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OWNER'S MANUAL
MANLEY
16 x 2
TUBE MIXER
MANLEY
LABORATORIES, INC.
MANLEY LABORATORIES, INC.
13880 MAGNOLIA AVE.
CHINO, CA. 91710
TEL: (909) 627-4256
FAX: (909) 628-2482
http://www.manleylabs.com
email: emanley @ manleylabs.com
email: service @ manleylabs.com
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CONTENTS SECTION PAGE INTRODUCTION 3 BACK PANEL & CONNECTING 4,5,6,7 FRONT PANEL 8,9 TECHNICAL DETAILS 10 TUBE BOARDS 11 OPTIONS 12 SPECIFICATIONS 13 ADJUSTMENTS 14 TROUBLESHOOTING 15,16 MAINS CONNECTIONS 17 WARRANTY 18 WARRANTY REGISTRATION 19 TEMPLATES FOR STORING SETTINGS 20,21,22
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INTRODUCTION THANK YOU!... for choosing the Manley 16 x 2 TUBE MIXER. While there are plenty of choices in low budget mixers and consoles in the $30K to $200K with a myriad of features, buttons, EQs, etc. there is very little available that simply feature sonic quality and a minimum of knobs. This mixer is mainly intended for those who use and love workstations and plug-ins but find the aspect of mixing digitally to be frustrating their efforts to achieve the finished result they crave. Others,
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THE BACK PANELS 2 1 3 4 1) MAINS ON / OFF SWITCH. "0" indicates OFF, "1" indicates ON. This should be set to OFF or O before plugging in any cables. 2) VOLTAGE LABEL (ON SERIAL STICKER). Just check that it indicates the same voltage as is normal in your country. It should be. If it says 120V and your country is 220V, then you should look insi
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5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5) MIX BALANCED OUTPUT. Left and Right MIX outputs intended to feed a 2 track tape machine, DAT or A to D converter. These are transformer balanced Pin 2 hot. This is the mix of all 16 channels plus EXT inputs. The MIX control is the final level control for these outputs. All outputs MUT
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9) PHANTOM POWER. This switch is for the 48 volts needed for most solid state condensor mics. It is not generally needed for tube mics, dynamic mics, ribbon mics and in some cases may be harmful to some old vintage ribbon mics. Each switch is for a bank of 4 channels (1-4, 5-8, 9-12, 13- 16) and is a LOCKING TOGGLE which needs to be pulled to switch. This is a safety feature to prevent huge pops from hurting speakers and sensitive ears. Mic signals are usually 1/100th of a volt and phantom is 4
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13) TAPE PLAYBACK INPUTS. Used for returning a 2 track tape machine or DAT back to the mixer for monitoring, checking or just listening. Once one records a mix, it is always a good idea to check playback. The 5 position monitor select switch on the front hast to be in the "TAPE" position to hear the playback. These are balanced inputs, TIP hot. 14) EXT INPUTS. Used for chaining mixers for 32 channels if you have 2 mixers and the 1/4" MIX outputs are fed from the other mixer into these jacks. On
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THE FRONT PANEL 1 2 3 4 5 6 7
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8) AUX. Only on LINE VERSION channels. A separate mono mix that can be used as an effects send or headphone send. These are factory wired to be post fader and post cut but there are internal jumpers right next to the aux pot that allow pre fade aux or even post fade, pre cut. Like the MIX GAIN pots unity gain is approximately 2:00 9) AUX MASTER, EXT GAIN. On LINE VERSIONS this control is the final level control for the AUX send. On MIC VERSIONS it is a stereo gain control for the EXT INPUTS into
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TECHNICAL DETAILS CHANNELS: The Combi (XLR / 1/4") jack is wired to provide a 2400 ohm load for XLR sources like mics, and 82K ohms for 1/4" plugs either balanced or unbalanced. On MIC VERSIONS Phantom power can be injected with the back panel switches and uses a pair of traditional 6K8 resistors. Also on MIC VERSIONS, the signal is optionally phase reversed with a relay. On all versions, the next stage is a very low noise instrumentation amp / DC servo. For those into numbers, noise is rated at
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THE TUBE BOARDS The left tube board takes the mix busses through the 1K MIX GAIN pots, then a 7:1 step-up transformer. The left signal is amplified by a 25db tube voltage amp/line driver and the right signal is sent to the right tube board. The voltage amp is a paralleled (for low noise) 12AT7wa direct coupled into a White Follower line driver which uses a 6044. It is AC coupled with a 30 uF audiophile grade Multi-cap into the 1/4" Unbalanced Mix Output and a Manley 9811 transformer for the Bala
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OPTIONS The LINE VERSION can be considered the basic root version and additional daughter boards and parts are added for the MIC and special versions or mods. MIC VERSION: 1) Adds a front panel daughter board that contains an 11 position gold contact rotary switch from Grayhill and a series or resistors to set the gain of the input stage instrumentation amplifier.Also contains 2 micro toggles and LEDs that controls relays on the channel boards. The AUX pot cannot be fitted if thedaughter board a
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Specifications Channel Input to Channel Output Frequency Response Unity Gain 10 Hz to 200 kHz -1 db Frequency Response +40 dB Gain (Mic) 5 Hz to 100 kHz -1 db THD + N Unity Gain (+4 dBu) .002% (-90 dB) THD + N Unity Gain (+28 dBu) .005% (-85 dB) THD + N +40 dB Gain .001% DIM Distortion Unity Gain (+4 dBu) -85 dB Maximum Input/Output Unity Gain +28 dBu Balanced Maximum Gain Mic = +60 dB Mix Gain +10 dB (Mic = 70 dB) Channel Input to Mix Output (Line +4dBu) Frequency Response Unity Gain 5
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ADJUSTMENTS MIX GAINS: There is a single trimmer on each tube board to set the summing amp gain. It adjusts the amount of negative feedback from a special tertiary winding on the output transformer back to the first tube stage cathodes. These trims are located near the top of each tube board, between the tubes. Adjustment can be done just by sliding back the top perforated cover once the two 4-40 screws that hold the cover are removed (from the back panel). 1) Using the EXT inputs, feed a +4 dBv
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TROUBLE-SHOOTING There are a number of possible symptoms of something not quite right, some may be interfacing, others we will touch on as well. If you suspect a problem the following paragraphs should help. NO POWER, NO INDICATORS, NADA - Probably something to do with AC power. Is it plugged in? Check the fuseon the back panel. A blown fuse often looks blackened inside or the little wire inside looks broken or it's resistance measures higher than 2 ohms. A very blackened fuse is a big hint that
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IT MAKES NOISES WHEN THE FRONT PANEL IS TAPPED - An easy one. Some tubes become microphonic over time. That means they start acting like a bad microphone. Vibration has caused the supports for the little parts in the tube to loosen and now the tube is sensitive to vibration. Easy - Replace the tube. Which one? The one that makes the most noise when you tap it. Usually this will be one of the smaller (gain stage) tubes closest to the front. The Mixer will have to be on, connected and speakers up
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MAINS CONNECTIONS Your 16 x 2 MIxer 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 re- quirements. 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. GREEN/YELL
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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. Proper registration is made by filling out and returning to the factory the warranty card attached to this general warranty statement, al
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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 FAX 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. MODEL ____________________ SERIAL No. ______________________ PU
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