tweeter upgrades and IB question

[Adrian_D 520]

i scraped the spherical speaker idea and that means i need a large format tweeter

what i have now is a pair of ca18rnx's and a pair of cheap-arse tweeters. i'm looking to upgrade the tweeters and i need some advice since i don't know what to choose. budget : $100 for the pair. i'm just looking for something laid back and not harsh.

EDIT : budget is $150

and the IB question. we just finished building a garage and it's adjacent (sp?) to one of the walls in my room. that means i could attempt an IB subwoofer. only trouble is the garage isn't insulated and there is quite a temperature diffrence during winter : -5*C in the garage and about 20*C in the room. would this diffrence render my idea useless ?

the motor in the garage seems problematic since the coil can get warm during play...

[JimJ 11]

Matt's Morels sounded nice to me...

[Adrian_D 520]

mdt-29 ?

[JimJ 11]

Either the '29s or the '30s...ask him. I know they make one in that price range.

[Adrian_D 520]

madisound ships overseas

[DevilDriver 28]

With that budget, I'm thinking Peerless HDS (810921), Vifa XT25, Seas 29TFFW or Seas 27TBFCG.

[Adrian_D 520]

right now i'm trying to decide between the peerles, seas 29TFFW, vifa xt25 and morel mdt-29.

Zaph audio has some very nice things to say about the peerles. i think i may just pick that

any ideas on the ib question ?

would it work to have such a temperature diffrence on the sides of the speaker ?

[///M5 2,833]

In that price range I really like the HDS.

[JimJ 11]

Likewise.

[Adrian_D 520]

settled then. HDS

i'm not sure what i'm going to do crossover - wise tho.

[ANeonRider 3]

You *could* get away with a pretty shallow roll off on the crossover using the HDS, since it can play quite low, especially since you are mating them with the CA's, which have great midrange ability & do not exhibit cone breakup like its metal cone cousins.

So, you could possibly cross them at 4k @ -6dB, with a simple capacitor on the tweeter & ~2-2.5k @ -6dB with an inductor on the CA. of course, this would need to be tweaked by some critical listening to get right.

As for the IB question, I don't believe it should be that much of a problem. Maybe build the baffle in the garage, with the subwoofer firing into your room, with an insulation barrier between them (the room & the subwoofer). Could make a "wall" using fabric & stuff the "wall" with insulation. You shouldn't experience any low end output loss, keep condensation to a minimum and you won't introduce a leak into your room for cold air to get in during the colder months either.

[Adrian_D 520]

right now all i have as far as crossovers go is a capacitor on the tweeter. the ca18's play full-range.

i was thinking about the crossover because if i decide to build something elaborate i could order the parts at the same time as the tweeters so i can save on shipping. but i don't think it would be a good idea since testing various components in the crossover appears important

ib topic : basically have the subwoofer at lower temperature compared to the room temperature ? my house has thick walls...about 35-40cm (that's how they used to build them) and i could mount the baffle in the garage side with the woofer firing there so the motor will be inside the wall.

[ANeonRider 3]

I was alluding to that you might want a thermal barrier between the garage & your room, due to the colder temperatures during the winter months.

I did figure the walls were really thick lol. Europeans build their houses to last, unlike us foolish friends in North America