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TH-18 build

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smitske96 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2017 at 4:36pm
With some eq on a polemount:

 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 12:58am
If i were you, i would use 24db/oct BW. Not 12. It will require reversing polarity on the hf too.
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smitske96 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 19 September 2017 at 1:15pm
I'm also still looking for nice professional grill's, but they are indeed hard to get.
Does anyone have a nice adress? I'm looking for honey cone cutouts (or round if not possible).

The plan is to have te same grill for the TH-18 and the mid/high.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 19 September 2017 at 2:38pm
Originally posted by smitske96 smitske96 wrote:

Originally posted by SouthwestCNC SouthwestCNC wrote:

Time alignment possibly? Found this to be an issue with the tham 12.


That was my first though also, but time being limited I couldn't get it right.
Now I am really hoping to have some time for the mid/high's. 
At the moment the "to-do-list" is VEEEEERRRRRYYY long LOL

Getting some training at time and phase alignment is on of them! This goal of the project is to have a nice sounding system, and I am also confident that can be doable. Ofcourse I have to learn lots of things, but that is never a bad thing!




Timo Beckman has a new course starting soon I believe.
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all bass View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 19 September 2017 at 4:10pm
Originally posted by smitske96 smitske96 wrote:

I'm also still looking for nice professional grill's, but they are indeed hard to get.
Does anyone have a nice adress? I'm looking for honey cone cutouts (or round if not possible).

The plan is to have te same grill for the TH-18 and the mid/high.

Raabe
Get your free line array plans here!
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smitske96 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 27 September 2017 at 11:09am
@all bass

Thanks for the link!Wink

I also had some time to do a outside measurement, but couldn't do al the things I wanted to do..


They sound much better already, next step will be measuring them with the TH18's.
After that (will take some time)  a SMAART course by probably Timo Beckman.
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smitske96 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 03 October 2017 at 7:12pm
I also started with designing a dual 15 cab for on top of the TH18 or only with the mid-highs.
It has tot have a small frontal area (as wide as the TH18) so 571x571 is the target.

I simulated it as a reflex cab, but I can imagine that there can be a bandpass effect?
Cab is tuned at 43 Hz, and I am planning to go with a push pull configuration.

Topview:

(line's are a little bit crooked because of the conversion by dropbox)

This is still a quick sketch and with this arrangement, it will be a little hard with fitting the drivers.
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_djk_ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 03 October 2017 at 7:50pm
There will be a small peak corresponding to the depth of the cavity, probably around 160hz~180hz.
djk
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xoc1 Quote  Post ReplyReply Direct Link To This Post Posted: 03 October 2017 at 9:16pm
I think that depending on the requncy range you are planning for the mid range cab the slot loading will add a peak just where you dont want it.
I cant help thinking that a more gentle angle might work better like a manifold speaker loading (an inverted piramid baffle with the 2  15inch drivers on opposing sides of the piramid)
OMG my Daughter has gone prog rock!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 03 October 2017 at 10:25pm
"I think that depending on the requncy range you are planning for the mid range cab the slot loading will add a peak just where you dont want it."

So all Cubo subs are junk?

Do you not own an EQ?

The peak is less than what you will see on a small folded horn (or a Cubo).


Edited by _djk_ - 03 October 2017 at 10:25pm
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smitske96 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 04 October 2017 at 12:35pm
The range will be 40/45 ish to 140/150 ish. 
Maybe get rid of the two front parts that are 10 cm wide, then the slot will be a little bit shorter.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote gen0me Quote  Post ReplyReply Direct Link To This Post Posted: 04 October 2017 at 1:45pm
Dont Cubos play everything "on the same note"?

If front is square you could place ports horizontaly and speakers vertically if they dont fit. Or use tube ports.
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