> I have 2 unused Becker speaker boxes (specs below), that I'd like
> to use to make a guitar amp box.  I went to a local guitar shop to
> see if they sold just the amps, without the speakers and explained
> that I wanted to use it with these speakers and they told me I was
> going to ruin them.  They couldn't really tell me why it would ruin
> them, just that it would happen.  One of the guys said it had
> something to do with the fact they're 4 ohm speakers and not 8
> (makes sense, since each is half the load a guitar amp is expected
> to drive), which led me to say, "just wire them in series", and again
> I got a "it does not work like that".

On the face of it that sounds just silly. Sure, I believe everything some
till jockey tells me (despite the fact that this is a specialty shop and
they *should* know what they're talking about). Home stereo
speakers could suffer in a band, due to the likely continuous loud
content and consequent coil heating and suspension fatigue. But you
could ruin them at home too by the same process, if the speaker isn't
designed for proper RMS power dissipation, both from the cone
and the coil

I've never met an amp yet, especially a guitar amp, that can't cope with
4 ohms. Any amp worth its salt can take the crap dished out to it by
musos. Being identical speakers I see no reason why you can't put
them in series. The only proviso is that they won't respond too well to
treble and that energy will be wasted in the coil. However, most music
energy is in the nether regions, ie bass. It might be an idea to install a
mid-range, tweeter and crossover network (a) to protect speakers
from unwanted/undesirable frequencies (b) to get a better sound

> So my question for you guys is, can I wire them serially and hook
> them up to a 600 watts amp?

See no real reason why. 600W is awfully loud in a house though. 20W
would be quite adequate. I've broken a window with a pair of 300W
15" Goodmans, probably quite similar to the ones you have. Yes, I did
do it deliberately, just to see if it could be done. It rattled itself to
death

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