nordost red dawn: problem, please help


all you smart guys:

i have been running an arcam A80 integrated amp biamped with an arcam P80 amp using nordost blue heaven version 1, 4 metres set up for biamping. i have had no problems running the volume up to very high levels. i just installed a set of red dawn version 2, 3 metres terminated exactly the same.
with the red dawn, at about 75% power, the amp driving the bass will shut down. it will come back, but the volume must be lowered.
the speakers are aerial 6's. they are not too efficient at 86db and are power hungry.
i can't live with it this way. if i can't find an answer, i won't be able to keep this and i think it sounds better from what i can tell.
help please.
thanks in advance.
tomcollins
The cables are not your problem. Blue Heaven are very good actually. Red Dawn is a bit bright for me but....nevertheless... It sounds like you need more watts or a more efficient speaker. It sounds like the protection circuit is cutting in.
string: thanks for the reply. that is what is happening. do you have any suggestions?
I agree with Stringreen's assessment. Put the blue heaven back on and see what happens. Check all of your connections too.
..you seem as though you like to get your hands into it kind of guy. I built a Dynakit years ago. It worked right after assembly, was fun to build, and sounded very good. I understand that they are available with updated boards, etc. You might take a look at those with perhaps an inexpensive passive preamp