Speaker impedance qusetion

[bq340]

My shortwave radio receiver's speaker is dead (Hallicrafters Model
S-38). I can't find an exact physical match to it in the original 16 ohm
impedance but can match it with a 8 ohm one that has the same mounting
pattern.

Can I just use the 8 ohm? or, if not, is there a way to adapt it to
function without hurting the receiver or do I need to keep looking for a
16 ohm?

TIA
MikeB

 

[Meat Plow]

My shortwave radio receiver's speaker is dead (Hallicrafters Model
S-38). I can't find an exact physical match to it in the original 16 ohm
impedance but can match it with a 8 ohm one that has the same mounting
pattern.

Can I just use the 8 ohm? or, if not, is there a way to adapt it to
function without hurting the receiver or do I need to keep looking for a
16 ohm?

TIA

It will be A-OK.

 

[bq340]

It will be A-OK.

Thanks!

MikeB

 

[Jerry G.]

There is a good chance that it will be okay. This also depends on the
output stage.

After installing the speaker, run the sound up at a higher than normal
listening volume for about 20 to 30 minutes. Measure the temperature
of the audio output IC or transistors to see if they are running too
hot. Most output devices can run safely at up to about 60 C under
continous use.


Jerry G.
======

 

[Meat Plow]

There is a good chance that it will be okay. This also depends on the
output stage.

After installing the speaker, run the sound up at a higher than normal
listening volume for about 20 to 30 minutes. Measure the temperature
of the audio output IC or transistors to see if they are running too
hot. Most output devices can run safely at up to about 60 C under
continous use.

Ummm I'm pretty sure the Halli S-38 is all toobs.

 

[Don Bowey]

There is a good chance that it will be okay. This also depends on the
output stage.

After installing the speaker, run the sound up at a higher than normal
listening volume for about 20 to 30 minutes. Measure the temperature
of the audio output IC or transistors to see if they are running too
hot. Most output devices can run safely at up to about 60 C under
continous use.

That is funny. It's output stage normally runs hot from it's 50 Volt
filament.

 

[Jerry G.]

I didn't realize that it was a tube radio! I have not seen one of those in
tens of years!

If it is a tube output stage, then there is not much to worry about with
some speaker impedance mismatch.

--

Jerry G.
======

There is a good chance that it will be okay. This also depends on the
output stage.

After installing the speaker, run the sound up at a higher than normal
listening volume for about 20 to 30 minutes. Measure the temperature
of the audio output IC or transistors to see if they are running too
hot. Most output devices can run safely at up to about 60 C under
continous use.

That is funny. It's output stage normally runs hot from it's 50 Volt
filament.

 

[PeterD]

There is a good chance that it will be okay. This also depends on the
output stage.

After installing the speaker, run the sound up at a higher than normal
listening volume for about 20 to 30 minutes. Measure the temperature
of the audio output IC or transistors

Nothing beats a reply that is posted by someone who has no clue what a
Hallicrafters S-38 receiver is! (Hint: think tubes)

to see if they are running too
hot. Most output devices can run safely at up to about 60 C under
continous use.

The 8 ohm speaker will work just fine.

 

[EpsilonRho]

If you are really worried you can had a 8 ohm power resistor in series with
the 8 ohm speaker.
Gene