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ultra compact mid tops

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stalian87 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stalian87 Quote  Post ReplyReply Direct Link To This Post Topic: ultra compact mid tops
    Posted: 29 October 2019 at 5:18pm
hey everyone,

I'm looking to build a pair of mid-tops and at my disposal i have a pair of 18sound 12nd930 drivers and a pair of Beyma 6CX200FE drivers.
These will be driven alongside a pair of TH18 tapped horns.

My Goals are:
A compact and as lightweight as possible cab
Freq response of 80-100hz upwards.

What kind of designs what you guys suggest?

I've been looking at the Orbit 4s by Turbosound but unfortunately James won't supply them without the polyurea finish which is no good to me as i'll be wrapping them.

Many thanks for any comments.
Sal
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FOO Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2019 at 6:07pm
Eeeh? Orbit 4 from turbosound ?

Sure its Turbosound? Not Soundgear? :)
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stalian87 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stalian87 Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2019 at 6:38pm
Haha sorry soundgear.

Spoke to James but as he manufacters them in batches, it's not viable for him to do what I need which is fair enough
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2019 at 8:08pm
that beyma 6cx200fe is only good for about 117 dB max spl. don't think you an combine it with the 12" in a useful way in the same box. Would probably make most sense to just build a small box for it alone. I was having a quick peek at beymas range to see if there is any 6" midwoofer that would make sense as a support to double and beef up the low mids, but didn't find anything with matching TS parameters.

You probably want to find a reflex alignment for it, but depending on your desired SPL and if you cross over high enough you might also get away with a closed box, provided it doesn't create too big of a hump. Definitely simulate and verify in winisd first.



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stalian87 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stalian87 Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2019 at 8:48pm
Hmm I didn't really think about spl when I bought those drivers but that's a fairly weak Coax.

I wanna aim for 130s peak spl

Will need to step up to 8 or even 10" Coax to go with the 12" driver then.

Anyone got any plans they could share of any good tops?

I'm gutted about the orbit 4s!


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Post Options Post Options   Thanks (0) Thanks(0)   Quote fatfreddiescat Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2019 at 9:07pm
Originally posted by stalian87 stalian87 wrote:


I'm gutted about the orbit 4s!





Belt sander ;)
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stalian87 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stalian87 Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2019 at 9:17pm
yeah i think i might bite the bullet and sand it off but it won't be easy getting it all same level flat! but might be less hassle than designing a new pair!
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stalian87 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stalian87 Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2019 at 9:18pm
any more suggestions would be welcome though as i do like a good build project Tongue
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2019 at 7:37am
Maybe state your goals more clearly? 

1) you want tops to use with your th18, without kick bins?
2) cross over 80-100hz
3)130 db ??
4) as small as possible?
5)venue size?
6) amount of audience?


If you are serious about 130db, forget about using those 6cx200fe Ouch


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stalian87 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stalian87 Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2019 at 8:26am
Originally posted by bob4 bob4 wrote:

Maybe state your goals more clearly? 

1) you want tops to use with your th18, without kick bins?
2) cross over 80-100hz
3)130 db ??
4) as small as possible?
5)venue size?
6) amount of audience?


If you are serious about 130db, forget about using those 6cx200fe Ouch



1) Sorry forgot to mention i have kick bins already but won't always need them.
2) I'd like the tops to be able to fill in the gap of the kick bins when i don't use the kick bins in terms of Freq response, hence 80-100hz. I didn't mention a crossover of 80-100hz though....
3) Although i may not need 130db, I love the headroom
4) I don't want them bigger than the orbit 4s
5) Audience sizes are never bigger than 400

I already mentioned i won't be using the 6CX200FE drivers

Hope that clears things up Smile
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB67 Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2019 at 8:45am
You  seem pretty keen on the orbits. Were you asking for a different finish on the cabs or supplied unfinished so you could get your own finish applied?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stalian87 Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2019 at 8:54am
i am very keen but i'm also wary of sanding perfectly good cabs and ruining them!

I need them unfinished as i'll be wrapping them in a custom colour, along with my Th18s.
I won't be able to wrap over the polyurea coating as it's textured.
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