add a subwoofer to my Proac super tablette

zyfb · 6th November 2008, 10:17 PM

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 · 6th November 2008, 10:28 PM

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

sreten · 7th November 2008, 01:43 PM

Hi,

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

http://www.seas.no/images/stories/vi...33_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 · 7th November 2008, 03:26 PM

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 · 8th November 2008, 10:30 AM

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 · 11th November 2008, 07:05 PM

Quote:

Originally posted by 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

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 · 11th November 2008, 10:39 PM

For your crossover parts, have you looked at Solen?

Thawach · 15th November 2008, 11:34 PM

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

6th November 2008, 10:17 PM	#1
zyfb diyAudio Member Join Date: Mar 2008	add a subwoofer to my Proac super tablette 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

11th November 2008, 10:39 PM	#7
sdclc126 diyAudio Member Join Date: Jan 2005 Location: San Diego, CA	For your crossover parts, have you looked at Solen? __________________ Soft Dome

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6th November 2008, 10:28 PM	#2
BHTX diyAudio Member Join Date: Feb 2006	Download WinISD Pro and input T/S parameters. Why use a passive lowpass crossover?

7th November 2008, 03:26 PM	#4
Thawach diyAudio Member Join Date: Dec 2007	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.

8th November 2008, 10:30 AM	#5
Thawach diyAudio Member Join Date: Dec 2007	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

15th November 2008, 11:34 PM	#8
Thawach diyAudio Member Join Date: Dec 2007	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

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