I suppose it would be ok to have a bigger amp if the speaker cables are fairly long. There's quite a lot of loss on a cable and a higher powered amp would compensate for the loss. Trouble is, someone will then use it with short cables and overdrive the speakers.
Sorry, yes it does. The thing with underpowered amps is they are more likely to clip before you hear distortion from the speaker, so when you turn it up to 11, it clips, the power doubles and your speakers very suddenly go bang. With an overpowered amp, you approach the limits of the speakers gradually and you can generally hear them start to distort (they tend to reach the limits of the cones excursion and make a fart like noise). It starts to sound very bad usually long before you actually damage the speaker.
Clip means that the signal peak is cut off - the output of the amp effectively changes from AC to DC and as a consequence of that, the power increases (twofold is about right). It doesn't put the power from one speaker to another, you can happily blow two speakers at a time :-)!
When setting up, you should connect up the cables to the power amp before switching it on (inputs and outputs). I personally tend to set up with volume switches turned down. Occasionally I've had components in the chain go awry in peculiar ways and apart from anything else the results can be very horrible and very loud. It's nice to catch them before they cause hearing damage.
A more powerful amp is correct, but... You do need to set the gain structure correctly, or the speakers are toast. Less likely that with an over-driven, underpowered amp, but possible all the same.
being a Hi-Fi enthusiast I advise to get an amp rated to match the power of the speakers,
if you under-power your speakers you'll damage the amp as the amp has to work harder to power the speakers possibly even blowing caps if you don't have proper relay protection inside the amp circuitry, you also don't want to over power your speakers as you can blow them if you don't have speaker protection within the amp, some amps will detect what power speakers you have an add cut in protection if the speakers are being over powered if you've cranked the volume.
Blimey, I wouldn't even want to do that in my living room. But "hi-fi" does send people down peculiar paths in the name of alleged improvements in sound.
Stand by for a descent into Russ Andrew's "Snake Oil" territory...
I designed and put in a system here, consisting of a Crown amp, Behringer EQ, Behringer rackmount mixer for 'day to day' use, Denon multi-disc cd/dvd player, and a Yamaha mixer for performance usage. XLR looms all over the place - so things can be plugged in easily.
The system is split in 2 - the mixer/eq/patch panels are locked in one cabinet, and the rack mixer and cd player are in a second. That way we set the levels on the amp etc... and lock it away. Then the day to day users can't break the speakers or amp.
We've also just ordered 4 Sennheiser XSW mics in a portable rack flightcase, which we can pull out when needed.
We followed a similar approach for our lighting. We have a Jester desk for the performance stuff, but day to day, they use a simple, cheapo 6 channel one in drama.
May I ask what speakers you're using with your setup? I've been roped into a meeting later and they want to know estimate costs. (Yeah I found out I was involved in this an hour ago). Our current system uses 4 speakers (old tinny things) and there's no bass what so ever. We're losing out on potential external business because it's not fit for purpose. A dance class was cancelled because it didnt sound good. Could I also be cheeky and ask how much your setup cost (ex fitting) please? The amps, speakers, mic's and mixer.
Sorry, I'm honestly not being too lazy but it'd give me a good idea what to put forward. We have a hall that sits about 300 people (using chairs) to give you some scale.
Thank you!! :D
They are DAP speakers, 2 x 15 speakers. Can't remember what it cost sorry, something around £2k IIRC. We sit about 300 kids in our school without chairs.