SEAS 2way

tpsorin · 6th July 2007, 07:02 PM

I am planning to build a 2way enclosure using SEAS drivers.

The plan is to use CA18RLY + 27TFFC, ~2200Hz crossover.
Can this two drivers work together? ( I'd like 6db electrical crossover)

The room is ~4x5m (i hope it will be ~4.5x6m in 1-2 years).
This will be used mainly for music: Rock, Jazz, Classic.

What do you think about this combination?
Is the bass from CA18RLY enough for this type of music?

Regards,
Sorin

tinitus · 6th July 2007, 07:31 PM

You like to try 6db filter ..... better go for this one then

http://www.monacor-spain.net/modules...ticulo=SPH-176

owdi · 6th July 2007, 07:44 PM

I think 1st order @ 2khz is a bad idea, because you are too close to the fs of the tweeter.

Dan

Tenson · 7th July 2007, 01:10 AM

And you will probably get horrid lobbing. Go 2nd order electrical and you will be very happy.

gbyleveldt · 7th July 2007, 02:30 AM

I would rather use the 27TDFC if you want to go for such a low XO point

ermes · 7th July 2007, 07:21 AM

infact the 27TDFC is wonderfull for its price.

very intresting tw.

b.r.

tpsorin · 7th July 2007, 09:04 AM

Yes, 27TDFC looks good.

I don't know anything about Monacor. But Monacor store is ~200m from my home.

I will make them a visit.

Another question about woofer: is there a big difference between 15cm and 18cm woofer in low frequency? The 15cm driver seems easier to cross in a 2way.

ermes · 7th July 2007, 10:11 AM

about 15 and 18 comparison you can simulate the loading with a simulation software and see the result.

sure that the 15cm has better change to crossingover with a tw,but also a 18cm is not so bad.
at the other side the 18 goes low better.

b.r.

nikonguy · 7th July 2007, 03:39 PM

Hi,

Thought you might be interested in a Seas 2way with the CA18RNX & 27TFFC. Bjorn Idland, a technician at Seas Norway posted the design a while back. Check this thread for 'bidland', about halfway down. The zip file attachment has a Word document with the crossover and the response.

Would like advice on my new Seas project

Best,

Steve

tpsorin · 8th July 2007, 04:22 PM

Any significant advantage can be gained by using a midrange? (2.5 or 3way)
I am thinking o MCA15RCY or MCA12RC

I would like to have a large sweet spot. What factors have influence of this? Baffle? Crossover ?

Thanks!

6th July 2007, 07:02 PM	#1
tpsorin diyAudio Member Join Date: Jun 2005 Location: Timisoara	SEAS 2way I am planning to build a 2way enclosure using SEAS drivers. The plan is to use CA18RLY + 27TFFC, ~2200Hz crossover. Can this two drivers work together? ( I'd like 6db electrical crossover) The room is ~4x5m (i hope it will be ~4.5x6m in 1-2 years). This will be used mainly for music: Rock, Jazz, Classic. What do you think about this combination? Is the bass from CA18RLY enough for this type of music? Regards, Sorin

7th July 2007, 02:30 AM	#5
gbyleveldt diyAudio Member Join Date: Jun 2006	I would rather use the 27TDFC if you want to go for such a low XO point __________________ The walls between art and engineering exist only in our minds - Theo Jansen

7th July 2007, 03:39 PM	#9
nikonguy diyAudio Member Join Date: Feb 2003 Location: Silicon Valley	Re: Seas 2way Hi, Thought you might be interested in a Seas 2way with the CA18RNX & 27TFFC. Bjorn Idland, a technician at Seas Norway posted the design a while back. Check this thread for 'bidland', about halfway down. The zip file attachment has a Word document with the crossover and the response. Would like advice on my new Seas project Best, Steve

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6th July 2007, 07:31 PM	#2
tinitus diyAudio Moderator Join Date: Nov 2005	You like to try 6db filter ..... better go for this one then http://www.monacor-spain.net/modules...ticulo=SPH-176

6th July 2007, 07:44 PM	#3
owdi diyAudio Member Join Date: Sep 2003 Location: Bellevue, WA	I think 1st order @ 2khz is a bad idea, because you are too close to the fs of the tweeter. Dan

7th July 2007, 01:10 AM	#4
Tenson diyAudio Member Join Date: Feb 2006 Location: Kent	And you will probably get horrid lobbing. Go 2nd order electrical and you will be very happy.

7th July 2007, 07:21 AM	#6
ermes Account disabled at member's request Join Date: Nov 2003	infact the 27TDFC is wonderfull for its price. very intresting tw. b.r.

7th July 2007, 09:04 AM	#7
tpsorin diyAudio Member Join Date: Jun 2005 Location: Timisoara	Yes, 27TDFC looks good. I don't know anything about Monacor. But Monacor store is ~200m from my home. I will make them a visit. Another question about woofer: is there a big difference between 15cm and 18cm woofer in low frequency? The 15cm driver seems easier to cross in a 2way.

7th July 2007, 10:11 AM	#8
ermes Account disabled at member's request Join Date: Nov 2003	about 15 and 18 comparison you can simulate the loading with a simulation software and see the result. sure that the 15cm has better change to crossingover with a tw,but also a 18cm is not so bad. at the other side the 18 goes low better. b.r.

8th July 2007, 04:22 PM	#10
tpsorin diyAudio Member Join Date: Jun 2005 Location: Timisoara	Any significant advantage can be gained by using a midrange? (2.5 or 3way) I am thinking o MCA15RCY or MCA12RC I would like to have a large sweet spot. What factors have influence of this? Baffle? Crossover ? Thanks!

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