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BSS Audio
V 1.4
JMK
This equipment has been tested and found to comply with the following European
and international Standards for Electromagnetic Compatibility and Electrical Safety:
Radiated Emissions (EU):
RF Immunity (EU):
Mains Disturbance (EU):
Electrical Safety (EU):
IMPORTANT SAFETY INFORMATION
DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE, REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL. THIS EQUIPMENT MUST BE EARTHED.
IT SHOULD NOT BE NECESSARY TO REMOVE ANY PROTECTIVE EARTH OR SIGNAL
CABLE SHIELD CONNECTIONS TO PREVENT GROUND LOOPS. ANY SUCH
DISCONNECTIONS ARE OUTSIDE THE RECOMMENDED PRACTISE OF BSS AUDIO
AND WILL RENDER ANY EMC OR SAFETY CERTIFICATION VOID.
We have written this manual with the aim of helping installers, sound engineers
and consultants alike get to grips with the MSR-604ii and obtain its maximum
capability.
Should you have any comments or questions about applying the MSR-604ii series
within your application, please write to us, or e-mail us, at the addresses in the
warranty section. We welcome any comments or questions regarding the MSR-
604ii series or other BSS products, and you may contact us at the address or World
Wide Web site given in the warranty section.
MSR-604ii User Manual version v1.4
th
4
December 1997
MSR-604ii
User Manual
EN55013
(1990) Associated Equipment
EN50082/1
(1992) RF Immunity, Fast
EN61000/3/2
(1995)
EN60065
(1993)
interstage
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
- pro audio with a smile
Transients ESD
Page 1
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Table of Contents
Summary of Contents for BSS Audio MSR-604ii
- Page 1 AND WILL RENDER ANY EMC OR SAFETY CERTIFICATION VOID. We have written this manual with the aim of helping installers, sound engineers and consultants alike get to grips with the MSR-604ii and obtain its maximum capability. Should you have any comments or questions about applying the MSR-604ii series within your application, please write to us, or e-mail us, at the addresses in the warranty section.
-
Page 2: Table Of Contents
6.6 Multiple output distribution amplifier configuration 7 Compatibility with Pre-MkII systems 7.1 Installing an MSR-604ii in a MkI system 7.2 Installing Pre-MkII MSR-604iis in a new system 7.3 Installing a MkII Power supply into a MkI system, and vice versa 8 Appendix A 8.1 Circuit description... -
Page 3: Introduction
The MSR-604ii is a four channel, four way signal splitting package and the MSR- 602ii is the system power supply capable of supplying power for 40 channels, that is, 10 separate MSR-604ii units. -
Page 4: Msr-602Ii Power Supply
.2 MSR-602ii Power supply The MSR-602ii is the system power supply providing all the necessary DC voltages for the MSR-604ii. It utilises a custom designed low field toroidal transformer and separate mu-metal screen to reduce the possibility of mains field coupling into the electronic circuitry of the MSR-604ii. -
Page 5: Unpacking
BSS Audio MSR-604ii User Manual version v1.4 2 Unpacking As part of our system of quality control, this product is carefully inspected before packing to ensure flawless appearance. After unpacking the units, please inspect for any physical damage and retain the shipping carton and all relevant packing materials, should the unit require repacking. -
Page 6: Voltage Setting
Any rack framework that this unit might be mounted into is assumed to be connected to the same grounding circuit. the MSR-604ii has electronically balanced audio connections and does not need disconnection of any safety earth for the avoidance of hum loops. -
Page 7: Dc Power Connections
9 pin D connectors. Note that the MSR-602ii power supply must always be located above the MSR-604ii units. (NB - this is opposite to the way early MSR-604s were racked.) Having the power supply at the... - Page 8 BSS Audio MSR-604ii User Manual version v1.4 For consistent remote attenuator switching and microphone screening, it is important that the pin 1 earth connection is maintained. (See section 6.5; Output drive level setting for configuring the output drive level.) Mon out - rear panel:...
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Page 9: Msr-602Ii Controls
BSS Audio MSR-604ii User Manual version v1.4 4 MSR-602ii Controls System ground This switch, located on the rear panel, is the main grounding point for all the MSR- 604ii units connected to the system. The switch will connect the electronic/signal ground to chassis earth when in the ‘EARTHED’... -
Page 10: Msr-604Ii Controls
-10dB to +30dB to precisely match the input signal to the internal headroom of the MSR-604ii. Combined with the very low inherent noise of the input stage this ensures that none of the dynamic range of the source is lost. -
Page 11: System Implementation And Use
The MSR-602ii power supply unit, unlike its predecessor has been designed for mounting at the TOP of a rack, above the MSR-604ii units it powers. In a properly installed MSR system mains induced hum from the PSU will be unmeasurable. -
Page 12: Grounding
That is, the cable screening will be derived from the monitor console, but should not be connected to the electronic 0v earthing system of the MSR-604ii via pin 1 of the connector. Page 12... -
Page 13: Channel Coding
MSR-604. All outputs are set to mic level when the MSR-604ii leaves the factory. Note that the FEED outputs are set for clip at +3dBm (mic level) only and cannot be changed. -
Page 14: Multiple Output Distribution Amplifier Configuration
For use as a distribution amplifier, or in any situation where more than four outputs per channel are required, the MSR-604ii system may be reconfigured by moving internal jumpers. Up to sixteen adjacent channel sections, a total of sixty four outputs may be driven from a single input stage. -
Page 15: Compatibility With Pre-Mkii Systems
EXBUS-IN terminal in the LOOP IN connector on the adjacent unit, allowing a D.A. channel to span more than one MSR-604ii unit. It will be apparent from the above example that the permutations of D.A. blocks that can be configured within a system is limited only by the number of MSR-604iis that are connected in the rack. -
Page 16: Installing Pre-Mkii Msr-604Iis In A New System
The new units should be mounted at the top of the rack, away from the MSR-602 power supply. If more than one MSR-604ii is being installed, the LOOP IN/LOOP OUT connectors are ‘daisy’ chained’ together as described in section 3.5; DC Power connections. -
Page 17: Appendix A
BSS Audio MSR-604ii User Manual version v1.4 8 Appendix A .1 Circuit description The DC supply regulator circuits (not shown) are common to all channels. The rails to each channel are protected by fusible resistors so that in the event of a short circuit fault in one channel the other three are not affected. -
Page 18: Service Section
.3 Output transformer balancing Provision has been made within the MSR-604ii to fit 600 ohm transformers to the ‘main’ and ‘mon’ outputs to provide floating and isolated outputs. Please order as ‘MSR-604ii balanced output transformer kit Z-MSRTX0II-01’. This is per channel with four required for one MSR-604ii unit. -
Page 19: Warranty Information
MSR-604ii User Manual version v1.4 10 Warranty Information When sold to an end user by BSS Audio or a BSS Audio Authorised Reseller, this unit is warranted by the seller to the purchaser against defects in workmanship and the materials used in its manufacture for a period of one year from the date of sale. -
Page 20: Specifications
BSS Audio MSR-604ii User Manual version v1.4 11 Specifications MSR-604ii Channels Four: Independent or internally interconnected Inputs XLR-3F Electronically balanced (Transformers optional) Microphone Line Impedance Max. input level +13dBu +33dBu CMRR >90dB @ 1kHz >75dB 50Hz to 10kHz Phantom Power 48VDC via panel switch and LED indicator Outputs Main (FOH) &... - Page 21 BSS Audio MSR-604ii User Manual version v1.4 Frequency Response <+/-0.5dB 20Hz to 20kHz Noise (E.I.N.) (20Hz to 20kHz) -10dB gain <-114dBu 0dB gain <-121dBu 10dB gain <-124dBu 20dB gain <-125dBu 30dB gain <-126dBu Distortion (T.H.D) <0.01% 20Hz to 20kHz @ 10dB below clip Level Metering &...
- Page 22 Headroom >MSR-604ii channel clip Weight 7.0 kg Net Size 1.75" x 19" x 11.6" (44 x 482 x 293mm) excluding connectors In keeping with our policy of continued improvement, BSS Audio reserve the right to alter specifications without prior notice. Page 22 interstage...
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