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Multi-Way Conventional loudspeakers with crossovers

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Old 4th April 2005, 05:37 PM   #111
Variac is offline Variac  United States
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I think that the scheme that I synopsized from various peoples ideas including my own is a fair varient on the Bose theme.

the satallite units are tiny and you DO need a stand for them usually, and even thought Bose makes it black, the subwoofer DOES exist and needs to be dealt with. So, here is a fuzzy diagram of how it might look. The cube could be 1/2" MDF and still be OK due to the tube voulume, and an MDF cube is a lot easier to make! The tube could be black if it needs to be less obtrusive.

It also looks a bit like a giraffe, and what's cuter than that?
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Old 4th April 2005, 05:52 PM   #112
Colin is offline Colin  United Kingdom
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Hi Dave

Reading through the thread, I was going to suggest the JX53s before someone else made the connection. An aluminium enclosure would be a good way to maximise the internal volume. For added inspiration, take a look at

www.beoworld.co.uk

go to the alphabetical list and look at the Beovox C30/40 or 75. Not as small as Bose but they score high in the Significant Other Approval stakes.

Colin
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Old 4th April 2005, 05:57 PM   #113
Variac is offline Variac  United States
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Here's a scale drawing
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Old 4th April 2005, 09:44 PM   #114
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Quote:
Originally posted by Peter M.
What about this:

You could put the jordan JX92S ...
That speaker is far too wide for this concept.
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Old 4th April 2005, 09:47 PM   #115
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Default Re: Re: Jordan JX53

Quote:
Originally posted by Me Myself

[JS53 ] Might just work. It is just a tiny bit wider than we want ...
Duh. El Stupido here looked at the picture on the Jordan web site and failed to snap that the thing could be mounted with the long dimension vertical. The shorter dimension is only 75mm (a bit under 3 inches), and I think it could be mounted in a box that's only that wide.
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Old 4th April 2005, 10:13 PM   #116
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How about the crossover? Using one of the itty bitty speakers (whichever), the xover will be in the 125 to 180Hz range, one would imagine. If the little speaker (JX53 maybe) has no high pass filter on it, will it beat its poor little self to death trying to play notes below its tuning frequency? Will it produce a lot if IM distortion with no high pass filter?

Ideally, the system would work with an integrated amp/preamp for the mains and a plate amp for the sub.
The only integrated amps I know of that have pre-out and main-in are NAD's. Is it feasible to use just any old integrated amp, or will an active high pass be necessary?
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Old 4th April 2005, 10:31 PM   #117
Variac is offline Variac  United States
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Jordan seems to recommend from .34 l. to 1.0 l. for their 52 drivers.

I can't see that they would work well below 150 hz.
Seems like the subs would be required to be close to the mid /tweet drivers or you are duplicating the Bose prroblem with no low mids. It seems from what I've read recently, most people have decided that its best to cut off a fullrange driver where it crosses to the woofer , rather than let it try to reproduce the low notes. Better to have the high pass filter components on the mid/tweets than all the problems that you mentioned due to them trying to reproduce bass.

Speaking of which, I picked the size of my bass box at 8" square arbitrarily. Maybe it could use a smaller sub driver made for the purpose. I think we need some input (as you requested ) from people as to whether there is a tough little 6", high x-max bass driver that we could put in a small box and equalize. Maybe the box could be 8"x8"x 5" tall. That would look a lot svelter than the drawing I posted! Even if it only went to 70 hz, that would sound pretty good...
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Old 4th April 2005, 11:16 PM   #118
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Quote:
Originally posted by Variac
I think we need some input (as you requested ) from people as to whether there is a tough little 6", high x-max bass driver that we could put in a small box and equalize.

Two come to mind:

The Adire Extremis 6.8 (13mm xmax one-way) - http://adireaudio.com/TextPages/Extr...eFrameText.htm

The Tang Band W6-1139SG (12mm xmax one-way) - http://www.tb-speaker.com/detail/1230_04/w6-1139sg.htm

Hope this helps.

Reece
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Old 4th April 2005, 11:34 PM   #119
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What abot this one...


P-audio TM-6

I don`t know the parameters on this one, but it looks pretty extreme..
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Old 4th April 2005, 11:37 PM   #120
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And it`s not too expensive, in norway it costs 695kr, that`s about 105$
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