198 In stock
Finished PCBA Amplifier Board
IWISTAO LM1875 Amplifier Finished Board with Protection Circuit Dual 12V to 22V No Including Heat Sink HIFI Audio DIY
Model No: WHFAB-1875
LM1875 is a decades-old product, why we have to play LM1875 amplifier circuit?
Because it is not airs and graces, not impulsive, not hysterical, not flourishing leaves and withering flowers also, everything is so real and natural. LM1875 has been a classic of audio player for many years, making simple, but mainly warm timbre, charming, and this unit has built in a protection circuit to protect your valued speakers, don’t be worried about damaging them again.
Top version of this board adopted original National Semiconductor LM1875, and supply voltage from AC dual 12V to dual 22V is available. Recommend about AC dual 18V, and then gain of the circuit is about 30 times magnification.
1. Its input ports are vulnerable by the introduction of outside interference to induce hum when this LM1875 PCBA not installed in a chassis and streaking. The correct connection is fitted in a metal chassis and the ground of signal source connect with the chassis, so it lead to a good shielding effect; in addition, the cable that connect potentiometer connection cable also use shielded one, if you do all above, the amplifier will be all silence even when deep night
2. No including heat sink for this amplifier board.
1. Two side Immersion Gold board.
2. PCB size: 80mm X 65mm, LM1875 IC can be laid down for soldering
You can match LM1036 Tone board, then the LM1875 amplifier will get far better effect as the below. And you can also buy the other matched components as below.
Tone PCBA Board Kits HIFI Audio LM1036 Equal Loudness Control Bass Treble Volume Adjustment Compact DIY Free Shipping
Matched 120W Amplifier Dedicated Toroidal Transformer
Matched Heat Sink
Heat Sink for LM1875 Amplifier Audio Radiator W78 T30 H57 No drilling Fixed Holes for Your DIY Free Shipping
Heat Sink for LM1875 Amplifier Audio W78 T30 H47 Radiator No drilling Fixed Holes for Your DIY Free Shipping
Applications by audiophiles (Photos only for you information)
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