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Manley INTEGRATED AMPLIFIER manual

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Table of contents for the manual

  • Page 1

    MANLEY LABORATORIES, INC. OWNER'S MANUAL THE "STINGRA Y" INTEGRATED AMPLIFIER MANLEY LABORATORIES, INC. 13880 MAGNOLIA AVE. CHINO, CA. 91710 TEL: (909) 627-4256 FAX: (909) 628-2482 email: emanley@manleylabs.com Web site: http://www.manleylabs.com REV. 3-7-2001[...]

  • Page 2

    CONTENTS INTRODUCTION 3 MAINS CONNECTIONS 4 OPERATIONAL NOTES 5 CONNECTING YOUR STINGRAY 6&7 SIMPLE TROUBLESHOOTING 8 FRONT PANEL, LAMP, BACK PANEL 9 TUBE LOCATIONS 10 SIDE PANELS 11 OPTIMIZING YOUR SOUND SYSTEM 12&13 REPLACING TUBES & SETTING BIAS 14&15 CREDITS 16 SPECIFICATIONS 17 WARRANTY 18 WARRANTY REGISTRATION 19 SECTION PAGE [...]

  • Page 3

    INTRODUCTION THANK YOU!... for choosing the Manley Laboratories the "STINGRAY" INTEGRATED AMPLIFIER , You have possibly chosen this product because you auditioned it in a store or heard it at a hi-fi show and were impressed with the sound. It may have been the right combination of price, power, features and styling for you. It may have be[...]

  • Page 4

    MAINS CONNECTIONS Your STINGRAY 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 com- plies with your local supply. Export units for certain markets have a moulded mains plug fitted to comply with local require- ments. If your unit does [...]

  • Page 5

    OPERATIONAL NOTES SWITCHING ON The power switch is located on the back panel. You shouldn't need to turn the Stingray around or get yourself behind it. You should be able to "feel" the rocker switch located next to the AC power cord. Flip the switch away from the power cord to turn on the Stingray or towards the power cord to turn of[...]

  • Page 6

    CONNECTING YOUR STINGRAY Setting up this integrated amplifier is rather easy. Please refer to page 8 for a diagram of the back of the Stingray. 1. You will be connecting power last and turning the system on after all other connec- tions are made to prevent ugly noises as wires are connected and to prevent possible damage to the amps and speakers. I[...]

  • Page 7

    7 6. Before proceeding to the next step (power!) check that the On/Off switch is Off and the volume is turned all the way down (anti-clockwise). Now connect the IEC power cable to the back of the Stingray and then the other end to your mains wall socket. 7. Turn on the On/Off switch and let the Stingray "warm-up" for a few minutes. You sh[...]

  • Page 8

    Troubleshooting : It is rare that any of these problems occur but if they do here is some things to try. HUM - Try a mains ground adapter if they are legal in your country. They are also called 3 pin to 2 pin adapters or "cheaters" and are available in hardware stores. There should be one ground in your system and only one. If two or more[...]

  • Page 9

    A C B FRONT PANEL 9 1 0 LAMP A - BALANCE - This is a special Nobles balance control. Unlike most balance controls, this one has no loss at center (detented) and can be considered to be a straight wire if it is in the 12:00 position. It only reduces the volume of one channel at a time . B - VOLUME - This is also a high quality Nobles conductive plas[...]

  • Page 10

    TOP VIEW TUBE LOCATIONS - See the diagram above for the proper tube locations. Power should be unplugged and the tubes cool before handling them. We label the tube sockets, test points and trimmers to help. It is possible to put tubes in wrong if you bend the pins - not good. On this diagram we added dashed lines to further clarify which test point[...]

  • Page 11

    SIDE PANELS Any of the input jacks can be used with any hi-fi RCA outputs and they are electrically identical and only differ in how we labeled them. CD - Plug in your audio outputs from your CD player or "D to A Converter" here. Kind of obvious. A good spot for the main L & R signals from a DVD deck. Do not patch lines marked "d[...]

  • Page 12

    Optimising Your Sound System This section is full of little hints that may help you get the most out of your stereo - and it may not cost anything or cost very little. Probably, you know most of this, but hopefully some of it may be new or refresh your memory or just be refreshing reading in a manual. A very important factor is your speakers. Hopef[...]

  • Page 13

    You may have bought a great system but there is a good chance that you are only getting a fraction of it's potential. Very frequently we have experienced top quality electronics sounding unimpressive simply because acoustics were ignored. Even amongst studio engineers, few can really tell the difference between good speakers in a bad room and [...]

  • Page 14

    Replacing the Tubes & Setting The Bias Setting bias is one of lifes little neccessities when you own tube amps. The other is replacing tubes. Considering how these are related we will treat both as one subject. How long will these tubes last? We can't say for sure. Some die prematurely and some tubes last more than 30 years. The average fo[...]

  • Page 15

    What should I know about BIAS? Bias is a simple DC (negative) voltage that sets, what is called, the "operating point" of the tube. For our purposes it "fine tunes" the current going through the tube. We want each of the 4 tubes per channel to be equally sharing the load. This gives the amplifier's lowest distortion and the[...]

  • Page 16

    CREDITS An EveAnna Manley Production Featuring concept, layout and industrial design by EveAnna Manley, Starring: Paul Fargo for Input Innovations Hutch for Output Outovations Inspired by : David Manley Mastered by: Baltazar Hernandez Titled by: J. Gordon Holt Contributing Players: Michael Hunter transformer specialist Marcelino Tornez assembly sup[...]

  • Page 17

    SPECIFICATIONS Vacuum Tubes: 8 x EL84, 2 x 6414 2 x 12AT7WA Lamp type 1/4 X 1 1/4, 12 volt, .15 amp Fuse type 120VAC operation: MDL 3 AMP / 250 Volt SLO-BLO 240VAC operation: MDL 2 AMP/ 250 Volt SLO-BLO B+ FUSES (2): MDL 1/4 AMP/250 Volt SLO-BLO Gain 37 dB max 185mv input=50w output Signal to noise Typically 87 dB A WGT 20-20K (69 dB unweighted) Fr[...]

  • Page 18

    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[...]

  • Page 19

    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 this form in to: 909-628-2482 Registration entitles you to product support, full warranty benefits, and notice of product enhancements and upgrades. [...]