MANLEY LABORATORIES, INC. OWNER'SMANUAL MANLEY LAB SERIES STEREO 75+75 WATT AMPLIFIER MANLEY LABORATORIES, INC. 13880 MAGNOLIA AVE. CHINO, CA.
CONTENTS SECTION PAGE INTRODUCTION 3 MAINS CONNECTIONS 4 CONNECTING YOUR AMPLIFIER 5 DIAGRAM TOP VIEW 6 DIAGRAM REAR VIEW & FRONT VIEW 7 BIAS PROCEDURES 8 OPERATIONAL NOTES 9 SPECIFICATIONS 10 WARRANTY 11 WARRANTY REGISTRATION 12
INTRODUCTION THANK YOU!... for choosing the Manley LAB SERIES STEREO 75 + 75 watt Amplifier. Designed by David Manley, the Manley LAB SERIES STEREO 75 + 75 watt Amplifier uses only the best available components, with the shortest and cleanest signal path possible. The circuit and the components used have been chosen carefully after years of development and refinement for reliability, constancy and most importanly, musical, accurate, and emotional delivery of the sound.
MAINS CONNECTIONS Export units for certain markets have a moulded mains plug fitted to comply with local requirements. If your unit does not have a plug fitted the coloured wires should be connected to the appropriate plug terminals in accordance with the following code.
CONNECTING YOUR AMPLIFIER Setting up your amplifiers is rather easy. 1. Connect all source components (turntable, CD, Tuner, Tape DAT, etc.) to your preamplifier. 2. Connect the RCA interconnects from the output of the preamplifier or switching center to the RCA input on the back of the amplifiers. 3. Connect the hot or "+" speaker cable to the red binding post and the common or "-" speaker cable to the black binding post. Ensure that the other end of the cable is connected correctly to the speaker.
TOP VIEW 1 BIAS ADJUSTMENT POINTS 2 3 4 1 2 3 12AT7 6414 6414 1 2 4 12AT7 3 4 BIAS MEASUREMENT POINTS Amplifier Overhead View Tube Location & Bias adjust points OUTPUT TUBES:4 x RUSSIAN 6550 The 6550's used are the Russian up-rated 6550A's. This has been proven to be the rugged and reliable of this type. The MANLEY STEREO 75 + 75 has been thoroughly optimised around this tube. Use of unapproved tube types can and will void your warranty.
REAR VIEW RIGHT B+ FUSES MAINS IN MAINS SPEAKER RIGHT 4/10 AMP IEC FUSE RCA OUTPUT SLO-BLO 120V 5A INPUT BINDING 240V 3A POSTS SLO-BLO LEFT SPEAKER LEFT OUTPUT RCA BINDING INPUT POSTS FRONT VIEW MANLEY LABORATORIES, INC DESIGNED BY DAVID MANLEY LAB SERIES 75 WATT STEREO
BIAS PROCEDURES The Manley STEREO 75 + 75 watt Amplifiers use a fixed bias system that requires very little attention. We recommend checking the bias every 2-3 months or any time you replace an output tube. To adjust or check the bias, follow the following steps. For this procedure you will need a voltmeter (a hand held autoranging DMM digital multimeter is the easiest) and a small flat screwdriver. 1.
OPERATIONAL NOTES TUBE LIFE You should expect extended life from the tubes in your MANLEY STEREO 75 if you adhere to the procedures described above and check your bias at least once every 2-3 months. We stock all the tubes in these amplifiers should you ever need replacements (and at very reasonable prices too!) FUSES The fuses used in your amplifier are standard 1/4" x 1 1/4" SLO-BLO types. The correctly rated fuse has been installed at the factory for your country's voltage.
SPECIFICATIONS Vacuum Tubes: Output Power 4 x 6550A (Output), 2x 6414 (Driver), 2 x 12AT7 (Input) 80 Watts (@1.5% THD 5 ohm load) Frequency Response, +/- .5 dB 10 Hz - 30 KHz Input Sensitivity 800 mV Input Impedance 100 KOhm Load Impedance 5 Ohm (fixed) S/N Ratio @75W -80 dB Power Consumption 120 Watts 540 Watts Mains Fuse 100, 110, 120V 220, 240 V B+ Fuse 4/10A (250V)SLO-BLO Dimensions W=14.
WARRANTY All Manley Laboratories equipment is covered by a limited warranty against defects in materials and workmanship for a period of 90 days from date of purchase to the original purchaser only. A further optional limited 5 year warranty is available to the original purchaser upon proper registration of ownership within 30 days of date of first purchase.
WARRANTY REGISTRATION We ask that you please fill out this registration form and send the bottom half to: MANLEY LABORATORIES REGISTRATION DEPARTMENT 13880 MAGNOLIA AVE. CHINO CA, 91710 Registration entitles you to product support, full warranty benefits, and notice of product enhancements and upgrades. You MUST complete and return the following to validate your warranty and registration. Thank you again for choosing to use Manley Laboratories. MODEL ____________________ SERIAL No.