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Showco Pyramid 900 disco speakers.
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jbl_man View Drop Down
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Joined: 12 January 2005
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Points: 11308 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Topic: Showco Pyramid 900 disco speakers.
    Posted: 29 March 2025 at 9:27pm
Here's a rare old thing, Showco horn speakers from the late 70's.

Each one is a large cube, with a folded horn bass section with a rear-facing Electrovoice EVM-15b. and four 4-inch mid drivers(look like JBL, but can't be sure) crossed at 800hz and a pair of peizos for hf above 5k.
Be seeing you.
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Points: 770 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KDW32 Quote  Post ReplyReply Direct Link To This Post Posted: 29 March 2025 at 9:35pm
Oooooh wtf you can see what they are trying to do there. But erm. Wtf ! 😎 Mad. I would love to hear one!
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Daniel S View Drop Down
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Points: 168 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Daniel S Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2025 at 10:30am
I'm almost getting Danley vibes here. Geek
Distortion is evil
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Points: 11308 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2025 at 11:04am
Here's another photo. In this one they have stuffed a couple of rectangular piezos in instead. Smile
Be seeing you.
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Points: 1046 		Post Options Post Options   Thanks (0) Thanks(0)   Quote monkeypuzzle Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2025 at 12:36pm
Looking at the old peddle powered Singer sewing machine in one of the first pics, they’re pretty big!

Edited by monkeypuzzle - 19 April 2025 at 11:12pm
blah blah blah blah blah......
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Points: 585 		Post Options Post Options   Thanks (0) Thanks(0)   Quote VECTORDJ Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2025 at 1:17am
A+    Maybe replace the PZTs with Real Bullets and X-over????
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Points: 538 		Post Options Post Options   Thanks (0) Thanks(0)   Quote doller Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2025 at 10:33am
How low did they go？
I just love these old speakers. Thank you, Ian.
I made something not too far off only went down to 110hz at best. 
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jbl_man View Drop Down
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Points: 11308 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2025 at 12:56pm
Well according to the spec Dom, down to 40hz! LOL

But i don't believe a word of it. Some wishful thinking when they wrote that. Yup, think you are right, realistically can't see this doing anything below 100hz? 




Edited by jbl_man - 31 March 2025 at 1:02pm
Be seeing you.
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njw View Drop Down
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Points: 2700 		Post Options Post Options   Thanks (0) Thanks(0)   Quote njw Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2025 at 9:08pm
 It seems they're a bit confused as to what size the voice coils actually are on the mid range woofers too...
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Points: 974 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BJtheDJ Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2025 at 11:48pm
Originally posted by njw njw wrote:

 It seems they're a bit confused as to what size the voice coils actually are on the mid range woofers too...


Make your choice ~~  3/4''  or 25.4Mmm  :)




Edited by BJtheDJ - 31 March 2025 at 11:49pm
I started out in this business with nothing.
I still have most of it left.
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Points: 538 		Post Options Post Options   Thanks (0) Thanks(0)   Quote doller Quote  Post ReplyReply Direct Link To This Post Posted: 01 April 2025 at 7:10am
Sorry Ian did you ever get that amp? 
Thanks for the spec sheet upload. 
Maybe VC internal and external could be a fat one.
Love that too.
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jbl_man View Drop Down
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Points: 11308 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 01 April 2025 at 8:15am
Hi Dom, nope, i phoned the fellow a couple of times, left messages on his voice mail, no-one ever got back to me. Very odd. 
Be seeing you.
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