How to cancel the boost output from certain amplifiers at some low frequencies? (1 Viewer)

[Manuel Delaflor]

I have noted that several subwoofer amplifiers have a boost at around 30Hz, is there a way to override it if one doesn't have access to the schematics?

 

[Patrick Sun]

It is all dependent on the model of the plate amp.

 

[Manuel Delaflor]

Thanks Patrick, and how do I know? Should I take the amplifier to a technician to see if he knows how?

 

[Cees Alons]

Manuel,

If there is no dial whatsoever on the sub, it may be a hard job. The best chance would be a service centre of the manufacturer.

Do not forget that it may be in the driver+box design, in which case it is difficult, if not impossible, to influence.

Cees

 

[Saurav]

The plate amps from Parts Express come with instructions for customizing or disabling the boost. The procedure involves unsoldering a couple of resistors and replacing them with resistors of other values. I just did this for my amp, and now things sound *much* better.