Tweeter choice for A-piller "glass instal'

[Only The Best 10+ year member]

hello, i am going to be taking out my a-pillers and fiberglassing for either 2 tweeters or (2) 3" speakers... i have not seen many in the pillers but i wanted to get an opinion... i need to buy 2 sets of tweeters or 1 set of speakers... my budget is

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[mlstrass 5,000+ posts]

what mids are you matching them up with?

I run these in the A pillars...

The Madisound Speaker Store

 

[Only The Best 10+ year member]

i feel like those would seem to cause trouble....i was aimin towards somehting that looked kinda like Focal Audio TN K New Car Tweeters from K2 Power Series | eBay

 

[mlstrass 5,000+ posts]

cause trouble?

They sound very nice and aren't overly bright for a metal dome tweeter. Mounting depth isn't much, so easy to glass. I have them firing across at each other as they play very well off axis.

 

[Only The Best 10+ year member]

what causes them to sound differently when off axis?

 

[mlstrass 5,000+ posts]

what causes them to sound differently when off axis?

Some tweeters such as ring radiators will lose a lot of output off axis...

 

[calebkhill 10+ year member]

Why not a small set of mids with those tweets since your fiberglasing.

 

[Only The Best 10+ year member]

Why not a small set of mids with those tweets since your fiberglasing.

what kind of mids did you have in mind... I just didn't want to go too big because I have yet to see any in real life and wanted to keep a semi-low profile...

 

[keep_hope_alive Premium Member]

some 2" Peerless or Vifa drivers work well in dash/apillar installations. I've tried several and liked them.

The Madisound Speaker Store]Madisound 2" full range drivers

]url=http://www.parts-express.com/cat/midrange-midbass-full-range-speakers/16?kg=497|3911]PartsExpress 2" full range drivers[/url]

with a 2" mid you can go smaller on the tweeter and use a higher crossover point (6 or 8kHz). so then a 5/8" or 3/4" tweeter is sufficient. the 2" drivers can easily play down to 300Hz with enough airspace.

you need to evaluate aiming and placement first. don't assume you'll get it right on the first attempt. what looks good cosmetically might not work well acoustically. I recommend you do some mockups with non-hardening clay before you finalize a fiberglass form. you can even use the clay mock-up as the mold for the fiberglass.

i've tried off-axis tweeters and found they caused a narrowing of the sound stage and also reduced detail for the nearest tweeter. it makes sense from a localization standpoint but you still want the detail.

you don't want/need two tweeters per side as they will interact in a negative way, one good tweeter is sufficient.

 

[Only The Best 10+ year member]

some 2" Peerless or Vifa drivers work well in dash/apillar installations. I've tried several and liked them.
The Madisound Speaker Store]Madisound 2" full range drivers

]url=http://www.parts-express.com/cat/midrange-midbass-full-range-speakers/16?kg=497|3911]PartsExpress 2" full range drivers[/url]

with a 2" mid you can go smaller on the tweeter and use a higher crossover point (6 or 8kHz). so then a 5/8" or 3/4" tweeter is sufficient. the 2" drivers can easily play down to 300Hz with enough airspace.

you need to evaluate aiming and placement first. don't assume you'll get it right on the first attempt. what looks good cosmetically might not work well acoustically. I recommend you do some mockups with non-hardening clay before you finalize a fiberglass form. you can even use the clay mock-up as the mold for the fiberglass.

i've tried off-axis tweeters and found they caused a narrowing of the sound stage and also reduced detail for the nearest tweeter. it makes sense from a localization standpoint but you still want the detail.

you don't want/need two tweeters per side as they will interact in a negative way, one good tweeter is sufficient.

so putting the tweeter and the midrange in the same airspace isn't going to hurt the tweeter?

 

[keep_hope_alive Premium Member]

so putting the tweeter and the midrange in the same airspace isn't going to hurt the tweeter?

the tweeter is closed back so it won't be affected by a midrange. they can have the same enclosure.

this is a long read but has a lot of pictures.

http://www.diymobileaudio.com/forum/technical-advanced-car-audio-discussion/65061-improve-your-soundstage-$2.html

 

[Only The Best 10+ year member]

so what kind of amplifier do I need to use with tweeters considering they have a 12 rms -50 max? and would I have to use separate crossovers for them considering starting at 3k frequency

 

[keep_hope_alive Premium Member]

so what kind of amplifier do I need to use with tweeters considering they have a 12 rms -50 max? and would I have to use separate crossovers for them considering starting at 3k frequency

any low THD amp will do, the same amp that powers the smaller full range drivers is sufficient, and you can simply put a non-polarized cap on the tweeter (2-4uF or so depending on tweeter impedance).

the tweeter crossover needs to be coordinated with the woofer mounting locations and frequency response. you want to avoid gaps and overlaps.

 

[nguoitrongbao3]

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[Only The Best 10+ year member]

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