Volume sharing for a 10 " and 12 " woofs

[domtweaker]

Guys

Can I share the Volume for two Woofers ( 150 Hz down ) .

They are both 4 inch Voice coils but one is a 10" other is 12" same magnets.

I would prefer to do one volume tuned to 25 hz . both drivers are ok with that.

thank you for help .

Good day

[weltersys]

Originally Posted by domtweaker

Guys

Can I share the Volume for two Woofers ( 150 Hz down ) .

They are both 4 inch Voice coils but one is a 10" other is 12" same magnets.

I would prefer to do one volume tuned to 25 hz . both drivers are ok with that.

thank you for help .

Good day

You can share volume, but a larger speaker generally would be better off with more volume than the smaller speaker.

The differing size speakers will introduce a sort of “drone cone”, or passive radiator aspect into the design, tuning won’t be straight forward.

Since both speakers have the same magnet structure, displacement is probably more on the larger speaker, it should use a larger port volume than the smaller speaker.

Using the same gross volume, you can split up the the two speakers with a center divider, and tune both portions to 25 Hz with a port for each chamber.

Using separate chambers will reduce distortion, even in cabinets using the same type of speaker, more so with different size speakers.

[domtweaker]

Thank you

makes it more logical that way

[weltersys]

Originally Posted by domtweaker

Thank you

makes it more logical that way

You are welcome.

By the way, I did put 12" and 15" speakers in the same chamber back around 1972, let's just say that I learned from my mistakes.

[domtweaker]

ha ha that would be an expensive lesson indeed.

I thought these were so close but makes sense with tuning and speed too.

greetings from HOT Canada

[revboden]

Originally Posted by domtweaker

ha ha that would be an expensive lesson indeed.

I thought these were so close but makes sense with tuning and speed too.

greetings from HOT Canada

dom used the "sp**d" word

[djk]

Wilson Audio:



Has one big port out the back.

[Radugazon]

A link with a study full range + woofer :

http://www.fortunecity.com/rivendell...d/dddllqd.html

[domtweaker]

I m sure Wilson divided the cabinet inside even though there is only one port in the rear .

[djk]

Having seen them, stuck my arm in the port, and touched both woofers (Focal), I'd say you were incorrect. Maybe they have changed it for the newer version, I saw the original.

The Speakerlab Model 7 was also this way.



http://myweb.cableone.net/cpwoods/Audiokarma/Model7.jpg