add a subwoofer to my Proac super tablette

[zyfb]

I have a pair of Proac super TABLETTE speaker, want to add a pair of subwoofer to extend its bass. I now have Seas H333 8' woofer, can anyone help me to design the box and the corss over? Thanks

 

[BHTX]

Download WinISD Pro and input T/S parameters. Why use a passive lowpass crossover?

 

[sreten]

Hi,

The H333 is a high efficiency 8" paper driver suited to vented boxes.

http://www.seas.no/images/stories/vintage/pdfdataheet/h0333_ca21rex.pdf

Around 20L sealed and stuffed is possible. Or larger vented.
The overdamped case (with same -6dB) is more room friendly.

A passive crossover could work, I'm not sure. Active is much easier.

/sreten.

 

[Thawach]

hi!


the QB3 alignment vented box is about 40 litres. the passive crossover air core coil is difficult to build because it's very big coil and may be increase R(ohm). but u can use steel core coil because it's lower R. the cut off about 100 hz that i often see.

 

[Thawach]

zyfb here is the big air core coil for subwoofer. i see it from the company from thailand. it has 2 version(active and passive ) the cut off xo is around 100 hz roll off 12 db/octave.


coil

TW

 

[zyfb]

zyfb here is the big air core coil for subwoofer. i see it from the company from thailand. it has 2 version(active and passive ) the cut off xo is around 100 hz roll off 12 db/octave.


coil

TW

Hi TW,
Thanks for you suggestion. how can I buy the coil, i have seen it in the WEB, looks good. plesae let me know.
zyfb

 

[sdclc126]

For your crossover parts, have you looked at Solen?

 

[Thawach]

hi zyfb

u can use passive xo calculator program for get the valve coil (mh) about 100 hz. when u buy if u want air core coil please choose low DCR. zyfb before u do please check the Sensitivity between proac and sub driver. these are not difference too much. zyfb u can use hi-pass filter order 1 for 4" proac@100 hz. u only use Con in series with 4" proac. if u want to check the respond frequency. i have free RTA to give u.


RTA


regard

TW