Re: that first video....

What speakers?

(heh heh)

You're supposed to be looking at the pair.....OF SPEAKERS :no:

Hank I thought you might want to see this (If you haven't already) This rather ingenious gentleman has set up his sound system with it's own 12 volt deep cycle battery, so that his electrical's don't get over loaded or drained.


http://www.youtube.com/watch?v=vvyiSSdJSh8

Hi
Outstanding
I was thinking of going with a seperate battery for the stereo amp just have to put it on the battery tender every night to ensure a full charge for the next day of use
Thanks ever some much for posting the video, it shall be of great help to me
Take care and ride safely dear friend
Yours Hank

You're most welcome. BTW, he does just as you said, and puts it on a tender at night.

Depending on how many watts the radio is.

Check Amazon for an amplifier called LePai LP-2020A.
It's a very tiny bright sounding amp, peaks at 25Watt, but it's usable range is 2x7W RMS @8Ohms per channel, or ~12-15W @4ohms per channel.
It's not very powerful, but if your speakers are efficient enough, this amp might be just good for the small cruises.
Those small amps are really great if your SPL levels of speakers are above 89dB W m

I suppose those water speakers aren't very efficient.. Perhaps in the seventies or beginning 80's of dB.

They have a Dayton Audio DTA-100a amp, with 2x15W, which is not going to be much louder, but is more expensive.

These amps will not draw more power than your scoot can supply!
In fact, the Lepai LP-2020A uses merely 2W in stand by, and just as long as you have sufficient efficient speakers, they work quite nice!

I have one of them installed in my livingroom, powering 2xBIC America floor speakers (the one with the 4 drivers), and it's more sufficient to watch movies.
Those BIC's are 89dB SPL though, so they're pretty loud by themselves.

The LP-2020A uses less power at max volume, than my Yamaha Surround amplifier, which uses 30W just being on, without music...

You might as well just install a larger capacity battery (like a 9A battery).

If you check he's got a 100 watt system in his scoot, also went to the DWG website to find the db rating for speakers, (no such luck...yet) I just might call them tomorrow for the low-down, but I suspect they may indeed be louder than you might think.

The trick is to find good and efficient speakers.
Some speakers work like crap, and need a poweramp to power them.

I've heard some speakers 82dB SPL, powered by a 100W power amp, while 89dB SPL speakers can be just as loud with just 1/4th of that power.

For every +3dB you need to double the amp's power.
Choosing good speakers, is a first step.