Overview:
Searching for powerful and hifi subwoofer driver,especially dealing with low impedance speakers.
Here comes the1 x 200Watt amplifier board,AA-AB31282.
This audio amplifier board employs Sure Electronics T-AMP technology,featuring low distortion and low noise level.
This amplifier board supports mono amplification by using PBTL topology.
By means of dedicated heatsink design,it is capble of delivering single channel maximum power 200W RMS @ 3ohm without extrordinary heatsink.
Besides of built-in chip protection, ESD and spike protection components used throughout input and output of the amplifier board ensure its robustness and reliablity.
Features:
Application:
Electrical Specifications:
Specifications typical @ +25℃, Powered by 34V DC, unless otherwise noted. Specifications subject
to change without notice.
Parameter | Conditions | Min. | Typ. | Max. | Units |
Power Supply | - | 15 | 34 | 36 | VDC |
Idle Power | SD Floating,FAN ON | - | 4.6 | 8 | W |
SD Floating,FAN OFF | - | 3.9 | 7 | W | |
Standby Power | SD Connected to GND,FAN OFF | - | 0.7 | 2 | W |
Efficiency | 200W @3ohm | 85 | - | 93 | % |
Minimum Load Impedance | - | - | 2 | - | Ω |
Switching Frequency | SD Floating | - | 660 | - | KHz |
Fan Active @ Temperature |
| - | 50 | - | ℃ |
Audio Performance:
Specifications typical @ +25℃, Powered by 34V DC, unless otherwise noted. Specifications subject
to change without notice.
Parameter | Conditions | Min. | Typ. | Max. | Units |
Gain | - | - | 26 | - | dB |
Input Sensitivity(RMS) | - | - | 1.3 | 1.8 | V |
Input Impedance | - | - | 10 | 11 | KΩ |
Output Power | @3Ω THD+N 1% | - | 150 | - | W |
@3Ω THD+N 10% | - | 200 | - | W | |
Bandwidth @ ±3dB | @3Ω | 20 | - | 20K | Hz |
THD | @3Ω, 1W, 1KHz | - | 0.0051 | 0.01 | % |
@3Ω, 100W, 1KHz | - | 0.069 | 0.1 | % | |
Output Noise Level | A-weighting,Input Connected to GND | - | 129 | 300 | µV |
SNR | 150W @3Ω THD+N 1% | - | 96 | 101 | dB |
Typical Performance Graphs:
Frequency response:
Noise Floor:
THD+N VS Frequency:
Thermal Image:
All parameters were tested with Rohde & Schwarz UPV audio analyzer and AP AUX0025 filter with AES17 filter enabled.