The GG version is the full name of Gaincard. It is a very good-sounding LM1875 circuit that has been optimized through repeated comparison and verification. It has a wide frequency band, is delicate, durable, and has a stable midpoint. If you have never played LM1875, it is recommended to buy it and try it. , if the user who has bought the LM1875 can buy it as an upgrade.
The principle is that the voltage of the two input terminals of the inverting amplifier circuit is always 0, and does not change with the input signal. The input voltage of the transistor (FET) at the input terminal of the amplifier is constant, and the bias state always maintains a suitable operating point.
Generally speaking, the single output of LM8175 is 4A current, the official indicator, low drive sensitivity, heavy-duty speakers, it is useless to use BTL, the driving force will be insufficient, the parallel output can double the driving current to 8A current. , so that the sound field is better, the mid-low frequency is fuller, and the power is also improved
PCB size: 124X76 mm
There are two packages, one is only the power amplifier board, the other is the power amplifier board plus the cooling plate, please pay attention to the order
The default main capacitor of the kit is the original British NOVER 10000UF 35V, and the sound is more durable than Japan Chemical and Nikon.
Product Highlights:
*Using a good sound CG circuit structure, the sound is very delicate and durable, and the midpoint is stable
* Double-sided gold-plated military PCB is adopted, which has good electrical conductivity and is not easy to oxidize.
*Add red pentagonal copper inductor to the output to eliminate interference and clutter, and the sound quality is purer and more natural
* Japan Omron protection circuit, more assured to use
*Full advanced component configuration
PCB size "123MMX75MM board is double-layer immersion gold PCB
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