Vifa P21 response - just checking

[Mos Fetish]

Hi

Below is the WinISD gain chart for my chosen response.

The default volume was 127 litres - too big! So I simply pulled it back to 75 litres and upped the Fb to 30hz. F3 of 36hz.

Things look pretty good. That small <1dB bump above the line shouldn't be a problem. Right?

I'm crossing to a P13 at approx 300hz. Anyone see a problem with this config? Could it be better, keeping in mind my desire to keep the box volume at sub-refrigerator size. Any feedback?

Thanks.

Mos

 

[Mos Fetish]

Just in case -- that's 2 P21s in the box

Mos

 

[amoeba86]

I think that's just because he's showing 2 different plots for each box size isn't it.

 

[Vikash]

2 x P21WO-39-08 in ported enclosure with walls damped and single flush port.
vb = 75 litres
fb = 28.64
response peak = 0.14 @ 86.30Hz
f3 = 35.65

 

[ashok]

What software ?

Hi Vikash,
What did you use to make those plots ?
Thanks.
Ashok

 

[Vikash]

Unibox (Excel spreadsheet). Not as interactive as WinIsd, but better anyway IMO.