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.Specifications
|Input Voltage||+/- 25V dual supply (see kit 3114)|
|Power Supply||e.g. 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 Connections||Solder pads|
|Product Formats||SELF-ASSEMBLY Electronic Kit (KT) or|
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
LM1875 Data Sheet
Amplifier Power Supply General Advice
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