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Modular Series
Line 2C Stereo Line Preamplifier
PS 2D Power Supply
User's Manual
Rev. Mar 10, 2019
Mapletree Audio Design
R. R. 1, Seeley's Bay, Ontario, Canada, K0H 2N0
(613) 387-3830
www.mapletreeaudio.com
info@mapletreeaudio.com
-Specifications are subject to change without notice-
© Copyright Lloyd Peppard 2002-2019
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Summary of Contents for Mapletree Line 2C
- Page 1 Modular Series Line 2C Stereo Line Preamplifier PS 2D Power Supply User’s Manual Rev. Mar 10, 2019 Mapletree Audio Design R. R. 1, Seeley's Bay, Ontario, Canada, K0H 2N0 (613) 387-3830 www.mapletreeaudio.com info@mapletreeaudio.com -Specifications are subject to change without notice-...
- Page 2 Introduction The Mapletree Audio Design Line 2C Stereo Line Preamplifier offers the audiophile a number of desirable features: Bypass switch on front panel for home theatre (HT) operation. Exclusive use of NOS octal tubes, known for low distortion and musicality.
- Page 3 Power Supply Connections______ The Mapletree Audio Design PS 2D power supply provides +12 VDC (regulated) heater supply voltage and +200 VDC B+ plate supply voltage at a current of 15 mA (see specifications). It utilizes ultra high-speed diode bridge rectification to achieve low noise and high efficiency.
- Page 4 The heater voltage switch located next to the power input jack accommodates either 12SN7GT (supplied) or 6SN7GT tubes in your Line 2C. While it will do no damage to switch to 6SN7 position with 12SN7 tubes installed, operation in the 12SN7 position...
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Page 5: Front Panel Controls
Front Panel Controls Line 2 C Pr e a mpli fie r The front panel controls are (left to right) the 3-position Source selector switch (Line1- Line2-Line3), Mode switch (Stereo or HT), Volume control, and Balance control. In HT mode, the selected input source is connected to the output jacks and the active preamp output is disabled;... - Page 6 (excluding tubes) and workmanship. Tubes are warranted for 90 days exclusive of shipping cost. Service, including parts and labor (but excluding shipping), is free within the warranty period. Line 2C Specifications______ Frequency response (1 V output, 100K load): 20 Hz–20 kHz –0.3 dB (any volume control setting) Max.