Quad Active Mic Splitter Active Signal Distribution System The MSR-604 II is a 4-channel one by four, active microphone/line level distribution system, capable of supplying 4, 8, 12, or 16 outputs from a single input. Each channel features:
The system requires an MSR-602 II power supply, and is compatible with existing MSR-604 units (adapter cables required). Options:
The MSR-602 II is the power supply for the MSR-604 II and will run 5 MSR-604 II units. The unit also provides the headphone monitor output and signal metering. Two MSR-602 II units may be linked for fail-safe operation. Specifications
Impedance
Mic:2kOhm.
Line: 10kOhm, electronically balanced.
Max. Input Level
Mic: +13dBu.
Line: +33dBu.
CMRR
Better than 90dB @ 1kHz>75dB 50Hz to 10kHz.
Connector
XLR3-31 or equivalent.
Phantom Power
48V DC via panel switch and LED indicator.
Outputs
Main (F.O.H) & Mon, electronically balanced
+3 out: Less than 23 Ohm, +13 out: Less than 71 Ohm,
+23 out: Less than 100 Ohm
Connectors
XLR3-32 or equivalent.
Max. Output Level
+3dBm, +13dBm, +23dBu, internally preset.
MAX. LOAD
+3 out: 200 Ohm +13, +23 out: 600 Ohm.
Feeds, Two
Less than 50 Ohm.
+3dBm.
Max. Load
600 Ohm.
Isolation
2.5kV ACrms.
Gain Functions
Gain
-40dB to +50dB.
Gain Switch
-10, 0, 10, 20, 30 via panel.
Mic/Line pad
0/-20dB via panel.
Remote Pad
0/-10dB via F.O.H phantom.
Output Scaling
+20/+10/0dB via internal jumper blocks. (Main & Mon only).
System Performance
Frequency Response
+/-0.5dB , 20Hz to 20kHz.
Noise (E.I.N)
-10dB gain: Less than -114dBu.
0dB gain: Less than -121dBu.
10dB gain: Less than -124dBu.
20dB gain: Less than -125dBu.
30dB gain: Less than -126dBu.
Distortion (T.H.D)
Less than 0.1% 20Hz to 20kHz @ 10dB below clip.
Level metering and monitoring
Channel
Clip LED @ 1dB below clip.
Headroom meter
On MSR-602 II PSU: Six point LED meter: -1, -3, -6, -12, -26dB via LISTEN switch (momentary).
Headphone monitor
On MSR-602 II PSU: via LISTEN switch (momentary). Stereo/Mono 1/4" Jack socket.
Load Impedance: 4 Ohms to 600 Ohms.
Maximum Output: 1W rms. Level control: -90dB to 0dB.
General
Power Requirements
27V DC, DC from MSR-602 II PSU only. Connectors: 9 pin 'D', with lock jackscrews.
Weight
3.8kg net, 8.4 lbs.
Dimensions
44mm x 482mm x 293mm, 1.75" x 19" x 11.6".
MSR-602 II POWER SUPPLY FOR MSR-604 II
AC Input
90-130/180-260 V AC 50/60Hz @ 150VA.
3 pin IEC with locking clip.
Voltage Selector
Rear panel: 120/240 V.
Switch
Rear panel: High-inrush.
Fuse
Rear panel: F6.3A (120V)/F5A (240V).
DC Outputs
� unregulated @ 4A max: low ripple.
-27V unregulated @ 4A max: low ripple.
5% regulated @ 500mA max.
Fuses
Rear panel: F5A (�); F5A (-27V); F500mA ().
9 pin 'D' female: Loop out.
9 pin 'D' male: Loop return.
System Ground Lift
Rear panel: Slide switch
Indicators
3 LED's, post-fuse, on , -27 and outputs.
Headroom Meter
Via LISTEN bus and MSR-604 II LISTEN switch (momentary). Six point LED meter:
0, -1, 3, -6, -12, -26dB ref clip.
Input: via DC loop out connector.
Headphone Output
Via LISTEN bus and MSR-604 II LISTEN switch. Input : via DC Loop out connector
Connector: Stereo/Mono 1/4" Jack socket
Maximum Output: 4 Ohms:860mW rms. 200 Ohms:750mW rms.
Level control:
Continuously variable -90dB to 0dB. Headroom: Greater than MSR-604 II channel clip.
7.0kg net, 15.4 lbs
44mm x 482mm x 293mm, 1.75" x 19" x 11.6"
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