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Old 6th Sep 2018, 6:07 pm   #1
placemat
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Default Technics speaker issue...

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.
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Old 6th Sep 2018, 6:11 pm   #2
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Default Re: Technics speaker issue...

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!
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Old 6th Sep 2018, 6:30 pm   #3
Lloyd 1985
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Default 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!

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Old 6th Sep 2018, 7:28 pm   #4
JulietMike
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Default Re: Technics speaker issue...

The spec indicates that there should be 2 x 12 cm 5W speakers and line out sockets for stereo.
John
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Old 6th Sep 2018, 8:03 pm   #5
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Default Re: Technics speaker issue...

Correction to the previous post. The SXK-100 has mono line output.
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Old 6th Sep 2018, 9:56 pm   #6
Michael Maurice
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Default Re: Technics speaker issue...

The part number printed on the speaker is according to google, - a loudspeaker.
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Old 7th Sep 2018, 8:46 am   #7
placemat
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Default Re: Technics speaker issue...

Quote:
Originally Posted by Lloyd 1985 View Post
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.
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Old 14th Sep 2018, 6:26 am   #8
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Default 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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