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Void Acoustics

Q1.5+ 4-channel amplifier, 800 W into 2 Ω, 1 rack unit, compatible with Lo-Z loads and 70/100 V distributed lines.

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The Bias Q1.5+ offers the ideal balance between compact size, available power, and impeccable audio quality, positioning itself between the Q1+ and Q2+ within the Bias range. With a power output of 800 W per channel at 2 Ω, this amplifier is perfect for driving loudspeakers such as the Air 8, Airten V3, and other compact full-range solutions.

Thanks to its li... Read more

The Bias Q1.5+ offers the ideal balance between compact size, available power, and impeccable audio quality, positioning itself between the Q1+ and Q2+ within the Bias range. With a power output of 800 W per channel at 2 Ω, this amplifier is perfect for driving loudspeakers such as the Air 8, Airten V3, and other compact full-range solutions.

Thanks to its lightweight and compact design in just 1 RU, the Q1.5+ is extremely versatile for both fixed and mobile installations, always ensuring precise and reliable sonic performance. Its highly efficient power supply, with microprocessor control and active Power Factor Correction (PFC), guarantees stable operation across all global mains voltages.

The patented Smart Rails Management™ (SRM) technology dynamically optimizes power consumption, while compatibility with both low-impedance loads (2 Ω) and 70/100 V distributed lines makes it an ideal choice for hybrid systems. The DSP+ version also includes support for AES67 digital audio networking, expanding routing and system integration possibilities.

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Highlights

Advanced integrated DSP

The Bias Q1.5+ integrates an advanced hardware DSP designed to provide precise, secure and fully customizable audio management. 
The DSP+ version expands functionality with native support for the AES67 standard, enabling audio routing over IP networks and integration into complex digital systems. Everything is manageable in real time via ArmoníaPlus, for complete control over filters, limiters, signal and diagnostics, even remotely.

Versatile Application, Consistent Performance

Designed to work with lo-Z (from 2 Ω) and 70V/100V distributed lines, any mixed configuration of low and high impedance output loads is possible, making the Bias Q1.5 suitable for all applications in installed sound reinforcement systems.

Intelligent efficiency with SRM™ technology

The Bias Q1.5+ incorporates Smart Rails Management™ technology, which adapts power draw in real time based on the load and audio signal. The result? Reduced power consumption, lower thermal dissipation, and maximum operating efficiency, even with UPS or limited power lines.

PFC (Power Factor Correction) for flawless worldwide operation

Highly efficient, microprocessor-controlled power supply with built in PFC (Power Factor Correction) for flawless worldwide operation with any AC mains voltage in the range 85-275 VAC tolerant to peak up to 400 V

    Intelligent variable speed ventilation

    Ventilation is controlled by internal temperature, with front-to-rear airflow for rack mounting.

    70V-100V Line
    DSP
    Fan Controlled by Processor
    Wireless Control

    Product details

    Key features

    • Smart SRM™ technology: dynamically manages power rails to maximize efficiency and minimize waste
    • Universal power supply with high tolerance: highly efficient power section with integrated PFC, compatible with 85–275 V AC and tolerant to surges up to 400 V
    • High-performance audio delivery: ensures stable and accurate sound reproduction, even under demanding load conditions
    • Unmatched deployment flexibility: works seamlessly with both low-impedance (2 Ω) loads and 70/100 V distributed lines, ideal for hybrid installations

    Specifications

    • Number of channels
      4
    • Power rating
      600 watts per channel @ 8 Ω, 600 watts per channel @ 4 Ω, 800 watts per channel @ 2 Ω | BRIDGE MODE
    • AD converters
      24 Bit Tandem™ @ 48 kHz 125 dB-A Dynamic Range - 0.005 % THD+N
    • DA converters
      24 Bit Tandem™ @ 48 kHz 117 dB-A Dynamic Range - 0.003 % THD+N
    • Sample rate converter
      24 Bit @ 44.1 kHz to 192 kHz 140 dB Dynamic Range - 0.0001 % THD+N
    • Internal precision
      32 bit floating point
    • Latency
      2.5 ms (fixed)
    • Preset Memory
      128 MB (RAM) plus 512 MB flash for presets
    • Delay
      2 s input + 100 ms output for time alignment
    • Equalizers
      parametric IIR (peaking, hi/lo-shelving, band-pass, band-stop, all-pass, hi/lo-pass) | custom FIR | Raised-cosine
    • Crossover
      FIR linear phase | Butterworth | Linkwitz-Riley | Bessel 6 to 48 dB/oct (IIR)
    • Limiter
      TruePower™, RMS voltage, RMS current, Peak
    • Damping control
      Active DampingControl™ and LiveImpedance™ measurement
    • Selectable gains
      26 / 29 / 32 / 35 dB
    • Input sensitivity @ 8 Ω
      3.54 Vrms per 26dB / 2.51Vrms per 29dB / 1.78Vrms per 32dB / 1.26 Vrms per 35dB
    • Maximum input level
      20 dBu
    • Frequency Response ( ±0.5 dB , 1 W @ 8 Ω)
      20 Hz - 20 kHz
    • Crosstalk (1 kHz)
      Typical -70 dB
    • Signal-to-noise ratio (32 dB gain)
      >108 dB(A)
    • Input impedance
      20 kΩ balanced
    • THD+N (from 0.1 W to maximum power)
      <0.1% (typical <0.05%)
    • DIM (from 0.1 W to Full Power)
      < 0.05%
    • Slew rate
      >50 V/µs (input filter bypassed)
    • Output channels
      4x channels (Hi-Z or Lo-Z, bridgeable)
    • Analog inputs
      4x Phoenix MC 1.5/12-ST-3.81
    • AES67 digital inputs
      4 channels (1 x RJ45)
    • Output Connectors
      Phoenix PC 5/8-STF1-7.62
    • Dimensions (W x H x D)
      483mm x 44.5mm x 358mm
    • Weight
      7.0 kg (15.4 lb)
    • Power Supply Type
      Universal regulated switching with PFC and SRM
    • Rated voltage
      100-240 V ±10%, 50-60 Hz
    • Power factor (above 500 W)
      >0.95
    • AC Mains connector
      IEC C20 (max 20 A) region-specific power cord provided
    • Current draw and consumption
      idle (DSP+D) 31.1 W (0.45 A @ 115 V) / 31.5 W (0.25 A @ 230 V) | 1/8 power @ 4 Ω 405 W ( 3.7 A @ 115 V) / 405 W (2.1 A @ 230 V)
    • Operating temperature
      -10° - +35° C (14° - 95° F)
    • Cooling
      Variable-speed fan, front-to-rear flow
    • Heat dissipation
      Idle
    • Maximum undistorted voltage
      100 V peak @ 8 Ω
    • Maximum output current
      45 A peak
    • Hi-Z distribuited line power rating
      600 W @ 100 V / 600 W @ 70 V
    • IP rating
      IP20
    • Standards compliance
      auto-sensing Fast Ethernet (IEEE 802.3u, 100 Mbit/s)
    • Supported topologies
      Star
    • Remote interface
      Armonía Pro Audio Suite™
    • More Less

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