Dear @fsmithjack : Problem is not on the Pass amp, problem is how the Rel has to be connected.
What you need is to find out this remarkable active crossover:
https://www.passlabs.com/preamplifier/xvr-1
this crossover option is very good too:
https://www.ebay.com/itm/9ACCUPHASE-F-25-Electronic-Frequency-Dividing-Network-active-crossover-JBL-...
With those options the preamp signal goes to the electronic crossover and then to the Pass amp and from here to the Magico. The subs will takes the signal from the electronic crossover outputs too.
For subwoofers there are several manufacture brands to choice. For the stereo experience I prefer subs with sealed design as Velodyne that is out of production but you always can buy second hand HGS-15 that are exceptional for true high end stereo music or DD-15.
In this regards no other home audio sub can match it due that the THD of those Velodyne's is only 0.5% ! ! that's truly wonderful and this spec maybe is the more important one in a sub.
The " touted " JL audio ones are over 5%-6% on THD. There is no comparation vs Velodyne. With subs first than all we need very low distortion levels but Velodyne is not only about low low distortion levels but has very good quality level performance that can't be out performed by any other I experienced. @dgarretson can gives you more info about.
Of course that with the Velodyne's you always can use a passive dedicated frequency ( 80 hz. ) high-filter and from here to the Pass amp and the subs will takes the signal from the preamp´output directly.
I insist that you need to test your system in this way. I know you are not " prepared " for what you will listening when you do it !
Regards and enjoyb the MUSIC NOT DISTORTIONS,
R.
What you need is to find out this remarkable active crossover:
https://www.passlabs.com/preamplifier/xvr-1
this crossover option is very good too:
https://www.ebay.com/itm/9ACCUPHASE-F-25-Electronic-Frequency-Dividing-Network-active-crossover-JBL-...
With those options the preamp signal goes to the electronic crossover and then to the Pass amp and from here to the Magico. The subs will takes the signal from the electronic crossover outputs too.
For subwoofers there are several manufacture brands to choice. For the stereo experience I prefer subs with sealed design as Velodyne that is out of production but you always can buy second hand HGS-15 that are exceptional for true high end stereo music or DD-15.
In this regards no other home audio sub can match it due that the THD of those Velodyne's is only 0.5% ! ! that's truly wonderful and this spec maybe is the more important one in a sub.
The " touted " JL audio ones are over 5%-6% on THD. There is no comparation vs Velodyne. With subs first than all we need very low distortion levels but Velodyne is not only about low low distortion levels but has very good quality level performance that can't be out performed by any other I experienced. @dgarretson can gives you more info about.
Of course that with the Velodyne's you always can use a passive dedicated frequency ( 80 hz. ) high-filter and from here to the Pass amp and the subs will takes the signal from the preamp´output directly.
I insist that you need to test your system in this way. I know you are not " prepared " for what you will listening when you do it !
Regards and enjoyb the MUSIC NOT DISTORTIONS,
R.