Problem with 1 speaker not working...

[mr L]

i am new to trouble shooting speakers. Picked up some Tandberg TL 5010 speakers & one will not work at all. I think this definitely is the reason. This is a close up of the crossover inside. Looking at the pic you can see that the top one is fine, the middle one is dangling,and the bottom one is missing, as well you can see in the pic is above where the bottom one should be there is a plastic type lead connector or what ever it is, that is missing. I cant see any way this could be like this unless the previous owner was opening it up & messing with it. Cause I found no pieces or anything in the speaker should it have fallen off which I doubt.

Being out here in Southern California I am about 45-60 minutes away from Orange County Speakers which I hear is a very good place to have speakers worked on. Is this something that can be replaced, since these are from like 1974? If they no longer have this models cross overs, can they use a different one? Man just plugging in the single speaker it sounds sooo good, cant wait to get the 2 of them hooked up. That 12" celestion sounds pretty darn good.

 

[dapack69]

Any crossover will work just fine, as long it crosses over at the same frequencies your not going to notice any difference.

Those speakers are older than me, was born in 1976

 

[mr L]

glad to hear..

Thanks Dapack, thats good to know. Man these were really taken care of from who ever owned them all these years. Been reading up on them online & they are from Norway & were considered their top of the line back in the day. I'm getting into the older stuff & like what I read & hear out of these speakers.

 

[highfigh]

If you can solder and the coil wire only broke, you can bare the end and solder in to the crossover where the stub is. The woofer will be inoperable if the coil isn't connected but the rest should be OK.

Look at the coil- the color doesn't look normal. If it's streaked, it mat have been overheated and if that happens, it's possible that the enamel on the wire melted and is causing the wire to short, which will decrease the value of that coil. The good part is that coils aren't necessarily expensive.

 

[TLS Guy]

Any crossover will work just fine, as long it crosses over at the same frequencies your not going to notice any difference.

Those speakers are older than me, was born in 1976

Yes it will make a difference, as crossovers have orders, as well as crossover points.

You can copy the circuit of the other speaker. I note the crossover has polarized electrolytic caps which should not really be in a crossover. Non polarizing ones are quite common in a lot and may be most commercial speakers today. However decent crossover do not use electrolytic caps. I doubt those speakers are worth much effort. At that date, I doubt the designer had the benefit of Thiel and Small's land mark paper, and it was certainly before the age of computer assisted crossover design.

 

[highfigh]

Richard Small restated Thiele's original work and, starting in '72, published his articles in the AES Journal. It was out there, if they wanted to use it. As far as computer designed, it's not necessary to use a computer but it sure isn't much fun doing it with a worksheet and calculator. Plus, gathering the parameters was tedious and used equipment most people won't want to buy, unlike what's available now.

I always heard that electrolytics could be used if they were paired with another, connected with the polarity reversed, but it never seemed like it was really the "right" way.

 

[AVRat]

How's the garage HT coming????