tldr; Mid-range center with quad 4" woofers. Clear dialogue, high efficiency. Popular Reference Premiere center.
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Best praise vs top criticism for Klipsch RP-504C
“I always go by the 70% rule. RP-8000F II: $1200 RP-504C II: $550 RP-600M II: $500 Total: $2250 \* 70% = $1575 This is 62% of current "sale" price, so I'd say it's a pretty good deal. Make sure you get warranty information.”
“Look online for used Klipsch RP600m, rp500m speakers. I doubt you gonna be lucky to find rp400m speakers. They are rare and not sold for a while now. Your best bet is rp600m for fronts and rp500m for surrounds. See what they cost on crutchfield and adorama and pay attention to version II. they are newer and more expensive. Once you find something be smart with negotiating of the price. Offer no more than %60 of what you can buy them new from those websites.. Again.... just pay attention if they are normal version or II. Don't buy an rp600m ( non II) for $400 because the II version on adorama is $560 yet you could have bought the same non II version for $300 new. For center I would go for rp500c, 600c or 450c or 504c... whatever you can find in your area used. cdt 5650 is fine for in ceiling. Subwoofer wise the pb1000pro is pretty good for the price. You just need another one eventually.”
322 Reddit opinions analyzed • Last updated 2/24/2026