JLA-250D ±75V 500W 4Ω Mono Class-D Subwoofer Amplifier Module
JLA-250D is a compact amplifier module designed for subwoofer applications. It uses an aluminum heat spreader under the PCB which makes it easy to be retrofitted in the amplifier section of a busted plate amp or an old power amp. Operating temperature is good and can be placed inside a speaker cabinet with no external ventilation.
Capable of high current output for subwoofer duties, the bass is cleaner and more powerful than single chip, single supply amplifiers, and other class-d amps with aggressive current limiting protections. No feeling of restrained performance and will drive the subwoofer to its real capability.
It uses VER2923-223KL high current, low loss ferrite core output inductor which is suitable for subwoofers and other high power duties.
Each JLA-250D is tested for its rated output power* for 10 seconds, powered-on idling for an hour, and then retested again to guarantee a fault-free product.
* Output power tested with +/- 75V DC rails, 1kHz at 4 ohms load
1 pc assembled and tested mono module with heatsink.
Documentation via email
Built in speaker protect
Rugged design without using proprietary parts.
Can be retrofitted with most Velodyne subs.
Velodyne CHT-8QR, CHT-10, CHT-12,
EQ-MAX 10, EQ-MAX 12, 15 etc.
Supply Voltage: ±65V to ±75V DC
Speaker Protect Voltage: 12V DC (min 100mA)
Output Power(< 1% THD): 300W-8Ω
Output Power(< 1% THD): 500W-4Ω
THD+N: less than 0.05% at 420W 4Ω
Voltage gain: 30x
Input sensitivity: 1.5V RMS
Input impedance: 4K Ω
Load impedance: 4Ω or 8Ω
Idle dissipation: ~6W at ± 75V DC
THD 1kHz, 4Ω, ±75V: less than 0.1% at 500W
PCB area: 120mm * 71mm
Footprint w/Coilcraft: 120mm*100mm*30mm (L * W * H)
Overcurrent /short protection: Yes
Speaker Protection: Yes
Over voltage protection: No,
Overheat protection: 100 degC board sensing near mosfet
Main Chip: IRS2092S
4Ω subwoofers with ±60V to ±75V DC supplies
Retrofitting stereo amplifiers
Karaoke / Videoke / Jukebox system
Courier is a European Postal affiliated consolidator with normal shipping times of 3 to 6 weeks.
Feel free to contact us at:
Kindly check your spam or junk folder if you haven't received any response.