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Old 11th July 2012, 11:26 PM   #1
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Default Looking for woofer to Morel ET-338

Hi,
I'm looking for woofer to about 200-220$ to pair with Morel ET-338.
I want to make some big compact cabinets (max 22-24 liters).

For now I found couple of interesting drivers:
Seas W18E001, Scan-Speak Revelator 4531/8531, Eton 372/375/7-202.

Etons seem to be interesting, but 372 and 375 are some old constructions so maybe 7-202 with newer motor could be fine?

Seas have very good parameters but some say that have thin bass...
From Revelators 4 ohm version should be better for smaller cabinet than 8ohm.

Or maybe some another driver?
Thanks for any suggestion.
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Old 11th July 2012, 11:53 PM   #2
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The 8531 is one of the best 6.5" hifi drivers ever made, superb measured performance, works well in larger cabinets and goes low. It's also got a nice smooth frequency response that will ease crossover design.

The W18E is also a fantastic driver but due to its metal cone and low break-up requires a very low xover point that doesn't suit all tweeters.

Do you have subs?
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Old 12th July 2012, 01:57 AM   #3
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Why not a Morel??
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Old 12th July 2012, 02:21 AM   #4
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Quote:
Originally Posted by sideways View Post
Why not a Morel??
I figured that the original poster already had them, but if not that does make things considerably easier.

Zaph|Audio - ZRT - Revelator Tower
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Old 12th July 2012, 06:29 AM   #5
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Morel have good woofers but I think that there are better drivers like mentioned magnesium Seas or Revelator.

5th element good point about W18 breakup. This driver is perfect for some 3 way with some good tweeter for low xover point, but Morel ET-338 is not perfect candidate for that becouse of small Xmax. The ideal wolud be Supreme Morel Tweeter, but this is for another topic.

What about Eton? I found that Aurum Cantus AC165/50C2C could performer well, but not to much info in net about this driver.
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Old 12th July 2012, 12:57 PM   #6
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Originally Posted by nonameplum View Post
This driver is perfect for some 3 way with some good tweeter for low xover point, but Morel ET-338 is not perfect candidate for that becouse of small Xmax. The ideal wolud be Supreme Morel Tweeter, but this is for another topic.
The Morel ET338 and supreme tweeters use the exact same replacement diaphram. The only difference between the two tweeters is the rear chamber and magnet. I owned both.

The Morel works well low in frequency. Just as any other tweeter, how loud you want to play it determines the suitable crossover frequency.

The Seas P18, an 8ohm unit, which is on sale at Madisound has no break-up and can pretty much cross anywhere. They are about $140 for the pair. 2400Hz would be about the highest due to center to center spacing.

If its a steep LR4 and/or active crossover, the Dayton RS180-8 is a great match and has really awesome midbass in a sealed box. That would be at 1900 to 2000 4th order. That combo works really well. I used it personally.

The ET338 is a great tweeter and a rare 8ohm unit in these days where so many great tweeters are 4 ohms.
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Old 12th July 2012, 03:13 PM   #7
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Quote:
Originally Posted by SpinMonster View Post
The Morel ET338 and supreme tweeters use the exact same replacement diaphram. The only difference between the two tweeters is the rear chamber and magnet. I owned both.

The Morel works well low in frequency. Just as any other tweeter, how loud you want to play it determines the suitable crossover frequency.
This isn't quite true, the diaphragm/coil assembly might be the same but the rest of the tweeters are not. As nonameplum mentions, the xmax of the ET338 means it is not suited to really low xover points.

If you look at the datasheets you will see that the coil in both tweeters is 2.7mm in height. The ET338 has a front plate thickness of 2.5mm, this is an overhung design with only 0.1mm of linear excursion. The supreme on the other hand has a front plate thickness of 4.2mm, this is an underhung design with 0.75mm of linear excursion each way. This is the largest xmax I've ever seen for a 28mm dome.

Quote:
What about Eton? I found that Aurum Cantus AC165/50C2C could performer well, but not to much info in net about this driver.
Zaph has measurements of a great number of 6.5" drivers on his website. Then he has several more tests on his blog. He hasn't measured that specific AC woofer, but he has measured the AC165/50CK. This is a great mid/bass except for the break-up @ 3.5k. This break-up is fairly benign mind you as in it doesn't really screw up the non linear distortion like the SEAS drivers do, but it will definitely need notching out if you go with a ~2.5kHz xover.
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Old 12th July 2012, 05:00 PM   #8
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This is the largest xmax I've ever seen for a 28mm dome.
Exactly this tweater have very large xmax. Maybe Supreme and ET are created with sort of the same elements but xmax is totaly different.

I strongly wonder about Eton 375 or 202. Thay have hexa cone that are stiff but without breakup like aluminium drivers.
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Old 12th July 2012, 05:18 PM   #9
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The usual tests for harmonic distortion of Eton drivers has always resulted in less then what you'd expect for a driver in that price range. I agree that the hexacone material looks quite interesting, but the motors of the Eton drive units aren't of the same quality as the SEAS, Scan or the Aurum Cantus drivers.

I have always been confused as to why Eton don't improve their motors up to modern standards, the only driver that appears to have been is the symphony mid driver, the one without the hexacone.
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Old 12th July 2012, 05:38 PM   #10
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What about USHER AUDIO 8948A? Very low disortion and Fs, big SD for 7", a little bit heavy moving mass so mids may not be as good as Magnesium Seas or Eton but should get along.

But at real comparision it is the save sound quality like Etons or Seas Excel?
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