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Multi-Way Conventional loudspeakers with crossovers

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Old 10th September 2017, 02:25 AM   #1
radiosmuck is offline radiosmuck  Canada
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Default Like I need more speakers

I need more speakers like I need a hole in the head, but I could not resist picking up a pair of vintage Celestion SL6s' for $7 at a local charity shop.
The SL6s' surrounds are very stiff, different to what is the norm for a small sealed box? I have a pair of Goodmans Maxim speakers in my collection and the surrounds are like jello.
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Old 10th September 2017, 02:07 PM   #2
fatmarley is offline fatmarley  England
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Would be nice to find some cheap ls3/5a in a charity shop.
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Old 10th September 2017, 02:17 PM   #3
scottjoplin is offline scottjoplin  Wales
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I found some KEF concertos in a junk shop, cost me 40
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Old 10th September 2017, 09:43 PM   #4
boswald is offline boswald  United States
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Those surrounds may well have stiffened and require treatment. Contrary to sales pitches, rubber is hardly forever. But if not used for lower bass, the T/S parameter shifts are complementary to a point, and the alignments are similar. But also note how stiff sub suspensions can be, and some are low qt for ported boxes. So, play 'em and see.
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Old 10th September 2017, 11:33 PM   #5
Cal Weldon is offline Cal Weldon  Canada
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Hey smuck, a pic or two would be nice. Maybe even ask me to move it here?
Scott, you're threadjacking.
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Old 11th September 2017, 04:25 PM   #6
radiosmuck is offline radiosmuck  Canada
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Quote:
Originally Posted by Cal Weldon View Post
Hey smuck, a pic or two would be nice. Maybe even ask me to move it here?
Scott, you're threadjacking.
Free Online Screenshot - Capture, Editor, Uploader, etc.
Shot in a tidier corner of my workshop.
The boxes have been painted brown, all the corners are sharp so the veneer should be good underneath.
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Old 12th September 2017, 12:22 PM   #7
radiosmuck is offline radiosmuck  Canada
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Quote:
Originally Posted by fatmarley View Post
Would be nice to find some cheap ls3/5a in a charity shop.
Not everyone's choice apparently.
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Old 12th September 2017, 01:12 PM   #8
Nico Ras is offline Nico Ras  South Africa
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Smuck, I recall Celestion using a honeycomb aircraft aluminium for the box panels to increase stiffness and decrease weight.

I have also heard, but I never confirmed that brake fluid can soften rubber, but don't take my word for it, maybe consult google.
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Old 12th September 2017, 06:22 PM   #9
keithj01 is offline keithj01  United Kingdom
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Originally Posted by Nico Ras View Post
Smuck, I recall Celestion using a honeycomb aircraft aluminium for the box panels to increase stiffness and decrease weight.

I have also heard, but I never confirmed that brake fluid can soften rubber, but don't take my word for it, maybe consult google.
That would be the SL600 - the deluxe version of the SL6. The material was called "Aerolam". Pretty expensive, in its day, but the speaker was very highly regarded.

I have a recollection of a matching subwoofer, which was pretty avant-garde. It was some sort of clamshell design, and probably a dipole. I just wonder how many were sold? The SL600 itself doesn't seem to appear very often nowadays, and the subwoofer must be rarer than rocking-horse droppings!
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Old 13th September 2017, 07:15 AM   #10
fatmarley is offline fatmarley  England
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I don't think much of them either but they sell for silly money on ebay
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