Instruction/ maintenance manual of the product SCM410 Shure
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SCM410/SCM410E FOUR CHANNEL AUT OMA TIC MICROPHONE MIXER Shure Brothers Incorporated 222 Hartrey Avenue Evanston IL 60202-3696 U.S.A. Model SCM410/SCM410E User Guide 27A8690 (SG) 1999, Shure Brothers Incorporated Printed in U.
2 T ABLE OF CONTENTS DESCRIPTION 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FEA TURES 3 . . . . . . . . .
3 DESCRIPTION The Shure Model SCM410/E is a four-channel automatic mi- crophone mixer designed for use in sound reinforcement, au- dio recording, and broadcast applications. The SCM410 dra- matically improves audio quality in any application where mul- tiple microphones are required.
4 REAR P ANEL MODEL SCM410 REAR P ANEL FIGURE 2 1. Power Connector: Unit is energized when the power cord is plugged into a 100–120 V ac (SCM410) or 220–240 V ac (SCM410E) power source. Can be internally modified.Refer to the “Internal Modification” section.
5 INST ALLA TION SUPPLIED HARDW ARE 4 rubber feet 1 rackmount bracket, long 1 rackmount bracket, short 2 straddle brackets 10 bracket screws, 6 mm (1/4 in.) 4 rackmount screws, 2.54 cm (1 in.) 4 plastic washers 4 wood screws, 1.
6 T ABLE-TOP MOUNTING Adhere the four (4) supplied rubber feet to the bottom of the mixer at each corner , as shown in Figure 9. This will keep it from sliding and protect the table surface. A TT ACHING RUBBER FEET FOR T ABLE–TOP MOUNTING FIGURE 9 FIXED MOUNTING T op Mount 1.
7 SCM410 CONNECTIONS 1. Connect microphone signal sources to the Channel Input connectors, as shown in Figure 14. Use conventional 2-con- ductor shielded audio cables. 2. I f any condenser microphones are connected, set the +12V phantom power DIP switch to ON.
8 BASIC MIXER OPERA TION 1. Adjust each channel level so that its Overload LED flickers only during very loud speech or noise. 2. Adjust the Low-Cut and High-Frequency controls adjacent to each Input Gain control so that the microphones sound similar .
9 SPECIFICA TIONS Measurement Conditions (unless otherwise specified): Line voltage 120 V ac, 60 Hz (SCM410) or 230 V ac, 50 Hz (SCM410E); full gain; 1 kHz, one channel activated; source impedances: M.
10 Replacement Parts Knob, Master (white) 95A8238 . . . . . . . . . . . . . . . . . . . . . . . Knob, Channel Gain (blue) 95B8238 . . . . . . . . . . . . . . . . . Line (Power) Cord (SCM410) 95A8762 . . . . . . . . . . . . . . . Line (Power) Cord (SCM410E) 95A8778 .
11 ADV ANCED FUNCTIONS CAUTION : Use of Advanced Functions is recommended only for qualified audio technicians. LOGIC CONNECTION SPECIFICA TIONS The SCM410 logic functions expand the range of installation an d control options. Logic can be used for everything from sim- ple cough switches to elaborate computer-controlled room systems.
12 SUGGESTED LOGIC APPLICA TIONS This section contains suggestions on the uses of the SCM410’s logic capabilities. Note that uses of these functions ar e not limited to the listed applications. The user is limited only by imagination and creativity .
13 Inhibiting Gating for Unwanted Sounds MaxBus attempts to activate only one microphone per sound source. Muting a microphone channel prevents its audio from appearing at the mixer ’ s output. However , the muted micro- phone still communicates with other mic channels via Max- Bus.
14 Inhibit Function For information on the inhibit function, refer to the Internal Modifications section. Remote V olume Control Th e level of the Aux or Master output can be controlled from an external VCA (V oltage Controlled Amplifier) such as the RU- VCA1 from Radio Design Labs (T el.
15 INTERNAL MODIFICA TIONS W ARNING: V oltages in this equipment are hazardous to life. No user-serviceable parts inside. Refer all servicing to qualified service personnel. NOTE: • Only make changes to jumpers (X) and resistors (R). The circuit board contains holes where resistors are to be added.
16 INSERTING AN INPUT LINE P AD T o insert a 40 dB line pad for a given microphone input, remove the resistors specified in the following table. Channel Remove Resistor 1 R1005, R1006 2 R2005, R2006 3 R3005, R3006 4 R4005, R4006 DISABLING THE MASTER LEVEL CONTROL Th e Master gain control can be disabled to prevent tampering.
17 When both MUTE IN and OVERRIDE IN logic are grounded, the Override mode will take precedence (as supplied, the MUTE IN takes precedence over OVERRIDE IN).
18 This modification is equivalent to shorting one of the channel OVERRIDE IN t o the LOGIC GROUND pin via the high density DB-15 logic connector . With this modification, a channel is al- ways on.
An important point after buying a device Shure SCM410 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Shure SCM410 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Shure SCM410 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Shure SCM410 you will learn all the available features of the product, as well as information on its operation. The information that you get Shure SCM410 will certainly help you make a decision on the purchase.
If you already are a holder of Shure SCM410, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Shure SCM410.
However, one of the most important roles played by the user manual is to help in solving problems with Shure SCM410. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Shure SCM410 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
