FWIW I believe that I heard that JL has new subs with higher input impedance to address this issue. I almost bought a Ref 6 before discovering that it’s a poor match with my 10k sub. Turned out to be fortuitous as I discovered an unbelievable solid state pre instead.
Preamp & Subwoofer impedance mismatch?
I have Primaluna Dialogue Three preamp which according to Stereophiles has around 4000 ohms output impedance at around 20Hz and 2400 ohms output impedance at 1KHz and 20KHz
Right now I am hooking it to a Parasound A21 with input impedance of 33K ohms
However, I want to add a JL Audio E112 to my setup and was on planning using the build in high pass filter feature of it
The problem is, I just find out E112 has input impedance of only 10K and concern the mismatched impedance between my preamp and E112 will cause bass roll off
Do you guys think if I can eliminate the issue by add an active crossover between the preamp and subwoofer?
(I am looking at either JL Audio CR-1 with unbalanced input impedance of 50K or Marchand XM66 which either has 50K or 100K input impedance?)
Right now I am hooking it to a Parasound A21 with input impedance of 33K ohms
However, I want to add a JL Audio E112 to my setup and was on planning using the build in high pass filter feature of it
The problem is, I just find out E112 has input impedance of only 10K and concern the mismatched impedance between my preamp and E112 will cause bass roll off
Do you guys think if I can eliminate the issue by add an active crossover between the preamp and subwoofer?
(I am looking at either JL Audio CR-1 with unbalanced input impedance of 50K or Marchand XM66 which either has 50K or 100K input impedance?)