8247rz21@sjuvax.UUCP (zinnato) (05/06/85)
Responding to the person who had bought a monitor without a speaker,
(or anyone else who may be in the same predicament)....
There are a few things you can do.
Radio Shack sells a small amplified speaker (approx 10in by 10in) that
plugs right into the audio output.
The price of this I think was approx $20.
On the cheaper sided (for those who want sound but not excellent quality
I suggest just hooking the output to a regular 8 ohm speaker. If you
don't have the appropriate plugs, Radio Shack sells these very cheap.
like I said the sound quality is about as good as a TV speaker but the
only difference is that you cannot adjust the volume. Those who are
experienced at fiddling with electronics could probably fix this.
I hope I was of some help to someone out there.
Ron Zinnatocrs@lanl.ARPA (05/09/85)
> Responding to the person who had bought a monitor without a speaker, > (or anyone else who may be in the same predicament).... > > There are a few things you can do. > Radio Shack sells a small amplified speaker (approx 10in by 10in) that > plugs right into the audio output. > The price of this I think was approx $20. > On the cheaper sided (for those who want sound but not excellent quality > I suggest just hooking the output to a regular 8 ohm speaker. If you > don't have the appropriate plugs, Radio Shack sells these very cheap. > like I said the sound quality is about as good as a TV speaker but the > only difference is that you cannot adjust the volume. Those who are > experienced at fiddling with electronics could probably fix this. > > I hope I was of some help to someone out there. > > Ron Zinnato Will the audio output of the C-64 drive a speaker? I'm not familiar with the output circuit of the C-64 but I know that most amplifiers (for which I assume the output was intended) have an input impedance of several thousand ohms while many speakers have impedances as low as 4 ohms. What I really wonder is whether damage to the 64's output circuit will ultimately result from excessive load. (I don't have a 64 and haven't seen the circuit diagram.) There are some speakers with higher impedance (40 or 50 ohms) but even this is a pretty heavy load for a circuit that is expecting several thousand ohms. [For non-hardware types, the higher the *impedance* of a load the less *current* it draws, thus 50,000 ohms is *less* load than 50 ohms.] Charlie Sorsby ...!{cmcl2,ihnp4,...}!lanl!crs crs@lanl.arpa