I couldn't bear to throw them away...

[PeteMcK]

so I rounded up all the crappy drivers I had and made this OB:

All the drivers except the 12" unit were scavenged from what neihbours had thrown out, The 6" units & Tweeter are old Magnavox units, had to cut off the dust caps, they'd been poked in, the 10" unit is a Taiwanese,no name, 12" is a hi-Q Jaycar driver ~AUD50. The wood is some old cupboard doors.

Sound - pretty good, doesn't need much low EQ, very good on vocals, but some stridency in the upper mids makes it unlistenable on Heavy Rock. Considering the xover is only 2 caps (jeez I'm cheap...) (one for the tweet, 1 across the parallelled woofers which are in series with the mids, which probably can't handle more than 5-10 watts) that's not too bad.
Just need to refine the xover & pretty them up

Pete McK

[adason]

eexcelent, i love it! i like your alon type open baffle shape
diy at its best
use the inductors for woofers, that will improve the midrange a bit
otherwise not much else for crossover is needed
e

[PeteMcK]

added a 3mH choke across the mid drivers (this is a series xover)... now they sound awesome, really smooth all the way down on double bass, I add just a touch of lows on the tone control to get overkill kick drum on modern music (Black eyed peas etc), and a touch of highs to make up for the inefficient tweeters (they're really old, with tiny magnets)

Even better - WAF is 100%, the missus loves them...
Pete McK

[Cal Weldon]

It's nice to use up some old stuff and have it sound good isn't it?

One question: Is that really all of your old crappy stuff?

[PeteMcK]

... well no, I've got much more stashed in the garden shed....

[tade]

i like your comment about rock. I think rock is a really good demo of how good yoru system is, expecially when you crank it up. I know lots of beautiful, soft, acoustic jazz stuff which will float you away on even crappy speakers, but try playing metallica... Most likely not gonna happen.

[PeteMcK]

... and in the garage, and in the workshop....:-)
(just call me magpie)

Re: Rock, I've haven't tried the System of a Down CD yet, I suspect I may need to zobel the mids to tame the stridency,
but I ususally play the Heavy stuff on my garage system so I don't annoy the neighbours too much - but much to my surprise, the OB bass can do that when wound up too....

[Cal Weldon]

Originally posted by PeteMcK
... well no, I've got much more stashed in the garden shed....

Uh huh! Thought so.

[tade]

why must we be plagued to collect junk! I keep collecting random electronics in the hope of using some of the components...

[planet10]

Originally posted by tade
why must we be plagued to collect junk! I keep collecting random electronics in the hope of using some of the components...

I have a bit saved up too ....

Pete. You get a Frugal-phile(tm) award for those.



dave