Offsett Tweeter....? - diyAudio
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Old 6th May 2015, 05:45 AM   #1
djverne is offline djverne  United States
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Talking Offsett Tweeter....?

I知 working on building the Piccolo kit which I purchased off of Meniscus audio. I have the boxes glued together and I知 getting ready to cut the holes for the tweeters, woofers, and ports after I am done veneering. My question is how important to the build and overall sound quality is the offset tweeter. Is it possible to center it or will it change the sound noticeably? I am not sure If when setting up the speakers is the tweeter offset to the inside or outside ..(new to this hobby).
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Old 6th May 2015, 06:23 AM   #2
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Well it will change a little as it is there to help smooth baffle edge diffraction. I don't do it personally as it Amy lower the level of the diffraction bit spreads it out over a larger frequency range which is worse IMHO. I'd rather have a narrow and steep diffraction signature I can more easily do something about. I tend to use wide baffle designs with large roundovers over 300mm dia.
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Old 6th May 2015, 05:42 PM   #3
pkitt is offline pkitt  United States
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Some will tell you that the tweeter has to be either one way or the other, but frankly, it depends on how far apart the cabinets are and your listening position/distance. I suggest you build it as designed then enjoy the process of determining which location for the tweeters, inside or outside, sounds better to YOU.
Paul

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Originally Posted by djverne View Post
I知 working on building the Piccolo kit which I purchased off of Meniscus audio. I have the boxes glued together and I知 getting ready to cut the holes for the tweeters, woofers, and ports after I am done veneering. My question is how important to the build and overall sound quality is the offset tweeter. Is it possible to center it or will it change the sound noticeably? I am not sure If when setting up the speakers is the tweeter offset to the inside or outside ..(new to this hobby).
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Old 6th May 2015, 07:44 PM   #4
sreten is offline sreten  United Kingdom
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Hi,

I always use offset drivers to the inside.
Minor technical reasons why, and it looks right.

rgds, sreten.
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Old 6th May 2015, 08:35 PM   #5
xrk971 is offline xrk971  United States
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I used an offset driver here for a Scanspeak 10F/8424 and the combination provided some of the cleanest and flattest frequency response measurements. The reduction on baffle diffraction really works, and I also like offset to the inside.

Click the image to open in full size.

Frequency response and absolute phase at 0.5m away (1st order BW XO at 350Hz, no EQ is used here at all except for Linkwitz Transform to boost the bass below 100Hz):
Click the image to open in full size.
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Old 6th May 2015, 08:51 PM   #6
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Make you speakers mirror image so you can decide whether in or out is best for you. Personally I like both, often one right after the other. Repeat as necessary.
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Old 6th May 2015, 09:39 PM   #7
djverne is offline djverne  United States
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I have read before that it's ideal to have the panel larger or as narrow as possible. The designer of the speaker kit put a lot of thought into the design. As far as placement, the speakers will be about 80 inches apart mounted on a hefty TV stand. I personally like the look the look of a centered tweeter.
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Old 7th May 2015, 05:34 AM   #8
AllenB is offline AllenB  Australia
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Quote:
Originally Posted by djverne View Post
I have read before that it's ideal to have the panel larger or as narrow as possible.
On a panel the higher frequencies are kept moving forward, the larger the panel the lower frequencies it can control. A narrow panel sends more sound to the walls where it reflects, along with diffraction where that hasn"t been treated.
Quote:
I personally like the look of a centered tweeter.
Either way you'll have the same amount of diffraction. A slight change in its nature. It would be better to round the edges anyway, the tweeter would be good in between.
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