Brian and Enrico:
You both were so helpful during my research and purchase that I
am thrilled to write this review.
I've had my F15HP for over two weeks now. The quality of the sub
was surperb from the packing, easy of installation (even though
its really heavy) and build quality through set up and control flexibility.
In my system the F15HP seamlessly integrated
for music. The system now has an extended bottom end that is accurate
with a viseral presence of the bass lines and the hit of the drums.
Feels like being there.
For home theater it enhances the drama and impact from movie scores
and effects. I have not found the limit of its output capability
on anything I have played.
My previous sub was a M&K V75 MKII. It
was good on HT, but could never integrate in my system for music.
The F15HP is not better, it is in a difference league of performance
You have a satisfied customer who will not hesitate to recommend
your company and your subs.
||Brock P. (Alaska)
Finally got my whole rig going. I can't tell
you how pleased I am with the F15HP. It is smooth, musical, and
seem to have no bottom. I have to admit, despite the rave review
I'd read, I was skeptical. Until hearing the F15HP, I'd never heard
a musical subwoofer. Nor had I heard one that didn't stick out like
sore thumb ever time it made a noise. This one, however, blends
beautifully with my 802s. During Interstellar, it shakes the walls
(and the water in my glass!); and during Gaucho (Steely Dan, DTS
remix), it provides bass that's almost imperceivable because it's
so musical. I will eventually be ordering another, so I hope you
don't discontinue them any time soon.
I've seen on your Facebook page you like to post pictures of people's
setups with your products. Below is a link to a ZIP of pictures
of my setup. My setup is:
- Bowers & Wilkins 802D2 (fronts), CM
Centre 2 S2 (center), and DS3B (rears)
- Rythmik Audio F15HP (subwoofer)
- Emotiva Audio XMC-1 (preamp), XPA-2 (power
amp for the fronts), and XPA-3 (power amp for the center and rears)
- OPPO BP-103 (blu ray)
- IsoAcoustics stands (center and sub)
- Audio Magic Excalibur interconnect cables
- Panamax MR5100 (power conditioner)
If you want to link me, I'm/brockjon (Brock Jon) on
Thanks guys and keep up the incredible work!
||Anteroth (AVS member)
Had my two F15HP now for a week and wow.
These subs are monsters. Got them hooked up with my 7 channell
system also running def tech 8080s in front and 8060s in back
so i get good base from there too. The subs rattled my walls so
hard I didnt even know my surrounds were loose until i turned
these babies on. Unfortunately my room is crap and I have quite
a few dead spots but hopefully some placement play with the subs
will help. Packaging is top notch and I will absolutely be holding
onto these packaging for moving. Highly recommend Rythmik to anyone
looking for a solid musical sub. These subs were so smooth and
clean that i thought something was wrong,, having been use to
the relatively boomier and less tight def tech subs. Mountains
above any sub I've ever had. If your thinking about it....do it.
Thanks for checking in. Yes! More than meets, it *exceeds* my expectations.
The F15HP is remarkably cleaner and more satisfying than anything
else I've heard!
I can hear more detail & texture to the low bass, plus, I've
never experience LF extension like this in a home system before.
Also I feel as if, somehow, my system has much greater overall dynamic
FYI, I did pick up a SB13-U for comparo... it was too easy not
to, since there's a Magnolia center just a couple of blocks from
me. Good sub, though it lacked LF extension in most scenarios, and
was far more distorted too (both audibly & measured with spectrum
analyzer + cal'd mic). The SB13-U has since gone back: you win!
I spent an awful lot of time optimizing setup for each sub: I tried
countless placement & tuning options. After I get a new pre-pro
(or maybe receiver), I'll decide whether I want a 2nd instance of
F15HP. The 2nd sub doesn't seem warranted strictly for the sake
of SPL; it'd be more for the purpose of calming the room modes.
Some constructive feedback for you...
- The 2nd instance of PEQ on the SB13-U was quite useful. On the other
hand, I appreciate being better able to control the frequency &
Q with higher resolution on the F15HP: narrow peaks (at e.g., 42Hz
or 56Hz) that don't coincide with their predetermined set of center
frequencies (40/50/63Hz) were hard to tame without negatively impacting
- Another feature I'd recommend to enhance your offering: a better
way to remotely control "modes" for the sub: it's quite
frequent that I'd switch between "movie mode" (20 or 28Hz
+ low damp + rumble filt) and "audio mode" (14/high/off).
I found that I just leave it in music mode now for all but the most
exciting, effects-laden movies, since I find myself forgetting to
switch or to switch back... honestly it's the last thing I want
to get up for (or even think about, for that matter) when it finally
comes time to relax & enjoy.
I've been meaning to write you & give some kudos, though I
have been extremely busy growing a new team at Apple. I do prototyping
there (hardware systems, though not audio). I find a whole lot of
joy coming home to enjoy my audio system after a long day: that
joy has been increased quite a lot with the addition of your sub.
Thanks for your efforts... keep up the great work!
||Rade S. (Audiogon)
It's been almost a full year since I purchased a pair of subs from
I would just like to tell you how immensely
I have been enjoying them. Now, their location in my room is optimal,
visually and acoustically, and their integration with my Pro Ac
Response 3.8 is perfect.
They are silent when they need to be and dramatic when they need
to be. And when they are dramatic... oh man, they can shake the
house and scare the hell out of me!
They have increased my enjoyment of music so much.
Thank you for recommending these fine subs and not making my pockets
bleed for months.
Rade S., DVM, PhD, MS, ACPV
||Fgm4275 (AVS member)
Initial Impressions on a pair of F15HP subs
Linkwitz Orion (rev 3.4) loudspeakers
2 - Genesis Technologies (old company) 700 surround speakers
1 - Genesis (new company) Reference Center channel speaker
2 - Linn Aktiv surround back speakers
2 - F15HP subs (replaced 1 Elemental Design A5-350 sub with 15"
driver/550 watt amp)
2 - Parasound A52 (5 channel amplifiers)
1 - Anthem MCA5 (5 channel amplifier, new caps installed in 2013)
Marantz AV8801 (ssp)
Infinity HD DVR
My emphasis is 75% music and 25% HT. For the last several years,
I have been using a ED A5-350. It has been okay with HT, but meh
on 2 channel music. The AV8801 easily allows the sub to be used
for 2 channel music listening. With the ED sub, I never listened
to 2 channel music with the sub in use. With the Rythmik F15HP
subs, well I am getting ahead of myself...
In the past couple of months, after speaking with Brian on several
occasions about Rythmik subs, 2 channel music, home theater, my
HT/music set-up, servo controlled subs and musical priorities,
I narrowed down my Rythmik sub choice to either an F25 or a pair
of F15HP subs. I shared pictures and dimensions of the two Rythmik
sub options with my wife . She very much preferred the option
of the two more diminutive F15 HP subs over a single F25 even
though the cost was higher. A week ago last Monday, I called Brian
and ordered a pair of F15HP subs with black oak grain and the
XLR3 upgrade. As I live in NW Houston, I was able to drive to
Austin and pick them up on Friday of the same week. Before returning
home, Brian took some time with me discussing room placement options
and to make sure I understood the function of the XLR3 amps. Though
heavy and packed in rather large boxes, we were able to fit the
pair of subs into the back of my Nissan Armada. Upon arriving
home, I discovered that the subs were very securley braced/packed
and doubled boxed. I would not be worried about having these subs
shipped via UPS or Fedex. Brian also has a very cool way of easily
removing the subs from the box (illustrated in a pictogram on
the flap of the inner box) that consists of removing all the padded
inserts but one, placing the box on its side and sliding the sub
out on the remaining padded insert. I was not expecting a great
deal in the looks department from the F15HP subs, so I was pleasantly
surprised as to the subs' handsome appearance. The fit and finish
was also top drawer.
SETUP AND LISTENING
I positioned the subs along the front wall, flanking my Linkwiz
Orions. I used a pair of xlr cables to connect the subs to the
Marantz AV8801. I ran the Audessey XT32 program and I was up and
running in no time. The Audessey XT32 always sets my Orions as
large speakers. For the next 3 hours I listened to 2 channel audio
- classical, jazz, folk, pop, blues. During this time, I switched
the front configuration back and forth from large to small taking
the F15HP subs in and out. The Linkwitz Orions with the very robust
10" SEAS bass drivers (2 drivers per channel) are very convincing
in the lower frequencies. As I mentioned before, with the ED sub
all my 2 channel music listening was done only with the Linkwitz
Orion. After installing the F15HP subs, I can definitively state
that I preferred 2 channel audio with the F15HP subs turned on.
This was true whether Audessey 32 was on or off. The Linkwitz
Orions (set large) sounded excellent without the F15HP subs. With
the Linkwitz Orions (set small) and with the F15HPs on, the music
sounded even better. On multichannel music (SACD and DVD-A), my
system has never sounded better. I have watched a couple of movies
with the F15HP subs in the system, and I can also state that HT
has never sounded better.
I am extremely satisified with the performance of the F15HP