X stands for extra
What is the REL T/9x?
The REL T/9x is the flagship subwoofer in the company’s newly upgraded Serie Tx range. Never one to do things by half, REL has done more than simply give the line-up a cosmetic make-over. Having said that, the newly upgraded range does get a revised cabinet, but there’s also an improved driver and beefed up amplification.
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