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Old 2nd October 2004, 05:08 PM   #1
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Default Midrange for my Uberspeaker?

I just bought a pair of Scan-speak R2904-7000 Tweeters, I have been leaning toward the Eton 11" woofer, but I am still up in the air regarding a midrange driver.

My choices are:
Eton 5"
Audax Aerogel 5"
Audax Carbon Fiber 5"
Scan-Speak 15m/....
Seas Excell 15cm Midrange
Seas Excell 15cm Magnesium Mid/Woofer

I think the 5" is the way to go but, I may be better off with a 6", I don't really know.

I am also still up in the air over wether to use 2-8" 2-10" or 1 10"-11" Driver in the bass.

I haven't seen the Eton used as a mid in any comercial designs. I have seent he Audax units used extensively in VonSchweikert designs. I almost never see a 5" Scan-Speak and also almost never see Seas used as midrange drivers.

Please Advise....
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Old 2nd October 2004, 06:18 PM   #2
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From an educated guess point of view I would lean towards the scan and seas drivers. From a technical point of view a rigid cone has plus points over the others because it lacks break up in its pass band. But its the sound that matters. I use the W15CY as a midrange and like it a lot, I chose it because of its rigid cone, but I have not got anything to compare it agaisnt directly.

I know it sounds better then the peerless 850467 poly cone, which is no slouch in itself. And it also sounds much better then the AP100ZO audax aerogel drivers I have but that comparison is unfair.

How do you like you sound?
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Old 2nd October 2004, 06:31 PM   #3
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Maybe you should consider some of the Fostex product,
available from Madisound.
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Old 2nd October 2004, 07:19 PM   #4
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I'm with Nelson, i always like a midrange that is extended enuff that you can enjoy it without the tweeter & the woofer. Gives you a lot more XO flexibility. The Jordan JX92 or JX125 also should be included on your list.

For woofers i always like to use 2 in push-push configuration.

dave
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Old 3rd October 2004, 10:02 AM   #5
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(sorry for my english)
IMHO and direct experience the audax130 HDA (prestige series only)
sound very very natural. The others not!
But the 11 eton is very critical for a 3 way (see avalon eidolon and others: good enough but not outstanding,IMHO.)
I see a big work for your x-over!! .
Hi all !
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Old 3rd October 2004, 10:22 AM   #6
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Of those you mention Id recommend Eton 5" and Excel 5" due to good cone behaviour and lower distortion than the others. Also check out Accuton C90.

/Peter
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Old 3rd October 2004, 11:28 AM   #7
SY is offline SY  United States
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I've had excellent experience with the better Audax 100mm aerogels (HM100Z series). My last project used a pair in an MTM, crossed over at 200 and 3500 Hz. I do not like the breakup behavior of the carbon-fiber drivers.

That said, I'll admit to having some Fostexes on order. The disadvantage of the wide-range scheme is control of horizontal polar pattern; if you're willing to do some work on your room (or you've got a soccer stadium-sized listening room like Nelson does), that's less of a consideration.
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Old 3rd October 2004, 06:38 PM   #8
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You'll need a 12dB x-over at about 3200Hz to stay within the +/- 0.2mm linear excursion limit of the tweeter, for a max SPL of 110dB@1meter.

How high are you planning to cross the woofer?
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Old 3rd October 2004, 07:10 PM   #9
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I will be using an active crossover to find my crossover points and slopes. Then I will transfer these points to a passive design. If all else fails I can allways switch to an easier tweeter to work with such as a S-S 9700 or a Seas Excel. I am finding though that if you ask 5 people you will get 5 distinct answers. I was oringinally going to use a scan speak, but then people were telling me that it wasn't a very good midrange. Then I was goingt o use the Audax Aerogel, and people told me that it had no resolution. so then I was going to match the woofer and use an Eton. And everyone kept recomending the Seas wich seems really overpriced for a plain poly cone driver. I am also hesitant becasue the copper phase plug will look out of place.


Still really confused.....
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Old 3rd October 2004, 08:01 PM   #10
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Default Re: Reply

Quote:
Originally posted by mp006ltk
I am also hesitant becasue the copper phase plug will look out of place.


Still really confused.....



the phase plug is half of the reason i like the excels!
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