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description: Audio advice and discussions with audiophiles and professionals. Free discussion forums, open to all and frequented by industry experts. Ask questions and get advice on stereos, speakers, hi-end amplifiers, pre-amps, home theater, tube hi-fi, turntables, vinyl, tweaks, music, films, video, DVDs and more.
items: Anyone have info on these?
items: Re: Anyone have info on these?

Anyone have info on these?
type: item
description: Hi Everyone, I've had these around for some time and thought I might be able to put them to use but can't find any hard data on them. I ran the tests to determine the TS numbers and found that they are different. I suspect age has caused the change and one either has a more supple support structure or the other one that is more rigid. Ideas on getting them to match are welcome. TS data Speaker A / Speaker B Fr 28.4 / 41.0 Qms 6.46 / 10.85 Qes 0.40 / 0.87 Qts 0.37 / 0.80 Re 5.8 / 5.8 They are 15 inch co-axials. They came from Lafayette Radio/Electronics sometime in the 60's or 70's. The only number is 21-47254W on the baskets. LRE had some from several manufactures I believe incl Goodmans, Jenson, Utah. A web search didn't turn up anything in this size and configuration.
creator: gofar99
date: 2012-08-11T03:08:31-00:00

Re: Anyone have info on these?
type: item
description: Clearly from Utah as there are similar ones on ebay. Still no clue on what the "factory" parameters were. Nor any ideas on how to get them to match. I have considered that they may need to be broken in after sitting for years. Perhaps just feeding in a signal near the resonance points for a few days at low level. Ideas are always welcome.
creator: gofar99
date: 2012-08-11T15:37:18-00:00

Re: Anyone have info on these?
type: item
description: Yes, I thought I recognized those too, but I'm not familiar with them. But sadly, I think if the parameters are off like that, you'll probably need a recone. Old speakers sometimes have stretched or sagging suspensions, which can't be "massaged" back to life. I mean, they'll make sound, but they won't be right.
creator: Wayne Parham
date: 2012-08-12T01:38:08-00:00

Re: Anyone have info on these?
type: item
description: Hi, yes, but probably not worth the cost. Right now they are buzzing away on an amp and signal generator. I'll see tomorrow if there have been any changes.
creator: gofar99
date: 2012-08-12T02:55:42-00:00