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OVERVIEW:
4-Channel Power Amplifier for Portable and Permanently Installed Applications
700 W at 4 from each of four channels with bridgeable pairs: a single M28Q is good for powering a complete little bi-amped stereo system, a 3-way mono stack of decent size, a variety of floor monitors.
All at a quality level as can be expected from Powersoft. Optimized for 4 loads, the M28Q is a fantastic value, practically as well as commercially.
In use worldwide by leading touring and event sound companies, Powersoft amplifiers are preferred among the top ranking system designers, sound engineers, and contractors for providing reliable premier-grade power and headroom in the smallest possible package size.
Maximum efficiency warrants minimum current draw, heat dissipation and power consumption, resulting in “green” products, saving the user a substantial amount of money over time.
The M28Q HDSP+ETH version provides on-board DSP and Ethernet interfaces.
The high-performance DSP is hidden inside and safe against accidental or intentional tampering; monitoring and amplifier settings can be done via Armona Pro Audio Suite (Interface available for MediaMatrix, Crestron, AMX, Q-SYS control and monitoring systems).
Locally, the M28Q HDSP+ETH lets the user access up to four presets per pushbutton on the rear panel.
FEATURES;Power supplyAdvanced switch-mode power supply technology for high performance and compact sizeFixed frequency switch mode outputPatented output filter with ripple cancellation networkProtectionsFully protected circuit design with:Ac protection: shut down power supply when AC mains voltage is outside operating rangeClip limiter: prevents severely clipped waveforms from reaching loudspeakers, while still maintaining full peak power outputDC protection: protects against infrasonic signal at the outputsVHF protections: protects the loudspeakers against non audible, strong, non musical high frequency signalsShort circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits with automatic protection resetLong term limiter: protects the loudspeaker against steady long term rms (non audio) signals reducing maximum outputThermal protection: output stages operating temperature up to 75 C (167 F)Temperature controlled continous variable speed fan, front to back airflowDigital Signal Processing*Analog Devices ADAU 1701 DSP architecture24 bit @ 48 kHz, 120 dB S/N AD/DA convertersSeparate input/output EQ’s with numerous filters of various types up to 48 dB/octPeak, RMS, and frequency dependent limitersDelay for time alignmentGeneralDirect drive constant voltage, 70V Hi-Z distributed lines**Compact size – all models only 1 RU for reduced rack cost and spaceLight weight – all models only 7.4 kg (16.3 pounds) for easier racking and shippingNeutrik XLR balanced inputs with loop thru XLR and Speakon outputs connectorsRecessed stepped attenuatorsModular constructionRemote management*Control and monitoring through Armona Pro Audio SuiteInterface available for MediaMatrix, Crestron, AMX, Q-SYS control and monitoring systems* = HDSP+ETH version only.** = HDSP+ETH version with HPF and output voltage limiter preset / external HPF and output voltage limiter required with no-HDSP+ETH version.
SPECIFICITIES:GeneralNumber of channels: 4Output powerSingle channel mode: 4 : 700 W8 : 360 WMax output voltage / current: 85 Vpeak: / 60 ApeakBridge mode: 8 : 1400 WMax output voltage / current: 170 VpeakAC Main PowerPower supply: Universal, regulated switch modeNominal power requirement: 100-240 V 10%, 50-60 HzOperating voltage: 90 V – 264 VPower consuption**115 V: Idle: 64 W – 0.6 A1/8 of max output power @ 4 : 580 W – 7.48 A1/4 of max output power @ 4 : 1066 W – 13.04 A230 V: Idle: 64 W – 0.51 A1/8 of max output power @ 4 : 580 W – 3.74 A1/4 of max output power @ 4 : 1066 W – 6.52 AThermalOperating temperature range: 0 – 45 C – 32 – 113 FThermal dissipation**115 V: Idle: 212 BTU/h – 53.4 kcal/h1/8 of max output power @ 4 : 785 BTU/h – 197.8 kcal/h1/4 of max output power @ 4 : 1249 BTU/h – 314.7 kcal/h230 V: Idle: 212 BTU/h – 53.4 kcal/h1/8 of max output power @ 4 : 785 BTU/h – 197.8 kcal/h1/4 of max output power @ 4 : 1249 BTU/h – 314.7 kcal/hAUDIOGain: 32dB, 30dB, 28dB, 26dB, 24dB, 22dB, 20dB, 18dB, 14dB, 4dB, -infinity, user selectableInput sensitivity: 1.94 V / 8 dBuMax input level: 6 V / 17.8 dBuFrequency response: 20 Hz – 20 kHz (0.5 dB) @ 1 W, 8 S/N ratio: > 110 dB (20 Hz – 20 kHz, A weighted)Crosstalk separation: > 70 dB @ 1kHzTHD+N: < 0.05% @ 1/2 full powerIMD: < 0.02%Input impedance: 10 k balancedSlew rate: 50 V/mus @ 8, input filter bypassedDamping factor: > 5000 @ 100 HzDSPDSP architecture: Analog Devices ADAU 1701 DSPAD Converter: Cirrus Logic CS 5381, 2 channel, 24 bit @ 48 kHz, 120 dB S/NDA Converter: Cirrus Logic CS 4398, 2 channel, 24 bit @ 48 kHz, 120 dB S/NInternal precision: Fixed pointFirmware: Network upgradable firmwareLatency: 0.644 ms fixed latency architectureInput equalizer: up to 5 biquad IIR filters (PEQ, shelving, band pass, band stop, all pass)Output equalizer: up to 12 fully parametric per channelCrossover: Butterworth, Linkwitz-Riley, Bessel: 6 dB/oct to 48 dB/octDelay: 340 ms input delay plus 10 ms per outputLimiters: Peak limiter, RMS limiter, frequency dependent RMS limiterDamping control: < 120 Hz, range 2 Front panelIndicators and Controllers: 2 x LED - Status2 x LED - Over-temperature protection4 x LED bar - Signal level and over-temperature protection4 x Knob - Level attenuator (stepped)1 x Power switch -ConnectorsAC main: 1 x IEC C14 connector - 15 A max (region-specific power cord provided)Audio signal input: 4 x XLR - Signal inputAuxiliary voltage: 1 x 2 pin Phoenix MC 1.5/2-ST-3.81 - External voltage connector (DSP version only)Loudspeakers: 4 x speakON - Neutrik NL4MDNetwork/data: 1 x Rj45 socket - RS485 data connection (non-DSP version)Rear panelIndicators and Controllers: 1 x Push-button - Link channel pairConstructionDimensions (L x H x W): 483 mm x 44.45 mm x 358 mm (19.0 in x 1.8 in x 14.1 in)Weight: 7.4 kg (16.3 lb)
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Category: Musical Instruments:Pro Audio:Amplifiers
Location: Greystanes, New South Wales