Sound Performance Lab Stereo Equalizer 2489 User Manual

Manual  
Surround Monitor Controller  
Model 2489  
One-point stereo and 5.1 volume control, source and speaker management  
 
Contents  
Introduction ............................................................................................... 4  
Before you begin ........................................................................................ 5  
Power Supply .............................................................................................. 5  
Rear panel/Connections ............................................................................. 6  
Inputs and outputs .................................................................................... 7  
INPUTs A & C (Sub-D 25) ............................................................................. 7  
SLAVE OUT (Sub-D 25) ................................................................................ 7  
INPUTs B & D (RCA) ..................................................................................... 7  
SURROUND and SPEAKER OUTPUTS ........................................................... 7  
Sub-D 25 connector pin configuration ......................................................... 7  
Operation ................................................................................................... 8  
Volume control ........................................................................................... 8  
Source ........................................................................................................ 8  
Monitor Mode ............................................................................................. 8  
Speakers On ............................................................................................... 9  
Technical Specifications ............................................................................. 9  
Warranty..................................................................................................... 10  
Notes .......................................................................................................... 11  
Surround Monitor Controller 2489  
3
 
Introduction  
The SPL Surround Monitor Controller (SMC) is a one-point analog volume control  
and switching matrix for system-independent 5.1 surround and stereo moni-  
toring. Designed to provide only the necessary functions with excellent audio  
quality, the SMC offers a uniquely cost-effective stereo and surround speaker  
and source management solution for essentially any audio application:  
• Surround and stereo production  
• DVD-V, DVD-A, SACD and DTS authoring  
• Film and video postproduction  
• Video and game production  
• A/V and multimedia production  
• Audiophile home entertainment systems  
The advantages of the SMC become especially apparent in combination with  
modern audio and video production tools such as ProTools™, Nuendo™,  
Cubase™, Logic™, Deck™, etc. Monitor levels and source management can  
be handled independently of the software and with virtually no loss in quality.  
You no longer need to set up additional aux sends or an alternative surround  
master for monitoring. In addition, you won’t have to worry about over- or  
underdriving the converters due to monitor levels.  
One of the SMC’s biggest advantages is the possibility to manage several  
input sources: comparing and monitoring SACD or DVD material is much easier  
than having to import all of your audio files and set up monitor mixes – not to  
mention the conversion of multichannel audio.  
Standard A/V receivers are often used for this task. The problem with this is  
that the audio has to be either AD/DA converted or manipulated by signal-  
degenerating control circuitry (VCAs, DACs etc.) for volume control, so you  
never hear the unadulterated audio – especially frustrating when you’re  
working on SACD or DVD-A projects.  
In addition to a surround speaker set, a stereo pair can be connected to and  
managed by the SMC. A Sub-D input connector provides six surround and two  
stereo input channels. Eight additional RCA connectors allow easy connection  
of SACD, DVD, CD or DAT players. A slave output allows the stereo or surround  
input signal to be routed directly to a recording device. Volume control is  
handled by a discrete six-layer potentiometer and all switching functions by  
extremely durable precision pushbuttons.  
SPL’s renowned electronic balancing circuitry forms the basis for the SMC’s  
I/O architecture. Its extended frequency range up to 100 kHz, exceptional  
dynamic spectrum and excellent common mode rejection ensure specs that  
exceed SACD standards, as only highest quality analog circuitry can provide.  
The SMC’s rugged and ergonomic steel-blue desktop enclosure with its  
slanted front panel harmonizes perfectly with desktop production environ-  
ments.  
Surround Monitor Controller 2489  
4
 
Before you begin  
IMPORTANT: Before connecting the SMC or any other equipment turn off all  
power at all units.  
It makes good sense to think about where you place your SMC before connec-  
ting it. It should be positioned so that you can easily reach it, but there are  
other considerations. Try not to place it near heat sources or in direct sunlight,  
and avoid exposure to excessive vibrations, dust, heat, cold or moisture. It  
should also be kept away from transformers, motors, power amplifiers and  
digital processors. In addition, please:  
• Do not open the case. You may risk electric shock and damage to your  
equipment.  
• Leave repairs and maintenance to a qualified service technician. Should  
foreign objects fall inside the case, contact your authorized dealer or  
support person.  
• To avoid electric shock or fire hazards, do not expose your unit to rain or  
moisture.  
• In case of lightning, unplug the unit. Always unplug the cable by pulling on  
the plug only; never pull on the cable.  
• Never force a switch or knob.  
• Use a soft, lint-free cloth to clean the case. Avoid cleaning agents as they  
may damage the unit.  
Power Supply  
The SMC’s power supply was carefully engineered to provide clean and consis-  
tent current – an important prerequisite for excellent audio. Built around a  
toroidal transformer, the power supply generates a minimal electromagnetic  
field with no hum or mechanical noise. The output side is filtered by an RC  
circuit to extract noise and hums inherent in commercial AC power.  
All audio-related components are fed by two separate voltage regulators to  
minimize disturbance from other components.  
An AC power cord is included for connection to the standard 3-prong IEC  
connector. The transformer, power cord and IEC connector are VDE, UL and  
CSA approved. The AC fuse is rated at 315mA (230V version) or 630mA (115V  
version).  
Surround Monitor Controller 2489  
5
 
Rear panel/connections  
DAW/  
DA converter  
Multitrack recorder  
CD/DAT player  
SACD/DVD player  
I n p u t A + C  
I n p u t D  
Input D  
I n p u t B  
Input B  
MAINS INPUT  
POWER  
Input A + C  
L
E L F  
L S  
LS  
S R  
RS  
p e a k e r O u t p S u t r s r o u n d S  
Surround Speaker Outputs  
L
Sound  
Balanced Input  
Performance Lab  
L
LFE  
L
See Manual for Pin Configuration  
Surround Monitor  
Controller  
Model 2489  
SLAVE OUT  
R
C
R
VOLTAGE SETTING / FUSE RATING  
220 – 240 V ~ 50 Hz / Fuse: 315 mA  
110 – 120 V ~ 60 Hz / Fuse: 630 mA  
R
C
R
Made in Germany  
p e a k e r O S u t t e s r e o S  
Stereo Speaker Outs  
WARNING  
TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK  
DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE  
SERIAL No.  
R
L
E L F  
LFE  
C
S R  
RS  
L S  
LS  
R
L
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
R
L
C
R
L
Balanced Outputs: Use Stereo Jacks / Unbalanced Outputs: Use Mono Jacks  
AVIS: RISQUE DE CHOC ÉLECTRIQUE - NE PAS OUVRIR  
Stereo speakers  
Surround speakers  
Christian Preissig, media dell‘ arte - text&ton, E-Mail: [email protected]  
Surround Monitor Controller 2489  
6
 
Connectors  
The SMC enclosure is EMC-safe and effectively shielded against HF interfer-  
ence. Nonetheless, you should carefully consider where you place the unit to  
avoid electrical disturbances. The SMC and all devices to be connected should  
be turned off before connections are made or change to avoid damage to your  
speakers and ears.  
Inputs and outputs  
INPUT A & INPUT C (Sub-D 25; analog)  
This Sub-D connector provides balanced connections for INPUT A & INPUT C  
(INPUT A for six surround channels, INPUT C for two stereo channels). Use this  
connector for your multichannel source, i.e. DAW or DA converter.  
SLAVE OUT (Sub-D 25; analog)  
The SLAVE OUT provides a direct output of the INPUT A & INPUT C signals  
for connection to external equipment e.g. recorders, leaving the converter  
outputs free.  
INPUT B & INPUT D (RCA)  
Eight RCA input connectors are available for six surround channels and two  
stereo channels. INPUT B provides surround connection for SACD or DVD  
players, while INPUT D provides connection for stereo sources such as DAT or  
CD players.  
Tip: If a recording device is connected to the SLAVE OUT, its outputs can be  
connected to INPUT B for tape monitoring purposes.  
SURROUND and SPEAKER OUTPUTS (1/4“ TRS)  
Eight balanced, 1/4"TRS connectors allow connection of a six-channel  
surround speaker set and a stereo speaker pair. Use standard mono 1/4” plugs  
for unbalanced connections.  
Sub-D 25 connector pin configuration  
The pin configuration complies with the TASCAM standard.  
1=L  
2=R 3=LS 4=RS 5=C 6=LFE 7=St. L 8=St. R  
G C H G C H G C H G C H G C H G C H G C H G C H  
13 12 11 10  
9
8
7
6
5
4
3
2
1
25 24 23 22 21 20 19 18 17 16 15 14  
G = Ground, C = cold (-), H = hot (+)  
Surround Monitor Controller 2489  
7
 
Operation  
Volume Control  
The volume is centrally controlled for all channels via a discrete six-level  
potentiometer with an extremely linear curve. The potentiometer controls  
the audio signals directly without any signal-degenerating circuitry such as  
VCAs or DACs, which tend to create tolerances between channels as well as  
distortion. The white circle with the potency scale can be easily marked using  
a pencil.  
Source Buttons Surround A/B and Stereo C/D  
The source buttons Surround A/B and Stereo C/D allow easy switching  
between surround and stereo sources (inputs). Two surround and two stereo  
sources are available.  
The middle button selects between surround and stereo sources. When  
depressed (in), the stereo sources are active; when not depressed (out) the  
surround sources are selected.  
The left button selects either surround source A (out) and B (in), while the  
right button selects either stereo source C (out) or D (in).  
Monitor Mode Buttons (Mono, Dim, Mute All)  
The Monitor Mode buttons provide various monitoring functions: MONO L/R,  
MONO LS/RS, DIM -20 and MUTE ALL.  
MONO L/R and MONO LS/RS switches the front L and R channels and the rear  
LS and RS channels to mono, respectively, and can be used to check phase  
correlation. The MONO LS/RS mode has no effect when a stereo speaker pair  
is selected.  
DIM lowers the monitor volume by -20 dB without changing the volume  
pot setting, for example to control a mix at low volume (or to answer the  
phone…).  
MUTE ALL does exactly what it says: it mutes all speaker outputs.  
Surround Monitor Controller 2489  
8
 
Operation  
Speaker Buttons  
The speaker buttons enable each surround speaker output (L, C, R, LS, RS,  
LFE) and the stereo pair output to be switched on (pressed) and off indepen-  
dently.  
Tip: If you are not using a surround speaker set, you can connect two stereo  
speaker pairs to the SMC. Simply connect one pair to the Stereo Speaker  
Outputs and the second pair to the Surround Speaker Outputs L and R.  
Technical Specifications  
Input Impedance  
Balanced (Sub-D)  
Unbalanced (RCA)  
50kOhms  
›10kOhms  
Output Impedance  
Balanced (1/4“ TRS)  
‹600Ohms  
THD+N  
-10dB (Input level)  
0dB  
+10dB  
+18dB  
+22dB  
0.04%  
0.01%  
0.006%  
0.002%  
0.1%  
Noise, A-weighted  
Maximum Input Level  
Dynamic Response  
-98dB  
+22dB  
120dB  
Common Mode Rejection  
@100Hz  
@1kHz  
@10kHz  
@100kHz  
›70dBu  
›70dBu  
›60dBu  
›50dBu  
Frequency Response  
Phase  
10Hz-100kHz (-3dB)  
-36° (10Hz-120kHz, -3dB center frequency)  
20Hz-100kHz  
Phase (linear)  
Dimensions H x W x D:  
Weight  
91 x 272 x 220mm (3 9/16" x 10 11/16" x 8 21/32")  
2.3kg (5lbs)  
SPL reserves the right to make technical changes without prior notice.  
Surround Monitor Controller 2489  
9
 
Warranty  
All SPL products come with a two-year manufacturer’s guarantee against  
defects in material or assembly from the date of purchase.  
End users are supported in the two-year guarantee through their distributor  
or dealer. In such cases, please contact your dealer for full guarantee condi-  
tions and service.  
Direct SPL product support requires product registration. Please fill out the  
guarantee card enclosed in the package legibly in printed letters and send it  
directly to SPL.  
Or use the online registration form that may be reached at www.soundper-  
formancelab.com (international clients) or www.spl-usa.com (US clients).  
Surround Monitor Controller 2489  
10  
 
Notes  
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Surround Monitor Controller 2489  
11  
 
< Manual SMC, Model 2489  
Surround Monitor Controller 2489  
 

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