Hello,

My amplifier/speakers have recently started playing funny buggers. It's
a Cambridge Audio A5 biwired in to a pair of Eltax Liberty 3+.

The speakers appear to have become out of phase somewhat or somehow --
not entirely out of phase, but enough to be noticable (and annoying).
I've ensured that all the cables are of the correct polarity.

It's also developed a strange frequency shift -- there's a big mid
"hole" in the left hand speaker, which seems to have transferred itself
in to the right speaker -- consequently, there's some audible distortion
from the right speaker, which seems not to be going as low or high as
the left speaker.

The amplifier pre-out and tape-out do not exhibit this problem when
monitored through an additional headphone amplifier.

I've also noticed that the amplifier is not as loud as it used to be --
a comfortable listening volume used to be on the third notch up. Now it
needs to go to the fifth for a comparable level. No matter how hard the
amp is driven, it just doesn't seem to get loud.

Does anyone know what it might be? I have no spare amplifier or
speakers to investigate individual apparatus here. At the moment, I'm
suspecting the amplifier's PA stage to be knackered -- unless a faulty
crossover in one of the speakers could be causing the effects throughout
the system?

Any thoughts, let me know. And Merry Christmas.

Cheers,
N.

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