Unknown 3" drivers - Can you do anything with 'em?

[Zeeall]

Unknown 3" drivers - Can you do anything with 'em?

I've got a pair of three inch drivers of unknown specifications it says

"JB
1113-490
4 ohm 5W"

on the back.

I happen to know that they come from a bass reflex speaker

I have limited knowledge when it comes to speaker design but i would like to build something with them (since i got them for free), is there any "universial" design that could work?


Thanks in advance, Zeeall

Pics coming shortly!

(Sorry for my bad english)

 

[planet10]

Pictures would help a lot... with so many OEM drivers the numbers sometimes don't tell us much.

dave

 

[Zeeall]

Here are the pics!

I think the drivers might come from computer speakers. They are probably "crap" but it could be fun to try to build something with them

 

[Zeeall]

After some investigation i have found out that they come from IBM Infinity computer speakers. but i have no specifications on them.

 

[planet10]

That probably means they were targeted at small bass reflex boxes.

Are you wanting to get as much bass as possible out of these or will they have help on the bottom?

dave

 

[Zeeall]

I just thought it would be fun to build my own speakers instead of buying them, but since they are from computer speakers i will probably not do anything with them (unless you got some good idea).

 

[irbow]

There're lots of DIY speaker sites try:
http://www.partsexpress.com/projectshowcase/homeaudio.cfm
or
http://www.mhsoft.nl/default1.asp

And search around this site.

 

[planet10]

I just thought it would be fun to build my own speakers instead of buying them, but since they are from computer speakers i will probably not do anything with them (unless you got some good idea).

In that case your best bet is a smallish ~2 liter sealed or aperiodic enclosure. The drivers can be tweaked (after you get them in cabinets) which will give a good feel for what that does.

You can build cabs out of wood, or get cretaive with a found object... i've always thot these were an object waiting for an application

http://www.ikea.com/webapp/wcs/stor...94*15696&storeId=3&catalogId=10103&langId=-15
IKEA | Home | Decoration | Bowls, dishes & vases | Bowls & dishes | BLANDA bowls series

2 of these larger ones in a sphere would be just about the right volume,

Ceramic pots, coffee cans, go crazy...

dave

 

[v-bro]

PVC

 

[Zeeall]

mm, pvc pipes looks like fun!

@ planet10, what size wooden bowl do you mean? (there are several different sizes)

 

[planet10]

biggest one... 20 cm D depending on how thick the wood is, and the width of the attachment ring (0=glue them together)... pi*r^3 ~ 2 litres



dave

 

[planet10]

http://www.diyaudio.com/forums/showthread.php?postid=991882#post991882

An externally hosted image should be here but it was not working when we last tested it.

http://www.diyaudio.com/forums/showthread.php?postid=989942#post989942

An externally hosted image should be here but it was not working when we last tested it.

dave

 

[v-bro]

I bet the wooden bowl is steadier, but PVC is cheap and easy....

 

[Zeeall]

I doubt i can hear a difference between pvc pipe and wooden bowl with cheapo computer speaker drivers

 

[Zeeall]

The guy that gave me the drivers managed to find the cabinets for them, they are made from 2-3mm thick(thin? lol) plastic, bass reflex design.
if i made bass reflex cabinets in the same size (same size as in same interior cc) out of, say 12mm mdf, would it sound better? (i assume so since the original cabinets are fairly flimsy). how can i measure the size of the original cabinets?

 

[ovy]

Those speakers are Jazz Speaker. (JS) Maybe you can get more info about them e-mailing the producer.

 

[bigwill]

Use them as "tweeters" on an open baffle crossed over at 300Hz to an eminence beta 15