Features & Applications
Features
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Applications
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Detailed Description T904
T904 is a 4-channel Class D touring amplifier from the Powersoft T Series range. Its 1U chassis combines amplification, loudspeaker processing and front-panel control for live sound systems. The model has a total power rating of 8000 W; the output available to an individual loudspeaker depends on impedance and how power is shared between channels.
The amplifier accepts analog, AES3 and Dante / AES67 inputs. Network audio complements the physical analog and AES3 connections, allowing the input format to match the system design. ArmoníaPlus provides system setup and monitoring. A 1.8-inch colour display and illuminated controls provide access at the rack, while WebApp operation is available through an external Wi-Fi access point.
Loudspeaker processing includes raised-cosine and parametric IIR equalization, custom FIR filters, crossover functions and independent input / output delay. The platform supports long FIR processing and presets compatible with the X Series workflow. TruePower, RMS voltage, RMS current and peak limiting address different loudspeaker protection requirements, with Active DampingControl for cable-loss compensation.
Bridgeable output pairs and Power Sharing support configurations such as full-range systems, stage monitors, bi-amplified loudspeakers or combinations of tops and subwoofers. A universal power supply with PFC and Smart Rails Management supports efficient mains use. The specification table separates symmetrical, asymmetrical and bridged power figures so that system design can follow the manufacturer’s stated loading conditions.
Manufacturer documents: T904 Datasheet · T Series User Guide
Technical Specifications T904
Amplifier |
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|---|---|
| TYPE | 4-channel Class D touring amplifier with DSP |
| OUTPUT CHANNELS | 4; bridgeable in pairs |
| MODEL TOTAL POWER RATING | 8000 W |
| SYMMETRICAL POWER / CHANNEL, 8 Ω | 1600 W |
| SYMMETRICAL POWER / CHANNEL, 4 Ω | 2000 W |
| SYMMETRICAL POWER / CHANNEL, 2 Ω | 1800 W |
| ASYMMETRICAL POWER / CHANNEL, 8 Ω | 1800 W |
| ASYMMETRICAL POWER / CHANNEL, 4 Ω | 2300 W |
| ASYMMETRICAL POWER / CHANNEL, 2 Ω | 1800 W |
| BRIDGE POWER / PAIR, 4 Ω | 3600 W |
| BRIDGE POWER / PAIR, 8 Ω | 4000 W |
| POWER MEASUREMENT CONDITIONS | Symmetrical: all channels driven and loaded equally. Asymmetrical: every second channel driven 6 dB below the stated channel; do not sum asymmetrical maxima as simultaneous continuous power. |
| MAXIMUM OUTPUT VOLTAGE | 175 Vpeak |
| MAXIMUM OUTPUT CURRENT | 55 Apeak |
Audio performance |
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| INPUT SENSITIVITY AT 8 Ω / 32 DB GAIN | 3.1 Vrms |
| SIGNAL-TO-NOISE RATIO | Typical 108 dB(A), 20 Hz–20 kHz at 8 Ω |
| MAXIMUM INPUT LEVEL | 24 dBu |
| FREQUENCY RESPONSE | 20 Hz–20 kHz, ±0.5 dB |
| CROSSTALK | <−70 dB |
| INPUT IMPEDANCE | 20 kΩ, balanced |
| COMMON-MODE REJECTION | >65 dB |
| THD+N | <0.1%; typical <0.05%, 0.1 W to half power |
| SMPTE IMD | <0.1%; typical <0.05%, 0.1 W to half power |
| OUTPUT IMPEDANCE | 26 mΩ at 100 Hz |
DSP |
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| A/D CONVERTERS | 24-bit / 48 kHz Tandem; typical 125 dB(A) dynamic range; 0.005% THD+N |
| D/A CONVERTERS | 24-bit Tandem / 48 kHz; 117 dB(A) dynamic range; 0.003% THD+N |
| SAMPLE RATE CONVERTER | 24-bit; 96 kHz; 140 dB dynamic range; 0.0001% THD+N |
| INTERNAL PRECISION | 32-bit floating point |
| LATENCY | 2.5 ms fixed |
| MEMORY | 256 MB RAM; 512 MB flash |
| INPUT DELAY | Up to 2 s |
| OUTPUT DELAY | Up to 100 ms per output |
| EQUALIZATION | Raised-cosine, custom FIR and parametric IIR: peaking, high/low shelving, all-pass, band-pass, band-stop and high/low-pass |
| CROSSOVERS | Linear-phase FIR; Butterworth, Linkwitz–Riley and Bessel IIR, 6–48 dB/oct |
| LIMITERS | TruePower, RMS voltage, RMS current and peak |
| DAMPING CONTROL | Active DampingControl |
Connections and control |
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| ANALOG INPUTS | 4 × female XLR |
| AES3 | 1 × female XLR input; 1 × male XLR link |
| DANTE / AES67 | 4 network-audio channels over two etherCON connectors (user guide) |
| SPEAKER OUTPUTS | 2 × speakON NL4 connectors |
| CONTROL NETWORK | Gigabit Ethernet, IEEE 802.3ab, auto-sensing; star or daisy-chain topology |
| CONTROL SOFTWARE | ArmoníaPlus; WebApp through an external Wi-Fi access point |
| DISPLAY | 1.8-inch colour TFT; 160 × 128 pixels; 600 nits |
| FRONT-PANEL CONTROLS | 8 push buttons with RGB LED feedback |
| USB | External-memory support |
| FIR SUPPORT | Up to 42.6 ms, as described by the manufacturer |
Power supply and thermal |
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| POWER SUPPLY | Universal regulated switch-mode; PFC and Smart Rails Management |
| NOMINAL MAINS | 100–240 V AC ±10%, 50–60 Hz |
| OPERATING MAINS | 90–264 V AC |
| MAINS INLET | IEC C20, maximum 20 A |
| 120 V STANDBY POWER | 15 W |
| 120 V IDLE POWER | 34 W |
| 120 V, 1/8 POWER AT 4 Ω: CONSUMPTION | 1702 W |
| 120 V, 1/8 POWER AT 4 Ω: CURRENT | 15 A |
| 120 V, 1/8 POWER AT 4 Ω: DISSIPATION | 1713 BTU/h |
| 230 V STANDBY POWER | 16 W |
| 230 V IDLE POWER | 34 W |
| 230 V, 1/8 POWER AT 4 Ω: CONSUMPTION | 1676 W |
| 230 V, 1/8 POWER AT 4 Ω: CURRENT | 8.2 A |
| 230 V, 1/8 POWER AT 4 Ω: DISSIPATION | 1624 BTU/h |
Construction |
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| DIMENSIONS (W × D × H) | 484 × 405 × 44.5 mm |
| RACK FORMAT | 1U |
| WEIGHT | 7.8 kg |
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