Thiel Owners

Your 7b have plenty of current at normal listening levels. In parallel, they can handle 1- 3 ohm speakers effectively. In my testing, I never could tell the advantage of the parallel setting, as my SPL is modest, rarely exceeding 80 DB.

Hi Tom,

Thanks for the info.  I was actually very surprised to find that large a value for the cap at 400uF+.  Is it because the intrinsic impedance of the driver is somewhat low?  Or is more has to do with the time-phase aligned nature of the xover?

Thanks.

Andy -  the circuits control the drivers for a net 6dB / octave slope all the way down, including the interaction with the top end of the port where another pole is added to the top end of the woofer xo. Various conjugate circuits are applied to counteract bare driver anomalies. Since the usable driver range extends more than 3 octaves beyond the crosspoint, drastic measures can be called for.

As I said, I doubt that Jim would have tried to cross that midrange with that woofer, requring so much attenuation. He would have developed a smaller midrange with a higher natural bass roll out, to better match the 8" woofer with less brute force required.

jacksky

Thank You for citing your system- especially the cables! 
Keep us posted as you massage those Thiel speakers into your room/system.  Bryston is a sonic match.

Happy Listening!

Some Bryston’s are compatible with some Thiel’s.