3050 - 25W Mono Hi-Fi Amplifier Module (LM1875)

Circuit uses a high fidelity LM1875 amplifier IC and delivers up to 25W RMS into 8 Ohms @ 1% THD. S/N ratio >100dB. This little board produces quite outstanding results given it's simplicity and price.

For full technical details please click on the User Manual and LM1875 links below.

The IC has short circuit and thermal overload protection. 2 x On-board 2A protection fuses. Solder pad connections. Heatsink, power supply and cables not provided.

Technical Specifications
Supply Voltage	± 25V dual supply (see kit 3114)
Power Supply	CFS005 or kit 3114 with a suitable mains transformer
Current Consumption	70mA standby, 4 Amps max.
Output Type	Up to 30W into 8 Ohms 25W RMS, 8 ohm load, ± 25V supply
Output impedance	4 - 8 Ohms
S/N ratio	> 100 dB
THD	< 0.15% @ 1kHz, 20W
Freq. response	~ 15 Hz to 50 kHz, –3 dB
Open Loop Gain	90 dB typical
Board Dimensions	51x53mm
Board Connections	Solder pads
Product Formats	SELF-ASSEMBLY Electronic Kit (KT ) or PRE-ASSEMBLED Electronic Module (AS) more
Documentation	User Manual LM1875 Data Sheet Amplifier Power Supply General Advice