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Old 29th September 2013, 06:02 PM   #21
sreten is offline sreten  United Kingdom
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Hi,

Crossover calculators are always wrong as they don't
include compensation for the baffle step, even if you zobel.

Take a look at : Zaph|Audio - ZA-SR71

rgds, sreten.

Also look at https://sites.google.com/site/undefinition/diy/amiga
The cabinet proportions are nicked from you know who.
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Old 29th September 2013, 06:18 PM   #22
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Basically the Staff is a "redesign" of the Mite, in a floorstanding version, using a bass tuning yielding the deepest F-3 point from the given woofer. X-over is almost the same, but due to the somewhat higher efficiency, the tweeter resistor is a bit less. Make the X-over on a test panel, placed on the top of the box, so you can easily change the values, and expriment until you get the best sound for your taste and system. Actually this is how I did most of my design work.... Microtuning is essential, sometimes tenth of ohms, and 0.1 uf changes in the values can make or break your day. Most of these speakers were designed using a Roksan Xerxes t'table , Dynavector Karat 23 Ruby cartridge, Artemiz tonearm, a self designed tube preamp, and Roksan ROK S-1 power amp (one of my all-time favourite). Your system choice might call for slightly different values tough..... Good luck, if you need more help, send me PM.

Last edited by dragonweed; 29th September 2013 at 06:21 PM.
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Old 29th September 2013, 08:58 PM   #23
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dragonweed,
Do you mind I ask you where can I read more info (in book or "net" form) on the QM3 alignments, you mention on post #17. Can read English, French, Italian, Spanish, Portuguese. I will give a second read at your posts, they are interesting. Regards.
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Old 29th September 2013, 09:35 PM   #24
sreten is offline sreten  United Kingdom
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Quote:
Originally Posted by dragonweed View Post
Speaker design software are a good starting point, but usually
have limited use when it comes to real-world drivers.
Hi,

Not true at all as soon as you ignore the suggested alignments
and make up your own bass alignments, which you can easily.

rgds, sreten.
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Old 30th September 2013, 03:02 AM   #25
AllenB is offline AllenB  Australia
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Quote:
Originally Posted by sreten View Post
Crossover calculators are always wrong as they don't
include compensation for the baffle step, even if you zobel.
Baffle compensation cannot correct for the baffle either though. Even partial compensation won't correct it. It is an in depth subject.
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Old 30th September 2013, 11:44 AM   #26
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Here is the article on the QM3 alignment. I think it is the "secret weapon" of reflex enclosure design, because it gives you almost limitless possibilities in choosing a box size and tuning for a given driver, with minimal low frequency ripple.
Attached Files
File Type: zip 2013-09-30.zip (851.0 KB, 26 views)

Last edited by dragonweed; 30th September 2013 at 11:47 AM.
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Old 30th September 2013, 02:44 PM   #27
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Quote:
Originally Posted by dragonweed View Post
Here is the article on the QM3 alignment. I think it is the "secret weapon" of reflex enclosure design, because it gives you almost limitless possibilities in choosing a box size and tuning for a given driver, with minimal low frequency ripple.
Hi, and thanks.
Is that the ""Résonateur ELIPSON""?!
Regards.
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Old 30th September 2013, 10:43 PM   #28
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I've been trying to get hold of some of the Tonsil drivers, but the couple of Polish companies who sell them haven't got back to me. Anyway, I also heard that Tonsil went bankrupt! is this true, and if so, what other drivers have very near characteristics as the drivers mentioned earlier in this post.

Or does anybody know where I can buy the Tonsil drivers from and ship to the UK?
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Old 1st October 2013, 04:51 AM   #30
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You should also consider the SB Acoustics 15 series midwoofers, which are excellent performers in a cca.1/3rd cu.ft. vented box. Falcon Acoustics used to sell them at reasonable prices. SB Acoustics :: MIDWOOFERS
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