 R13 200 Ohm 2W 5 metal oxide re...

Page 8: ...AC 60 mA SW1 FU1 2A C10 47 350 C A B 8 7 7 2 7 2 7 2 R19 75K C11 47 350 C12 47 250 V3 12A6 V4 12A6 31 mA 262 V Rev May 15 03 264 V R18 7 5K 2W R15 866 10000 8 P1 100K 31 mA 1 4 5 3 8 6 3 4 5 8 3 4 5 8...

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