Fever Amplifiers Board TDA7294 + LM1036 + NE5532 Fever Amplifiers Board 100Wx2

Fever Amplifiers Board TDA7294 + LM1036 + NE5532 Fever Amplifiers Board 100Wx2

This board window:
-  the output power: 100 w and 100 w double track output (suggest using impedance and oh, sixty - 150 w, 6-8 inch speaker unit), home the most open half of the volume is enough, the two pieces of original installation import TDA7294 bear power amplification.
- take lead tone amplifying circuit: the distortion degree is less than 0.03% of the original import LM1036 + big S NE5532 bear, design for the signal to the LM1036 modulation into binary put NE5532, binary put adjustment to the appropriate magnification, greatly improve the signal-to-noise ratio.
- band horn protection circuit: a startup delay, shutdown moment disconnect, avoid the power on and off when the speaker "poop-poop sound", boot time delay about 3-5 seconds. At the same time if output accidentally mixed with dc voltage, more than 1.2 V will immediately disconnected, protect horn will not burned. The famous brand by 12 v omron relay bear.
- the former stage and later stage power independent input: the first level input ac double 9-15 v (recommend double 12 v), the latter stage input ac double 12-26 v (recommend double 24 v). Backing for 3 a flat bridge bear rectifier; The latter stage for 25 a flat for rectifier bridge, the 4 a total capacity of 27200 uf big capacity for filtering.
- signal coupling: between before and after level signal coupling all adopt the original installation import "wei horse capacitance bear.
- fever: we test configuration - 300 w ring cattle transformer, voltage level after double 24 v, the former level voltage double 12 v, two speakers impedance and the 6.5 inch each 100 w, computer voice half open, cool dog music player voice half open, power amplifier voice open is the largest, after 10 minutes TDA7294 measured the heating at 65  or so floating, in a safe temperature range, the heat dissipation by almost 1 pound radiator bear. In addition to the normal TDA7294 hot outside, other components are very low fever, performance is stable.
- signal-to-noise ratio, power amplifier circuit design is reasonable in relation to the overall SNR by years of power amplifier, the board design experience, pay special attention to power supply and signal to separate, single point grounding, and finally make the plate with high signal-to-noise ratio, static down the volume potentiometer open is the largest, unless the ears close to speakers, otherwise the distance ten to twenty cm to hear the noise.
- listening: most bravery flavour, sound beautiful resistance to listen! Alt delicate, soft, fully, ductility, Bass strong, full, keep your business on the right track and intensity are strong, has deep submergence.
- control potentiometer: four potentiometer all adopt the table production A50K whole sealing type stepping potentiometer, control handle and durability best, each potentiometer is equipped with aluminum alloy knob, gold, silver, black, color randomly

Technical parameters:
- Output: 100 w+ 100 w
- Output channel: 2.0 dual channel
- Amp: 4-8ohm, recommend to use 6.5 inch 100W amp
- Size: 212x125x52mm
- PCB specification: fiberglass plate 140 x125mm, thickness: 1.6 mm
- net weight: 616 g