speakers configuration

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sesebe

Member
2011-01-14 8:00 am
Iasi
Hello all,

I want your opinion.

I'm thinking to do a 3 speaker full range with side woofer for a narrow front bafle.
These are the speakers that I want to use:

monacor-RBT-95
celestion-tf0510 or monacor SP-4/60PRO or monacor MS-130
monacor-sp302pa


What you think, good fit?
The filters will be made by me (I have some experince so no problem with this) but I do not know the exact cut frequency in special because of side woofer.

Can you recomend something?

The big questions now is how I can simulate the side woofer?
 
Last edited:
Hi,

Side woofers are generally configured as subs.

And your bass driver is no real subwoofer.

An attempt to mitigate the amount of BSC of the
front drivers by a higher x/o frequency is really
something you can only do by measurements
and listening, I suspect it would sound odd.

rgds, sreten.
 

sesebe

Member
2011-01-14 8:00 am
Iasi
Hi,

Side woofers are generally configured as subs.

Good point. This was may assumption too.

And your bass driver is no real subwoofer.

Maybe but I expect to obtain some bass with SP-4/PRO because the characteristics are fairly linear in low range and has a big linear excursion: +/-2.3mm I want to cross it around 200-250Hz, maybe lower if it is possible (after measurements).


An attempt to mitigate the amount of BSC of the
front drivers by a higher x/o frequency is really
something you can only do by measurements
and listening, I suspect it would sound odd. Maybe but not necessarily.
rgds, sreten.

Not necessarily. I had a pair of speakers like this and after I changed the filters it started to sound very OK, and that with super cheap speakers and in a poor quality box.

I destroyed partially mid speakers and now I'm thinking to made a similar speaker but with much better speakers (but not expensive) and in a verry good box (but again not too expensive).
 

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Audio Physic has a popular line of NARROW(6.7") up to narrow(9") speakers. What is your baffle width goal?
--
With 7" NARROW front baffle, do not forget that the SEALED midrange must have enough Xmax to cover baffle step boost. 5" midbass with Xover 200Hz is best with Fs<40Hz and Xmax>5mm and Xover ~1.8-2kHz
--
With 9" narrow front baffle a SEALED 6" midbass with Xover 1.6-1.8kHz and 140Hz Xover to woofer covers baffle step, and hides woofer position. A 9" baffle allows large radius low diffraction edge treatment.

-------There are better drivers for a narrow, side-woofer 3-way.
-the Monacor RBT-95 is a super tweeter requiring a 6Khz+ crossover, too high for 5" midrange which requires ~2Khz Xover to avoid cone breakup and beaming.

-the Celeston tf0510 looks good for a generic 5" midrange

-the monacor SP-4/60PRO is a decent 4", BUT does not have enough Xmax for baffle compensation, AND requires ~400Hz Xover in a sealed box which might make the listener notice the side woofer position.

-the monacor MS-130 is not good.. only 0.7mm Xmax

-the Monacor SP-302PA has an Fs of 45Hz and 2.5mm Xmax. It is a ProAudio midbass, and not a woofer.
----
Visaton speakers supports the free Boxsim diy-speaker design tool. Visaton also provides over 100 Boxsim diy-designs with complete simulation files. It is in German, but Boxsim can be used with any speaker brand.
 

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  • SB exmaple.jpg
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AllenB

Moderator
Paid Member
2008-10-18 11:31 am
You're considering 4 way, interesting. Why?

To cut a long story short you've seen how easy it is to design a crossover in one dimension (filter design). The next level in crossover design is to move to three dimensions, and begin with with your radiation patterns. This would give a good answer to the above question.

Without this 4 way is just complication.
 

sesebe

Member
2011-01-14 8:00 am
Iasi
You're considering 4 way, interesting. Why?

To cut a long story short you've seen how easy it is to design a crossover in one dimension (filter design). The next level in crossover design is to move to three dimensions, and begin with with your radiation patterns. This would give a good answer to the above question.

Without this 4 way is just complication.

Can you sugest some links for study?
 

sesebe

Member
2011-01-14 8:00 am
Iasi
Audio Physic has a popular line of NARROW(6.7") up to narrow(9") speakers. What is your baffle width goal?
--
With 7" NARROW front baffle, do not forget that the SEALED midrange must have enough Xmax to cover baffle step boost. 5" midbass with Xover 200Hz is best with Fs<40Hz and Xmax>5mm and Xover ~1.8-2kHz
--
With 9" narrow front baffle a SEALED 6" midbass with Xover 1.6-1.8kHz and 140Hz Xover to woofer covers baffle step, and hides woofer position. A 9" baffle allows large radius low diffraction edge treatment.

-------There are better drivers for a narrow, side-woofer 3-way.
-the Monacor RBT-95 is a super tweeter requiring a 6Khz+ crossover, too high for 5" midrange which requires ~2Khz Xover to avoid cone breakup and beaming.

-the Celeston tf0510 looks good for a generic 5" midrange

-the monacor SP-4/60PRO is a decent 4", BUT does not have enough Xmax for baffle compensation, AND requires ~400Hz Xover in a sealed box which might make the listener notice the side woofer position.

-the monacor MS-130 is not good.. only 0.7mm Xmax

-the Monacor SP-302PA has an Fs of 45Hz and 2.5mm Xmax. It is a ProAudio midbass, and not a woofer.
----
Visaton speakers supports the free Boxsim diy-speaker design tool. Visaton also provides over 100 Boxsim diy-designs with complete simulation files. It is in German, but Boxsim can be used with any speaker brand.


Hi LineSource, can you provide more information about these projects?
 
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This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.