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2x8" PPSL midtops made from junk
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bob4 View Drop Down
Old Croc
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Joined: 29 February 2004
Location: Finland/Germany
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Points: 1843 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 16 June 2017 at 8:33pm


Glued the second baffle, thats about it for tonight.....
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doller View Drop Down
Young Croc
Young Croc


Joined: 19 July 2014
Location: japan
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Points: 509 		Post Options Post Options   Thanks (0) Thanks(0)   Quote doller Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 10:10am
Totaly fantastic Bob. This is what it is all about. Love the hand saw and the abc tiles on the playroom floor. Looking forward to seing this finished. Great stuff.
Oh! what is ppsl? Push pull sl?
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bob4 View Drop Down
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Joined: 29 February 2004
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Points: 1843 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 11:44am

Now the plenum is closed from the back.

I'll do a longer writeup after i finish the build. The wife wants her balcony back on monday
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bob4 View Drop Down
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Joined: 29 February 2004
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Points: 1843 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 1:16pm
Added the missing side panel


Only bottom and top panel left, hope i can fire it up today....
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gen0me View Drop Down
Young Croc
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Joined: 20 February 2016
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Points: 999 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gen0me Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 2:50pm
Do you have plan and ts parameters?
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bob4 View Drop Down
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Joined: 29 February 2004
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Points: 1843 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 3:48pm
I couldnt get "official" data, so i did impedance and added mass measurements to autocalculate ts parameters in room eq wizard. I plugged the data into winisd, and it turned out there was no viable reflex tuning, so decided to do a closed box.
I haven't made a proper plan, just a rough sketch. I mainly designed it around the hf horn.
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gen0me View Drop Down
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Joined: 20 February 2016
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Points: 999 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gen0me Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 8:08pm
Always better to measure than take official data
So you simulated it as closed?

Actually this the perfect example to compare winisd as closed, hornresp will probably show something more bp4 and abec with actual geometry.

What is this crazy horn?
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bob4 View Drop Down
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Joined: 29 February 2004
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Points: 1843 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 8:42pm
The crazy horn is from a community csx series top, maybe csx57. It's loaded with a crap eminence 1" and shouts like a ******. Had to put a piece of foam in the horn throat to tame it for now..... Lotsa work for the inuke built in dsp (going for an inuke dsp3000 to drive these boxes)

Cheap & cheerful, i know
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gen0me View Drop Down
Young Croc
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Joined: 20 February 2016
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Points: 999 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gen0me Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 8:44pm
Beaming? Or is just so loud?
Could you make photo from front to see its geometry? Both ways.

Edited by gen0me - 17 June 2017 at 8:46pm
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bob4 View Drop Down
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Joined: 29 February 2004
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Points: 1843 		Post Options Post Options   Thanks (1) Thanks(1)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 8:55pm


Finished the first box!! (well, sort of, connectors, wiring and finish still need to be sorted out)
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njw View Drop Down
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Joined: 26 March 2010
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Points: 2574 		Post Options Post Options   Thanks (0) Thanks(0)   Quote njw Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2017 at 10:23pm
Come on man, wire it up and tell us what it sounds like! Big smile
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JonB67 View Drop Down
Young Croc
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Joined: 22 April 2016
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Points: 1376 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB67 Quote  Post ReplyReply Direct Link To This Post Posted: 18 June 2017 at 12:17am
Looks mental! Love that you're thinking outside the box!
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