Subwoofer hunt

@almarg
Very helpful. Thank you. I also took notes from your line level input discussion in reply to rbschauman’s "Help Wanted Bass" thread.

Regarding the true output impedance of my tube amps, unfortunately I’ve not seen info about damping factor in the mftr. specs. There’s not a lot of love for Stereophile in some quarters, but if you are fortunate enough to own a nice piece of gear they’ve reviewed, the measurements section is a great resource going forward.

BTW - I too was surprised about that speaker level impedance spec for the SVS SB1000.  Double checked it.  Best I can tell, barring a typo on their part, 2K Ohm is the value.  

Thanks again.

@bob_reynolds 
Yes...thanks for confirming Bob.  The SVS web site is indeed where I got the number I used.  Expect I'll be talking to SVS next week...back and forth between an SV1000 or SV2000.  Will try to remember to ask about that speaker level impedance value.  The good news is, if a 2K Ohm value won't affect the power amps, a 200K value wouldn't either.  

Learned stuff, very cool.