I don't know and have never met anyone at Rythmik, I don't work for them nor do I owe them anything, nor am I being given any value for my review. Brian Ding did answer 5 emails from me and did his best to answer my questions. He is an Engineer and I am a Financial Analyst and a Guitarist (my true love) and also play bass guitar ...he uses engineering terms to describe sound ...I use musical terms to describe the same thing and sometimes, unfortunately give numbers more meaning than I should.
Searching for my first "real" subs led me on a 6 month research quest. I ended up with dual Rythmik FV15's, with the Class A/B amp. I chose the FV15 and NOT the FV15HP because of the Class A/B amp. I did not want the Class H amp in the FV15HP. To "my" ears ...class a/b offers a genuinely musical sound, while Class H to "me" seems ...."robotic", just seems to lack the ability to "breath".
My review is an attempt to thank those that helped me, and to help those in their search. When it comes to home theater, people describe the same thing differently. Engineers have their terms, home theater buffs have theirs ...and musicians have theirs as well. My review comes from the language of dynamics and musicality.
First and foremost I am a tube amp freak, I am a ANALOG junkie. My Home Theater Room is also my Guitar/Bass Jam Room. My number one criteria in search of my subs was "musicality". I did not just want booom ....booooooom .....boooom. When I play guitar I have to be able to track the bass drum and bass guitar, if I can't, I'm lost. I can't have sloppy or undefined drums or bass. More specifically I want to hear the "dynamics" of the bass drum ...the breath of the bass drum ...ie ...pitter, pitter, PAT. Same goes with the bass guitar. My guitar amp is a 22 watt all tube Fender Deluxe Reverb that is frickin loud. My bass amp is a Ampeg Mosfet 500watt head with a sealed 15". ONE FV15 would have out gunned all of my gear, two just gives me complete coverage, and lets me use less sub amp to achieve the bass volume I need.
For those that do not know about power/output ...let's say ONE sub puts out 500w and produces 120db. Doubling that amp's power only increases volume (decibels) output by 3db, in ideal conditions (placement). BUT, it also means that if TWO subs are used, you can achieve the same output as that ONE sub maxed out, with only using "half" of the output capabilities of each of those TWO subs. That is HUGE when considering how "hard" you are driving your sub/subs, and should contribute to longer life. (don't mean to be arrogant, just trying to help those unaware of how huge a factor it is).
Let's face it, subs have a dual purpose. Special effects for movies and bass for music, a quality sub should have no problem doing both. What really intrigued me about the Rythmik Subs were the audio options. 1)Frequency Select: 14hz, 20hz or 28hz. 2)Damping Select: high, mid, low. 3)Port Options: 1 port open or 2 ports open. 4) PEQ: Eq to "smoothe" out peaks/dips. 5)On/Off/Limiter Switch. The other options don't apply to me. After 5 months with the subs, "hear" are my results in my basement home theater/jam room:
The room is rectangular and about 3500cf, with two openings on one side ...one mid wall and one at the rear. Klipsch Reference Speakers (101db sensitivity = loud) powered by a Pioneer Elite (mosfet) Receiver with 120watts x 7 power.
My results? Mind blowing. Spectacular. Exceeded all expectations. I have thrown "everything" at them ...and they don't "budge". They don't strain. It's so amazing.
Every blu ray scene you can imagine ...the subs hit with 1,000% authority. Theres a scene in The Matrix where they pull into an alley, it's dark/gray and it's raining. Neo gets out of the back seat of their car and then slams the door shut. What is mind blowing is the door does not just shut ...you hear the "entrance" of the door "slamming" shut (like a deep whoosh), followed by the "THUNK" of the door shutting, finally followed by the ending bass echo of the door "having" been shut ...all through the subs. Amazing. Saving Pvt. Ryan ...the explosions "slam" you in the chest. SLAM you in the chest. War of the Worlds? The deep infrasonic bass when the pods come out ...it's as if they were "in" the room. U571? I jack with my friends, it's the first thing I hammer them with ...all is good ...until that first depth charge hits ...it "shocks" them ...they immediately look at me stunned ...then another depth charge ...then another. Their like holy sht. When they leave my basement it's as if they were in those movies while at the same time they were running a marathon. They are wrecked.
Music: I mostly play blues, rock, 80's metal and 70's pop rock. More bass then I could ever want. What's really killer for me is, all those old albums that did NOT have a lot of bass volume, they do now (you know albums with ego guitar players who had to be heard over anything Vanhalen, Iron Maiden, Scorpions, etc. Listening to Rush 2112 is a totally new experience, every, I mean every nuance of Neil Peart's bass drum comes through in total perfection. Sound Garden with these subs is mind blowing. Finally I can feel the bass drum and bass guitar on par with those raging stacks that used to scream in my face. Tool? Chuka dunna, Chuka dunna. Those bass lines are infrasonic sledgehammers! Hip/Hop, Rap ...out of this world BOOM!
Every single one of my friends basically crap their pants when they experience these subs. Placed in front, out from the side walls about 3 feet, the couch is 12 feet away, they can blow your hair! What's really a trip is ...it shakes the couch ...this trippy infrasonic type of shake ...you know that bass so low you can't hear it ...but your body is vibrating along with the couch. I didn't mean to, but I've blown out light bulbs ...and knocked down popcorn from the ceiling, and blown picture frames sideways.
The audio options are subtle (thank god), but actually work, and work well. The subs are naturally tight to begin with b/c of the servo control (another reason I went with the Class A/B amp and not the Class H amp. I've found the Mid setting is as tight as I need for music. If I want BOOM for movies, frequency down to 14hz, one port open and damping on low. If I want ultra tight and dynamic punch for music ...frequency at 28hz, both ports closed and damping on high ...and still deep powerful bass. I haven't even mentioned the PEQ. I don't have a frequency analyzer ...so I did it by ear ...subtle but just seemed to "smoothe" out the response.
I very well may have been satisfied with a few of the others subs that made the final three on my list. But, I am overwhelmed with what Rythmik sent me. The ability to produce sheer volume and punch with complete control over the dynamics WHILE also having the ability to stuff a port, flip a couple of switches and shake my foundation with infrasonic bass is mind blowing. What may be most impressive is that the subs do ALL of this with out any strain or effort, this gives me peace of mind knowing this will contribute to a longer life span. I honestly don't have a single complaint, not one. The price? Sure, I didn't enjoy shelling out the money for two of the subs ...but after experiencing them ...they were worth every sing penny ...and I would do it over without hesitation.
Again, I have nothing to gain from Rythmik Audio/Brian Ding. I simply feel an obligation to share my experience in totality with those searching for "their" sub ...and to let Rythmik know exactly what I liked and how satisfied I am by sharing that satisfaction. Brian was friendly, and spent his time responding to my "jacked" up musical questions about the subs abilities. I also felt a deep desire to do business with a "man", and not a mega corporation. The subs came double boxed and could have been shipped around the world and back without damage. Each box looked like a German Shepherd Dog House, UPS man said he had never delivered a Sub Box like them before, he was stunned when I told him what was inside. They are built like tanks and back it up with musical dynamics, gut pounding punch and foundation shattering infrasonic bass. Zero, absolutely zero buyers remorse and total satisfaction. If there were a negative, it would be the length of the warranty, 2 years. For the price of these beasts, I would have hoped for at least 3 years. I would have paid a little more for a 5 year warranty. Thanks for reading, please feel free to comment or ask questions ...and please forgive me if my review offended you.