How big casing for loudspeakers?

[Decriptor]

Hello,

I have a little problem here. I have found some old loudspeakers. Now I would like to put them in a casing, but I don't know how big casing I'm supposed to make. I don't have any data about the speakers I can just tell to you what that they are Jensen J310TX /150W Peak power, 45W Contionous power, 92 dB Sensitivity and I think they are 6x9 inch big.

Please help me, thank you.

[Cal Weldon]

Hi, being that they are a car speaker, often intended for back deck mounting, just about any large box (read 3 cu ft or more) will do. What is it you are planning to do with them? That will be important to know as you may get away with a much smaller box depending on the implementation.

[Andersonix]

What Cal said: Big sealed box.

Plus if these are like all other old Jensens I've seen, the foam will be hard or rotten and not worth using or taking the trouble to make or find a box.

[Cal Weldon]

Tosh, I agree.

Decriptor, poke your finger on the surround foam and see what happens. If it fails, you have saved yourself the time building the boxes as Tosh mentioned.

[Decriptor]

I will use the speakers for playing music from my MP3 player. I've already tested them and they play music OK for me. I know they are not some high quality speakers.

Now it would really help me if someone told me how big sealed box I have to make for each speaker. Thank you.

[MadMutt]

And I quote

"just about any large box (read 3 cu ft or more) will do. What is it you are planning to do with them? That will be important to know as you may get away with a much smaller box depending on the implementation."

Thanks.......

[Cal Weldon]

Meaning that if you plan to add a woofer now or at a later dater date, the box can be made smaller. You will sacrifice the low end but the woofer will look after that. If you are running them alone, put them in the largest box you can handle in the room. Otherwise scale it down to fit. Just keep in mind that as you get smaller the bass will suffer.