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Multi-Way Conventional loudspeakers with crossovers

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Old 2nd July 2010, 05:54 PM   #11
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I live in Burgundy and there is really good wine wich is quite cheap, you can have really good wine for 3-4€ the bottle it is not the best, but it is quite cheap for the quality and you can visit burgundy if you come for whine.
So I wanna do the same with speakers :d sure good speaker are way more expensive, but I wanna have good speaker and enjoy making them if possible.
Buying 8000€ speakers without knowing how they work, it's like the rich people going around with very expensive cameras not knowing how it really work! ^^
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Old 2nd July 2010, 06:10 PM   #12
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Nice!
So if I take only the boomer of this kit : Haut parleur boomer de remplacement 30,3 cm 150 watts
What midrange, tweeter, crossover and other should I take?

Quote:
spm-303 Qts : 0,25 in sealed enclosure Vb~Vas
bl > 20 for 70euro?
altavoz enigmatica..
may be spec is wrong..
Is this bass not good for sealed enclosure?
Could it be possible to make open loudspeaker, put them near a wall, and put some insulation stuff on the wall?
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Old 2nd July 2010, 07:05 PM   #13
Flaesh is offline Flaesh  Russian Federation
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this kit havn't normal documentation & nobody used it..

Quote:
Originally Posted by Stygmata View Post
..Is this bass not good for sealed enclosure?..
mm very good question!
you are needing to read something elementary about loudspeakers..
or(and) play with simple soft and view\consider results
(you are physic!)
and try to find well documented project(s), may be 2way.. m.b. 300€..
there is a lot in net..

yes, some 4€ wines is good enough
but here is <1€ "wine" in the shop.. I do not\don't want know how and what it is made. and whether it is drinking. but some people drink, drink, drink//
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Last edited by Flaesh; 2nd July 2010 at 07:19 PM.
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Old 2nd July 2010, 08:31 PM   #14
Flaesh is offline Flaesh  Russian Federation
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e.g. cheap and simple ~300€(??) AudioVidioPhilia: Building a pair of Adire HE12.1 Speakers
almost the same, not cheap 4700 WLM das Team
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Last edited by Flaesh; 2nd July 2010 at 08:56 PM.
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Old 2nd July 2010, 09:38 PM   #15
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This 300€ Speaker look very nice altough I can't find where to order it ><
And I don't really understand how it's made.
Would the Gainclone DIY amps be appropriate for these speakers? ^^
There's one box for the woofer which has good insulation and a second box for the tweeter which is made like bass reflex?
All these DIY stuff is so exciting!!! :d
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Old 3rd July 2010, 07:25 AM   #16
Flaesh is offline Flaesh  Russian Federation
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1. if somebody can't googling "eminence beta 12cx" - purchasing of wlm diva seems good straight way for this person..
2. let read something (not all) of 89 300 000 google results for how loudspeaker work. (0,21 s)
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Old 3rd July 2010, 08:11 AM   #17
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Im very happy with my Ikea salad bowls speakers, post of build can be found here:

Ikea spherical speakers, first build done.

There were some good thoughts of putting in a full range driver (Alpair 7 springs to mind).

The bowls are not that not cheap uk £12 ea, so £48 on the cabinets alone, but there perfectly engineered, only have to shave off a slice for the driver, and can be purchased in most cities around the world.

Here was my breakdown:

Cost:

Bowls £12ea, = £48
Mids x2, = £35
tweet x2 = £22
Binding posts x4 = £5
Screws, glue sand paper = £5

£115 total =

about 140 Euros.

Good luck,

Take pictures.
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Old 3rd July 2010, 12:28 PM   #18
bjorno is offline bjorno  Sweden
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Quote:
Originally Posted by Flaesh View Post
spm-303 Qts : 0,25 in sealed enclosure Vb~Vas
bl > 20 for 70euro?
altavoz enigmatica..
may be spec is wrong..
Hi Stygmata,all

You're right Flaesh,the given specification for this 12” driver is not trustworthy(starting with the Compliance value).
If made consistent for the fundamental T/S parameters,i.e.: If the fs,Qts,Vas is correct and put into a closed box of min rek. Qtc = 0.5, the f-6dB would be about 80 Hz in a stuffed box of 1 cu. ft. or 28.3L.

A ported box using consistency checked parameters tuned to ~fb 32 Hz in a 47.2 L (1.67 cu. ft.) where the port is dia. 3” and 6” long (Qt= 0.397) would have a f-3dB at about 32 Hz.

My recommendation Stygmata is: Build two 28.3 L closed boxes and add at least one T-TQWT using an additional SPM-303.

b
Attached Images
File Type: jpg SPM-303.JPG (420.6 KB, 75 views)

Last edited by bjorno; 3rd July 2010 at 12:31 PM.
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Old 3rd July 2010, 12:41 PM   #19
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Yes ,stick to your first pick ...it was obvious !
Bjorno , would you mind explaining what's a T-TQWT (specially the first "T") ?!

Last edited by picowallspeaker; 3rd July 2010 at 12:53 PM.
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Old 3rd July 2010, 01:00 PM   #20
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Stygmata,

try to look for very good projects by Visaton - Lautsprecher und Zubehör, Loudspeakers and Accessories / Visaton - Lautsprecher und Zubehör, Loudspeakers and Accessories .
I think you can find what are you looking for.
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