Allenheath ML4000 USER GUIDE User Manual download pdf (Page 12)

12 ML4000 User Guide

Technical Specifications

0dBu = 0.775 Vrms, +4dBu = 1.23 Vrms

Operating Levels

Channels......................................... 0dBu Headroom +21dB

Mix .................................................. -2dBu Headroom +23dB

Max XLR output .............................. +23dBu

Frequency Response Referred to 1kHz at +4dBu

Mic to main output (+40dB)............. 20Hz to 30kHz +0/-0.5dB

Line to main output (0dB)................ 20Hz to 30kHz +0/-0.5dB

Distortion @1kHz +14dBu

THD+noise ...................................... < 0.02%

CMRR Common mode rejection @1kHz

Mic (+40dB)..................................... > 80dB

Mic + Pad (0dB) .............................. > 50dB

Crosstalk Referred to driven channel @1kHz

Channel to channel ......................... < -95dB

Mute shutoff .................................... < -90dB

Fader shutoff................................... < -90dB

Noise Performance Measured rms 22Hz to 22kHz unweighted

Mic EIN with 150 ohm source ......... -128dB

Residual output noise ..................... < -98dBu

Mix noise, nothing routed................ < -94dBu

Mix noise, 24 channels routed ........ < -84dBu

Metering

Reading 0................. 0dBu at XLR outputs

LED meters .............. Peak reading, 3 colours

VU meters ................ Ave reading, Illuminated moving coil

Peak indicators ........ 5dB before clip, multi-point sensing

Input meters ............. 5 bar LED (signal, -6, 0, +6, peak)

Group mix meters .... 5 bar LED (signal, -6, 0, +6, peak)

Group/Mtx meters .... VU

L,R,C meters............ VU and 16 bar LED

Lamp Connectors x3

Connector ....................................... XLR-F 4pin

Rating.............................................. 12V 400mA max

Channel Filters

Slope ............................................... 12dB/oct high pass

Frequency ....................................... 20Hz to 400Hz

Mono Equaliser

HF................. +/-15dB, 2kHz to 20kHz shelf

HM................ +/-15dB, 500Hz to 15kHz bell, Q = 1 or 2

LM ................ +/-15dB, 35Hz to 1kHz bell, Q = 1 or 2

LF ................. +/-15dB, 20Hz to 200Hz shelf

Stereo Equaliser

HF................. +/-15dB, 12kHz shelf

HM................ +/-15dB, 2.5kHz bell

LM ................ +/-15dB, 250Hz bell

LF ................. +/-15dB, 60Hz shelf

Power Supply Model MPS14

Type ........................... External 2U rack or floor mount

Mains input................. 100-230V 50/60Hz universal input

Power consumption.... 500W

Full protection and fan cooling

Built-in combiner for redundant supply

Dimensions Width.............. Depth ...... .....Height

24 Channel 1196 (47”) ...... 781 (30.7”) ....282 (11.1”)

32 Channel 1451 (57”) ...... 781.......... .....282

40 Channel 1706 (67”) ...... 781.......... .....282

48 Channel 1961 (77”) ...... 781.......... .....282

Sidecar 831 (33”) ........ 781.......... .....282

MPS14 psu 483 (19”) ........ 260 (10.2”) ....

Weights 24 Channel..... 53 kg (116 lbs)

32 Channel..... 65 kg (143 lbs)

40 Channel..... 75 kg (165 lbs)

48 Channel..... 87 kg (191 lbs)

24 Sidecar...... 40 kg (88 lbs)

MPS14 psu .... 2.5 kg (5 lbs)

INPUTS:

Mic (Pad out)................ XLR.................balanced, pin2+........ 2k ohm ..............variable -60 to -10dBu ........ Max +11dBu

Mic (Pad in).................. ........................ ................................. >20k ohm..........variable -40 to +10dBu ....... Max +31dBu

Stereo A ...................... TRS jack .........balanced, tip+........... >20k ohm..........variable -18 to +6dBu ......... Max +27dBu

Stereo B ...................... XLR.................balanced, pin2+........ >20k ohm..........variable –18 to +6dBu ........ Max +27dBu

2-Track......................... TRS jack .........balanced, tip+ .......... >20k ohm..........+4dBu ................................. Max +25dBu

INSERTS:

Input send .................... TRS jack .........ground comp, tip+ .... <50 ohm............0dBu ................................... Max +21dBu

Input return................... TRS jack .........balanced, tip+........... >20k ohm ..........0dBu ................................... Max +21dBu

Output send ................. TRS jack.........ground comp, tip+ .... <50 ohm............-2dBu.................................. Max +21dBu

Output return................ TRS jack .........balanced, tip+........... >20k ohm..........-2dBu.................................. Max +21dBu

OUTPUTS:

L,R,C............................ XLR.................balanced, pin2+........ <75 ohm............0Bu ..................................... Max +23dBu

Grp/Aux 1-12................ XLR.................balanced, pin2+........ <75 ohm............0dBu ................................... Max +23dBu

Matrix 1-4 ..................... XLR.................balanced, pin2+........ <75 ohm............0dBu ................................... Max +23dBu

Direct out...................... TRS jack .........ground comp, tip+ .... <50 ohm............0dBu ................................... Max +21dBu

2-Track......................... TRS jack .........ground comp, tip+ .... <50 ohm............0dBu ................................... Max +21dBu

Local Monitor ............... TRS jack .........ground comp, tip+ .... <50 ohm............0dBu ................................... Max +21dBu

Headphones................. TRS jack .........tip left, ring right........ for stereo headphones >30 ohms

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Allenheath ML4000 USER GUIDE User Manual Page 12

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