Boost your factory Bose Subwoofer for $20

Hmm.. was wondering if someone can chime in on how much of a difference this would make (or is +3db a significant enough effect)? I know that we wont achieve results with this mod compared to if we were to add an aftermarket sub, but am debating on whether or not to try out this mod.

Thanks in advance!
 
toy4x said:
I started this on the another thread 2 years ago. I'm glad we have a member like steadifx that was able to provide a diy from the graphs and info from my thread. Great job on the DIY, mine is still working great.

My thread got into a debate about the audiocontrol epicenter by the end....:tongue (2):
Click to expand...

Thanks man! Without your original thread, the idea would never have dawned on me though. Thankfully you had enough info that I could decipher and resurrect this for FX owners.

I did read through all the epicenter stuff out of curiosity lol.


--
Sent from my Jailbroken iPhone 4 (iOS 5)
 
pmanliu said:
Hmm.. was wondering if someone can chime in on how much of a difference this would make (or is +3db a significant enough effect)? I know that we wont achieve results with this mod compared to if we were to add an aftermarket sub, but am debating on whether or not to try out this mod.

Thanks in advance!
Click to expand...

That is a really complicated question. First, the dB scale is logarithmic as opposed to linear. ie, a 10dB increase in sound equates to a sound that is 10 times louder, and a 20dB increase would be 100 times louder. Second, with this circuit you're not adding to the output volume, you're adding to the amplifier's input voltage, which will affect the output differently at different volume levels and frequencies.

The short answer is that you'll notice it for sure, but you may also notice distortion due to the amp being over-driven by about 25%, which is a lot for a cheapo little amp like the stock Bose sub amp. This distortion probably wont hurt the amp and you likely wont even hear it, but if you crank it enough it will clip and blow your woofers post haste.

The bottom line is that this thing costs $25 and is pretty easily removable. Give it a shot, worst case scenario it sounds bad with your music and you pull it out. Lesson learned. Just to throw this out there, I picked up a used JL Audio 200w mono sub amp on craigslist for $30...
 
Just finished this mod. DIY is very detailed and easy to follow, thanks again OP.

As for improvement, there is a subtle increase in bass at my normal listening volume (bar @ 2/5's). An enjoyable and over the top increase IMO. Definitely fun learning to soldering and putting everything together.
 
ok, so i just did this and it works... sometimes... it works and after a while sub kicks off... and now the trial n error begins... short? amp clipping and shutting off? odd cuz volume wasnt being cranked when i tested it... maybe my solder is too close to each other and shorting?
 
I would suggest to go over all the components and pay attentions to their values. I did one for Andrew (blueduck1105) and have been working fine.
 
i am but i actually took it a step further and bought a 200w monoblock amp and pac audio line out converter and once it gets here im going to install that to the stock subs alla tchuck
 
Basically, if you can sort out the wiring between the two and find a good spot in the trunk, I you don't see why not.
 
^^^nope. What are you running for a subwoofer now. You shouldn't mix different subs or different size subs. They will cancel each other out
 
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