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Old 22nd May 2014, 06:44 PM   #1
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Default Chinese/Taiwan 5 Dual Cone Speakers

Hi Guys! after finishing my build with the 4" dual cone speaker. I thought it would be nice to see what the difference would be with the 5" speaker. So I bought a pair!

I thought it would be a good idea to begin with a new thread to keep discussions separate.

so what I'm not looking for is a paint by numbers job, but since those worksheets for math cad are no longer available and I very much s*ck at math, maybe you guys have some suggestions?
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Old 23rd May 2014, 12:15 AM   #2
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Open baffle? The rear is quite open..
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Old 23rd May 2014, 03:29 AM   #3
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If you don't mind me asking, where do you buy your Taiwanese drivers?
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Old 23rd May 2014, 04:15 AM   #4
ttan98 is offline ttan98  Australia
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Hi,

I bought a pair too because I was quite please with the 4" version. Initial testing suggests there are 2 peaks occurring at 2 different frequencies. I will publish the results over the next few days.
It seems that the Alpair A10 has high frequencies peaks above 6-8khz and users do not use notches to suppress them. Is this true? Can anyone hear these high frequencies harshness? Can anyone/users comment? I saw the A10 FR curve at the Brine Acoustics' website.
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Old 23rd May 2014, 05:05 AM   #5
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Well open baffle looks cool and there seem to be good resultsbut wouldnt be all to practical for me, personally I guess I'll stick with a TL. Although I might try it anyway.

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Originally Posted by perceval View Post
If you don't mind me asking, where do you buy your Taiwanese drivers?
Bought them on eBay but if ive also seen them on aliexpress. I have no idea where they actualy come from but they seem very nice quality. Although mine came with some minor damages from the shipment...

Ttan98, what sort of cabinet do you use?
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Old 23rd May 2014, 07:41 AM   #6
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Default I hope it was not as bad as the "minor" damage I recently recieved..

The drive units actually went back and were replaced...

The whole edge of the baffle had cracked off! Like they had been thrown against the ground..
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Old 23rd May 2014, 11:12 AM   #7
ttan98 is offline ttan98  Australia
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Quote:
Originally Posted by mrneedle View Post
Well open baffle looks cool and there seem to be good resultsbut wouldnt be all to practical for me, personally I guess I'll stick with a TL. Although I might try it anyway.



Bought them on eBay but if ive also seen them on aliexpress. I have no idea where they actualy come from but they seem very nice quality. Although mine came with some minor damages from the shipment...

Ttan98, what sort of cabinet do you use?
I may have to build one myself(difficult for me to buy one off the shelf, e.g. from Parts Exp. from where I live), I will be using it with a woofer/subwoofer in a compact size cabinet.
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Old 23rd May 2014, 11:41 AM   #8
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Since nobody seems to have offered anything, here's an MLTL tuned for some gain through the midbass region.

L = 35in
CSA = 88.5625in^2
Zd = 7in
Vent 13in^2 at the bottom
Stuff 0.75lbs ft^3 & adjust as desired.
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Old 23rd May 2014, 05:23 PM   #9
GM is offline GM  United States
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I 'ran some numbers' in the wee hours, but the MLTL I'd build was so tall, large for the driver size [~2.7955 ft^3/79.158 L net], I figured it would be dismissed out of hand. Looks good in a Fonken style cab though, so figured Dave or you would submit those. BIB is an option also.

Note that the specs work well enough in BR, MLTL RS 40-1354 cab alignments, so if anyone is interested in maybe a sonic upgrade.............

Note too that there's a significant difference in cab alignments if T/S Vs Mms, BL specs are used, so recommend using T/S to hopefully ensure the cab doesn't wind up too small.

GM
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Old 23rd May 2014, 05:49 PM   #10
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Same issue here. I ended up using my fall-back of Qe, Qm, Re, Fs & B*L on the (possibly mistaken) principle that the electrical specs. are usually easier for them to measure & probably more likely to be representative, re-calculating the rest from that.
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