I don’t think you will have a problem finding them. Go to the Used cables site. Used cables are a great deal. They generally sell at half price. So your budget would be $2k new... a good category to be in. Six or seven meter interconnects come up now and again.
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A better solution is to leave your amp between your speakers and have your rack to the side, eliminating the central obstruction. Get long interconnects. XLR preferred but by no means required for that short of a run.
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A better solution is to leave your amp between your speakers and have your rack to the side, eliminating the central obstruction. Get long interconnects. XLR preferred but by no means required for that short of a run.