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Table of Contents
Super Stealth
Monobloc Power Amplifier
Special Edition
Users' Manual
Rev. Oct. 24/12
Mapletree Audio Design
Lloyd Peppard
R. R. 1, Seeley's Bay, Ontario, Canada, K0H 2N0
(613) 387-3830
info@mapletreeaudio.com
http://www.mapletreeaudio.com
© Copyright Lloyd Peppard 2002-12
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Table of Contents
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Summary of Contents for Mapletree Super Stealth
- Page 1 Super Stealth Monobloc Power Amplifier Special Edition Users' Manual Rev. Oct. 24/12 Mapletree Audio Design Lloyd Peppard R. R. 1, Seeley's Bay, Ontario, Canada, K0H 2N0 (613) 387-3830 info@mapletreeaudio.com http://www.mapletreeaudio.com © Copyright Lloyd Peppard 2002-12...
- Page 2 Introduction The Mapletree Audio Design Super Stealth Special Edition Monobloc Vacuum Tube Power Amplifier provides 8 W of clean output power within a compact chassis and offers a number of desirable features: ? ? The exclusive use of high quality new old stock (NOS) or current production tubes that can be obtained at modest cost from many suppliers.
- Page 3 Adjustments____ Level control (optional) – The sensitivity of the Super Stealth is 0.45 V to produce full power output. For some high-output preamps, it may be advantageous to reduce the input level in order to shift the preamp volume control nearer the mid-position for normal listening.
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Page 4: Specifications
Specifications___ Tube complement: 1 x 6/12SJ7, 1 x 6/12SL7GT, 2 x 6V6/6V6GTGT and 1 x 5AR4GT Output configuration: Class AB ultra-linear push-pull with self bias (6V6GT matched pair recommended) Phase inverter: cathode-coupled Heater supply: dc heater voltage for all tubes Rated power output (8? ): 8 W Frequency response at 2 W output: 20 Hz–20 kHz –0.5 dB Frequency response at 5 W output: 20 Hz–30 kHz –1 dB... - Page 5 Mapletree Audio Design Super Stealth Monobloc Power Amplifier Special Edition © Copyright Lloyd Peppard 2004-12 Rev. Oct. 2612 6V6/6V6GT Red test point (DC Bal.) +291 V See User’s Manual 0.047/400 6/12SL7GT 6/12SJ7 for secondary connection details for other +102 V...
- Page 6 The 6/12SL7GT is a high gain dual triode well suited to the phase splitter role in the Super Stealth. The “special red” 5692 is a substitute for the 6SL7GT. The 6SU7GT is also a substitute for the 6SL7GT and offers matched triode sections, although this is not a requirement of the circuit used.
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