Thiel Owners


I just scored a sweet pair of CS 2.4SE loudspeakers. Anyone else currently or previously owned this model?
Owners of the CS 2.4 or CS 2.7 are free to chime in as well. Thiel are excellent w/ both tubed or solid-state gear!

Keep me posted & Happy Listening!


Hi Thiel speaker aficionado!

I have a question regarding a low frequency powered subwoofer speaker addition to my stereo setup. In my case its the CS2.4 towers and Pass Labs X150.8 stereo amplifier along with one REL S/812 powered sub.

Out of the gate I can tell it’s more than capable of producing more LF than will ever be needed so its in a good location. (front corner facing the listening position directly behind left channel speaker) Connected up via the high level speakon input connection directly from the Pass amplifier to integrate seamlessly with my CS2.4 mains.

Does anyone have tips tricks to get optimal crossover adjustments dialed in perfectly? I’m going mostly by ear and its currently set to 12 o’clock at the level/gain knob and 2 o’clock at the Crossover knob. Phase switch is set to 180"

Measure from the listening position (every room will not be identical).  If you don't have an RTA, Studio Six Digital has an App (called Audio Tools) for IOS or Android and Parts Express sells the Dayton Audio IMM-6 mic (for just over $21) which has an individual calibration file (for the specific mic).  Also, REW (Room EQ Wizard) is free, and Parts Express (Dayton Audio UMM-6) and others sell USB mics for use with REW.



Nice combo- CS 2.4 and Pass Labs  X150.8- stay tuned until one of the Panel members chimes in to address your query.


Happy Listening!


Thank You for chiming in to address velocityofhue 's query.


Happy Listening!

ok great! I do thank you for the advice and recommendation Cascadesphil. I didn't know if a certain frequency is best to have dialed in on crossover but it sounds like each setup differs depending on room acoustics. The test mic will give the software roll off points I assume? Sorry if that sounds like a numnut its just I'm all very new to this. I've never owned a subwoofer before



Jafant The X150.8 is incredible sounding. High end sound right from the start. Thank you for a compliment.


"The test mic will give the software roll off points I assume?"  One uses the mic with pink noise (there are free downloads as well as test discs).  I usually measure with the subs turned off.  In a room bass frequencies sum.  So one does not want to have the main speakers producing the same frequencies as the sub and causing a bass bump at certain frequencies.  So note where the mains start to drop off and set the Rel accordingly (I currently have a pair of Rel S/812s in the main system) and then test again and get it as even as possible without peaks and dips in the lower frequencies.  I also use room treatments.