Build Your 9V Bass Booster Circuit Diagram

Description

The reverberating pulse of bass is a key component of contemporary audio, whether it’s the deep, visceral vibration of disco music or the foundational low-frequency line of rock genres, both hard and relaxed. A straightforward method for achieving a modern, intensified bass sound without incurring the expense of purchasing entirely new equipment is the utilization of a Bass Booster between your instrument, such as an electronic organ or similar device, and the connected amplifier. This booster device extracts the high-frequency components from the instrument’s output signal and subsequently amplifies the lower frequencies, delivering a focused “all-bass” signal to the amplifier. Naturally, the size of the speaker utilized in conjunction with the amplifier will directly impact the power of the bass; employing 15-inch speakers alongside the Bass Booster has the potential to cause windows to vibrate. The Bass Booster is powered by a standard 9-volt transistor radio battery. It can be assembled on a compact printed circuit board or on a veroboard utilizing point-to-point wiring. The booster connects between your instrument and its amplifier via two standard RCA Jacks.

Circuit diagram:

Parts:

Using Bass Booster:

Connect your electronic guitar or other electronic instrument to input jack J1; Connect output jack J2 to your instruments amplifier's normally-used input. With power switch S1 off, key S2 so the instrument feeds directly to the instrument amplifier. With P2 set full counter-clockwise (Off), turn power switch S1 on, key S2 once, and advance P2 for the desired Bass Boost level. To cut back to natural sound just stomp down on S2 and key the Bass Booster out. Don't worry about leaving power switch S1 on for several hours of a gig. The circuit pulls less than 1mA from the battery, so battery will last many, many months.