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Multi-Way Conventional loudspeakers with crossovers

Quasar QS1 Studio Speakers.
Quasar QS1 Studio Speakers.
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Old 14th November 2018, 06:39 AM   #1
redrooster is offline redrooster  Australia
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Default Quasar QS1 Studio Speakers.

I've tried to find some info on these speakers online with no luck so far! I bought them from a guy who never used them and doesn't know anything about them except that they are good speakers that his musician friend had until he died a few years ago. So any info I can get before I dismantle them to replace the capacitors in the crossovers would be great. They are fairly heavy at about 20kg each.
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Last edited by redrooster; 16th December 2018 at 11:48 PM.
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Old 14th November 2018, 05:08 PM   #2
Lojzek is offline Lojzek  Croatia
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There is quite a few information already at hand and it looks as if this was designed properly from the beginning. Worth to be refurbished.
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Old 14th November 2018, 11:01 PM   #3
redrooster is offline redrooster  Australia
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Quote:
Originally Posted by Lojzek View Post
There is quite a few information already at hand and it looks as if this was designed properly from the beginning. Worth to be refurbished.
Where is this information? I can't find any reference to these speakers anywhere? I've even tried different search engines?
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Old 15th November 2018, 08:58 AM   #4
Lojzek is offline Lojzek  Croatia
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Neither can I, meant the photo you uploaded. Sorry!
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Old 15th November 2018, 09:52 AM   #5
geotone is online now geotone  Europe
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Found this shrapnel:

https://books.google.de/books?id=Zwk...AJ&pg=RA1-PA25
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Old 16th November 2018, 12:40 AM   #6
redrooster is offline redrooster  Australia
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Quote:
Originally Posted by Lojzek View Post
Neither can I, meant the photo you uploaded. Sorry!
No worries mate!
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Old 16th November 2018, 02:29 AM   #7
redrooster is offline redrooster  Australia
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Quote:
Originally Posted by geotone View Post
Found this shrapnel:

Billboard - Google Books
Very interesting stuff, not only the info on the Quasar speakers but all of the other tidbits from the early seventies. Thanks, mate, it's appreciated. When I first hooked these speakers up I put on Dark Side of the Moon, Pink Floyd, I knew immediately that these speakers were the real deal and this article confirms it. That link should be a Sticky here at DIYAudio, I love it!
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Old 16th December 2018, 11:42 PM   #8
redrooster is offline redrooster  Australia
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Here are some photos of the drivers, crossover and insides, There's a Goodman's 12-inch woofer, the mid-range has no identifying marks except for Made in England? The tweeter is Made in Japan 8 ohms, 20W and the Super-Tweeter is also 8 ohms, 20W and made by Eagle International. The cabinets are what looks like veneered marine ply with an insert of a cork-like damping material. None of the crossover capacitors is electrolytic so I take it that the present polymer ones don't need replacing?
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Old 17th December 2018, 12:07 AM   #9
PeteMcK is offline PeteMcK
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Those caps with 'elcap' on the side are all electrolytic, and will all need replacing.
You may also want to consider changing the orientation of the inductors to reduce interactions
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Old 17th December 2018, 12:13 AM   #10
phivates is offline phivates  United States
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Are the drivers identical in both enclosures? Quite the curiosity, these. Quasar was a Matsushita brand from 1974 on, applied to tv products, so they may have been an early attempt to try hifi. I do think your crossover caps are electrolytic, just better dressed than the generic.
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