DIATONE DA-A15 Power Amp / DA-M15 Power Level Meter.

Description: A lot of rust, but no problems with operation. One screw for mounting amp and meter is hard to turn. Video uploaded on YOU TUBE　https://www.youtube.com/watch?v=1lqgFP5aNZs We do not have any equipment to measure sound quality.We do not know the exact value of the sound quality. Please understand. DA-A15 Power Amp Feature series power amplifier. Separate power supplies for the left and right channels and two monaural amplifiers are configured on the same chassis.This eliminates mutual interference from the power supplies, time coupling and electrostatic coupling in the high frequency range, and improves the separation between channels. A symmetrical, full-complementary 3-stage Darlington OCL circuit and a differential amplification 2-stage current mirror drive system are used.The three-stage Darlington circuit with high DC current amplification and symmetrical drive with high gain and low distortion, coupled with a low distortion current mirror circuit, enables a low distortion rate. The combination of the current mirror drive and transistors with excellent high-frequency characteristics improves pulse rise characteristics and high-frequency distortion characteristics. The power supply section is equipped with two 250VA power transformers and 70V, 12000μF x 2 electrolytic capacitors. Heat sinks with 0.35°C/W per channel are mounted externally.This provides a high cooling effect and allows the junction temperature of the power transistors to be kept sufficiently low.The parallel push-pull of the power transistor with Pc=150W ensures high reliability. For speaker switching, a direct speaker terminal is adopted that uses the protection relay as it is.As a result, there is no conventional speaker switching switch, so there is no reduction in damping factor due to contact resistance of the speaker switching switch. Docking and remote control with Feature series preamplifiers are possible. Type Stereo power amplifierOutput Power20Hz to 20kHz: 150W+150W(8ohm)200W+200W(4Ω)1kHz: 160W+160W(8ohm)230W+230W(4 ohms)Music Power: 510W(8 ohms)860W(4ohm)EIAJ (5% distortion): 400W(8 ohms)600W(4 ohm)Harmonic DistortionAt rated output: 0.1At 1W (20Hz to 20kHz): 0.02Rated output(-3dB, 1kHz): 0.003Modulation distortion (1W, 50Hz:7kHz=4:1): 0.03Input sensitivity/impedance 1V(variable)/50kΩFrequency response (0.5W, 0dB -1dB) 10Hz to 100kHzOutput bandwidth (IHF 0.1% distortion) 10Hz to 50kHzDamping factor 100Channel Separation1kHz: 90dB20kHz: 80dBResidual noise 0.30mVMuting time: 5 sec.Applicable load impedance 4 to 16 ohmsPower supply AC100V 50Hz/60HzPower consumptionElectrical Appliance and Material Control Law: 320WRated output (8Ω): 520WDimensions: W425 x H170 x D285mmWeight 18kg DA-M15 Power Level Meter A full-scale power level meter incorporating a large, easy-to-read meter.The output of the music signal coming out of the power amplifier is detected and indicated by two meters for each left and right channel, and can be read directly in watts. A rack-mount panel is adopted for convenient rack assembly, and a carrying handle is also included as standard equipment. Model Power Level Meter

Price: 950.1 USD

Location: katano-city

End Time: 2024-01-11T13:04:43.000Z

Shipping Cost: 0 USD