On Feb 25, 11:49 am, Eiron wrote:
AP wrote:
Sorry if this is a really dumb question, but if I wanted to run four
speakers off an amp with only two outputs, is there a gizmo that would let
me do it? And if so, what should I look for, and what sort of cost might be
involved? Thanks for any advice.

Stacking banana plugs - about £5.
This will put your speakers in parallel. It would be OK if they were both
8 ohm and the amp will drive a 4 ohm load.

The alternative is a speaker switching box. These usually put both speakers
in series, which doesn't risk overloading the amp but can screw up the
frequency response due to variations in impedance with frequency, unless
both sets of speakers are identical.

Wiring them in series can mess up the response even if the speakers
are identical. They are designed to be fed from very low imedance
source. If you feed them from effectively an 8 ohm source then their
characteristics will change. For example, they might be less well
damped and might resonate at low frequencies.

Robert