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Old 12th April 2004, 08:27 PM   #1
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Question High efficiency 2 way using Eminence Alpha6 + Horn tweeter

I need some help with a speaker design. Basically I want to build a pair of 2-ways using the Eminence Alpha 6 as a midwoofer. I am interested in high sensitivity and decent fidelity. The problem is I can't find a tweeter to match the Eminence's high sensitivity, which is around 100db/watt. The closest I have found are horn tweeters and some domes with around 95db's efficiency. I need some guidance, here are some spec sheets i have found:

http://www.partsexpress.com/pdf/290-400.pdf - Eminence Alpha 6 data

The tweeters:

http://www.partsexpress.com/pdf/277-406.pdf

http://www.partsexpress.com/pdf/264-578.pdf

http://www.partsexpress.com/pdf/264-568.pdf

http://www.partsexpress.com/pdf/276-106.pdf

http://www.partsexpress.com/pdf/264-570.pdf
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Old 12th April 2004, 09:40 PM   #2
sreten is offline sreten  United Kingdom
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A decent horn loaded PA tweeter hits 105dB/W +.

First one I came across :

http://www.partsexpress.com/pe/showd...number=260-083

Whats your problem ?

sreten.
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Old 12th April 2004, 09:43 PM   #3
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Quote:
A decent horn loaded PA tweeter hits 105dB/W +.
109 to 110 dB @ 1W :


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Old 13th April 2004, 12:15 AM   #4
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Thanks for the replies.

I am looking at building a high efficiency small monitor type 2 way speaker. The problem is that I would prefer to use a regular tweeter, not a horn. I need help with the cabinet dimensions and crossover design. I know this is very complicated and few people have the time/knowledge to come up with a good design. I am a computer engineer and have taken some electric circuit theory. Where are some good tutorials and software to get started??
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Old 13th April 2004, 12:18 AM   #5
sreten is offline sreten  United Kingdom
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After baffle step correction (google or search)
you'll realise you only need a 94dB/W tweeter.

sreten.
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Old 13th April 2004, 12:19 AM   #6
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no horn, take a ribbon:
95 to 100 dB/1W

http://www.orcadesign.com/companys%2...rs/raven1.html
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Old 13th April 2004, 12:29 AM   #7
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till, check out the power handling.
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Old 13th April 2004, 03:40 AM   #8
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Bump!
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Old 16th April 2004, 12:00 AM   #9
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bump again
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Old 16th April 2004, 10:19 PM   #10
DeonC is offline DeonC  South Africa
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Have you considered the Fostex FT17H or maybe one of it's bigger (and more expensive) brothers (like the FT96H horn supertweeter @ 100dB/W)? These are horn-loaded, but I do think that they will suit your purpose. The Alpha 6 goes quite high so these should be very compatible. Madisound carries a good range of these.

Deon

PS. Are these going to be part of a set of three-way speakers, or are you going to use them with a sub? The Alpha 6 has a very high Fs of 118Hz, so using them alone you won't have much bass.
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