Why would it be difficult to replicate the sound it’s actually very easy just pick the right componentsThere was something really nice about quality 12 inch woofers powered by a hefty amp way back when. Strangely, it is difficult to replicate today. I tried, and while what I have sounds good, it's not the same.
Silly picture, but those are my Polk Rti A9 speakers. Tall, with 3ea 7" woofers, and completely devoid of any real bass.
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