MANLEY LABORATORIES, INC. OWNER'SMANUAL MANLEY REFERENCE DIRECT INPUT 50/50 STEREO AMPLIFIER MANLEY LABORATORIES, INC. 13880 MAGNOLIA AVE. CHINO, CA.
CONTENTS SECTION PAGE INTRODUCTION 3 MAINS CONNECTIONS 4 CONNECTING YOUR AMPLIFIER 5 DIAGRAM TOP OVERHEAD VIEW 6 DIAGRAM REAR VIEW 7 DIAGRAM FRONT VIEW 8 BIAS PROCEDURES 9 OPERATIONAL NOTES 10 SPECIFICATIONS 11 WARRANTY 12 WARRANTY REGISTRATION 13
INTRODUCTION THANK YOU!... for choosing the Manley DIRECT INPUT 50/50 Amplifier. Designed by David Manley, the Manley DIRECT INPUT 50/50 Amplifier uses only the best available components, with the shortest and cleanest signal path possible, and with the use of our own in-house CNC machine shop we can provide you with a amplifier that looks as good as it sounds.
MAINS CONNECTIONS Your amplifier has been factory set to the correct mains voltage for your country. The voltage setting is marked on the serial badge, located on the rear panel. Check that this complies with your local supply. 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 amplifier is rather easy. 1. Connect all LINE LEVEL source components (CD, Tuner, Tape, DAT, etc.) to the designated RIGHT & LEFT inputs on the back of the amplifier. 2. Connect the hot or "+" speaker cable to the red binding post and the common or "-" speaker cable to the black binding post (See diagarm 2) of each channel. Ensure that the other end of the cable is connected correctly to the speaker. Tighten the binding posts by hand.
INPUT RCA OUTPUT B+ MAINS IEC MAINS FUSES IN TUBE BIAS ADJUST POINTS 1 2 3 4 6414 1 6414 3 2 12AT7 4 12AT7 Amplifier Overhead View with top cover removed OUTPUT TUBES:4 x RUSSIAN 6CA7/EL34 The 6CA7's used are the Russian up-rated 6CA7's. This has been proven to be the rugged and reliable of this type and we strongly emphasize that only the RUSSIAN 6CA7's should be used in this amplifier. The MANLEY DIRECT INPUT 50/50 has been thoroughly optimised around this tube.
RIGHT CHANNEL MAINS FUSE SLO-BLO RCA INPUTS LEFT CHANNEL RECORD OUTPUTS AUX AUX CD MAINS IEC RCA INPUTS CD TAPE TAPE TUNER TUNER SPEAKER OUTPUT BINDING POSTS REAR VIEW OF AMPLIFIER
FRONT VIEW OF AMPLIFIER MANLEY AUX CD TAPE TUNER DIRECT INPUT 50/50 STEREO AMPLIFIER READ BIAS VOLUME GROUND 1 2 3 4 MUTE SWITCH POWER SWITCH FRONT VIEW OF AMPLIFIER MUTE LED SHOWING BIAS MEASUREMENT POINTS MANLEY POWER LED
BIAS PROCEDURES The Manley DIRECT INPUT 50/50 uses a fixed bias system that requires very little attention. If you wish 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. On page 8, which shows the FRONT panel of the amplifier, you can see 1 black tip jack and 4 red tip jacks.
OPERATIONAL NOTES TUBE LIFE You should expect extended life from the tubes in your MANLEY DIRECT INPUT 50/50 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 fuse 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 EL34 (Output), 2 x 6414 (Drivers), 2 x 12AT7 (Inputs) 51 Watts (@1.5% THD 5 ohm load) Frequency Response, +/- .5 dB at 50% rated power 10 Hz - 20 KHz Input Sensitivity 375mV Input Impedance 100 KOhm Load Impedance 5 Ohm (fixed) S/N Ratio @50W -80 dB Power Consumption 220 Watts 360 Watts Mains Fuse 100, 110, 120V 220, 240 V Dimensions W=19, D=10, H=5 inches Shipping Weight 41 lbs EACH Quiescent Full Power (@1.
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.