Thermal cutoff switch for loudspeaker

[Tom]

I'm looking for a replacement thermal cuttoff switch for a Technics SB-A15
speaker. The part is labelled TMR1 on the PCB and the only markings on the
part itself are:

KSC
PA-0.8A

So I'm assuming that it's just an 800 mA polyswitch. However I don't know what
voltage rating I need to be looking for. Also the standard thermal switches
that I've found in catalogs with similar current ratings are fairly small,
flat, round, and thin. The original switch has a fairly large rectangular
shape, about the size of two sugar cubes. So perhaps it's actually rated for a
much higher current than 800 mA. The switch only protects the midrange and
tweeter (not the woofer) and the entire speaker is rated for 200W

Any ideas for a replacement part?
--Tom.

 

[Jerry Greenberg]

Contact any Panasonic parts distributor, or Panasonic directly for a
reference to a parts supplier for their products. With the model
number of your speaker unit, you can order the origional part.


Jerry Greenberg
http://www.zoom-one.com

--





tom8192@hotmail.com (Tom) wrote in message news:<5dlnb.200215$9l5.70963@pd7tw2no>...

I'm looking for a replacement thermal cuttoff switch for a Technics SB-A15
speaker. The part is labelled TMR1 on the PCB and the only markings on the
part itself are:

KSC
PA-0.8A

So I'm assuming that it's just an 800 mA polyswitch. However I don't know what
voltage rating I need to be looking for. Also the standard thermal switches
that I've found in catalogs with similar current ratings are fairly small,
flat, round, and thin. The original switch has a fairly large rectangular
shape, about the size of two sugar cubes. So perhaps it's actually rated for a
much higher current than 800 mA. The switch only protects the midrange and
tweeter (not the woofer) and the entire speaker is rated for 200W

Any ideas for a replacement part?
--Tom.

 

[BOB URZ]

Tom wrote:

I'm looking for a replacement thermal cuttoff switch for a Technics SB-A15
speaker. The part is labelled TMR1 on the PCB and the only markings on the
part itself are:

KSC
PA-0.8A

So I'm assuming that it's just an 800 mA polyswitch. However I don't know what
voltage rating I need to be looking for. Also the standard thermal switches
that I've found in catalogs with similar current ratings are fairly small,
flat, round, and thin. The original switch has a fairly large rectangular
shape, about the size of two sugar cubes. So perhaps it's actually rated for a
much higher current than 800 mA. The switch only protects the midrange and
tweeter (not the woofer) and the entire speaker is rated for 200W

Any ideas for a replacement part?
--Tom.

Simple. Either bypass it or put in a quick blow fuse.
Under normal usage, it should never come on anyway.
If your abusing them, you get what you reap.

BOB



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