Mixer Inputs; Mixer Outputs - Mackie 1642-VLZ Pro Specifications

Architect & Engineering Specifications
1. GENERAL CONFIGURATION. The mixer shall consist of
8 mono channels accommodating line and/or microphone
signals (Channels 1–8), two hybrid channels accomodating
stereo line and/or mono microphone signals (Channels 9/10
& 11/12) and two stereo channels accomodating stereo line
inputs (Channels 13/14 &15/16); and shall include 8 Send/
Return channel Inserts and 8 channel Direct Outputs, chan-
nels 1–8; 4 stereo pairs of Aux Return inputs; 2 stereo pairs
of Main Mix outputs; 1 Main Mix Mono output with level
control, 1 stereo pair of Control Room outputs; 4 Submaster
outs double-bussed to 8 outputs; 4 Aux Send outputs; 2
stereo pairs of RCA-type Tape inputs and outputs; and 2
stereo Headphones outputs. The mixer shall be capable
of placement on a table or installation in a standard
19-inch rack mount via RM1642-VLZ rack rail brackets (not
included); shall be fitted with 1 rocker-type Power switch; 1
3-pin power receptacle with user-replaceable 5x20mm fuse
drawer; 1 BNC socket, providing 12VDC for fitting an exter-
nal lamp (not included); and shall be entirely self-contained.

2. MIXER INPUTS.

CHANNELS 1–8: Each channel shall include an XDR™
(Extended Dynamic Range) electronically balanced micro-
phone input, using an XLR-3-F-type connector, accepting
nominal levels from –60dBu to +4dBu via a rotary Trim
control. 48V phantom power shall be globally controlled
via a rocker-type switch. Each channel shall also include a
balanced/unbalanced (bal/unbal) line input wired in paral-
lel, using 1/4" TRS phone jacks, accepting nominal levels
from –45dBu to +4dBu. Each channel shall include a pre-
fader Insert point, using 1/4" TRS phone jacks (tip=send,
ring=return, sleeve=ground), delivering and accepting nomi-
nal levels from –10dBV to +4dBu.
CHANNELS 9/10 & 11/12 (two channel strips): Each channel
strip shall include an XDR™ (Extended Dynamic Range) elec-
tronically balanced microphone input, using an XLR-3-F-type
connector, accepting nominal levels from –60dBu to +4dBu
via a rotary Trim control. Phantom power shall be globally-
controlled via a rocker-type switch. Each channel strip shall also
include a stereo pair of balanced/unbalanced (bal/unbal) line
inputs wired in parallel, using 1/4" TRS phone jacks, accepting
nominal levels from –45dBu to +4dBu.
CHANNELS 13/14 & 15/16 (two channel strips): Each
channel strip shall include a stereo pair of balanced/
unbalanced (bal/unbal) line inputs wired in parallel, using
1/4" TRS phone jacks, accepting nominal levels from
–45dBu to +4dBu.
OTHER INPUTS: The mixer shall include 8 bal/unbal Aux
Return inputs, forming four stereo pairs, using 1/4" TRS
phone jacks, accepting nominal levels from –10dBV to
+4dBu; and 1 stereo pair of Tape In jacks, using unbalanced
RCA-type phono jacks (labeled TAPE OUT), accepting nomi-
nal levels from –10dBV to +4dBu.

3. MIXER OUTPUTS.

MAIN OUTPUTS: The mixer's Main Mix stereo outputs
shall be fitted in three ways: Using balanced a stereo pair
of XLR-3-M-type connectors, delivering maximum output of
28dBu, including 1 recessed Main Output Level switch to
provide 30 dB of attenuation (XLR outputs only); using a
stereo pair of symmetrically balanced (also accepting unbal-
anced) 1/4" TRS phone jacks, delivering nominal levels
from –10dBV to +4dBu; and using a stereo pair of unbal-
anced RCA-type phono jacks, delivering nominal levels from
–10dBV to +4dBu; one stereo pair of 1/4" TRS pre-fader
insert points delivering and accepting levels from +4dBu
nominal to +22dBu max. The mixer's Main Mix Mono output
shall be fitted with one symmetrically balanced (also accept-
ing unbalanced) 1/4" TRS phone jack, delivering nominal
levels from –10dBV to +4dBu.
OTHER OUTPUTS: Input channels 1–8 shall each include
a post-fader Direct Output, using bal/unbal 1/4" TRS phone
jacks, delivering nominal levels from –10dBV to +4dBu. The
mixer shall include 4 Submaster outs double-bused to 8
outputs, using bal/unbal 1/4" TRS phone jacks, delivering
nominal levels from –10dBV to +4dBu; 1 stereo pair of Con-
trol Room outputs, using bal/unbal 1/4" TRS phone jacks,
delivering nominal levels from –10dBV to +4dBu; 4 Aux
Send outputs using bal/unbal 1/4" TRS phone jacks, deliv-
ering nominal levels from –10dBV to +4dBu; and 2 stereo
Headphones outputs, using an unbalanced 1/4" TRS phone
jack (tip=left, ring=right, sleeve=ground).
4A. MIXER INPUT SECTION—ALL CHANNELS. In addition
to the controls listed in section 2 (MIXER INPUTS), each
channel shall include 4 rotary Aux Send controls, providing
up to 15dB gain; 1 pre/post switch for Auxes 1 and 2;
1 rotary Pan control, 4dB attenuation panned center; 1
Mute switch; 1 dual-mode solo switch (AFL or PFL, globally
switched); 3 output Assign switches, delivering the chan-
nel's signal, relative to its Pan setting, to the Main L-R Mix,
Submasters 1–2 and Submasters 3–4; and 1 channel Fader,
providing up to 10dB above unity gain. Additionally, each
channel shall include two LED indicators; a –20/Solo LED
acting as a Signal Present indicator by flickering and as a
channel Solo indicator by glowing steadily; and an OL/Mute
LED, acting as an overload indicator by flickering and as a
channel Mute indicator by glowing steadily.
4B. CHANNELS 1–8. In addition to the controls listed
in Section 2 and 4A, each channel shall include 4 rotary
equalization (EQ) controls: ±15dB fixed 12kHz shelving
gain, ±15dB midrange peaking gain, 100Hz – 8kHz mid-
range frequency, ±15dB fixed 80Hz shelving control and an
18dB/octave 75Hz Low Cut filter accessible via push switch.
4C. CHANNELS 9–16. In addition to the controls listed
in Section 2 and 4A, each channel shall include 4 rotary
equalization (EQ) controls: ±15dB fixed 12kHz shelving gain,
±15dB fixed 3K High midrange peaking gain, ±15dB fixed
800HZ Low midrange peaking gain, and ±15dB fixed 80Hz
shelving control. Channels 9/10 & 11/12 also include an
18dB/octave 75Hz Low Cut filter accessible via push switch.
5. MIXER OUTPUT SECTION. The mixer shall have 1 Main
Mix stereo fader, providing up to 10dB gain; 4 Submaster
mono faders, each providing up to 10dB gain; independent Left
and Right assign switches for each Submaster; separate con-
trol room and phones rotary stereo level controls, providing up
to 10dB gain; 1 Source Matrix, including 4 switches to deliver
any combination of stereo signals to the Control Room, Phones
and Meters, including Main Mix, Submasters 1–2, Submasters
3–4 and Tape, which shall be replaced by solo signals resulting
from the engagement of any Solo switch; 1 rotary stereo Tape
In level control, providing up to 20dB gain; 1 Tape to Main
Mix switch; 1 Solo Mode switch to globally determine solo
type (pre-fader listen or after-fader listen, in place); 1 rotary
stereo Solo level control, providing up to 10dB gain; 4 rotary
stereo Aux Return level controls, providing up to 20dB gain; 2
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