speakers configuration

[sesebe]

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?

 

[sesebe]

Hmmm, it looks like I put a too heavy question.
Nobody knows anything.

 

[Sonce]

Choose another woofer with lower Qts.
Mid-to-woofer crossover frequency around 300-400 Hz.
Tweeter RBT-95 should be crossed at 6 kHz.

 

[sreten]

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]

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).

 

[sesebe]

Choose another woofer with lower Qts.
Mid-to-woofer crossover frequency around 300-400 Hz.
Tweeter RBT-95 should be crossed at 6 kHz.

Can you explain a bit why is not good such a speaker?

 

[Sonce]

Declared Qts=0.89 is very high, so vented box is out of question. Also, closed box will have very high Qtc, with boomy bass quality.

 

[LineSource]

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.

 

[sesebe]

Wau, very detaliated answare.
Now, can you sugest some "cheap" speakers for this speakers?

 

[sesebe]

What do you think about this?
The mid filter is complicated but will be simplified during measurements.
I change the woofer.

 

[sesebe]

I change a litle the filtering and updated the speaker list.
monacor-RBT-95
monacor SP-4/60PRO
monacor SP-252PA

 

[sesebe]

diferent filtering with the same speakers:

 

[sesebe]

Another version with diferent mid Monacor MSH-115.

 

[sesebe]

4 ways ???

Hi,

I'm thinking maybe to go to 4 ways speakers.
I'm thinking to these speakers:

tweeter AUDIOPUR MAG8M from 5KHz
dome mid high DAYTON RS52AN-8 1KHz to 5KHz
low mid SILVER FLUTE W14RC25-04 150Hz to 1KHz
woofer MONACOR SP-302PA until 150Hz

​

Some opinions?

 

[sesebe]

The Monacor SP-302PA is not ok for this so I will use (most probable):

​

Visaton W 300

 

[AllenB]

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]

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?

 

[AllenB]

I reserved judgement on the four way.. there are benefits, there are complications. This paper might help.

 

[sesebe]

But about this Audiopur MAG20M what do you think?
It is a good tweeter used from 1(2.5)Khz?

 

[sesebe]

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?