Musical subwoofer under $2000

+1 @gkelly. Spending a little more to get what you want is usually a good thing. I will say though that having just bought two subs I would move down the chain and split the budget to get a pair, or buy the s510 and plan on budgeting for another to complete the pair. Two is better than one.

The KEF KC62 ($1500) is the only sub I have ever used so I do not know much about other subs. However, the KC62 is fast enough to keep up with my old KEF LS50 Meta and now the Magnepan LRS+.

My understanding is that most subs are not good with the Mgnepans (too slow). This is not a HT sub.

Thanks everyone again. I think I’m getting the message that 2 are better than one and that I should budget for that in the future. REL being old school interesting as more modern offer DSP, Bluetooth etc. I have been looking at Arendal 1723 S. Thought about REL T9xi too. Lots to consider, and really grateful for every suggestion.

I agree with hilde45

Get 2 Rythmik subs, Very musical and very flexible. Plus they have a fast servo amp system. IMO. I have two and they are very good indeed.

Before you buy any sub read this first. https://soundoctor.com/whitepapers/subs.htm

In my opinion if you are not listening to loud bass driven rock of some type, the addition of a subwoofer to a full range speaker will not make a big enough impact to justify the expense. Also keep in mind that the ear is less sensitive to low bass so if you want to  experience 40 Hz at the same perceived loudness as 1k Hz. You need to be able to reproduce the 40 Hz. signal approximately 15 to 30 db louder the the 1k Hz signal depending on the 1k Hz overall volume level. That takes a lot of amplifier power.

Having said all of that I own four subs and I would never do it any other way. I own REL, Rythmik and SVS. The only thing REL does better than the other two is to take more money out of your wallet, otherwise very little difference between them except the REL can be a little more difficult to integrate well. I feel the Rythmik has a little better sound than the others but they seem to have slightly less power, so I would err on getting a larger size rather than the smaller. SVS in my experience has the better customer service.