JL Audio Fathom

Dear @james633  : All speakers ask for current not voltage.

Before I posted in this thread I analize the Sabrina and Mac and from this " bad " realationship " I gave my advise to the owner to change the subs for ones that uses low and high pass filters crossing at around 100hz and with that the Mac will be running alot better in the 4 ohm tap and the subs will handled from there and down to 16hz and with all those the owner system will be improved in its overall quality level performance.

He says that is satisfied with the ML subs what seems to me that he has a misunderstood in the whole subject.

R.

Yes the correct answers is a high pass which will fix “everything” and take the system to another level. On the 8950 you can pull the bars out of the back that separate the pre-amp and amp to rout wires to the crossover then back into the amp portion. 
 

JL Audio CR-1 $3500 (analogue)

Sublime Acoustics K231 $600 (analogue, probably as good as the JL, new model has balanced inputs) 

Harrison Labs inline highpass  $27 ( single capacitor installed between the preamp and amp). This will be a 12db slope on the Mac’s input impedance.

Hi @james633  : " Harrison Labs inline highpass  $27 ( single capacitor installed between the preamp and amp) " 

It seems to me the best alternative/option for @upstateaudiophile  As a fact I'm doing something similar directly in my ML 20.6 monobloks that are coupled ( by design ) at the input and it's here where I changed the input cap for a lower and better quality cap that makes the high pass at around 87hz.

Your very good advice.

R.