Martin Audio MA4.8Q User Manual Download Page 1 | Manualshive

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The Martin Experience

MA6.8Q & MA4.8Q

User’s Guide

All material © 2007. Martin Audio Ltd. Subject to change without notice.

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Summary of Contents for MA4.8Q

Page 1: ...The Martin Experience MA6 8Q MA4 8Q User s Guide All material 2007 Martin Audio Ltd Subject to change without notice ...

Page 2: ...2 5 NomadLink Ethernet control and monitoring network 7 5 installation 8 5 1 Unpacking 8 5 2 Mounting 8 5 3 Cooling 8 5 4 Operating voltage 8 5 5 Grounding 9 6 quick guide overview 10 6 1 Front Panel overview 10 6 1 1 Power on off and remote switch 10 6 1 2 Front Panel LED s 10 6 2 Rear Panel overview 11 6 2 1 The DIP switch features 11 6 3 NomadLink Ethernet network setup 12 7 operation and perfo...

Page 3: ...hort circuit 19 7 5 7 Temperature protection 20 7 5 8 Power Average Limiter PAL 20 7 5 9 Soft Start 20 7 6 Front panel monitoring and adjustments 21 7 6 1 Level indicators 21 7 6 2 Level adjust 21 7 6 3 Mute indication 21 7 6 4 Performance Warning and Fault indicators 22 7 7 NomadLink network and PC editor 23 7 7 1 NomadLink network in the amplifiers 23 7 7 2 Connection and setup 23 7 7 3 NomadLin...

Page 4: ...let Connect only to AC power outlets rated 100 120 V or 200 240 V 50 60 Hz Do not use this amplifier if the power cord is broken or frayed Protect the power cord from being walked upon or pinched particularly at the plugs and the point where it exits from the apparatus Only use accessories specified by the manufacturer The unit is intended to use in a 19 rack Follow the mounting instructions When ...

Page 5: ...s encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the antenna 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 Check if the affected unit complies with the EMC limits for immunity CE labeled If not address the problem with the...

Page 6: ...t voltage 70 V 100 V mode NomadLink an easy to use network for monitoring and control is implemented as a standard feature on all Q Series amplifiers Although Q Seriesfeatures and facilities are tailored to installation applications at the heart of each amplifieristhesameadvancedtechnologythathasmade Martin Audio the benchmark of quality for touring concert systems exceptional sonic performance ru...

Page 7: ...er is short circuiting the output High impedance warning reports an alert when at the same time output signal is high simultane ously and no current draw is measured This situation might occur when no speakers are connected or when a driver is blown Low inrush current ensures that the mains breaker will not trip when several power amplifiers are turned on simultaneously 4 2 5 NomadLink Ethernet co...

Page 8: ...aust to escape If the amplifier is rack mounted do not use covers or doors on the front or rear of the rack Should a heat sink overheat the temperature sensing circuits will mute the overheating channel If the power supply overheats another sensing circuit will mute all output channels until the power supply cools to safe operating temperature An early warning before shut down will be indicated on...

Page 9: ... during soft start enabling multiple amplifiers to be powered up simultaneously 5 5 Grounding There is no ground lift switch or terminal on the Q Series amplifiers The signal ground is always floating via a resistor to chassis and therefore the grounding system is automatic In the interests of safety never disconnect the earth ground pin on the AC power cord Use balanced input connections to avoid...

Page 10: ...not switch on until a Power On command is received from the network When the remote switch is off it is not possible to switch amplifier power on or off using NomadLink network control 6 1 front panel LEd s The front panel LED area includes the following indicators per channel Temperature warning Yellow flashing Temperature mute Yellow constant Very High Frequency protection active output muted Ye...

Page 11: ...lligent fan feature lowers fan speed when no signal is present VPL Voltage Peak Limiter adjustment is provided for 8 individual levels Select the setting most appropriate for connected speakers See Appendix for details Mode Select VPL mode between Hard and Soft For channels driving sub woofers and Lo end frequen cies it is recommended to use the Hard setting for optimal operation For mid and hi en...

Page 12: ... National Differences cl 16 3 requires that NomadLink network cables must be rated VW 1 The OUT port from the NLB 60E must be connected to the IN port of the first amplifier The OUT port from the first amplifier in turn connects to the next amplifier s IN port to form a daisy chain The OUT port on the last amplifier is connected to the IN port on the NLB 60E to close the loop There are electrical ...

Page 13: ... Q Series Operation Manual 13 All material 2007 Martin Audio Ltd Subject to change without notice ...

Page 14: ...t gain is adjusted using the input stage DIP switches Please note that the gain setting is global affecting all four channels Following the input stage the dedicated level control on each channel allows signal attenuation from 0 dB to minus infinity The Current Peak Limiter CPL section dynamically limits the input signal based on three parameters sensed current level feedback from the output stage...

Page 15: ... audio com The headroom available through the input stage to the clip limiter is shown by the dotted lines as 10 dB at 141 Vpeak and 20 4 dB at 42 Vpeak These lines illustrate the additional signal level that can be accepted at the input before any significant distortion will appear at the input stage Gain set to DIP switches 44 dB 41 dB 38 dB 35 dB 32 dB 29 dB 26 dB 23 dB Voltage Peak Limiter set...

Page 16: ... the same source signal to several input channels be aware that there is a limit to the number of channels an output source can 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 7 4 2 Output operation and connection Screw terminal connectors with and poles are provided at each channel output for co...

Page 17: ...red to 0 775 Vrms are required to achieve full maximum output power As the output power varies with the load impedance 4 ohms is usually the common reference Since Q Series amplifiers are capable of providing multiple maximum output power levels through use of the VPL feature many sensitivity calculations may be required for a single amplifier We recom mend use of the DeviceControl editor to simpl...

Page 18: ...detection of short circuit or low impedance conditions If the CPL LED is steadily illuminated orange while the output is muted and the 4 dB signal LED is NOT on then the amplifier output is detecting a short circuit or low impedance condition The problem can be solved by checking input and output cables and examining the state of the loudspeaker load If there is no short circuit present then the c...

Page 19: ...re maximum output power is attained To measure the true peak output power use a burst signal 7 5 4 DC protection DC protection is implemented on each output to prevent damage to connected loudspeakers DC present at the output will trigger muting and illuminate the fault LED indicator Any DC present at the output indicates a hardware malfunction that requires servicing of the amplifier 7 5 5 Hi imp...

Page 20: ...when the channel or power supply returns to a safe operating temperature 7 5 8 Power Average Limiter PAL The Power Average Limiter PAL controls the current drawing relationship between the power supply and the mains inlet PAL limits the maximum average power consumption according to the power supply capabilities ensuring that the PSU will not overload In addition in the larger models that potentia...

Page 21: ...detailed signal level indications use the DeviceControl editor application 1 2 3 4 5 8 6 2 Level adjust Step Attenuation 1 Min Inf dB 2 Inf dB 3 50 dB 4 40 dB 5 35 dB 6 21 5 dB 7 21 5 dB 8 14 7 dB 9 12 9 dB 10 11 4 dB 11 10 0 dB 12 8 7 dB 13 7 4 dB 14 6 0 dB 15 4 5 dB 16 2 7 dB 17 0 6 dB 18 0 3 dB 19 0 1 dB 20 0 dB 21 Max 0 dB Level adjust potentiometers one per channel are located behind the remo...

Page 22: ... impedance This will continue until the short circuit is removed CPL remains constant orange in a fault condition only when an input signal is present Temperature yellow warning is indicated by a flashing LED If the amplifier goes into thermal protect output muted the LED illuminates constant yellow VHF Very High Frequency protection yellow indicates that potentially harmful continuous high freque...

Page 23: ...be inadvertently disconnected from the mains OPERATION AND PERFORMANCE 7 network integrity is fully maintained and all amplifiers remain visible on the system 7 7 2 Connection and setup The NomadLink network requires use of a NLB 60E The NomadLink network is established by connecting the NLB 60E OUT port to the first amplifier s IN port Then a daisy chain is established by connecting the first amp...

Page 24: ...Ethernet Cat5 Ethernet Cat5 Ethernet Cat5 NLB 60E IN OUT 300m 980ft 300m 980ft 100m 328ft total cable length for links in between amplifiers 300m 980ft Amp 1 IN OUT Amp 60 IN OUT Example 1a Daisy chain total cable length max 400m 1300ft E g all amplifiers in one location or close to each other NLB 60E in a different location Amp 2 IN OUT Amp 3 IN OUT 300m 980ft Amp 4 IN OUT Amp 60 IN OUT Example 2...

Page 25: ...ontrol editor is a proprietary software application for monitoring and controlling networked Q Seriespower amplifiers DeviceControl runs on a Windows PC which connects via Ethernet to the NLB 60E network bridge DeviceControl provides comprehensive monitoring of amplifier status as well as control of amplifier power on off and individual channel mute and solo functions Please review the DeviceContr...

Page 26: ...oop daisy chained subnet the maximum cable length is 400 meters 1300 feet In a closed loop subnet the maximum cable length is 700 meters 2300 feet Exceeding these limits may result in lost contact with the devices or loss of phantom powering due to cable resistance Q How long can cable runs be on the Ethernet network connecting the NLB 60E to the PC A On the Ethernet side normal Ethernet cable lim...

Page 27: ...is Operation Manual please email us via www martin audio com where you can find a multitude of additional documentation for Q Series Drawings technical data sheets tables with input sensitivity background technology briefs and much more APPENDIX 8 All material 2007 Martin Audio Ltd Subject to change without notice ...

Page 28: ...se 12 dB crest factor 16 0 8 0 1123 600 523 1784 2484 626 21 2 10 6 1378 600 778 2655 669 570 Max power 3 Pink noise 6dB crest factor 35 2 17 6 2296 1200 1096 3740 942 1005 3429 864 16 A CEE7 35 4 17 7 2605 1600 115VAC 230VAC In Out Dissipated BTU hr kCal hr 0 0 0 0 0 123 0 123 420 106 8 Ω Ch 1000 x4 4 Ω Ch 1200 x4 2 Ω Ch 600 x4 100V Ch 900 x4 8 Ω Ch 1000 x4 4 Ω Ch 1200 x4 4 Ω Ch 600 x4 100V Ch 90...

Page 29: ...200 W 600 W Hi Z 70V 100V per ch 1600 W 900 W Mains connector 230V CE version 16A CEE7 16A CEE7 Mains connector 115V ETL version 20 A 5 20P 20 A 5 20P Maximum mains current consumption 230V version 11 2 A 8 7 A Maximum mains current consumption 115V version 22 4 A 17 4 A PALTM reduces the maximum output power keeping the power supply in safe operating area and or preventing excessive current draw ...

Page 30: ...ors per ch Barrier strip 2 pole screw terminals NomadLink network On board 2 x RJ45 EtherCon connectors IN and OUT Intelligent fans on off Depending on presence of output signal Power on off and Remote enable on off Individual switches on front panel Cooling Two fans front to back airflow temperature controlled speed Front panel indicators Common NomadLink Network Power Average Limiter PAL 2 Power...

Page 31: ... for any loss due to cancellation of any events or rent of replace ment equipment or costs due to a third party s or customer s loss of profit or any other indirect cost or losses however incurred Martin Audio reserves the right to make changes or improvements in design or manufacturing without assuming any obligation to change or improve products previously manufactured This warranty is exclusive...

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