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Martin Audio Manuals
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MA4.8Q
User manual
Martin Audio MA4.8Q User Manual
Q series power amplifiers
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Technical specification
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Contents
Table of Contents
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Table of Contents
Table of Contents
1 Contents
2 Approvals
3 Warnings
Explanation of Graphical Symbols
Warning
Caution
Important Safety Instructions
User Responsibility
Mains Connection Grounding
Speaker Output Hazard
Radio Interference
Speaker Damage
Maintenance
4 Welcome
Introduction
Main Features
Class TD Amplifier and Regulated Switch-Mode Power Supply
Amplifier Gain
Voltage Peak Limiter
Protection and Performance Optimization
Nomadlink / Ethernet Control and Monitoring Network
5 Installation
Unpacking
Mounting
Cooling
Operating Voltage
Grounding
6 Quick Guide OVERVIEW
Front Panel Overview
Power On/Off and Remote Switch
Front Panel Led's
Rear Panel Overview
The DIP Switch Features
Nomadlink / Ethernet Network Setup
7 OPERATION and Performance
Introduction
Operation Precautions
Signal Flow and Headroom
Signal Flow Blocks
Headroom, Sensitivity and VPL / Gain Settings
Audio Input and Output Connections, Setup and Features
Balanced / Unbalanced Input Connection
Output Operation and Connection
Amplifier Gain
Channel Gain/Level (Front Panel Pots)
Amplifier Sensitivity
Output Voltage Peak Limiter (VPL)
Constant Voltage 70 V and 100 V Systems Setup and Operation
Current Peak Limiter, (CPL)
Protection, Faults and Warnings
Introduction
Safe Operating Area Detector (SOAD)
Very High Frequency Protection
DC Protection
Hi Impedance Warning (Open Load)
Lo Impedance Protection (Short Circuit)
Temperature Protection
Power Average Limiter (PAL)
Soft Start
Front Panel Monitoring and Adjustments
Level Indicators
Level Adjust
Mute Indication
Performance, Warning and Fault Indicators
Nomadlink Network and PC Editor
Nomadlink Network in the Amplifiers
Connection and Setup
Nomadlink Network Cable Lengths
Ethernet Network Cable Lengths
Devicecontrol Editor
8 Appendix
Maintenance
Faq
Bench Test the Amplifier
Additional Documentation
BTU Specifications
9 Technical Specifications 9
10 Warranty
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MA6.8Q & MA4.8Q
User's Guide
The Martin Experience
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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Summary of Contents for Martin Audio MA4.8Q
Page 1
MA6.8Q & MA4.8Q User’s Guide The Martin Experience All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 2: Table Of Contents
7.3.2 Headroom, sensitivity and VPL / Gain settings ..............15 Audio Input and Output connections, setup and features ..............16 7.4.1 Balanced / Unbalanced Input connection ................16 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 3
8.2 FAQ ..............................26 8.3 Bench test the amplifier ........................26 8.4 Additional documentation ........................27 8.5 BTU specifications ..........................28 9 TEChNICAL SPECIfICATIONS ........................30 10 WARRANTY ..............................3 Q Series Operation Manual 3 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 4: Approvals
20. The US National Differencescl.16.3 requires that NomadLinknetwork cables must be flame rated VW-1. 4 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 5: User Responsibility
Increase the separation between the equipment and receiver. Connect the equipmnt into an outlet on a • circuit different from that to which the receiver is connected. Q Series Operation Manual 5 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 6: Welcome
Q Series amplifiers. For example, if the input signal is weak, the gain can be boosted to maintain maximum power output while 6 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 7: Voltage Peak Limiter
Mute and Solo functions on individual channels. input signal is present and a malfunctioning cable or driver is short circuiting the output. Q Series Operation Manual 7 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 8: Installation
Once a suitable AC supply is connected, the doors on the front or rear of the rack. 8 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 9: Grounding
In the interests of safety, never disconnect the earth (ground) pin on the AC power cord. Use balanced input connections to avoid hum and interference. Q Series Operation Manual 9 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 10: Quick Guide Overview
NomadLink The front panel LED area includes the following receives phantom power from the network indicators per channel: supplied by the NLB 60E. 10 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 11: Rear Panel Overview
Lo-end frequen- cies, it is recommended to use the Hard setting for optimal operation. For mid and hi-end drivers, always select Soft. Q Series Operation Manual 11 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 12: Nomadlink / Ethernet Network Setup
If bridge is connected to switch of HUB, use " straight " cable. IN OUT PC can also be connected on front-panel. NOMADLINK " Straight " RJ45 cables between bridge and amplifiers. IN OUT NOMADLINK 1 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 13
Q Series Operation Manual 13 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 14: Operation And Performance
Gain select switches Front panel Gain reduction potentiometer Class TD Hard/Soft switch Control Mute Voltage Clip sensing Monitoring Level Temperature Current clip sensing Fault/Warning 14 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 15: Headroom, Sensitivity And Vpl / Gain Settings
5,7 / 1,5 + 23 dB 8,7 / 2,1 *) Headrom limited to +8dB at Gain set to +23 dB at Max. VPL Q Series Operation Manual 15 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 16: Audio Input And Output Connections, Setup And Features
“drive”. A typical output source (e.g. a DSP crossover unit) can drive up to 4 amplifier channels before line-drivers would be required to buffer the signal. 16 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 17: Amplifier Gain
(maximum) output power. As the output power delivering excessively high continuous power to the varies with the load impedance, 4 ohms is usually Q Series Operation Manual 17 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 18: Constant Voltage 70 V And 100 V Systems Setup And Operation
This feature recognizes that continuous full-scale VHF If the CPL LED is steadily illuminated orange 18 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 19: Dc Protection
If you bench test the amplifier using a continuous, full scale sine-wave input above 10 kHz, the VHF protection will activate and Q Series Operation Manual 19 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 20: Temperature Protection
Such is not the case with Q Series amplifiers. The Q Series amplifiers have very low inrush power as the capacitors are charged slowly 0 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 21: Front Panel Monitoring And Adjustments
LEDs at the top of the channel’s LED bargraph. Mute/Un-mute can only be performed from the network using either the NLB 60E and/or the DeviceControl PC editor. Q Series Operation Manual 1 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 22: Performance, Warning And Fault Indicators
CPL • and VHF indicators light up simultaneously. The amplifier requires servicing before placing back in operation. Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 23: Nomadlink Network And Pc Editor
The network is solely powered from the NLB 60E. Should an amplifier fail or be inadvertently disconnected from the mains, Q Series Operation Manual 3 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 24: Nomadlink Network Cable Lengths
Ethernet / Cat5 Ethernet / Cat5 Amp. #60 Amp. #60 Amp. #3 Amp. #3 Amp. #2 Amp. #2 Amp. #1 Amp. #1 <300m/980ft <300m/980ft 4 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 25: Ethernet Network Cable Lengths
Please review the DeviceControl user manual for more detailed information. Q Series Operation Manual 5 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 26: Appendix
400 meters / 1300 feet. In a closed-loop subnet the maximum cable • length is 700 meters / 2300 feet. 6 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 27: Additional Documentation
Q Series: Drawings, technical data sheets, tables with input sensitivity, background technology briefs and much more. Q Series Operation Manual 7 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 28: Btu Specifications
Note that the max. power condition is very extreme and will never occour during normal operation. Also note that the mains breaker will not be tripped even it's in excess of max. ratings. 8 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 29
Single channel operation at 2 ohms and bridged mode at 4 ohms are not recommended. Separate 230 V or 115 V versions available. Not selectable on the amplifier. 30 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 30: Technical Specifications 9
W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”) Weight 12 kg (26.4 lbs.) finish Black painted steel chassis with gray painted steel front Approvals CE 230V, ETL 115V/230V, FCC Q Series Operation Manual 31 All material © 2007. Martin Audio Ltd. Subject to change without notice.
Page 31: Warranty
International warranties Please contact your supplier or distributor for this information, as rights and disclaimers may vary from country to country. 3 Q Series Operation Manual All material © 2007. Martin Audio Ltd. Subject to change without notice.
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