REL Vs SVS for 2 channel music listening

I wonder how many of you that are dissing or recommending other than REL have heard a REL Sub-Bass system properly set up in a good two-channel system with full-range loudspeakers?

RELs are not designed to work as fixes for speakers with poor bass response or with crossovers that alter the cutoff frequencies of the main speakers. They are designed to load the room and augment the bass response of the mains, therefore providing a lower and fuller low bass extension with more slam, as well as enhancing the soundstage size and sense of air around performers. Additionally, they can be used in out-of-phase mode to help alleviate room bass node issues.

AFAIK, they are the only sub system (other than the Sumiko knock-offs) that use a high-level signal from the amplifier’s outputs such that they see the same signal (and thus the upstream gear’s sound character) as the main speakers.

Although a few of the best "digital" subs outperform RELs in HT slam(movie explosions and such), nothing integrates better into a good two channel system than a REL unless it digitizes the signal and uses DSP to measure the room and alter the signal digitally. Even then, only the TOTL $$$ digitalizing subs better the RELs for seamless integration and positive sound enhancement of a two channel system.

REL has been around a very long time and there is a reason for that despite the higher price vs many newcomers...

Dave

Actually, many of the plate amps on Rythmik subs contain binding posts that take the output from a power amp (high-level signal), using the amp as it's source. The ones that don't are those that contain XLR inputs---the XLR2 and XLR3 model amps. Buyers are given the choice of plate amp models. All the Rythmik amps also contain RCA input jacks, for those preferring to use the low-level signal from a pre-amp as the source. 

Dave thanks for advice. RELs are still being considered. REL recommended the S3 or the T/9i for my set up

@aberyclark  back to the beginning, most music doesn't have both heavy and tuneful bass at the same time. Yes, there is plenty of music with heavy bass, example- blue man group, but is often electronic generated bass.  So the question becomes are you looking for chest thumping bass for this type of music ( for which ported will work fine) or loud and powerful bass guitar, bass drum and organ music ( as examples)in other words( tuneful bass). If it's tuneful bass, then high passing to the mains, digital bass management, willingness to relocate the sub to the best sounding location  and spending at least $1k or more are probably needed.  To test this out, buy the cheap Svs and then a sealed rel, rythmik, psa, to name a few and see if you notice a difference and then send the "loser" back. 

@dlcockrum  and @aberyclark 

Any thoughts on the Longbow wireless delivery system vs using the Speakon wired connector?