Table of Contents
Advertisement
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for LA Audio MS1224
Summary of Contents for LA Audio MS1224
- Page 1 Active Mic Splitter Operation Manual August ‘04...
- Page 2 This page has been left intentionally blank for your notes Page 2...
-
Page 3: Table Of Contents
CONTENTS OVERVIEW TECHNICAL SPECIFICATION INSTALLATION Inspection and unpacking Operating Environment CE Standard and LVD Power Requirement Warranty DESCRIPTION OF CONTROLS Phantom +48V indicator Listen EXTERNAL CONNECTIONS 9-14 Input Link Output A, B, C and D Power In Power Out Signal Levels Multiway Connector Option Input-Output Options Grounding Output D... -
Page 4: Overview 4
It also provides user protection against sudden loud signals. A unique design feature of the MS1224 is the option to configure the way that Input and Output connectors are presented on the front and rear of the unit. As each customer has their own views on this we have given the flexibility of presenting the Input and two Outputs on the front and three Outputs on the rear, or vice-versa. -
Page 5: Technical Specification 5
TECHNICAL SPECIFICATIONS MS1224 ACTIVE MIC SPLITTER ELECTRICAL Frequency Response: 20Hz to 20kHz, +0, -0.5dB Equivalent Input Noise: -122dBu, 20Hz to 20kHz THD + Noise: < 0.01% Input Impedance: Maximum Input Level: 0dBu (+20dBU with Pad) Output Impedance: < 15R Load Impedance: >... -
Page 6: Installation
See Section 6.3, concerning power requirements for the MS1224 Power Supply. POWER REQUIREMENTS The MS1224 Active Mic Splitter is designed to work from low voltage DC supplies only. The MS1224 Power Supply provides Phantom power (+48V) and Audio supplies of +17V and -17V - see Section 6.0. - Page 7 discretion replace, any defective item without charge for labour or parts. To receive service under this warranty it is necessary to return the unit to an LA Audio authorised service centre or to the factory with a dated receipt as proof of purchase.
-
Page 8: Description Of Controls
This led lights whenever a voltage i.e. phantom power is present at the Input connector. The Phantom Power source detected can be either internal (via MS1224 Power Supply) or external (via for example a FOH console). PAD switch This switch inserts a 20dB pad into the signal path. To be used when line level signals are connected to the MS1224. -
Page 9: External Connections
(Option C) - see Section 5.6. OUTPUT A, B, C and D All outputs on the MS1224 are transformer balanced on 2 pin XLR-M connectors with pin 2 wired hot (signal +). Either pin 2 or pin 3 can be connected to pin 1 via the external cable to provide an unbalanced feed. -
Page 10: Power In
Active Mic Splitters to a common power supply. SIGNAL LEVELS The Input to Output gain on the MS1224 is 0dB i.e. unity. Maximum input signal level will depend on the setting of the PAD switch. The 0dB position (switch up) is for microphone levels and maximum input level is 0dBu i.e. - Page 11 The following diagram shows two wiring examples when using 56 way EDAC connectors. INPUT-LINK-OUTPUT OPTIONS A, B, C and D A unique feature of the MS1224 is the ability to re-configure the Input-Output panels - Option A: INPUT, LINK and OUTPUT D are on the front of unit and...
- Page 12 Coverting from option A to Option B: Remove the top cover – 8 x M3 countersunk screws. Remove chassis – 8 x Hex Button screws (2mm AF Allen Key required) and 4 x M3 x 6 countersunk screws on base. Disconnect the 10 way ribbon cable connector from each of the channel boards (J4).
- Page 13 Option C - front view Option C - rear view Referring to the Channel board diagram – Remove the 3 x jumper links fitted to LK1 and LK2 Remove the 3 x jumper links fitted to LK3 and LK4 Channel board link positions for Option C and D Fit a 3 way, 16cm cable assembly (Order No.
-
Page 14: Grounding Output D
Re-connect 4 way power cable to rear of Switch panel. Re-fit cover – 8 x M3 countersunk screws. GROUNDING OUTPUT D Referring to the above diagram the shorting link on P11 can be used to ground pin 1 on OUT D. Please note: Ex-works default is with OUTPUT D ground lifted. -
Page 15: Power Supply Unit
6.0 POWER SUPPLY UNIT The MS1224 Power Supply unit houses the INPUT and OUTPUT ground lift switches, DC power supplies and monitoring section. Each Power Supply can power up to four MS1224 Mic Splitter racks i.e. 48 channels. DESCRIPTION OF FRONT PANEL INPUTS Ground lift switch and fuse, common to all INPUTs. -
Page 16: External Connections
36 way Centronics style connector for connecting to MS1224 Mic Splitter units. Please note: If using cables other than those supplied with the MS1224 Active Mic Splitter ensure that all pins are connected and that it is wired pin 1 to pin 1 etc. -
Page 17: Power Requirements
Standard 20mm fuse connected in series with the incoming mains supply - see Section 3.5. POWER REQUIREMENTS The MS1224 Power Supply is factory configured for either 230V 50Hz ac or 115V 60Hz ac mains operation. Please refer to the following diagram which shows the transformer connections for 230V and 115V –... -
Page 18: Dimensions
7.0 DIMENSIONS Page 18...
Need help?
Do you have a question about the MS1224 and is the answer not in the manual?
Questions and answers