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Richard Allan Atlas 15 woofer

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bob4 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Topic: Richard Allan Atlas 15 woofer
    Posted: 10 March 2019 at 7:35am
Was at a friends place last night listening to their system. They had this curious old woofer that came from a 15" scoop. Anyone recognize this? Thought it might bring back some memories for the oldtimers on here.......

Edited by bob4 - 10 March 2019 at 7:35am
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monkeypuzzle View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote monkeypuzzle Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2019 at 9:32am
I love the warning, “capable of producing sound levels that can damage your hearing” 250w! Didn’t need drivers capable of 2kw then!
blah blah blah blah blah......
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valve head777 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote valve head777 Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2019 at 12:41pm
Yeah, the art of efficiency was the design criteria as  big power didn't exist.
Big box's was the draw back. Still, it's a design philosophy I think has been lost l.
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JonB67 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB67 Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2019 at 2:11pm
so how efficient were the older drivers?
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Mircea Bartic View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2019 at 9:30am
102 103dB was achievable but with low power handling and a lot of beaming.

also music had almost no low end content. most of it was kickdrum and vocals. (60-70Hz and upwards)

nowadays you need a LOT of subbass optimised speakers to play modern music
general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research

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valve head777 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote valve head777 Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2019 at 1:14pm
PPlease ignore me. I'm really very stupid.
Freedom of choice, choice of freedom.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2019 at 3:48pm
It has lightweight paper cone,so expect about 100db. JBL e130 managed around 105db. Limited low-end response,as Micrea says. Of course fitting them large bass horns would improve things a lot.

Most disco tunes had a decent about of low-end...Donna summer, love to love you, from 1974, had a fair bit,probably around 50hz rather than true sub though.
Be seeing you.
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