Thiel Owners

Aloha All!

Finally FINALLY!!! got my 2.7's coupled to the room properly and am now looking at room treatments and the 30-20Hz range.

I see a few folks using REL subs.  The low point for the crossover is 30Hz for the models that I have looked at.  In my experience that isn't low enough for my room/speakers.

I don't want to crossover the Thiels I want to extend them to 20Hz.

At this point it looks like something like REW and MiniDSP to a sub using the LFE input is the best option.

Anyone tried this approach with the 2 Series Thiels?

solobone22 - isn't it lovely when you dial in your speakers to the room?

I've never used any sub except Thiel's with the matching Passive XO. I learned a few things. The 'normal' input engages the room boundary circuitry, whereas (I think) the LFE does not. That boundary interface is magic. The bottom end of the 2 series is 4th order reflex, which is optimal for matching a 4th order low-pass / high cut on the sub. The 2.7's -3dB point is stated as 23Hz (can that be true?).

I'm speculating here, but since there is so little musical energy below 30Hz, I wonder how it might work with the 2.7 running free and the REL selected for as low as you can, even if above the speaker low limit.

I do hope that folks with greater sub knowledge and experience check in. You can use REW to graph the actual system output from 0 Hz. So at least you won't get lost.

Happy Friday! All

Happy Friday! All

The 2.7s definitely aren't down 3db at 23 hz.  Stereophile says 35 which sounds right.

https://www.stereophile.com/content/thiel%E2%80%99s-new-cs27