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Manley Labs MONOBLOCK AMPLIFIER manual

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Table of contents for the manual

  • Page 1

    MANLEY LABORATORIES, INC. MANLEY LABORATORIES, INC. 13880 MAGNOLIA AVE. CHINO, CA. 91710 TEL: (909) 627-4256 FAX: (909) 628-2482 OWNER'S MANUAL MANLEY 250 / 100 W ATT MONOBLOCK AMPLIFIER[...]

  • Page 2

    CONTENTS INTRODUCTION 3 MAINS CONNECTIONS 4 CONNECTING YOUR AMPLIFIER 5 DIAGRAM 2 TOP PANEL 6 BIAS PROCEDURES 7 OPERATIONAL NOTES 8 SPECIFICATIONS 9 WARRANTY 10 WARRANTY REGISTRATION 11 SECTION PAGE[...]

  • Page 3

    INTRODUCTION ! THANK YOU!... for choosing the Manley 250/100 Monoblock Amplifiers. Designed by David Manley, the Manley 250/100 Monoblock Amplifiers use 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[...]

  • Page 4

    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[...]

  • Page 5

    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 interconnects from the output of the preamplifier or switching center to the RCA input on the top rear of the amplifiers. IF your source has a truly BALANCED output, connec[...]

  • Page 6

    4 5 6 7 INPUT RCA OUTPUT B+ MAINS FUSES IEC MAINS IN Amplifier Overhead View Tube Location OUTPUT TUBES:10 x RUSSIAN EL34G The EL34 type we recommend are the Russian up-rated EL34G. This has been proven to be the most rugged and reliable of this type and we strongly emphasize that only the RUSSIAN EL34G's should be used in this amplifier. The [...]

  • Page 7

    MAINS IN IEC MAINS FUSE SLO-BLO SPEAKER OUTPUT BINDING POSTS REAR VIEW OF AMPLIFIER RCA INPUT XLR BALANCED INPUT B+ FUSE SLO-BLO BALANCED UNBALANCED SWITCH[...]

  • Page 8

    FRONT VIEW OF AMPLIFIER WITH INSERT REMOVED SHOWING BIAS MEASUREMENT POINTS AND BIAS ADJUST POINTS FRONT VIEW OF AMPLIFIER 1 2 3 4 5 6 7 8 POWER LED STANDBY LED (BLINKING) OPERATE STANDBY EVER-WARM SOFT START SWITCH MAINS POWER ON / OFF SWITCH TETRODE TRIODE OPERATE STANDBY GROUND[...]

  • Page 9

    BIAS PROCEDURES The Manley 250/100 Monoblock Amplifiers 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), a 3/32" allen key, and a small 1/8" flat sc[...]

  • Page 10

    OPERATIONAL NOTES SWITCHING ON -- SOFT START The MANLEY 250/100 is equipped with a SOFT-START circuit which lessens the initial stress the amplifier takes upon turn-on. We recommend that you use this soft start facility whenever you turn the amplifier on and especially when cold. 1. Ensure that the "mains" switch on the front panel is in [...]

  • Page 11

    SPECIFICA TIONS Vacuum Tubes: 10 x EL34G (Output), 2 x 6414 (Driver), 1 x 12AT7 (Input) Output Power TETRODE: 240 Watts (@1.5% THD 5 ohm load) TRIODE: 100 Watts (@1.5% THD 5 ohm load) Frequency Response, +/- .5 dB 10 Hz - 80 KHz Input Sensitivity 1 V Input Impedance 100 KOhm Load Impedance 5 Ohm (fixed) S/N Ratio @440W -80 dB Power Consumption 30 W[...]

  • Page 12

    W ARRANTY 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 firs[...]

  • Page 13

    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[...]