Subwoofer with the box 15-300/8a

[hents503]

Hi.
I got a two the box 15-300/8a loudspeakers.
parameters http://images1.thomann.de/pics/prod/193264_specs.pdf

But i don`d know what type box to built?
I think i want two box.

120L@45hz box ,but then go xmax to long at 40hZ

Need help to good boxes.

Henri.

Bad english skill...

 

[hents503]

Or make G sub?

 

[hents503]

Can The Box 15-300/8a make good bass/sound at the tapped horn?

 

[revboden]

Hi, what do you want to use these for? define good bass?

 

[hents503]

I got mini PA 4x visaton bg20 and now i want a subwoofer.
And i got 2x The Box 15-300/8a

 

[epa]

it wil work in a tapped horn,but it wil be x-max limitted
you wil get aprox 122 db @ 45 hz@100 watt ,~600 ltr box on floor

 

[hents503]

600L box is to big to me..
Other box types?

 

[epa]

simply br box

 

[hents503]

Bandbass or T line ?

Thomann`s have The box TA15 ,15`` and bandbass..

 

[revboden]

small box =300L

Bass reflex tune = 35Hz

port:
Diameter = 15.2cm
Length = 6.35cm

High-pass = 35Hz, Q=2

power = 200w

 

[bjorno]

HI,

FYI, The T/S checked:

b

 

[hents503]

Thanks,but 300L its to big.
I cant transport these boxes if thei are 300L per box

Somwhere 100-130L its normal.
Can this loudspeaker works bandbass type box?

 

[hents503]

Now i made one 320L box@40hz 2loudspeaker one box.

Its so big

Its big its shaking my garage roof but no kick and high SPL...

 

[tb46]

Hi hents503,

This woofer would work in jbell's SS15: http://www.diyaudio.com/forums/subwoofers/170771-single-sheet-th-challenge.html.

Regards,

 

[bjorno]

Now i made one 320L box@40hz 2loudspeaker one box.

Its so big

Its big its shaking my garage roof but no kick and high SPL...

Hi,

You're a quick DIY'r. Did you make a closed box or something else?

Submitting a picture containing more calculations.One of the results: One driver in a 300L closed box is not promising normal sub FR extension but only mid-bass BW, at most.

b

 

[hents503]

I made 1 320L box and there is 2 loudspekers.
Its vented and tuning at 40Hz

Tb46,what do you mean at jbel ss15?
Do you take some link?

 

[tb46]

Hi hents503,

The thread is in the link in Post #14 above, here it is again: http://www.diyaudio.com/forums/subwoofers/170771-single-sheet-th-challenge.html. In the singlesheet thread there a any number of drawings, to begin with try the drawings in: Post #74 in inches or Post #82 in mm dimensions.

Regards,

 

[hents503]

And you think the box 15-300/8a works great by that box?

Can you know some nummers this box, spl min freg..?

 

[hents503]

Cubo 15
You think this box? Thats cool but big..
Can something like that but smaler?

 

[epa]

the cubo 15 is 240 ltrs netto.
if you make that even smaller you wil lose lf extension ,or efficientie.