Rythmik Vs REL Subwoofers - What to Buy?


I have an L Shaped living/dinning room.  The living room measures 13.5'x18.5' and the dining room measures 10.5'x13.5".  I have a pair of Paradigm Prestige 85F towers along the 13.5' wall hooked up to an ARCAM AVR550.  They are currently placed 8' apart with a 72" stereo cabinet between them leaving 45' on both sides of the cabinet.  This wall shares the outside 13.5' wall in the dinning room.  There are two 3' walls that narrow the opening to the dining room.

I am trying to decide what subwoofers to add to my system.  Three dealers suggested I add a pair of subwoofers rather than adding just one based on my room dimensions and room layout.  I am trying to decide between adding a pair of Rythmik F12 Signature subwoofers or a pair of REL T/9i's or a pair of REL S3's and locate them next to the towers.  However, because of limited space I may not be able to consider the S3 subwoofers, as they will crowd my towers more and it will most likely require moving my towers closer together from 8' apart to 7' apart.  The dealers I have talked to suggested I locate the subwoofers in the corners.    

I have an upright piano along the 18' wall to the right and I would prefier to use just one subwoofer located to the left of the piano located approximately 5' to 6' in front of the right front speaker.  This would prevent cluttering the wall where my towers are located and it would make our room look better.  If I locate just one subwoofer next to the piano, the speaker would point directly into the opening of the dining room.

Could you please advise as to whether to go with a Rythmik or a REL subwoofer?  I like the idea of the Rythmik Direct Servo technology.  The amplifier in the subwoofer has the ability to boost lower bass frequencies at lower listening volumes to prevent fall off.  However, would they sound too boomy?  I talked to a highly regarded speaker manufacturer and he told me if I went with the T/9i's, they rated them to go down to 28 Hz at -6 db.  He told me based on this, they would actually be lucky to play down to 35 Hz.  He went on to say this is woofer rather than subwoofer territory.  I have listened to both the REL T/9i and the REL S3 and I was not able to hear a significant difference in bass extension when they were played with a pair Bowers & Wilkins 702's.  However, I liked the way they blended in with the main speakers.  They were seamless and I swore all of the sound was coming out of the towers.  The problem is there are many recordings that contain bass frequencies of 24 Hz and possibly lower and if I go with the REL's I would not be able to hear anything lower than 35 Hz.  The Rythmik Signature F12's play down to 14 Hz.  The speaker manufacture I talked to makes custom Rythmik subwoofers and he told me the Rythmik subs are the most musical subwoofers he has ever heard.  Rythmik sells only direct and it would be helpful to be able to hear one before making my decision.

I listen to 70% music and 30% HT and my first priority is music.

If you were in my shoes, what would you recommend I do?
128x128larry5729
At least in regards to Rythmik’s 18” models, they are extremely “musical” as shown in the measurements, they have little “overhang”, have low distortion, get loud (good for dynamics), etc.
I have F12 and F15 subs and the 15 is the better for pure depth. The F12 hits hard but not deep - it is very tight, though. Together they sound good for the cost.
larry5729 (OP) What did you end up getting? I am looking at two Rythmik F12G-SE for my stereo rig. Also had been looking at REL T9i....
I preferred the G12G to the S/3. Faster, better bass more adjustments cheaper newer. I found the 12 deeper than that S/3 but that was going on memory.
2psyop,

I ended up with a pair of REL S2’s.  Their high level connection made more sense because I wanted them to seamlessly act like an additional bass wofer on my towers.  REL told me they would also take some of the work load off my towers to produce better mid range voicing.  The key is making sure you do not set the volume too high on the REL’s.  I set mine at 40%.  I wonder what others set theirs at.  I just didn’t want the bass to sound too boomy.

It would be nice to have my system set up professionally.  One dealer specializes in Master Setting speakers.  I read up and pulled my towers further away from the way and put the REL’sin the corners.  I measured both speakers from back corners of the speakers from the back wall and the front corners of both speakers from side ways to make sure everything was the same on both sides and pointed each speaker perfectly to the listening area.  I did the same with the REL.  I was amazed by the difference in sound.  Pulling the towers forward from the back wall 18” made a huge difference.  If I had to do it all over I would still go with the REL’s.