On Jun 21, 10:52*am, "The Medway Handyman"
wrote:
Looking to get some speakers for the decking, so we can have a little music
outside.

I've seen wireless ones which transmit from the hi-fi, but they need
plugging in to the mains, which rather defeats the object - no power on the
deck.

They don't have to look like rocks or anything.

SWMBO has some wireless headphone which plug into the 'phones' socket on the
hi-fi (Sony).

So, question is; *Can I just use a speaker extension lead of say 10 metres
which will plug into the 'phones' socket and connect the other end to some
outdoor speakers?

in most cases no, as most hifis have resistors on the 'phones output.
You'd probably need to connect to the speaker conns at the back, and
have a switch to turn them on or off.


*Like these?http://www.maplin.co.uk/Module.aspx?ModuleNo=221776*I could build a box for
them out of deck boards

Would I lose anything over the cable length,

over 10m the power loss is trivial

what ohms do I need &

most hifis use 8 ohm speakers. BUT any time you're running 2 sets of
speakers at once you'd need to change the impedance you use. Simplest
optin is to use a switch to switch between indoor or outdoor speakers,
then 8 ohms will be fine.

If you look on the back of the hifi, it might say 4 ohm or 6ohm. If
so, 8 ohms is still fine but 4 or 6 would give you maximum available
power output.

how would
I connect the cable to the speakers - bearing in mind I am to electronics
what Colonel Custer is to Indian fighting.

amp L+ to speaker L+
amp R+ to speaker R+
amp L- to speaker L-
amp R- to speaker R-
hard to go wrong - just get both speakers connected the same way round
or you lose bass.

And dont point them in opposite directions or ditto - or if you do
want to, reverse the wires on one of them.

A 6" 1 way driver with random cabinet isnt gong to equal well designed
hifi speakers in sound quality, but hopefully they'll do. Can't say
I've even seen hifi quality waterproof speakers.


NT