Mackie Onyx 1640i Onyx 1640i SPECIFICATIONS, Meters, FireWire, Equalization, Frequency Response, Distortion (THD+N), Maximum Input Levels, Noise Characteristics

Onyx 1640i SPECIFICATIONS

Noise Characteristics

Equivalent Input Noise (EIN), mic input at insert, 150	source
impedance, 20 Hz to 20 kHz
60 dB (max) gain:	–129 dBu
40 dB gain:	–128 dBu

Output Noise Figure (1/4” Main out, all channels assigned to main, Gain knobs at unity, 20 Hz to 20 kHz)

Main Mix knob down, channel Level knobs down:

–100 dBu (–104 dB SNR, ref +4 dBu)

Main Mix knob unity, channel Level knobs down:

–93 dBu (–97 dB SNR, ref +4 dBu)

Main Mix knob unity, channel Level knobs unity:

–91 dBu (–95 dB SNR, ref +4 dBu)

FireWire Through (Record + Playback) Dynamic Range:

0 dBu mic input, to DAW, routed back to mixer direct to Control Room, all gain stages unity, 20 Hz to 20 kHz

All sample rates –105 dB

Frequency Response

Mic input to main output (all gain stages at unity)

+0, –1 dB, <10 Hz to 80 kHz +0, –3 dB, <10 Hz to >100 kHz

Channel line input to any output (all gain stages at unity)

+0/–1 dB, 20 Hz to 20 kHz

FireWire in and out (mic input to FireWire send, returned to Control Room, all gain stages at unity)

44.1 kHz sample rate	+/–0.5 dB,
	20 Hz to 20 kHz
	–3 dB at 21 kHz
96 kHz sample rate	+/–0.5 dB,
	20 Hz to 20 kHz
	–3 dB at 45 kHz

Onyx 1640i PREMIUM MIXER WITH FIREWIRE

Attenuation and Crosstalk @1 kHz

Main Mix knob down	–80 dBu
Channel Alt/Mute switch engaged	–96 dBu
Channel Level knob down	–96 dBu

Common Mode Rejection Ratio (CMRR)

Mic input to insert, max gain, 1 kHz<70 dB

Maximum Input Levels

Mic input, gain at unity (0 dB)	+21 dBu
Mic input, gain at max (60 dB)	–38 dBu
Line input, gain at –20 dB	+30 dBu
Instrument input, gain at –20 dB	+21 dBu
Tape input	+21 dBu
Aux return	+21 dBu

Maximum Output Levels

All outputs+21 dBu

Equalization

Low	±15 dB @ 80 Hz
Lo-Mid frequency	100 Hz to 2 kHz
Lo-Mid gain	±15 dB
Hi-Mid frequency	400 Hz to 8 kHz
Hi-Mid gain	±15 dB
High	±15 dB @ 12 kHz

Distortion (THD+N)

20 Hz to 20 kHz, 20 Hz to 80 kHz bandwidth

Mic input at insert
(+4 dBu in, 0 dB gain, +4 dBu out)	0.005%
Mic input at insert
(–10 dBu in, +20 dB gain, 20 Hz to 20 kHz bandwidth)	0.0007%
Stereo channel line input to any output
(+4 dBu in, all gain stages at unity, +4 dBu out)	0.005%

FireWire in and out (+4 dBu in, mic input to FireWire send, returned to Control Room, all gain stages at unity)

44.1 kHz sample rate	0.02%, 10 Hz to 20 kHz
96 kHz sample rate	0.02%, 10 Hz to 10 kHz
	0.05%, 10 kHz to 47 kHz

FireWire

Sample Rates Available	44.1 kHz, 48 kHz,
	88.2 kHz, 96 kHz
Buffer Size	32 (44.1 kHz and 48 kHz only),64,
	128, 256, 512, 1024, 2048 samples
Resolution	24-bit

Meters

4-segment pre-fader channel meters	OL (+18 dBu),
	+10, 0, –20 dBu
12-segment pre-fader	OL (+20 dBu), +15, +10,
Control Room meters	+6, +3, 0, –2, –4, –7, –10,
	–20, –30 (0 dB = 0 dBu)

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