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Other models：   LD-300     LD-400     LD-600     LD-800     LD-1000     LD-1200     LD-1400     LD-1500

LD-1400 Product Description

The LD series amplifier adopts a stable and reliable circuit design; Select a field-effect transistor input operational amplifier as the preamplifier, a common base circuit as the inverter, and a common collector circuit as the output; Stable performance, convenient input and output interfaces, and complete functionality. A complete protection circuit includes overcurrent protection, output DC voltage protection and self-locking (which can avoid the harm caused to the speaker by the relay repeatedly opening and closing in the protective state), temperature protection, startup delay, and temperature control stepless speed regulation fan air cooling and heat dissipation.

TECHNICAL INDEX

Model LD-1400

8Ωpower:2*1400W

4Ωpower:2*2600W

8Ωbridge power: 2*3650W

Total harmonic distortion: operational condition，1KHz <0.025%

Intermodulation distortion: operational condition，60Hz/7kHz—4/1 <0.075%

Frequency response:operational condition，20Hz-20kHz < +/- 0.25dB

Power bandwidth: operational condition，-3dB 10Hz-50kHz

Phase response:operational condition，20Hz-20kHz < +/- 8 degrees

Signal to Noise Ratio:1KHz, 0.775V input, A-weighted,>110dB

Damping coefficient:Under normal working conditions, 63Hz>1500

Conversion rate:1us/1ms narrow pulse, 32dB gain>100V/us

Input impedance: Normal working conditions, 1KHz, balanced input of 20 kohm

Minimum load impedance:Stereo sound>1.6 ohm Bridge>3.2 ohm Parallel connection>0.8 ohm

Separation degree:1KHz, 0.775V input>80dB

Common mode rejection:Under normal working conditions, 1KHz>80dB