AD300.4
Description
This four-channel power amplifier has been developed for fixed installations that require limited space within the standard 19″ rack. Using the Dante protocol, you can connect your instrument to the amplifier via Ethernet cables and have a redundant network by connecting to a switch.
The AD300.4 has high efficiency thanks to its Class D technology and can deliver 4x300W RMS/4 Ohms
Its key features are: an integrated limiter, protections (thermal, short, muting on/off), Euroblock inputs/outputs, front gain control, status LEDs (Signal, Clip, Protect, Power/Prior, Bridged), plus operating modes.
Dante® Card Feature Summary
- On-board microprocessor to handle local control and management functions
- Bit depth: 32 per sample
- Up to 2×2, 4×4 channels at 48kHz
- Up to 2×2, 4×4 simultaneous audio streams
- Hardware audio metering
- High-quality, low jitter on-board clock
- Up to 2000 sample audio buffering per channel
- Standard RGMII/MII interface for Ethernet PHY or switch chip
TECHNICAL SPECIFICATIONS
Crossover Frequency
Cut off frequency selectors for hi-pass (CH A, CH B) and low-pass (SUB) filters. The value can be set from 50Hz to 250Hz.
X-OVER FREQ is available in Mode 7 and Mode 8 only.
Mode selector:
- Mode 1: All channels stereo
All input and output channels are independent. - Mode 2: All channels parallel
All outputs are the same with channel input. - Mode 3: A/B bridged C/D bridged
Input the signal to channel A, connect the speaker’s “+” to the output A+, connect speaker‘s ‘-’ to the output B+. Then you get a 300W(8Ω) power. CH C and CH D are the same. - Mode 4: A/B parallel C/D parallel
CH A output and CH B output are the same whether input from CH A or CH B. The CHC and CH D are the same. - Mode 5: A/B stereo C/D bridged
CH A’s input and outputs are independent from CH B. CH C and CH D are bridged. - Mode 6: A/B parallel C/D bridged
CHA and CH B are parallel. CHC and CH D are bridged. - Mode 7: A/B stereo C/D SUB
CH A and CH B are stereo. CH C and CH D are bridged. SUB output signal is low frequency from CHC input. X-OVER FREQ is available. - Mode 8: A/B stereo C/D SUB
CH A and CH B are stereo. CH C and CH D are bridged and the device filters and amplifies signal A+B to feed the Subwoofer with the low frequencies only. X-OVER
FREQ is available. - Mode 9: Amplifier Mute
Amplifier is Mute.
| THD | <0,1% |
| CH A/B (One Channel Drive) | 4Ω RMS – 300 W |
| CH A & CH B CH C & CH D (All Channel drive) | 2Ω EIAJ – 600 W x4 4Ω RMS – 270 W x4 |
| CH A & CH B CH C & CH D (Bridge Mono Mode) | 4Ω EIAJ – 1200 W x2 8Ω RMS – 540 W x2 |
| Frequency Response (CH A – CH D) | 20 Hz – 20k Hz +0/-1 dB |
| Frequency Response SUB Mode (SUB) | 20 Hz – (50 Hz – 250 Hz) +0/-3 dB |
| Frequency Response SUB Mode (CH A – CH B) | (50 Hz – 250 Hz) – 20kHz +0/-3 dB |
| S/N Rate | >96 dB |
| Gain (V) | 30 +/- 0,5 dB |
| Input Sensitivity | 0,9-1,1 V (0+/-1 dBv) |
| Input Impedance | 20 kΩ balanced or 10 kΩ unbalanced |
| Controls | Front panel: On/Off Power Switch, volume channel A,B& SUB Rear panel: SUB, CHA+CHB selector: Cut off frequency selectors Modes select |
| Indicators | POWER ON: Green Led SIGN: Green Led PROT: Red Led CLIP: Red Led Bridged: Red Led Prior: Green / Red Led |
| Connectors | Input: Euroblock Dante Card: RJ45 Output: Euroblock |
| Load Protection | On/Off Mute, DC fault grounding relay, internal fault fuses |
| Power Supply | 110 – 120 V or 220 – 240 V 50-60 Hz |
| Weight | 6,2 Kg – 13,67 Lbs |
| Dimensions (LxDxH) | 483 x 360 x 44 mm 19x 14,17 x 1,73 “ |
