MANLEY LABORATORIES, INC. OWNER'SMANUAL MANLEY 120 WATT MONOBLOCK AMPLIFIER Manley Laboratories, Inc. 13880 Magnolia Ave. Chino, CA. 91710 tel: (909) 627-4256 fax: (909) 628-2482 emanley@manleylabs.com http://www.manleylabs.
CONTENTS SECTION PAGE INTRODUCTION 3 MAINSCONNECTIONS 4 CONNECTINGYOURAMPLIFIER 5 BIAS PROCEDURES 6 OPERATIONAL NOTES 7 SPECIFICATIONS 8 WARRANTY 9 WARRANTY REGISTRATION 10
INTRODUCTION THANK YOU!... for choosing the Manley 120 Watt Monoblock Amplifiers. Designed around the concept that less is more, the Manley 120 Watt Monoblock Amplifiers very fine components, with the shortest and cleanest signal path possible, and with the use of our own milling equipment we can provide you with an amplifier that looks as good as it sounds. We have developed a magnetics winding department right here at Manley Labs where we design and wind the audio transformers.
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 colored wires should be connected to the appropriate plug terminals in accordance with the following code.
CONNECTING YOUR AMPLIFIER IMPORTANT: PLUG IN THE TUBES. We do not ship the amps with the output tubes inserted to prevent breakage. Before plugging in anything, locate the 2 tubes (KT-90s or 6550s) packed with the amp and insert them in the two large tube sockets. The sockets are marked 1 and 2, the tubes are marked 1 and 2 - Put 1 in 1 and 2 in 2. This configuration is how the amps were tested and adjusted. Otherwise you will have to re-bias.
BIAS PROCEDURES The Manley 120 Watt Amplfier uses a variable "fixed bias" system that requires very little attention. If you wish to adjust or check the bias, complete the following steps. For this procedure you will need a multimeter to read millivolts (less than 2 volt range) and a small flat screwdriver. 1. Looking at the front section of the top plate of the amplifier, you can see 2 red tip jacks and 1 black tip jack.
OPERATIONAL NOTES SWITCHING ON The power switch is located on the lower left hand corner of the front panel. Push the top of the rocker switch (1) to turn on the amplifier and the bottom of the rocker to turn off the amplifier. The LED on the right side of the front panel will illuminate indicating that the amplifier is operating. Do not turn on and off the amplifier in rapid succession. RUNNING It is not recommended that you leave your amplifier permanently switched on.
SPECIFICATIONS Vacuum Tubes: 2 x KT-90 or 6550 (or good KT-88), 1 x 5751, 1 x 7044 Output Power 120 Watts tetrode, 65 triode Frequency Response, +/- 1 dB 20 Hz - 50 KHz Input Sensitivity 1 Volt nominal Input Impedance 100 KOhm Load Impedance 5 Ohm. Factory preset for 5 Ohm S/N Ratio @100W -100 dB Power Consumption 120 Watts 360 Watts Mains Fuse 100, 110, 120V 220, 240 V Dimensions W=12, D=10, H=6 inches W=19, D=12, H=6 (panel=3.
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 Or you may FAX it to: 909-628-2482 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 Manley Laboratories.
