Features & Applications
Features
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Applications
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Detailed Description Bias Q2+
Bias Q2+ combines four amplifier channels with integrated processing in a lightweight 1U chassis. The published output at 8 Ω is 1200 W per channel, with separate ratings for other loads and bridged operation. Smart Rails Management and a microprocessor-controlled supply with power factor correction support efficient operation across a wide mains-voltage range.
The amplifier supports both low-impedance loads from 2 Ω and 70/100 V distributed systems. ArmoníaPlus provides processing, preset access and monitoring, including FIR optimisation and loudspeaker protection tools. DSP+ variants add AES67 networking. Automatic power sharing supports unequal channel loads, and WM Touch compatibility provides a control option for installation systems.
Explore the Amplifiers range from Void Acoustics at B-Star. Technical references: Bias Q2+ datasheet, product brochure and user guide.
Product Images Bias Q2+
Technical Specifications Bias Q2+
| CHANNELS AND CONNECTIONS | |
|---|---|
| OUTPUT CHANNELS | 4 Hi-Z or Lo-Z; bridgeable in channel pairs |
| ANALOG INPUTS | 4; Phoenix MC 1,5/12-ST-3,81 |
| AES67 INPUTS | 4 channels over 1 RJ45 on the DSP+ variant |
| OUTPUT CONNECTOR | Phoenix PC 5/8-STF1-7,62 |
| AMPLIFIER OUTPUT | |
| OUTPUT PER CHANNEL AT 8 Ω | 1200 W |
| OUTPUT PER CHANNEL AT 4 Ω | 1200 W |
| OUTPUT PER CHANNEL AT 2 Ω | 1500 W |
| BRIDGED OUTPUT AT 4 Ω | 3000 W |
| BRIDGED OUTPUT AT 8 Ω | 2400 W |
| 100 V LINE OUTPUT | 1200 W |
| 70 V LINE OUTPUT | 1200 W |
| MAXIMUM UNCLIPPED OUTPUT VOLTAGE AT 8 Ω | 139 V peak |
| MAXIMUM OUTPUT CURRENT | 45 A peak |
| OUTPUT RATING CONDITIONS | All channels driven and loaded symmetrically; unequal loading permits higher performance |
| AUDIO | |
| GAIN | 26 / 29 / 32 / 35 dB |
| INPUT SENSITIVITY AT 8 Ω | 4.9 / 3.47 / 2.45 / 1.73 Vrms at 26 / 29 / 32 / 35 dB gain respectively |
| MAXIMUM INPUT LEVEL | 20 dBu |
| FREQUENCY RESPONSE | 20 Hz–20 kHz, ±0.5 dB; 1 W at 8 Ω |
| CROSSTALK AT 1 KHZ | Typically −70 dB |
| SIGNAL TO NOISE RATIO | > 110 dB(A); 32 dB gain, analog input, 20 Hz–20 kHz at 8 Ω |
| INPUT IMPEDANCE | 20 kΩ balanced |
| THD+N | < 0.1%, typically < 0.05%; 0.1 W to full power |
| DIM | < 0.05%; 0.1 W to full power |
| SLEW RATE | > 50 V/µs; input filter bypassed at 8 Ω |
| DSP | |
| AD CONVERTERS | 24-bit Tandem at 48 kHz; 125 dB-A dynamic range; 0.005% THD+N |
| DA CONVERTERS | 24-bit Tandem at 48 kHz; 117 dB-A dynamic range; 0.003% THD+N |
| SAMPLE RATE CONVERTER | 24-bit, 44.1–192 kHz; 140 dB dynamic range; 0.0001% THD+N |
| INTERNAL PRECISION | 32-bit floating point |
| LATENCY | 2.5 ms fixed-latency architecture |
| MEMORY AND PRESETS | 128 MB RAM plus 512 MB flash for presets |
| ALIGNMENT DELAY | 2 s input + 100 ms output |
| EQUALIZER | Raised-cosine, custom FIR and parametric IIR; peaking, high/low shelving, all-pass, band-pass, band-stop, high/low-pass |
| CROSSOVER | Linear-phase FIR; Butterworth, Linkwitz-Riley and Bessel IIR; 6–48 dB/octave |
| LIMITERS | TruePower, RMS voltage, RMS current and peak limiting |
| DAMPING CONTROL | Active DampingControl and LiveImpedance measurement |
| MAINS POWER | |
| POWER SUPPLY | Universal regulated switch-mode supply with PFC and Smart Rails Management |
| NOMINAL MAINS VOLTAGE | 100–240 V AC, ±10%, 50–60 Hz |
| OPERATING VOLTAGE | 90–264 V AC |
| POWER FACTOR | > 0.95 at output above 500 W |
| IDLE CONSUMPTION AND CURRENT | 115 V: 33.6 W / 0.5 A; 230 V: 33.7 W / 0.35 A |
| CONSUMPTION AND CURRENT AT 1/8 OUTPUT, 4 Ω | 115 V: 850 W / 9.16 A; 230 V: 826.8 W / 5.02 A |
| CONSUMPTION AND CURRENT AT 1/4 OUTPUT, 4 Ω | 115 V: 1718 W / 15.96 A; 230 V: 1651 W / 9.41 A |
| AC MAINS CONNECTOR | IEC C20 inlet, 20 A maximum; region-specific mains lead |
| THERMAL | |
| OPERATING TEMPERATURE | −10°C to 35°C |
| COOLING | Continuously variable-speed, temperature-controlled fan; front-to-rear airflow |
| IDLE HEAT DISSIPATION | 115 V: 110.3 BTU/h / 27.8 kcal/h; 230 V: 110.6 BTU/h / 27.9 kcal/h |
| DSP+ IDLE HEAT DISSIPATION | 115 V: 114.7 BTU/h / 28.92 kcal/h; 230 V: 115.1 BTU/h / 29.02 kcal/h |
| HEAT DISSIPATION AT 1/8 OUTPUT, 4 Ω | 115 V: 853.5 BTU/h / 215.2 kcal/h; 230 V: 768.1 BTU/h / 193.7 kcal/h |
| HEAT DISSIPATION AT 1/4 OUTPUT, 4 Ω | 115 V: 1768.5 BTU/h / 445.9 kcal/h; 230 V: 1539.8 BTU/h / 388.3 kcal/h |
| MECHANICAL | |
| DIMENSIONS W × H × D | 483 × 44.5 × 358 mm |
| WEIGHT | 7 kg |
| IP RATING | IP20 |
| NETWORK AND CONTROL | |
| REMOTE INTERFACE | ArmoníaPlus |
| NETWORK AUDIO | AES67 on the DSP+ variant |


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