Replace piezo speaker w/ real speaker

oneweb

Anyone know how to do this? Can I just replace the speaker part for part or do I need extra components?

Capt'n Midnight

In what ?
And why ?

If it is a PC then the onboard speaker is drives by on/off ie. not analog - also Piezo has a very high impedence - most speakers will be 8ohm which will appear to be a short circuit to the chip driving the speaker - so unless you are sure the output includes short circuit protection (eg speaker is in series with a capicatior - like in the older 486's that had speaker connnectors) Wouldn't recomend it.

So in short - if you have a 4 pin connector on the M/B for a speaker happy days - if you don't then you'd most likely need a buffer to protect the speaker driver line from Short circuit (and perhaps a freewheeling diode in there somewhere)

oneweb

In a PDA. The software can play music, but 'cos it's only a piezo speaker the sound isn't brilliant. Sounds like it'll do anyway. Thx

Redshift

Does your PDA have an auxillary output like for headphones if so you might be able to do something with that, but as for changing out the piezzo for a speaker deffo not recomended, but maybe you might be able to to locate a better quality piezzo which might do the trick just make sure it compares to your existing one for impedance, voltage ect. Before you do anything ask yourself if it's woth the risk of ruining your PDA because those things aint cheap.

oneweb

Originally posted by Redshift
Does your PDA have an auxillary output like for headphones

If it did, I wouldn't have asked

I'll be leaving it alone

Redshift

Originally posted by oneweb
If it did, I wouldn't have asked

I was going to suggest installing a small speaker in the pda but soldering it onto the output for the earphone jack if one was available.