Features
● Input: noise gate, delay (1.2s), 12-band parametric equalizer, FIR filter, compressor, matrix.
● Output: high-pass, low-pass, 10-band parametric equalizer, FIR filter, delay (500ms), RMS limiter, peak limiter.
● Advanced Class D output circuit, advanced switch mode power supply, lightweight and compact
● Temperature-controlled continuous variable speed fan cooling, comprehensive protection circuit (thermal protection, clipping limiter, short circuit protection, etc.)
● Read the amplifier's current, voltage, impedance, temperature, fan speed information to the PC software
● Application range: conference room, multi-function hall
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Specification
|
Rated power |
2*1200W (8Ω), 2*1800W (4Ω), 1*3600W bridge (8Ω) |
|
Processor |
CEVA DSPx2 @350 MHz SIMD/ARM Cortex V7@840MHz |
|
Analog channel sampling rate |
48/96kHz |
|
Quantization bit |
24bit |
|
Dante sampling rate |
48/96kHz, 2x2 Dante channel |
|
Level |
(maximum input) +20dBu (maximum output) +10dBu |
|
Input sensitivity |
0.775Vrms |
|
Frequency response |
20Hz-20KHz (±0.5dB) @1W, 8Ω |
|
Signal-to-noise ratio |
≥100dB (A-weighted, 20Hz-20kHz, 8Ω) |
|
THD＋N |
< 0.05% (10% rated output power, ,8Ω) |
|
Input impedance |
20kΩ (balanced), 10kΩ (unbalanced) |
|
Conversion rate |
50 V/μs@8Ω, input fiter bypassed |
|
Damping coefficient |
> 1000 (20Hz-200H, 8Ω) |
|
Working voltage |
~100-240V (±10%) 50/60Hz |
|
Product size (H*W*D) |
483x45x299mm (W*H*D) |
|
Net weight |
5.4kg |
Q: How can a DSP Built in Amplifier improve the sound field accuracy of a multi-channel system through digital signal processing?
A: The amplifier with built-in DSP uses real-time digital algorithms to actively divide the audio signal, compensate for delays, and correct phases, and can accurately control the frequency response and sound wave propagation path of each channel speaker. For example, in a car scenario, DSP can use millisecond-level delay adjustment to eliminate the sound field deviation between seats based on the interior space structure, and use EQ equalization to repair the frequency response depression caused by the installation position, ultimately achieving accurate positioning of the stereo image and uniform distribution of the sound field.
Q: What are the causes and solutions for the common high-frequency current noise and background noise problems of DSP Built in Amplifier?
A: The internal resistance of the power supply is too high: it is necessary to upgrade the high-power transformer and increase the filter capacitor capacity (such as using low-ESR solid capacitors), and optimize the PCB routing to reduce the line impedance;
Ground loop interference: it is recommended to use a star grounding layout to isolate the signal ground and the power ground;
Bluetooth/USB signal crosstalk: enable the built-in noise reduction algorithm of the DSP (such as FIR filter) and use shielded wires. If the problem persists, you can adjust the input sensitivity of the DSP to match the previous stage signal level to avoid overload and noise.
