Diy Sub REW Graph

[c3ham]

hi guys i was just wondering if i would benifit much from buying a BFD here is my in room response from listening position

[brucek]

It's a bit difficult to interpret because we don't know the crossover you have chosen to use with REW. Is it 90Hz and is this your desired target?

Can you re-post the graph with a vertical axis of 45dB to 105dB and since it drops off so rapidly at 20hz you may as well make your horizontal axis from 20Hz to 200Hz.....

brucek

[c3ham]

hi brucek my target crossover is 100hz and that is what i have set it to in REW here is a new graph the way you wanted it

[brucek]

It is quite a good response, but you could help it a lot with a BFD.

If you raised the wholesale level of your sub such that the entire graphed response shifted up about 6dB, then you could cut approximately as I've shown below and have a better response. It's that area between 70-100Hz that would benefit the most.. There's a lot of signal in that area.


diy_sub.jpg


brucek

[c3ham]

thanks for the help im a newbie just thought i would build a sub as a wee project

[c3ham]

hi

Will this http://www.andertons.co.uk/acatalog/...FBQ3102%2ehtml do the same job as the DSP1124P cause no one in the UK seems to have the DSP1124P in stock

thanks

[JohnM]

That isn't suitable, if you can't find the 1124P go for the FBQ2496 http://www.dolphinmusic.co.uk/page/s...roduct_id/6360