Mapletree Line 2CRM User Manual Download | Manualshive

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Modular Series

Line 2CRM

Stereo Line Preamplifier

PS 2D

Power Supply

User’s Manual

Rev. Dec 6, 2019

Mapletree Audio Design

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

(613) 387-3830

www.mapletreeaudio.com

info@mapletreeaudio.com

© Copyright Lloyd Peppard 2002-2019

-Specifications are subject to change without notice-

Line 2CRM P reamplifier

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Summary of Contents for Line 2CRM

Page 1: ...y User s Manual Rev Dec 6 2019 Mapletree Audio Design R R 1 Seeley s Bay Ontario Canada K0H 2N0 613 387 3830 www mapletreeaudio com info mapletreeaudio com Copyright Lloyd Peppard 2002 2019 Specifications are subject to change without notice Line 2CR M P r eamplifie r ...

Page 2: ... handset Bypass switch on front panel for home theatre HT operation Exclusive use of NOS octal tubes known for low distortion and musicality Switchable for use with 12SN7GT or 6SN7GTB tubes High input impedance and low output impedance Parallel output jacks for bi amp headphone amp HT applications Audio grade polypropylene film capacitors in signal path 2 ...

Page 3: ...reamplifier chassis CAUTION Do not operate the power supply when it is not connected to the preamp Damage of components may result Once the interconnecting power cord is securely attached between the two chassis and the line cord is plugged in the power supply can be turned on The pilot lamp on the power supply chassis indicates that the unit is on It takes about 30 seconds for the tubes to reach ...

Page 4: ...nel jacks are at the top and right channel jacks are at the bottom The line input impedance is 100k with standard 10 dB gain which provides minimal loading of any line source such as DAC CD DVD player tape deck tuner or PC sound card The output impedance is less than 500 which is suitable for connection to a power amplifier s through cables up to 10 ft in length The heater voltage switch located n...

Page 5: ... clock position It is designed to avoid unexpected high volume levels when powering up Tubes_____ The tubes supplied are new old stock NOS and have been pre tested A burn in period of several hours may be needed to achieve the best sonic performance Tube life should be thousands of hours Aging tubes may result in a reduced gain in one or both channels or an increase in noise levels Infrequently a ...

Page 6: ...or 2 years to the original purchaser for failure of parts 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 2CRM Specifications______ Frequency response 1 V output 100K load 20 Hz 20 kHz 0 3 dB any volume control setting Max output voltage 100K load 15 V rms Gai...

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