Thiel Owners

The proper place to cross over an added subwoofer (and I've owned a bunch of Rels (over 20 years) is first to measure where the mains drop off in your room.  Bass frequencies sum.  So if your mains and sub are playing the same frequencies you'll often end up with a bass bump.  So you'll want to set the crossover just below where your mains drop off.

Measuring does not have to be difficult or expensive.  If you have a smartphone, Studio Six Digital has apps, both ones that cost money and free ones (including an RTA).  Then you'll need pink noise and it can be downloaded (or bought).  There are free downloads.  Lastly, you'll need a mic for the smartphone.  Parts Express sell the Dayton Audio IMM-6 mic (it used to be cheaper - think it is around $22).  The mic comes with a custom calibration file that you download after you get it.

If you have a lapton and prefer to use REW (Room EQ Wizard, which is free) or another program, Parts Express sell a UMM-6 USB mic.  It is more money but it depends on you preferences.

fsgattuso

Welcome! Good to see you today. REL is a Sonic match for your 1.5 speakers.

A cross over point is 80Hz.  Between speaker and subwoofer. As above, consider implementing 2 subs and measure the main drop off frequency.

I look forward in reading more about your Musical taste and system.

I enjoyed reading your CD player thread as well.

Happy Listening!

Thanks for the replies. To Unsound, I I just placed these 1.5s back in after a 6 year break. In 2016 both tweeters blew. I was using a vintage Dyneco amp and just turned it up too high. I decided to place on the side and replace with Tekton Lore. Very different sound. I was recently had the tweeters rebuilt and although there is less bass than the Lores the 1.5s have a much more pleasing midrange. I saw a pair of 2.7s for sale on Ebay for a good price but they have a 100 watt minimum amp requirement. I'm runningba Prima Luna Dialougue HP at 70 watts. So that's why I'm considering subwoofers. 

It's no accident that the 1.5 hung out on Stereophile's Class A (limited bass) ranking for 5 or so years. I used it for the past 7 years at our small village live performance venue to startlingly good results and reviews. I used it with a Thiel SS1 and Thiel's Passive OX set for the 1.6 (very similar bass parameters.) I paired it with a Prima Luna, which is a nice sonic match. Plus the 1.5 is in my upgrade sites. It's quite a little honey.

Happy Friday! All