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Multi-Way Conventional loudspeakers with crossovers

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Old 17th August 2004, 09:59 AM   #11
MIKET is offline MIKET  United States
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Default 27TDFC

OK, I'll go with the SEAS 27TDFC for a tweeter, sensitivity is just right, frequency responce looks fine.

If the Davis 13MP5G seems overpriced what other driver could you recomend that is about 91 dB sensitivity and ruler flat from 200Hz -5KHz?
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Old 17th August 2004, 01:19 PM   #12
Zaph is offline Zaph  United States
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Default Re: 27TDFC

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Originally posted by MIKET
OK, I'll go with the SEAS 27TDFC for a tweeter, sensitivity is just right, frequency responce looks fine.

If the Davis 13MP5G seems overpriced what other driver could you recomend that is about 91 dB sensitivity and ruler flat from 200Hz -5KHz?
If it really needs to be 91 db, that narrows your options quite a bit. It's kind of difficult to pick a drop-in replacement, since I've never had one of those alnico Vifas. I'd get Keith's advice on a replacement. He'll know what the rolloff and impedence characteristics need to be if there's any hope of getting a replacement that doesn't need a new crossover. Possibly a standard Vifa M13, although those are only about 88db.
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Old 18th August 2004, 01:38 AM   #13
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Good, that makes sense. I designed a speaker using the Dayton 7" woofers and their silk dome tweeter crossed at 2KHz 4th order electrical on the lowpass. I am aware of the big problems above that range. They are pretty clean sounding, lacking a bit of texture and impact compared to what I'm used to, but definitely well worth the price.
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Old 21st August 2004, 01:21 AM   #14
MIKET is offline MIKET  United States
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Default Davis Acoustics 13MP5G

For $49.63USD how is this overpriced
$50 drivers are reasonable in price when you consider the price of some of the other alternatives out there.
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Old 21st August 2004, 01:37 PM   #15
Zaph is offline Zaph  United States
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Default Re: Davis Acoustics 13MP5G

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Originally posted by MIKET
For $49.63USD how is this overpriced
$50 drivers are reasonable in price when you consider the price of some of the other alternatives out there.
Actually, if that's what it costs, you're right it's not too bad. It must be one of the cheaper ones they make. A while back I browsed the product line and came to the conclusion that the product line as a whole is overpriced for what they are. I just revisted the Davis line at Parts Express. Some are just a little overpriced, but some are insane, like the $360 20TK8.

It seems high efficiency is their specialty. Other than that I don't see anything special about the line. They use cheap distortion inducing cup style spiders rather than flat, and there is no venting under the spider. I haven't seen one of their motors cut in half but I suspect that's nothing special either.

Maybe they are worth it, maybe they are not. I'll just keep my mouth shut about them until I try them, which will probably be never. I'm a solid state guy with a ton of power, so efficient drivers are never a priority.

Note: the Seas MP14RCY/P would probably be a good driver for this application. Very flat, extended and efficient. Also a good value at $41.
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Old 22nd August 2004, 01:24 AM   #16
MIKET is offline MIKET  United States
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Default Thanks

The Seas MP14RCY/P would be a good match for the SEAS 27TDFC tweeter. Going to browse the driver market a bit more but I am quite happy with this pair.
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Old 22nd August 2004, 02:43 AM   #17
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Default New Driver

How about the new SEAS MCA15RCY it looks even better than the MP14RCY/P
http://www.seas.no/seas_line/midrange/h1262.pdf
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Old 15th September 2004, 08:05 PM   #18
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Default DAVIS 13MP5G

If you go to the partexpress page and check out the sample responce curve there is a pretty nasty dip just over 1 kHz.

This is in contrast to the manufacturer data, I think.

Too bad I was kinda hooked on this unit myself.

vH pH
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Old 15th September 2004, 10:08 PM   #19
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Default WOW, your absolutely right

http://www.partsexpress.com/pdf/297-562g.pdf

The DAVIS 13MP5G is definately off my list.
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Old 15th September 2004, 11:39 PM   #20
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Zaph, you refered to the issue of the cupped spider rather than a flat spider in terms of inducing distortion.....could explain that a little further? How can you have a flat spider, when it needs to movwe up and down a certain amount? Thanks. Greg
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