Mackie 1640 User Manual download pdf (Page 29)

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Owner’s Manual

Owner’s Manual

Appendix C: Technical Info

Onyx 1640 Speciﬁ cations

Frequency Response

Mic Input to Main Output (Gain @ Unity)

+0, –1 dB, 20 Hz to 50 kHz

+0, –3 dB, <10 Hz to >100 kHz

Distortion (THD & IMD)

Mic Input to Main Output (@ +4 dBu)

THD: < 0.01%, 20 Hz to 20 kHz

SMPTE IMD: < 0.005% (7 kHz/60 Hz, 4:1)

Dynamic Range

>110 dB (Mic In to Main Out)

Noise Floor

Signal-to-Noise Ratio:

–93 dBu (ref. +4 dBu, Mic In to Main Out, Channel

and Main Mix levels at unity)

Equivalent Input Noise (E.I.N.), 20 Hz to 20 kHz Bandwidth,

150Ω source impedance

–129.5 dBu @ +60 dB gain

Mic Output Noise:

Recording Output: –100 dBu (minimum gain)

Residual Output Noise:

Main Out: –102 dBu (Channel and Main Mix levels off)

Main Out: –88 dBu (Channel and Main Mix levels at

unity)

Common Mode Rejection Ratio (CMRR)

Mic In: >60 dB @ 1 kHz, Gain @ maximum

Crosstalk

Adjacent Inputs: < –95 dB @ 1 kHz

Input to Output: < –75 dB @ 1 kHz

Input Gain Control Range

Mic In: 0 dB to +60 dB

Line In: –20 dB to + 40 dB, mono channels

Phantom Power

+48 VDC

Equalization

Mono Channel EQ:

High: ±15 dB @ 12 kHz

High Mid:

±15 dB, sweepable from 400 Hz to 8 kHz

Low Mid:

±15 dB, sweepable from 100 Hz to 2 kHz

Low: ±15 dB @ 80 Hz

Mixer Rated Output

Main: +4 dBu

Aux Send: +4 dBu

Control Room: +4 dBu

Sub: +4 dBu

Maximum Rated Output:

+21 dBu @ Main XLR and TRS outputs

Maximum Input Levels

Mic Input: +21 dBu, Gain @ unity

Inst Input: +21 dBu, Gain @ –20 dB

Line Input: +30 dBu, Gain @ –20 dB

Tape Input: +21 dBu

Aux Return: +21 dBu

Maximum Voltage Gain

Mic Input to:

Main Output: 80 dB

Tape Output: 80 dB

Sub Output: 80 dB

Aux Sends: 86 dB

Control Rm Output:

90 dB

Phones Output: 90 dB

Inst Input to:

Main Output: 60 dB

Tape Output: 60 dB

Sub Output: 60 dB

Aux Sends: 66 dB

Control Rm Output:

70 dB

Phones Output: 70 dB

Tape Input to:

Main Output: 20 dB

Tape Output: 20 dB

Control Rm Output:

20 dB

Phones Output: 20 dB

Aux Return to:

Main Output: 20 dB

Tape Output: 20 dB

Sub Output: 20 dB

Aux Send: 22 dB

Control Rm Output:

30 dB

Phones Output: 30 dB

Input Impedance

Mic Input: 2.4 kΩ, balanced

Inst Input: 1 MΩ

Mono Channel Line Input: 30 kΩ balanced;

15 kΩ unbalanced

Stereo Aux Returns: 20 kΩ balanced;

10 kΩ unbalanced

Tape In: 20 kΩ, unbalanced

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