515g in tuba 36

[valhallax]

was just reading in another post here that the 515g would work well in this enclosure. i just happen to have a pair here from gpa. where do i find some guidance in this area. old guy, you think this is a viable sub? im currently running kilomax's in 28cuft boxes, not all that impressed, and would like to keep my system all altec

[Old Guy]

The 515G is probably the best shot if you want an Altec subwoofer.

The parameters aren't optimum, but from what I've gleaned, some optimization can be done.

Have you read the forum posts at the site?

Just a note- Fitzmaurice has a bit of PT Barnum in him. But the stuff does work..

Here's a link to the Tuba forum.

http://billfitzmaurice.com/phpBB2/vi...436a1d8cc1f8ff

There are people there who've built several different models and could answer questions much better than I.

[valhallax]

after reading a little on the tuba, ive gleamed it will only yeild good response to about 30 hz. did i read that right? my system is currently very prominent in this range. guess im looking for something along the lines of an infrasub. read somewhere here that gm uses a couple of 515b's in a sub configuration. anyone have suggestions? by the way, on a different note, along the same lines.. winisd says a 420a will get to 19 hz in a 46 cuft box. comments welcomed

[Old Guy]

which Tuba did you look at? there is a version of the 36 usable to 15 hz.

If your systen is good at 30 hz, you won't gain a lot from another 10 Hz IMHO.

I sincerely doubt you are going to get lower than a Tuba 36 with Altec drivers.

[Old Guy]

Actually, the more I think about it- I'm haveing a real problem believing Kilomax flat to 30 hz- from what I know of that driver I have sincere doubts.

[valhallax]

actual stastics are really unknown to me as my rta only goes down to 40 hz. its just what winisd has sim'd for me. tuba 36 would probably take up less room in my living room , which is getting a little crowded. had a lady over the other night and she loved the sound, but thought the 210's were a lil much for contemporary decoration. hmmm, i said. i'll look into the tuba a little more. im going to need a good winter project anyway

[Old Guy]

Actually, indoors is a bit different- lots of things going on.

I always liked to do RTA tests outdoors, the concept being to get a handle on the speker by itselff, then deal with the room.

One thing about a horn sub- the dynamics are totally different, compared to a direct radiator.

Horns often sound like they haxe more response, just because of superior transients.

the old you pays yer money and... applies.