speakers/ohm's Q !

Post by **ELVIS** » 29 Sep 2007, 20:16

have a unit that requires a 100w speaker but online manual i found states 11ohms , only uk loudspeaker i can find is 8ohms , will it work/not work/perform less/explode/make me pregnant ?

Post by **VWCamperfan** » 29 Sep 2007, 22:57

The lower the Ohms, the less resistance eg. 0 Ohms would be like a thick lump of copper wire or the bodywork of your van.
As Ohms is a measurement of resistance, the higher the Ohms, the more resistance there is.
What you dont want to do is go below a stated Ohmage rating.
So if your amplifier states 11 Ohms then its not adviseable to go below or lower than that figure otherwise you would be soing closer to 'shorting out' the amp.
The next common Ohmage for speakers is 16 but you could wire two 8 Ohms speakers in series to sive you 16 Ohms if applicable.
If you think it may make you pregnant however.... Can I be your manager?!!!

Post by **ELVIS** » 29 Sep 2007, 23:02

the 'unit' is an american ex police/fire n rescue siren siren

http://www.youtube.com/watch?v=NbkfHz3TteU apparently need 100w and 11ohms

Post by **VWCamperfan** » 30 Sep 2007, 08:37

Found these...

http://www.carson-mfg.com/siren-speakers.asp
http://www.copquest.com/71-3000.htm
http://www.onusdesign.co.uk/acatalog/Sp ... tbars.html

Do a google for 'siren speakers uk', see what you find!
Bit expensive mind!

Post by **ELVIS** » 30 Sep 2007, 09:58

already thought of that!

onus sell em for £60 but are rated at 8ohms , specialist emergency vehicle companies want silly money

yank ebay here i come then .......................