Subwoofer for Bass Guitar?

[crash91]

I have a headphone bass amp (The VOX amplug) which is pretty good for using with headphones for practice. I also have a pair of PC speakers which I use sometimes, which sound really crappy for bass.

I also have an old home theater sub (Sony SA-WMS7). According to the manual the sub can reproduce 24-150Hz. I was wondering whether I could use a splitter and give one output to the PC speakers, and another through a low pass filter to the sub. I tried the sub on it's own but the sound was really muddy, hence the idea.

I know a little bit about filter design but I'm unsure about whether an active lowpass filter would be able to handle the sub as a load. I'm thinking of using a
Butterworth lowpass filter with unity gain before I give the input to the sub (The sub also has an amp inbuilt).

Any suggestions guys? 😕😕

 

[NEO Dan]

Sit on the sub while wearing the headphones or duck tape the sub to your head while wearing the headphones.

 

[chris661]

I think more important would be to add a low cut for the PC speakers - you'll need to take the low end away from them to enable them to play clean(er).

Apart from that, go for it - active filters are easy to knock together.

Chris

 

[crash91]

Thanks, I think I'll make filters for each of them. We'll see how it turns out.

 

[sreten]

Hi,

Your sub has a line in and already has built in low pass filter.

What does the mode switch on the sub do ?

Simply split a line signal into the sub line in and your active speakers.

Reduce any bass setting on the speakers and set up the sub to suit.

rgds, sreten.

 

[tb46]

Hi Y'all,

If you google for Sony SA-WMS7 you should find this link to a service manual: http://www.shema.ru/0_s/Radio/sony/SA-VE702.pdf
And, how long will a home 8" subwoofer last with a direct input from an electric bass?

Regards,

 

[sreten]

And, how long will a home 8" subwoofer last with a direct input from an electric bass?

Hi,

I found that as well. From my quick perusal of the schematic indefinitely, as
it has a limiter board. In fact rather than needing a a filter if you bypassed
the low pass filters it would probably be a very decent practice amplifier.
(Except if the limiter does not like unexpected high frequencies, who knows.)

rgds, sreten.

I can't say trivially how to bypass the filters as i don't have the time,
but theoretically just removing several capacitors should work.