if you dont fancy soldering, I seem to recall you can get tiny amps for guitars. Smokey amps I think they are generally called, about the size of a packet of cigs.

Quote from: Clockd 0NeDont be so dismissive and condescending, my brother ruined one of a pair of Celestion Dittons because he thought it would be a good idea to run them through his car, it seemed highly likely to me it was the impedance mismatch causing the problem.

Youll also find a lot of top end hifi kit will ask you not to try to drive speakers of unusual impedence (like 4ohm or less) without checking if it is compatible first.

Id go with unlikely on the car front.

And while at the top end you may notice some difference in audio quality (noise for example) I exceedingly doubt something costing several hundred if not thousands of pounds lacked a zener diode or two.

Call it dismissive if you like im just dubious.

For White Giants case it is not going to be an issue. were talking a simple IC op amp, driving a relatively mundane speaker.

If you want more "proof" (in inverted commas as google is about as reliable as a peadophile in a nursery is safe) then have a google for "impedence matching" and see how almost every source will say it is either a myth (wikipedia), or something left over from passive electronics and tube amplifiers.

Im not disreputing what youre saying Rich. Im simply going on my own understanding and what Ive read. Solid state devices do use impedence bridging to get around this, yes, but that doesnt mean its necessarily the most efficient or least degenerative way to pass the signal to ignore the impedence.

Theres a good roundup of things here: http://hyperphysics.phy-astr.gsu.edu/hbase/audio/imped.html. I dont trust Wikipedia the give a wholly accurate summary.

The manual for my Mira 3 explicity states to check speaker compatibility when using low impedences. Id rather be cautious than throw it to the wind and just assume any loudspeaker will match any amplifier.

I do fully agree its probably not an issue in WGs case. I did feel you were far too dismissive of what Serious had to say though.

Obviously Metalhead has a thicker titanium skull than we thought.

Quote from: Clockd 0NeIm not disreputing what youre saying Rich. Im simply going on my own understanding and what Ive read. Solid state devices do use impedence bridging to get around this, yes, but that doesnt mean its necessarily the most efficient or least degenerative way to pass the signal to ignore the impedence.

Theres a good roundup of things here: http://hyperphysics.phy-astr.gsu.edu/hbase/audio/imped.html. I dont trust Wikipedia the give a wholly accurate summary.

The manual for my Mira 3 explicity states to check speaker compatibility when using low impedences. Id rather be cautious than throw it to the wind and just assume any loudspeaker will match any amplifier.

I do fully agree its probably not an issue in WGs case. I did feel you were far too dismissive of what Serious had to say though.

From your own link:

QuoteOn the output side, a loudspeaker may still have a nominal impedance of something like 8 ohms, which formerly would have required having an amplifier output stage carefully matched to 8 ohms. But now with the active output circuitry of audio amplifiers, the effective output impedance may be very low. The active circuitry controls the output voltage to the speaker so that the appropriate power is delivered.

And I agree with pretty much everything that article says.

Yes for Max Power... impedance is important, however for the average joe bloggs building an amp and speaker setup in a box, it has no place in the thread. thats my point , My issue serious is that you had no reason to post anything about that, you could (if unchecked by myself) have caused WG hassle in trying to find a perfectly matched speaker for the output of his amp, and generally by being a busy body you helped noone and could have hindered instead.