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x.sum
Mix it - Group it - Combine it - Blend it - Sum it.
The X.Sum design takes you beyond the simple “hard-left” or “hard-right” summing box,
and gives you 16 stereo input channels with level, pan, mix assign and mono select.
If you need more than simple summing.
The X.Sum is a 32 x 4 analog line mixer that can be used for external DAW summing or as a line
mixer for effects, external pres, synths, or any line signal. Any combination of the 16 stereo
channels can be assigned to either the main stereo Mix output or the stereo Mix-B output.
Analog Summing Mixer
The In's & Out's
All audio inputs and outputs are
active-balanced and available on TRS
connectors. Connect the X.Sum to
virtually any line level source:
balanced, unbalanced, transformer, or
transformer-less. The X.Sum has
high headroom that will handle
balanced
signals up
to +28dBu.
Use the mix
outputs of
the X.Sum
to get a
"Neutral & Clean" sound or connect
your own preamps to the pre-fader
outputs on the external breakout box
to add "Color & Warmth" to your mix.
Features
16 Stereo Balanced Line Inputs
• Stereo level control.
• Pan/balance control.
• Mix assign switch that
routes to either the stereo
main mix or stereo Mix-B.
• Mono Switch.
• Active-Balanced TRS inputs.
Master Section
• Master level control.
• Stereo/mono switch.
• Monitor level provides
adjustment to the headphone
jack and Mix-B output.
• Active-balanced TRS
stereo o u t p u t s .
• Pre-fader outputs may be used
to connect monitor controller or
external preamps.
Specifications
Frequency Response
3Hz-54kHz (+0/-.5dB)
THD+n (Output +24dBu)
.0024%
Noise (22Hz-22kHz)
-102dBu (Residual noise)
-87dBu (16 channels routed,
faders off)
Maximum Input Level
+28dBu
Maximum Output Level
+28dBu
Input Impedance
30K Ohms (Balanced)
15K Ohms (Unbalanced)
Output Impedance
60 Ohms
Dimensions (Mixer)
WxHxD=1.75" x 19" x 10.75"
(44mm x 483mm x 273mm)
Dimensions (Power Supply)
WxHxD=4.6" x 2.75" x 7.3"
(117mm x 70mm x 185mm)
Shipping Weight (Mixer & PS)
15 Lbs (6.8kg)
Speck Electronics • 341 E. Alvarado Street, Fallbrook, California 92028, USA
Voice: +760-723-4281 • Fax: +760-723-3294 • email: [email protected] • www.speck.com
Copyright © 2004-2007 by Speck Electronics. X.Sum is an exclusive Trademark of Speck Electronics.
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x.sum
Analog Summing Mixer
The Mix switch assigns the input channel to the
left/right master outputs. When this switch is in the
out position the channel is assigned to Mix-B outputs.
This outer knob is the Pan/Balance
control and places the channel anywhere
in the stereo left/right perspective.
This inner knob is the Input Level
control that simultaneously and equally
adjusts the left and right signals.
The Mono switch on the input channel sums the left
and right signals together creating a mono composite.
The 0dB calibrate mark is the "unity gain"
setting when the X.Sum is being used
exclusively for DAW summing.
The Mono switch on the master section
combines left/right signals to the main mix.
The Multi-function I/O connector is used to connect the Breakout
Box (shown at left) or link up to three additional X.Sum's.
The Master control adjusts the
level to the Mix-A outputs.
The Monitor control adjusts the level
to the headphone jack and the Mix-B
outputs on the breakout box.
The Mix-B switch changes
the source and the function
of the Monitor control.
Standard ¼" stereo phone
jack will operate with any
impedance headphone.
Stereo Active-balanced
line inputs can handle
levels up to +28dBu.
The Mix-B Outputs are
adjusted with the Monitor
control on the front panel.
MONO
LEFT
(MONO)
LINE
INPUT
RIGHT
To Multi-Purpose
I/O Jack
To Multi-Purpose
I/O Jack
The Mix-A (Pre-Fader) outputs bypass the master circuitry of
the X.Sum. Use these outputs to connect a monitor controller
or to connect your own external preamps for color and warmth.
INPUT CHANNEL
Typical of 16
LEVEL
COMBO
BREAKOUT BOX
LEFT
RIGHT
LEFT
RIGHT
LINK CABLE
(Option)
PAN
MIX-B
OUTPUT
MIX-A
OUTPUT
(Pre Fader)
To Additional
X.Sum Mixer
MIX ASSIGN
MIX-B
MAIN
The active-balanced Mix Outputs are
adjusted with the Master control and can be
used anywhere a stereo signal is needed.
MASTER SECTION
MONO
MASTER
LEVEL
S
S
MAIN MIX BUS
MIX-B BUS
MONITOR
MAIN
MIX-B
MONITOR
LEVEL
S
LEFT
MIX
OUTPUT
RIGHT
MULTI-PURPOSE
I/O
L
SUMMING INPUT
R
L
MIX-A (PRE-FADER)
R
L
MIX-B OUTPUT
R
HEADPHONE
Signal Flow Diagram
S
Copyright © 2004-2007 by Speck Electronics. X.Sum is an exclusive Trademark of Speck Electronics.
Information and specifications are subject to change without notice.
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