If a speaker sounds too bass heavy, there are several steps that can be taken to correct the problem:

It is important to check the placement of the speaker. If the speaker is placed too close to the wall or in a corner, this can cause the bass frequencies to be amplified. To reduce the bass level, the speaker should be placed further away from the wall or in the middle of the room.

It is advisable to check the settings of the AV receiver or amplifier. Many AV receivers and amplifiers have equaliser settings that can affect bass frequencies. To balance the sound, check the settings of the unit and reduce the bass level.

Some speakers have settings that can affect the bass, such as a bass boost switch. It is advisable to check the speaker's settings and adjust them accordingly.

If, despite all adjustments, there are still problems with too much bass, room correction software can be used to optimise the sound in the room. This software analyses the room acoustics and corrects the sound accordingly.

By trying and adjusting these steps, the sound of the speaker can be optimised and the bass level reduced to the desired level.