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Multi-Way Conventional loudspeakers with crossovers

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Old 13th June 2002, 07:21 AM   #21
griff is offline griff  Australia
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If you are prepared to save a little more, maybe you should look at my latest project, it uses a SEAS H624 and a SEAS H831. Drivers will cost around $250, only requires a really simple cross over and the ideal bass reflex cabinet is about 15litres. If you would like some more info then just let me know.
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Old 13th June 2002, 08:09 AM   #22
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So how much lower should the FS be on the Tweeter, and when AudioFreak said that the Tweeter should be the same as the amps output, does that mean I need a 120W Tweeter.As you can see I am having a bit of trouble making sense of this whole thing.I would really appreciate a link or email with more info on your latest project griff, and what does that $250 get me.So do your responses mean that the Vifa Woofer will be fine.I would also appreciate it if someone could post up the specs for the Woofer & Tweeter that they would use for this amp.

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Old 13th June 2002, 08:40 AM   #23
griff is offline griff  Australia
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Its all very confusing when you start, but it comes together eventually.

Heres a link to the SEAS H624 woofer and the SEAS H831 tweeter.

I must pre warn you about this combo, it does lack the low end, and i wouldn't recommend it for heavy/ alt metal, something that has a large slap bass, really needs to be coupled with a Shiva.

The H624 you can get for about $90 and the tweeter is around $45.

The highlight of this system is the tweeter, its incredible for the money.
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Old 13th June 2002, 08:45 AM   #24
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What I meant is that many manufactures rate their tweeters for system power and not actual input power. Personally I dont like this as they usually use white / pink noise to do the rating and music often varies from this far too much but i suppose it's a decent generalized standard. When looking at tweeters, if the power rating says system power, you should use one of about 120W, if it says input power 25W should be fine
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Old 13th June 2002, 09:42 AM   #25
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Thanks for the links griff.
I just think that these are just a bit too expensive for me, because I still need to get all the other stuff like crossovers and all the other things recquired.
The other thing is that I listen to ALL types of music, most of it is Rock, Alternative, Rap, Dance and Soul,but I also listen to ALL the other types.I dont have any METAL type music like slipknot etc because its 2 heavy 4 my liking.

I dont want to have the strongest possible base, I am looking for a very CLEAR sounding system(i dont want the room shaking, just a clear bass sound).Do you know what i mean?!?

SO, in your opinion, would the Vifa Woofer that I mentioned previously do a good job for this type of setup, or not.
I know that I need to get a Tweeter without the metal cap thing and a lower FS, but how much of a lower FS.
Please Help Me Out Guys!!!

Jeroth
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Old 13th June 2002, 10:55 AM   #26
griff is offline griff  Australia
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The H831 has a Fs of 1200 and the model above, the H881, has a chamber on the back to bring the Fs down to around 900. This suggests crossing over at around 1500-2000Hz. The link can be found Here

The Vifa is an option, although if you matched it with one of the SEAS tweeters above, then you would need to add an L-pad to bring down the sensitivity a little.

By 'clear bass sound', I get the impression that it should be flat to around say 50Hz, and a bass reflex is definately the best choice. With the Vifa, you will get a F3 of around 44Hz, in a 21.9 litre enclosure tuned to 42.8Hz, this means a port length of 108mm with a diameter of 50mm. That would be more then adequate i feel. Do you at any time in the near future intend on building a subwoofer?
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Old 13th June 2002, 02:04 PM   #28
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A major constraint on this project that has so far been overlooked is going to be the fact that Jeroth has stipulated a 0.25 cu ft. enclosure or there about ... this is only about 7.1L
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Old 13th June 2002, 02:12 PM   #29
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Originally posted by AudioFreak
A major constraint on this project that has so far been overlooked is going to be the fact that Jeroth has stipulated a 0.25 cu ft. enclosure or there about ... this is only about 7.1L
WinISD suggests an 11.3 litre box (.399 cu ft) for a sealed system, so .25 cu ft may not be ideal.
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Old 13th June 2002, 02:27 PM   #30
griff is offline griff  Australia
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looks like he'll have to live with a bigger box or we find him another driver.
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