Hello All,
Someone epoxied the voice coil into the gap of the speaker. But I want to keep the original speaker because it's speaker magnet is a filter in the power supply. I know that somewhere there are 2 inch polypropylene speakers that handle the 2 watts that might fit where the cone was in the original speaker. I took out the cone, and disconnected the voice coil. I have a transistor radio speaker hooked up and it fits in the space where the cone was but it cannot handle the power (one to two watts). So if anyone knows where I can get this very thin polypropylene speaker, please let me know.

Thanks,

Dave

A 2 inch speaker is going to sound like a transistor radio. It would be better to replace the field coil with a resistor. Use a new 4 inch PM speaker.

Warren,
The Charlie McCarthy radio takes a 3 inch speaker. It never had very good frequency response to begin with. The transistor radio speaker is very close to how they sound, however, the transistor radio speaker only handles .1 watts.
A Polypropylene speaker will have a very full range sound. I have some 2 and 3 inchers that are in a system and they sound great! There is no sub-woofer and they have plenty of bass response. I think there's a speaker that will fit and it will work. I know I'll find it somewhere.

Thanks,

Dave
:A 2 inch speaker is going to sound like a transistor radio. It would be better to replace the field coil with a resistor. Use a new 4 inch PM speaker.
:

I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.

Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.

You could also make a new voice coil. It's probably about 40 gauge wire.

T.

T,
I'm still pretty sure that there are very thin speakers with "rare earth" magnets that also sound good. But they only handle 2 Watts, which is exactly what I need.

Thanks,

Dave
:I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.
:
:Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.
:
:You could also make a new voice coil. It's probably about 40 gauge wire.
:
:T.
:

T,
Here is what they look like:

http://www.icc107.com/images/Spkrs-Sub_Mini.jpg

Dave
:T,
: I'm still pretty sure that there are very thin speakers with "rare earth" magnets that also sound good. But they only handle 2 Watts, which is exactly what I need.
:
:Thanks,
:
:Dave
::I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.
::
::Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.
::
::You could also make a new voice coil. It's probably about 40 gauge wire.
::
::T.
::
:

:T,
: Here is what they look like:
:
:http://www.icc107.com/images/Spkrs-Sub_Mini.jpg
:
:Dave
::T,
:: I'm still pretty sure that there are very thin speakers with "rare earth" magnets that also sound good. But they only handle 2 Watts, which is exactly what I need.
::
::Thanks,
::
::Dave
:::I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.
:::
:::Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.
:::
:::You could also make a new voice coil. It's probably about 40 gauge wire.
:::
:::T.
:::
::
:
I will see what I have later today. May have one.

T,
I found it but how do I get one. There don't seem to be any prices. This seems like the place where the minimum order is 1,000 pieces.

http://www.icc107.com/Search/Product_Description.cfm?ID=49&Search=Speakers&PartNum=S400RN

Dave
:T,
: Here is what they look like:
:
:http://www.icc107.com/images/Spkrs-Sub_Mini.jpg
:
:Dave
::T,
:: I'm still pretty sure that there are very thin speakers with "rare earth" magnets that also sound good. But they only handle 2 Watts, which is exactly what I need.
::
::Thanks,
::
::Dave
:::I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.
:::
:::Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.
:::
:::You could also make a new voice coil. It's probably about 40 gauge wire.
:::
:::T.
:::
::
:

:T,
: I'm still pretty sure that there are very thin speakers with "rare earth" magnets that also sound good. But they only handle 2 Watts, which is exactly what I need.
:
:Thanks,
:
:Dave
::I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.
::
::Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.
::
::You could also make a new voice coil. It's probably about 40 gauge wire.
::
::T.
::
:
Dave,
Have plenty of speakers, but not the one you are looking for. I do have a similar one but it is only .1 watt. The 3" one has the big magnet on back, the kind built into the case 500mw, and then 2" speakers that are rated .25 watt. Sorry, I tried.

Dave,
I have several rare earth magnets from hard drives, if you want to experiment. They're glued to a backing plate, but at least one was removed. They're half-moon shape, but cut to 1/2 that size (radially) About 1/8" thick. They resemble an arc of a circle with inner to outer diameter of 1/2", and 1 1/2" longest dim. across the outer arc. Good luck.

marv

:T,
: I'm still pretty sure that there are very thin speakers with "rare earth" magnets that also sound good. But they only handle 2 Watts, which is exactly what I need.
:
:Thanks,
:
:Dave
::I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.
::
::Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.
::
::You could also make a new voice coil. It's probably about 40 gauge wire.
::
::T.
::
:

Dave,
Forgot to mention orientation. As best as I can determine, poles are oriented across the 1/8" thickness.

marv

:Dave,
:I have several rare earth magnets from hard drives, if you want to experiment. They're glued to a backing plate, but at least one was removed. They're half-moon shape, but cut to 1/2 that size (radially) About 1/8" thick. They resemble an arc of a circle with inner to outer diameter of 1/2", and 1 1/2" longest dim. across the outer arc. Good luck.
:
:marv
:
::T,
:: I'm still pretty sure that there are very thin speakers with "rare earth" magnets that also sound good. But they only handle 2 Watts, which is exactly what I need.
::
::Thanks,
::
::Dave
:::I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.
:::
:::Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.
:::
:::You could also make a new voice coil. It's probably about 40 gauge wire.
:::
:::T.
:::
::
:

Marv,
I'm talking about speakers that are already made that have a rare earth magnet as their magnet and a polypropylene cone. I just ordered a sample from a company. If it works than I wont have to modify the radio at all.

Thanks,

Dave
:Dave,
:I have several rare earth magnets from hard drives, if you want to experiment. They're glued to a backing plate, but at least one was removed. They're half-moon shape, but cut to 1/2 that size (radially) About 1/8" thick. They resemble an arc of a circle with inner to outer diameter of 1/2", and 1 1/2" longest dim. across the outer arc. Good luck.
:
:marv
:
::T,
:: I'm still pretty sure that there are very thin speakers with "rare earth" magnets that also sound good. But they only handle 2 Watts, which is exactly what I need.
::
::Thanks,
::
::Dave
:::I have a 2 inch one. It sounds great, and I know where to get about 20 more, but they have big ceramic magnets.
:::
:::Too bad you can't soak the epoxy with acetone, but I don't think that acetone would work, and it'd take the enamel off of the windings.
:::
:::You could also make a new voice coil. It's probably about 40 gauge wire.
:::
:::T.
:::
::
:

If you can't get a sample, any old answering machine or small digital clock radio will probably do.

...or these?

http://cgi.ebay.com/2-1-4-TRANSISTOR-RADIO-ELECTRONIC-PROJECT-SPEAKER-LOT_W0QQitemZ140192855191QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item20a4253497#ht_1412wt_1050

T,
Look closer at the details. There is a decimal to the left of the 2. ie 200mw

marv

:If you can't get a sample, any old answering machine or small digital clock radio will probably do.
:
:...or these?
:
:http://cgi.ebay.com/2-1-4-TRANSISTOR-RADIO-ELECTRONIC-PROJECT-SPEAKER-LOT_W0QQitemZ140192855191QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item20a4253497#ht_1412wt_1050
:

Thomas,
These will not work. They only handle .2 watts. The speaker I need has to handle 2 watts, which is about 10 times as much power.

Thanks,

Dave
:If you can't get a sample, any old answering machine or small digital clock radio will probably do.
:
:...or these?
:
:http://cgi.ebay.com/2-1-4-TRANSISTOR-RADIO-ELECTRONIC-PROJECT-SPEAKER-LOT_W0QQitemZ140192855191QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item20a4253497#ht_1412wt_1050
:

Took apart an old set of headphones that were broken. Inside the ear pieces were those thin 2 inch poly speakers. There is no ratings marks on them, but I did play one LOUD on a Arvin 444A (50L6) output for 20 min. or so. Just to see if it would hold up. It did, seemed to not even faze it.

http://www.mouser.com/Search/Refine.aspx?sa=&Ne=254227%20254072%20254459%20254136%20254271%20254158%20254613%20254085%20254539%20254148%20254584%20254429%20254559%20254593&Keyword=transducer+marcum&FS=True&Ntx=mode+matchany&Ntk=Mouser_NoResults