2/6/98
3 2 x2 x2 STEREO LINE MIXER
XLR input switchable phan-
tom microphone powering, a
preamplifier gain control and
a balanced line-level output.
2. POWER SUPPLY. All
necessary operating volt-
ages for the mixer shall be
provided by an internal
shielded power supply.
1. GENERAL CONFIGURA-
TION. The audio mixer shall
have a rack-mountable
frame which accommodates
16 stereo input channels, 2
main output channels and 2
3. INPUT CHANNEL CON-
NECTIONS. Each mixer
input channel shall have a
MORE INFORMATION
left and a right electroni-
alternate output channels.
cally balanced line-level
Each input channel shall be
THESE SPECIFICATIONS
ARE AVAILABLE ON 3.5"
PC & MAC FORMAT DISK IN
POPULAR WORD
input, accommodating a
capable of accepting either
nominal line level of be-
stereo or monaural signals,
tween –10 dBV and +4
and shall be fitted with
PROCESSOR FORMATS
■
dBu, and appearing on the
stereo level, equalization,
1
rear panel as ⁄4" TRS
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FAX 425/487-4337
OUTSIDE THE U.S., CALL
425/ 487-4333
balance, solo, muting and
auxiliary send controls,
phone jacks (tip hot, ring
cold). The jacks shall be fit-
level-indicating (-20) LEDs
ted with internal switches
and overload (O/ L) LEDs.
to accommodate monaural
Input channels 1 through 4
configuration. Additionally,
shall each be fitted with left
input channels 1 through 4
and right insert jacks. The
shall offer left and right
main output channels shall
each have a level control, an
unbalanced insert connec-
tions, appearing on the rear
electronic level meter and a
1
panel as ⁄4" TRS phone
shelving equalizer with the
knee set at 80 Hz and a
range of ±15 dB; a mid-
frequency peaking equalizer
centered at 2.5 kHz featur-
ing a bandwidth of 2 oc-
taves and a range of ±12
dB; and a high-frequency
shelving equalizer with the
knee set at 12 kHz and a
range of ±15 dB.
bus insert jack.
jacks (tip send, ring return).
Additionally, the mixer shall
include a solo function, a
monitor switching and
control function, 4 stereo
4. INPUT CHANNEL LEVEL
AND ASSIGNMENT CON-
TROLS AND INDICATORS.
Each mixer input channel
effects return inputs with
shall be equipped with a
alternate routing switching,
rotary dual gain control, a
2 stereo pairs effects send
solo switch, a mute switch
outputs, 2 monaural effects
which also functions as an
send outputs, 1 stereo pair
assignment switch to the
control room output, 1
alternate output channels,
stereo headphone output,
6. INPUT CHANNEL AUXIL-
IARY SENDS. Each mixer
input channel shall have 1
stereo auxiliary send control
and 1 monaural auxiliary
send control. The auxiliary
send controls shall be
and a stereo balance control.
1 set of stereo tape re-
5. INPUT CHANNEL
EQUALIZATION. Each mixer
input channel shall be
equipped with a stereo
equalization function. The
equalizer shall have three
sections: a low-frequency
corder RCA outputs, and 1
set of stereo tape monitor
RCA inputs. The mixer shall
also include 2 independent
patchable microphone pre-
amplifiers, each fitted with
an electronically balanced
switchable between 2 sets
of auxiliary send buses,
®
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Impedances. Mic preamp
input, 2.5 kΩ. All other in-
puts, 10 kΩ. All outputs,
120 kΩ.
21. INPUT CHANNEL
CONNECTIONS. Each
expander input channel
shall have a left and a right
electronically balanced line-
level input, accommodating
a nominal line level of
between the mixer and the
optional expander unit(s), if
used; and which shall be
designed to mate with the
connectors on the expander
ribbon cable provided with
each Expander unit.
Equalization. Lo EQ Shelv-
ing @ 80 Hz, ±15 dB. Mid
EQ Peak @ 2.5 kHz,
±12 dB. Hi EQ Shelving @
between –10dBV and
12 kHz, ±15 dB.
+4dBu, and appearing on
1
Microphone Preamp. E.I.N. the rear panel as /4" TRS
(150 Ω terminated, maxi-
mum gain), –129 dBm.
phone jacks (tip hot, ring
cold). The jacks shall be
fitted with internal switches
to accommodate monaural
configuration. Additionally,
input channels 1 through 4
shall offer left and right
16. PHYSICAL CONFIGU-
RATION. The mixer shall
have a steel chassis frame
painted grey-black and
designed to mount in a
standart 19" relay rack. The
mixer’s dimensions shall be
8.73" high (5 rack units) by
19.00" wide (rack ears are
built-in) by 9.66" deep.
18. DESIGNATION. The
audio mixer shall be a
Mackie Designs LM-3204.
unbalanced insert connec-
tions, appearing on the rear
LM-3204E Expander
1
panel as /4" TRS phone
jacks (tip send, ring return).
17. OVERALL MINIMUM
SPECIFICATIONS. In ad-
dition to specifications
previously cited, the
mixer shall meet or
exceed the following
22. INPUT CHANNEL LEVEL
AND ASSIGNMENT CON-
TROLS AND INDICATORS.
Each expander input chan-
nel shall be equipped with a
rotary dual gain control, a
solo switch, a mute switch
which also functions as an
assignment switch to the
alternate output channels,
and a stereo balance
control. Additionally, any
soloed channel(s) shall have
their –20 and O/ L LEDs light
steadily, to indicate a solo
condition.
performance criteria:
19. GENERAL
Noise. (20 Hz–20 kHz
bandwidth, Line inputs to
Main L/ R outputs, all chan-
nels assigned.) Master
fader down, Channel gains
down, –104.2 dBu. Master
fader unity, Channel gains
down (Mix Noise), –86.6
dBu. Master fader unity,
Channels gains unity,
–84.0 dBu.
Total Harmonic Distortion.
(1 kHz @ +14 dBu,
20 Hz–20 kHz.) Channel
input to any output, below
.0025% typical.
Attenuation (1 kHz @
0 dBu. 20 Hz–20 kHz
bandwidth, Channel in, to
Main Left outputs.) Chan-
nel gain down, –73 dBu.
Channel muted, –81 dBu.
Frequency Response.
(Any input to Main out-
put.) 20 Hz to 60 kHz,
+0 dB/ –1 dB. 10 Hz to
100 kHz, +0 dB/ 3 dB.
Maximum Levels. Mic
preamp input, +14 dBu. All
other inputs, +22 dBu. All
outputs, +22 dBu.
CONFIGURATION. The
expander unit shall not be
designed to operate alone,
but in conjunction with a
Mackie Designs LM-3204
Line Mixer. The expander
shall have a rack-mount-
able frame which accom-
modates 16 stereo input
channels. Each input
channel shall be capable of
accepting either stereo or
monaural signals, and shall
be fitted with stereo level,
equalization, balance, solo,
muting and auxiliary send
controls, level-indicating
(–20) LEDs and overload
(O/ L) LEDs. Input channels
1 through 4 shall each be
fitted with left and right
insert jacks.
23. INPUT CHANNEL
EQUALIZATION. Each
expander input channel shall
be equipped with a stereo
equalization function. The
equalizer shall have three
sections: a low-frequency
shelving equalizer with the
knee set at 80Hz and a range
of ±15dB; a mid-frequency
peaking equalizer centered
at 2.5kHz featuring a band-
width of 2 octaves and a
range of ±12dB; and a high-
frequency shelving equalizer
with the knee set at 12kHz
and a range of ±15dB.
Additionally, the expander
shall include 4 stereo
effects return inputs.
20. POWER SUPPLY. All
necessary operating voltages
for the expander shall be
provided by an internal
shielded power supply.
24. INPUT CHANNEL
AUXILIARY SENDS. Each
expander input channel
shall have one stereo
3
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4
auxiliary send control and
one monaural auxiliary
send control. The auxiliary
send controls shall be
switchable between 2 sets
of auxiliary send buses,
which shall be a 20 pin
IDC-type connector and
shall be designed to mate
with the connectors on the
expander ribbon cable pro-
vided with the each Ex-
accommodating a total of 2 pander unit. The expander
stereo auxiliary send buses
and 2 monaural auxiliary
send buses.
output connector shall carry
all audio and control sig-
nals between the expander
and the mixer (or next
downstream expander).
The expander input connec-
tor shall carry all audio and
control signals between the
expander and the next up-
stream expander, if used.
25. AUXILIARY RETURN
CONNECTIONS. The ex-
pander shall include 4 ste-
reo auxiliary return inputs.
Each auxiliary return shall
have a left and a right un-
balanced line-level input,
accommodating a nominal
line level of between
28. PHYSICAL CONFIGU-
RATION. The expander shall
have a steel chassis frame
painted grey-black and
designed to mount in a
standard 19" relay rack. The
–10dBV and +4dBu, and
shall appear on the rear
1
panel as ⁄4" phone TRS
phone jacks. The jacks
shall be fitted with internal expander’s dimensions
switches to accommodate shall be 8.73" high (5 rack
monaural configuration, by units) by 19.00" wide (rack
using only the left jack(s).
ears are built-in) by 9.66"
deep.
26. AUXILIARY RETURN
CONTROLS AND
SWITCHES. The expander
29. OVERALL MINIMUM
SPECIFICATIONS. When
properly interfaced and
used with the LM-3204
Stereo Line Mixer, the total
system (mixer plus expander)
specifications remain the
same as the mixer specifica-
tions cited in paragraph 17.
shall include 4 dual-
channel auxiliary return
gain controls, each feeding
the main stereo buses.
27. EXPANDER FUNCTION.
The expander shall be fitted
with an “expander output”
connector and an “ex-
pander input” connector
mounted on the rear of the
expander frame, each of
30. The mixer expander
shall be a Mackie Designs
LM-3204E.
Because Mackie Designs constantly endeavors
to improve its products with new components
and manufacturing methods, all specifications
are subject to change without notice. Rev 1.2
©1995-1998 Mackie Designs.
“Mackie.” is a registered trademark of Mackie
Designs Inc.
®
MACKIE DESIGNS INC. • 16220 WOOD-RED RD. N.E.
WOODINVILLE • WA • USA • PHONE TOLLFREE 800/ 258-6883
FAX 425/487-4337 • OUTSIDE THE U.S., PHONE 425/487-4333
4
1006 9/ 95
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