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| | | Forum Newbie
Group: Forum Members
Last Login: 27/12/2007 12:07:40
Posts: 30, Visits: 65 |
| Yesterday for Christmas I got a Celestion V30 for my Laney LC30
So I took out the old speaker and put in the Celestion, but I foolishly forgot to check which way round the wires clipped onto the speaker.
I tried both configurations (white on the left and black on the right, then vice versa), but both seemed to make the amp work.
Does this just mean it doesn't actually matter which way round they go? I've heard that when it's only one speaker it doesn't and that the importance of positive and negative only comes into play when you've got at least 2 speakers.
Or is this wrong and is one configuration going to be damaging my amp?
I'll appreciate any help I can get |
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Forum Newbie
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Last Login: 05/08/2008 07:04:57
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| With one speaker, you won't hear any difference whichever way round it is connected unless you use it with bass guitar and lots of full-volume 'slap'. Under those conditions, that first heavy transient needs to send the speaker cone moving forward against it's suspension. If it goes backward, the voice coil will be driven against the magnet, make a nasty noise, and probably end up damaged.
Thus when the amplifier receives a 'positive'-going signal from a guitar it should send a 'positive'-going signal to the speaker(s) and the speaker wires should be coloured red and black or white and black to identify the positive and negative leads.
The speaker should also have a marking for the positive terminal (a red or white dot or paint splodge) but if it doesn't, here's how to check. Get a 1.5 volt battery (a used one is fine, it doesn't have to be brand new), and clip the negative of the battery to one of the LS terminals. With one hand lightly on the LS cone, touch the battery positive to the other LS terminal. If you feel the cone go forward, you've got it right first time so mark the positive terminal. If it goes backward, mark the other one as positive.
When two or more speakers are in a cabinet together and facing the same way, all the cones should move forward together so speaker phasing is absolutely vital.
Ray Liffen |
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iMuso Guitar Guy
Group: Administrators
Last Login: 25/08/2008 11:41:27
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| Good post, Ray.
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The Man in the Jar |
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| | | Forum Newbie
Group: Forum Members
Last Login: 27/12/2007 12:07:40
Posts: 30, Visits: 65 |
| Okay then, so basically as I've only got one speaker and am playing through it with a guitar, I needn't worry for the time being about which way round it's connected.
Thanks for the help! |
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