Can a baffle diffraction do this to an OW1

harvardian · 30th December 2002, 06:54 PM

Here is a waveform from my OWI . The cabinet has no edge recess and the driver is not flush.

Pan · 30th December 2002, 07:13 PM

In a worst case scenario +/- 5dB or so is possible from edge diffraction :-(

Ain´t life a b_tch!

/Peter

BAM · 30th December 2002, 07:49 PM

So is it really THAT important to flush-mount tweeters on a relatively narrow baffle (7") ?

I want to make sure my Seas H537-06 tweeters sound great.

planet10 · 30th December 2002, 07:50 PM

Quote:

Originally posted by harvardian
Here is a waveform from my OWI . The cabinet has no edge recess and the driver is not flush.

Yes, if you are talking about the suckout at 3.5k. Would be associated with a distance of about 4 1/8" or half that.

dave

BAM · 30th December 2002, 07:54 PM

If I flush-mount my tweeter, do I need to also flush-mount my woofers?

My other question: What's causing that huge -10 dip right in the middle of the response curve?

harvardian · 30th December 2002, 08:16 PM

Hi Guys,

Thanks,

Seem like I have two problems.

1) Tweeter is not flush mounted - causing 8.5KHz (1.6")
2) Baffle is 9" wide and not rounded - causing 3.5Khz

Time for new cabinets. These were hand-me-downs and already cutout for larger tweets.

Pan · 30th December 2002, 08:31 PM

It´s the tweeter response meeting the low fr. noise in the room.

/Peter

30th December 2002, 08:16 PM	#6
harvardian diyAudio Member Join Date: Dec 2001 Location: Austin, TX	Hi Guys, Thanks, Seem like I have two problems. 1) Tweeter is not flush mounted - causing 8.5KHz (1.6") 2) Baffle is 9" wide and not rounded - causing 3.5Khz Time for new cabinets. These were hand-me-downs and already cutout for larger tweets. __________________ doing my part to Keep Austin Wierd.

30th December 2002, 08:31 PM	#7
Pan diyAudio Member Join Date: Sep 2002	BAM It´s the tweeter response meeting the low fr. noise in the room. /Peter

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30th December 2002, 07:13 PM	#2
Pan diyAudio Member Join Date: Sep 2002	In a worst case scenario +/- 5dB or so is possible from edge diffraction :-( Ain´t life a b_tch! /Peter

30th December 2002, 07:49 PM	#3
BAM diyAudio Member Join Date: Sep 2001 Location: Carmel, IN; West Lafayette, IN	So is it really THAT important to flush-mount tweeters on a relatively narrow baffle (7") ? I want to make sure my Seas H537-06 tweeters sound great.

30th December 2002, 07:54 PM	#5
BAM diyAudio Member Join Date: Sep 2001 Location: Carmel, IN; West Lafayette, IN	If I flush-mount my tweeter, do I need to also flush-mount my woofers? My other question: What's causing that huge -10 dip right in the middle of the response curve?

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