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M-14:2

PROFESSIONAL STEREO MIXER

3. MASTER SECTION

1. MAIN MIX OUTPUTS

These are balanced XLR type output jacks with a
nominal output/impedance of +4dB/600

Ω

.

These connectors transmit the MIX L/R outputs to the
power amplifiers. which drives the main speakers.

2. MAIN INSERT L/R JACKS

The insert jack sends one signal to the processing
device and inserts the returned signal back into the
Left and Right main mix signal paths.
The nominal input level and impedance is
0dB/600

Ω

and the nominal output level and

impedance is 0dB/10k

Ω

3. CONTROL ROOM OUT JACKS

These are unbalanced 1/4" phone jack with a
nomina output and impedance of +4dB/600

Ω

.

This is where you connect your control room
monitor amplifier inputs.

4. AUX SEND 1 ~ 2 CONTROL

These controls adjusts the level of the aux send 1~ 2
output.

5. AUX RETURN 1~ 2 CONTROL

This control adjusts the input levels from the effect
units etc. Connected to the L/MONO, R jacks of
AUX RETURN 1~ 2 are sent to the MIX L/R buses.
If a plug is inserted into only the L/MONO jack,
the same signal will be sent to L/R BALANCE
control.

6. TAPE IN CONTROL

This control adjusts the level of the playback signal
that is inserted to the master mixing bus from the
TAPE IN jacks on the top panel.

7. CTRL ROOM CONTROL

This is a stereo level control for the studio monitor.
This circuit monitors the left/right SOLO buses.

PROFESSIONAL STEREO MIXER

M-14:2

ELECTRONICS

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Содержание M-14:2

Страница 1: ...M 14 2 Professional Stereo Mixer PROFESSIONAL STEREO MIXER M 14 2 ELECTRONICS ELECTRONICS OC03 ...

Страница 2: ...Stereo Input Section 8 Master Section 10 Rear Panel Input Output Section Connectors A 13 Input Output Section Connectors B 14 Point to Remember 15 Connections 16 Grounding on the Road 17 Applications 19 Block Diagram 20 Specifications General Specifications 21 Input Output Specifications 22 Service Procedures 23 Schematic 23 Parts List 23 Variations and Options 23 Warranty 23 ...

Страница 3: ... shall be placed on the apparatus Worded WARNING FOR YOUR PROTECTION PLEASE READ THE FOLLOWING WATER AND MOISTURE Unit should not be used near water e g near a bathtub washbowl kitchen sink laundry tub in a wet basement or near a swimming pool etc Care should be taken so than objects do not fall and liquids are not spilled into the enclosure through openings This symbol is intended to alert the us...

Страница 4: ...et and are required if it ever becomes necessary to return your set for service Never place the unit near radiators in front of heating vents to direct sun light in excessive humid or dusty location to avoid early damage and for your years of quality entertainment Connect your complementary components as illustrated in the following page Short Form Instructions Thank you for purchasing a M 14 2 Mi...

Страница 5: ...hen moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the a...

Страница 6: ...enient use of external equipment AUX SEND and AUX RETURN function are provided CHANNEL EQUALIZER The 3 band equalizer are designed for 15dB control on mono input channel The 2 band equalizer are designed for 15dB control on stereo input channel SOLO FUNCTION OF ALL CHs The SOLO function allows you to monitor through headphone outputs and control room outputs any input channel after the channel fad...

Страница 7: ... supplied to pins 2 and 3 of these connectors It is important that during operation or testing of the mixer all channel faders remain fully down whenever the mic input is not properly terminated with a microphone or equivalent 150 ohm source An open mic invites the introduction of high noise levels which could produce lower quality sound or an incorrect test measurement 1 2 3 4 5 6 7 8 9 10 11 2 1...

Страница 8: ...the level of the Post EQ pre fader signal If the PEAK indicator lights more than briefly on high level transients you should use the GAIN control to decrease the input sensitivity of the channel If this dose not work reduce the output level of the connected source 5 3BAND EQUALIZER CONTROLS This is a 3 band equalizer with center frequencies range and type as shown below The frequency response is f...

Страница 9: ...y Intermediate settings will cause the sound to appear at corresponding locations in the stereo sound field 9 MUTE ALT 3 4 SWITCH When the Mute ALT 3 4 switch is depressed a channel output will be routed to the ALT 3 4 output instead of the main mix ALT 3 4 bus offers you a second independent stereo submix with its own submaster stereo fader 10 SOLO SWITCH When these switch is depressed the channe...

Страница 10: ... indicators let you check the level of the signal input to the channel The peak indicator lights when the input signal reaches 3dB below the channels clipping point This indicator show the level of the post EQ pre fader signal If the PEAK indicator lights more than briefly on high level transients you should use the GAIN control to decrease the input sensitivity of the channel If this dose not wor...

Страница 11: ...4 SWITCH When the Mute ALT 3 4 switch is depressed a channel output will be routed to the ALT 3 4 output instead of the main mix ALT 3 4 bus offers you a second independent stereo submix with its own submaster stereo fader 9 SOLO SWITCH When these switch are engaged the channel input signal can be routed to the solo bus This switch allows you to monitor the post fader channel input signal through ...

Страница 12: ... with a nomina output and impedance of 4dB 600Ω This is where you connect your control room monitor amplifier inputs 4 AUX SEND 1 2 CONTROL These controls adjusts the level of the aux send 1 2 output 5 AUX RETURN 1 2 CONTROL This control adjusts the input levels from the effect units etc Connected to the L MONO R jacks of AUX RETURN 1 2 are sent to the MIX L R buses If a plug is inserted into only...

Страница 13: ...indicator lights when the power switch is turned on 10 PHANTOM POWER INDICATOR This indicator lights when the phantom power switch is turned on 11 OUTPUT LEVEL METER A vertical row of ten LED show the continuous output level of main Output L R or monitor 1 2 by signal select switch This type of display is free from over shoot problem of mechanical meters and is highly visible under poor lighting c...

Страница 14: ...WITCH When this switch is on the signal of each ALT 3 4 will be sent to the MIX L R buses 16 ALT 3 4 OUTPUT FADER This fader adjusts the final level of the combined stereo signal and send the ALT 3 4 output jacks 17 MAIN MIX L R MASTER FADERS These faders adjust the final level of the combined signals from all channels ...

Страница 15: ...d impedance is 0dB 10kΩ These jacks allow you to own graphic equalizers compressors noise filters or other devices 2 TAPE IN JACKS Used to connect a stereo output device such as external cassette recorder or CD player The signals which are input here are sent to the ST bus 3 REC OUT JACKS The REC OUT jacks send the unequalized pre fader signal from the master bus for recording by the tape deck Tip...

Страница 16: ... a nominal level and impedance of 4dB 10kΩ These jacks are usually used to receive the audio returned from an effect unit such as reverb or delay but they can also be used as supplementary inputs If a plug is inserted only in L MONO the same signal will be sent to both the L and R buses These allow you to return signal from outboard devices either in stereo pairs or mono phonically many popular ef...

Страница 17: ...pment to avoid earth loops It is important to remember that all equipment which is connected to the mains it a potential source of hum and interference and may radiate both electrostatic or electromagnetic radiation In addition the mains will also act as a carrier for many forms of RF interference generated by electric motors air conditioning units thyristor light dimmers etc Unless the earth syst...

Страница 18: ...alanced 1 4 TRS connectors are wired as described Tip is Positive Ring is Negative Sleeve is Shield Insert Points Amp Line Input Headphones Unbalanced Input Output AUX Send Ring Ring Tip Tip Sleeve Sleeve Send Return Screen Hot positive Cold negative Screen Left Signal Right Signal Ground Signal Ground 3 Pole Stereo Jack 2 Pole Mono Jack Ring Tip Sleeve Tip Seeve 2 1 3 Balanced Input Hot positive ...

Страница 19: ...the AC ground wire and are able to enter the audio system This problem is usually most noticeable with sensitive equipment such as the mixer Lifting the AC ground at the mixer can often solve this problem However lifting the AC ground on the mixer also lifts the AC ground on the microphone chassis causing a safety hazard Try connecting the mixer and any other sensitive equipment to other AC circui...

Страница 20: ...k LOW Shield GND T S T T S S 2 3 1 XLR Standard Phone D STANDARD PHONE E SHIELD GND PHONE White Red HIGH Black LOW Shield GND White Black HIGH Shield GND T S 2 3 1 XLR C STANDARD PHONE White Red HIGH Black LOW Shield GND Floating or Balanced low impedance most professional equipment line in and line out microphones REMOTE DEVICE REMOTE SIDE OF CABLE DESCRIPTION CABLE Connector Type Unbalanced low ...

Страница 21: ...19 M 14 2 PROFESSIONAL STEREO MIXER Applications Applications PROFESSIONAL STEREO MIXER M 14 2 ELECTRONICS ...

Страница 22: ...20 M 14 2 PROFESSIONAL STEREO MIXER Block Diagram Block Diagram ...

Страница 23: ...fader at nominal level and all channel fader Minimum 84dB MIC IN TO MIX L R 84dB MIC IN TO ALT3 4 76dB MIC IN TO AUX 1 PRE 86dB MIC IN TO AUX 2 REV 90dB MIC IN TO CONTROL ROOM L R 62 2dB MIC IN TO REC L R 54dB LINE IN TO MIX L R 54dB LINE IN TO ALT3 4 46dB LINE IN TO AUX 1 PRE 56dB LINE IN TO AUX 2 REV 60dB LINE IN TO CONTROL ROOM L R 44dB ST IN TO MIX L R 44dB ST IN TO ALT3 4 16dB AUX RETURN IN T...

Страница 24: ...0Ω 10kΩ 0dB Phone Jack TRS T Out R In S GND Main Stereo Insert Input 10kΩ 600Ω 0dB Phone Jack TRS T Out R In S GND Rec Out 600Ω 10kΩ 10dBV RCA pin Jack Phones Out 100Ω 40Ω 3mW Stereo Phone Jack Input Connector Input Impedance Nominal Impedance Rated Input Level Connector Type CH Mic 4kΩ 50 600Ω 60dB XLR 3 31 Type Balanced CH Line 10kΩ 600Ω 30dB Phone Jack TRS T Hot R Cold S GND Stereo Input 5kΩ 60...

Страница 25: ...contacting your warranty provider Variations and Options Variations and Options Variations Products supplied through legitimate sources are compatible with local AC power requirements Options No optional items are available for this product Warranty Warranty Warranty terms and conditions vary by country and may not be the same for all products Terms and conditions of warranty for a given product m...

Страница 26: ...NOTE ...

Страница 27: ... but rather a global company that is truly international in scope with factories and offices in Korea and China and sales and marketing operations located in Japan Europe and the U S A With more than 850 employees around the globe Inter M is well poised for further growth and expansion INTER M AMERICAS INC 1 EAST BEACON LIGHT LANE CHESTER PA USA 19013 4409 TEL 610 874 8870 FAX 610 874 8890 Home Pa...

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