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-   -   Technics speaker issue... (https://www.vintage-radio.net/forum/showthread.php?t=149543)

placemat 6th Sep 2018 6:07 pm

Technics speaker issue...
 
2 Attachment(s)
Hi, I've just been given a Technics SXK 100 keyboard from the early 80s. After switching it on only audio is coming from the left speaker. I've opened it up to have a quick look and there seems to be a full size speaker cone on the left hand side but a small plastic unit on the right. I don't understand what it is. Is it a small speaker or is it not a speaker and the keyboard is actually mono which would save me a lot of trouble!?
I've added a couple of pictures to show you what I mean. If anyone can help with this issue I would appreciate it.

placemat 6th Sep 2018 6:11 pm

Re: Technics speaker issue...
 
1 Attachment(s)
This is a photo of the entire keyboard. I don't know if this model is a mono keyboard, but if you can let me know if it is or not I can put this project to bed!:-)

Lloyd 1985 6th Sep 2018 6:30 pm

Re: Technics speaker issue...
 
Looks to me like the smaller one is a tweeter,, which would mean it’s mono. You might be able to hear some high frequency sound from it if you get up close to it!

Regards
Lloyd

JulietMike 6th Sep 2018 7:28 pm

Re: Technics speaker issue...
 
The spec indicates that there should be 2 x 12 cm 5W speakers and line out sockets for stereo.
John

JulietMike 6th Sep 2018 8:03 pm

Re: Technics speaker issue...
 
Correction to the previous post. The SXK-100 has mono line output.

Michael Maurice 6th Sep 2018 9:56 pm

Re: Technics speaker issue...
 
The part number printed on the speaker is according to google, - a loudspeaker.

placemat 7th Sep 2018 8:46 am

Re: Technics speaker issue...
 
Quote:

Originally Posted by Lloyd 1985 (Post 1073076)
Looks to me like the smaller one is a tweeter,, which would mean it’s mono. You might be able to hear some high frequency sound from it if you get up close to it!

Lloyd, you are bang on. I plugged it in and started one of the rhythms. All of the high frequencies were coming from the right speaker. You do indeed have to put you ear close to it. A strange set up, but maybe the K200 model had an extra speaker?! It looks like it wouldn't be hard to get another 8 ohm speaker and replaced the tweeter with it but as long as it's all as it should be I don't think I'll bother!
Thanks to everyone who has helped with this thread.:thumbsup:

crackle 14th Sep 2018 6:26 am

Re: Technics speaker issue...
 
Maybe it is designed that way to make it appear that the high notes are coming from the right of the keyboard for realism.

Mike


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