Subwoofer match for Harbeth 30.1

If you are open to used, I believe that the definitive match is the
REL Strata III . I have seen them in the $8-$900 range. I have one which I use with compact 7s and feel it is a fantastic match. It isa sealed 10 inch downward firing design. If you look at the old reviews, I think you will be impressed. In its day it was hands-down the most musical sub woofer. The Vandersteen is clearly also a good choice.One drawback however is that it is designed to match with a speaker that goes down to 40 Hz. There will be a slight mismatch with the 30.1.

I use a REL Strata III with my 30.1's. It is a good match. If you go with a REL forget about the stock neutrik cable and upgrade it.

Bob, I had the B1 with Harbeth HL-3s some years ago. It was great, and I think you would be fine with this sub and speaker combination. That said, unless it is important for you to match wood grain finishes, I would not count out the newer RELs or the JLs, for that matter. I currently have the JL E-112 paired with KEF LS50s, and depending on the music you listen to, the JLs have a nice 'clean' (accurate) bass response that pairs well. I would also recommend the older REL ST series. While I liked the Britannia B1, it did not seem to load the room like the ST series did (I had a storm some years before). But either way, I think you'll be well served by either brand. The RELs are musical, as everyone says. The JLs do put out more low bass, as the measurements suggest. Also, as another data point, I have had 3 RELs and never had any technical problems with them. They are well made and the amplifiers seem to work forever.

Bob, you might try a REL T5. I use this sub with my SF GH's, as the sub can keep pace with these speakers. Perfect blend down to about 35Hz. If you have a small to medium size room, I think the T5 would be a very good match up with the Harbeth 30.1's.

Thanks! Great suggestions all. Keep them coming...