10W Audio Amplifier With Bass-Boost


Posted on Feb 6, 2014

This design is based on the 18 Watt Audio Amplifier, and was developed mainly to satisfy the requests of correspondents unable to locate the TLE2141C chip. It uses the widespread NE5532 Dual IC but, obviously, its power output will be comprised in the 9. 5 - 11. 5W range, as the supply rails cannot exceed ±18V. As amplifiers of this kind are freque


10W Audio Amplifier With Bass-Boost
Click here to download the full size of the above Circuit.

ntly used to drive small loudspeaker cabinets, the bass frequency range is rather sacrificed. Therefore a bass-boost control was inserted in the feedback loop of the amplifier, in order to overcome this problem without quality losses. The bass lift curve can reach a maximum of +16. 4dB @ 50Hz. In any case, even when the bass control is rotated fully counterclockwise, the amplifier frequency response shows a gentle raising curve: +0. 8dB @ 400Hz, +4. 7dB @ 100Hz and +6dB @ 50Hz (referred to 1KHz). A correct grounding is very important to eliminate hum and ground loops. Connect to the same point the ground sides of J1, P1, C2, C3 &C4. Connect C9 to the output ground.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Angle of rotation detector
High dynamic range CMOS (HDRC) imagers for safety systems
lm339 and bit of fun with accelerometer
PWM Lamp or Motor Controller
SW RF Pre-Amplifier
Joule Ringer 3
RF amplifier and filter for 2.5MHz
DIY ECG Machine On The Cheap



Top