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.
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
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.
THE BACK PANELS 2 1 0 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 inside the power supply and behind the Mains Switch is a "change-over switch" which has the numbers 110 and 220.
13 6 14 7 15 8 16 9 17 10 11 18 12 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 MUTE during power up/down or if the MIX MUTE button is selected. 6) MIX UNBALANCED OUTPUT.
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, 1316) 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.
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.
1 2 3 4 5 6 THE FRONT PANEL 7 PAN L INS L R 35 30 25 40 45 INS 35 30 25 40 45 20 50 20 50 15 0 55 60 15 0 55 60 180 5 4 6 3 2 1 8 3 9 2 1 6 MIC 8 MIX 2 35 40 45 INS L R 35 30 25 40 45 INS L R 35 30 25 40 45 INS L R 35 30 25 40 45 20 50 20 50 20 50 20 50 15 0 55 60 15 0 55 60 15 0 55 60 15 0 55 60 5 4 6 2 8 3 9 2 6 1 10 MUTE SOLO 5 4 180 7 3 1 MUTE L R 30 25 10 SOLO MUTE INS 180 7 9 1 10 SOLO 5 4 180 7
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.
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.
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.
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.
Specifications Channel Input to Channel Output Frequency Response Unity Gain Frequency Response +40 dB Gain (Mic) THD + N Unity Gain (+4 dBu) THD + N Unity Gain (+28 dBu) THD + N +40 dB Gain DIM Distortion Unity Gain (+4 dBu) Maximum Input/Output Unity Gain Maximum Gain Mic = +60 dB Mix Gain 10 Hz to 200 kHz -1 db 5 Hz to 100 kHz -1 db .002% (-90 dB) .005% (-85 dB) .
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 (1.
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.
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.
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 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.
WARRANTY All Manley Laboratories defects in materials and purchase to the original warranty is available to ownership within 30 days equipment is covered by a limited warranty against workmanship for a period of 90 days from date of purchaser only. A further optional limited 5 year the original purchaser upon proper registration of of date of first purchase.
WARRANTY REGISTRATION We ask that you please fill out this registration form and send the bottom half to: Or FAX to MANLEY LABORATORIES REGISTRATION DEPARTMENT 13880 MAGNOLIA AVE. CHINO CA, 91710 (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.
180 INS 5 6 SOLO 1 9 MUTE 10 7 9 10 2 6 8 4 5 3 1 7 9 6 8 4 R MUTE 2 5 1 3 L SOLO 10 9 2 1 8 7 3 4 180 5 2 7 SOLO MUTE 10 10 9 8 9 10 6 7 2 1 5 6 8 1 4 R MUTE 3 4 2 3 L SOLO 10 9 7 55 60 2 6 40 45 50 8 1 5 35 R 3 4 15 0 55 60 15 0 30 25 20 40 45 INS L 50 35 R 20 30 25 L MIX AUX PAN MIX 180 MIC INS PAN 1 4 7 9 8 SOLO MUTE 10 10 7 9 8 9 11 6 6 R MUTE 10 7 55 60 2 1 5 5 3 6 40 45 50
1 SOLO 1 9 MUTE 10 7 9 10 2 6 8 4 5 3 1 7 9 6 2 5 8 4 R MUTE 3 L SOLO 10 7 9 1 6 2 5 8 4 10 7 3 1 6 8 5 9 4 2 R 3 L 5 2 8 7 9 7 SOLO MUTE 10 10 9 8 9 10 6 7 2 1 5 6 8 1 4 R MUTE 3 4 2 3 L SOLO 10 10 7 9 6 6 2 1 5 5 8 1 4 R 3 4 2 3 L MIX AUX PAN MIX AUX PAN 1 4 1 4 7 6 SOLO MUTE 10 7 9 8 9 8 9 10 7 R MUTE 6 11 8 9 10 10 7 2 1 5 5 3 6 6 8 1 4 5 5 R 3 4 2 3 L SOLO 2
180 INS 180 INS 5 5 SOLO MUTE 10 9 1 2 7 8 4 3 9 6 180 5 2 SOLO MUTE 9 10 7 55 60 2 10 6 40 45 50 8 1 35 R MUTE 10 3 4 15 0 55 60 15 0 30 25 20 40 45 INS L SOLO 1 9 7 2 6 55 60 50 40 45 8 4 5 35 R 3 50 35 R MUTE 10 180 20 30 25 L SOLO 1 9 2 7 8 4 3 1 6 15 0 55 60 30 25 15 0 INS 20 40 45 L 50 35 R 20 30 25 L MIX 180 MIC INS PAN MIX 180 MIC INS PAN 1 4 1 4 SOLO 2 3 15 0 20 30 25 L SOLO 2 3 15