Some months ago I bought a pair of ~6 litre 3 way car speaker boxes for AUD$50. They had a 6.5 inch woofer, 2.5 inch mid and a piezo tweeter. They served their purpose and the boys had taken them and were using them to augment the sound from their video games. I had a pair of empty 98 litre boxes out in the shed that used to house two 10 inch woofers, a 4 inch mid and two 2 inch cone tweeters. The magnets on the woofers were only about 2-1/4 inches diameter so they were absolute rubbish. The mids and tweeters on both boxes were burnt out. A sorry collection indeed. Anyway, I did some T/S measurements on the 6.5 inch woofer mentioned above, and according to WinISD if I put it into these big boxes and left the old midrange hole open at 104mm diameter and 16mm deep it would tune to 52.5 Hz with a nice broad 5dB peak from ~50 to 90 Hz. Not what you might want for hifi but just the ticket for game noises!
Lined the inside of the boxes with some old carpet, made a pair of covers for the old 10 inch driver holes, (laterally offset as you can see in the pic) and hey presto! junk turned into something useful. The bass is very much like an old radiogram with a 12 inch electrodynamic and a tea-chest sized cabinet. Not max fi by any means, but earthy and gutsy to listen to and way good value for money. Hooray for WinISD. Hooray for diy. 🙂
Lined the inside of the boxes with some old carpet, made a pair of covers for the old 10 inch driver holes, (laterally offset as you can see in the pic) and hey presto! junk turned into something useful. The bass is very much like an old radiogram with a 12 inch electrodynamic and a tea-chest sized cabinet. Not max fi by any means, but earthy and gutsy to listen to and way good value for money. Hooray for WinISD. Hooray for diy. 🙂
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Yeah, I tried the building stuff from rubbish thing.. 🙂
I had an old 10inch woofer, its mate had somehow gotten blown 🙄 So, I got a BIG plastic bucket with a lid.. cut a hole in teh top, and mounted the speaker.. Painted it black, and... WHAT A WASTE OF TIME!!! The speaker was total rubbish... well... back to teh drawing board.. 🙂 lol
I had an old 10inch woofer, its mate had somehow gotten blown 🙄 So, I got a BIG plastic bucket with a lid.. cut a hole in teh top, and mounted the speaker.. Painted it black, and... WHAT A WASTE OF TIME!!! The speaker was total rubbish... well... back to teh drawing board.. 🙂 lol
J-series
I have had some good results (and a few bad).
There are a lot of instances where decent drivers were put in really bad boxes.
One of my most pleasing results was a 6" out of a small bookshelf that was much happier in a box that had a 12" (and i still had to make it aperiodic to lower the Q) XOed to a pr of chamberd Audax tweeters i recovered using the Monica Lewinski technique. Good enuff that one of these days i'll actually make them look passably pretty.
dave
I have had some good results (and a few bad).
There are a lot of instances where decent drivers were put in really bad boxes.
One of my most pleasing results was a 6" out of a small bookshelf that was much happier in a box that had a 12" (and i still had to make it aperiodic to lower the Q) XOed to a pr of chamberd Audax tweeters i recovered using the Monica Lewinski technique. Good enuff that one of these days i'll actually make them look passably pretty.
dave
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