Official Rythmik Audio Subwoofer thread - Page 122

Awesome, its been a pleasure to working with you guys!


Thank you, I will definitely take your advice to heart!

Thursday cannot come soon enough

Anyone noticed that there is a sale going on for the FV12- 50$ off for 499$ now until May 31:
http://www.rythmikaudio.com/FV12.html

Hi,

Newbie here! I am thinking of getting an older F15 from an acquaintance. What are the differences between 2 year-old F15 and the current one, in terms of SQ and performance/output? How different is the driver? He says, it doesn't have PEQ since it's one of the first versions. How important is PEQ?

Thanks much

Soundwise I'd bet you would hear little difference. PEQ is a one-band parameteric equalizer, an EQ that lets you adjust center frequency and width. It can be useful to tame a single peak or null in your room. If you have a system/AVR that EQs the sub (Audyssey etc.) you'll be fine, and even if not you may not miss it (most low- and mid-range priced subs do not have EQ).

I have decided on the DIY route and have already started a bit on a sealed enclosure for a 15" driver.

My question is whether the $40 premium for the D1505 is going to be beneficial for a sealed version versus what it was discussed earlier in the thread that it seemed better suited for ported versions. Perhaps I misunderstood.

I have never been inclined to listen at reference levels but I will occasionally turn music up above 80dbs average. Movie/Music is 50/50.

Thanks for any advice.
Best Regards
KvE

Anyone know what Rythmik's typical delivery times are from ordering date?

They shipped my order within two business days. I suppose the shipping time would be from 2-5 days depending on your location from middle Texas.

I'm kinda waiting becasue of this comment. Will/when there be an announcement date?

I'm not sure, but I got the idea it wasn't going to be until the Fall of this year. But idk.

Just moved into my new place. The temporary room is 12x16 basement. There is a tremendous sound reflection and echoing -- even sound coming out from TV speaker is hard to listen to. Audyssey keeps saying speaker out of phase (for the from 3 speakers).
It is so bad that my 2 dual-15 sound like regular tower speakers. LOL it's not even pressurized this smallest enclosed room.

Help me tune this thing. I think I will need some sound obsorption panels but how many?

I would start by placing each dual-15 at the midpoint of opposite walls, either front-back or left-right (whichever is easier in your room). Then re-run Audyssey. Try moving the LCR speakers closer to you, at least until you get some room treatments up. Nearfield listening will let you hear more of your speakers and less of the room interaction.

Just wanted to drop a positive Rythmik sub purchase experience.

Contacted them at the beginning of the week going into the Memorial day weekend and found out they had a B-stock F12SE, perfect for my room/setup and it fit into my budget. Decided to go for it and mentioned it would be nice to have going into the 3-day holiday weekend... received it Friday, 3 days to play with it before going back to work. Of course, I looked for the flaw that classified it as B-stock while I unpacked it. It took some time but I finally found the flaw after looking for it a while... not sure why that classified it as B-stock but I'll take the savings for something I didn't notice without spending some time looking for it. Gotta appreciate the honest reporting of condition, even if you don't notice it without looking.

Integrated the sub into my sytem and dropped them an email with a question Friday night going into the holiday weekend. Received an email back on Saturday over the Memorial day weekend answering my question and it included a phone #... in case I wanted to call because my question wasn't fully answered.

Great product, great support... sub is fitting nicely into the setup, couldn't be happier.

Can't really place subs at midpoint at the moment -- one sub cable is short. The LCR are wall hung so they stay perminent there. I'm getting some stuffs from acoustimac and see how it goes.

3 48"x24"x2" panels on each side wall
2 48"x24"x2" panels on front and rear
4 48"x24"x6" panels bass trap on each of the 4 corners.

are these overkill?

Not at all if the echoing is as bad as you make it sound... Though it will surely help A LOT! you'll probably want even more panels later, however you'll find it a "diminishing return" sort of thing with each additional set of panels you put up but some really "loose" rooms can take quite a bit of absorption to make it enjoyable. TIP! You'd probably get better results by not splitting those two panels between front and rear walls, instead put them both up front for better front stage imaging. Though these panel treatments will surely help with the LCR it will do little for any freq issues you might be having below 80Hz. For those lower freqs you must primarily rely on careful selection of locations (both sub and listening position) and EQ (Audyssey) to tame the bottom end.

So I got my F12SE today and have had a chance to watch a couple of movies and listen to some music... Yes it blends beautifully with my Ascend Sierra 1's and yes it digs deep! My main concen was if it would be enough for my small theater room (12x12). My theater room is not complete but I have the speakers set up in my living room which is much larger then the theater room and after adjusting throught the movies the level is where I feel it blends very well and is set to the correct level. The sub is now less then half power! Wow this thing can hit. When I started it was 3/4 of the way up and it was rattling everything in the house. Ultimatly I am 100% I made the right choice. FV15... Whats the point. lol

FV15 is for the bigger rooms .

Got my sub yesterday and HOLY COW!!!! The FV15 crushes my room and has blended beautifully with my PSB mains and I havent even calibrated it yet, just done some tweaks by ear and feel and my whole house is shaking....

Cant wait to test this thing out on movies!!!

OMW to work, will post pics later!

Um, anything anyone tells you without detailed knowledge of your room is pure speculation. When you go to make a purchase of purpose built absorbers and diffusers better companies will offer a recommendation based on details of your space but they do have a vested interest in selling you products. I'd suggest you read chapter 21 of Toole's book as a start.

There are certain common misapprehensions about acoustic treatments. E.g.
1) You need to cover a minimum area (30, 50, 70%) of your room.
2) You always need acoustic treatments (thin poorly made absorbers are worse than none).
3) Small decorative objects can be effective bass traps.

About sub positioning: opposing mid-wall has definite advantages in a closed rectangular room but in exchange for those advantages you give up half your acoustic output. Corners can be perceptually better and you get boundary gain which can enable two smaller drivers to outperform four larger ones.

By the way, front wall treatments are often a good idea but much less so if your speakers are mounted on the front wall. In that circumstance rear wall may be better. What's in the room besides the bare walls, ceiling and floor and where you sit will matter.

Looks like at least 3 of us got new subs yesterday

The F15SE subs look great, match right up with my piano black mains. I did some manual level setting first, then Audyssey cal and played a bit of music. Then threw some HTTYD, FOTP, and Titan AE in the evening to see what they were capable of . These are the only sealed subwoofers I've used aside from the Axiom EP400 so I was a little apprehensive about total capability, but they certainly deliver.

I've got them running through my APC H15 conditioner on the high-current ports (DLP TV is only other thing running off that unit). Didn't have any issues, but a 3rd sub would have pushed me into the overload region on the demanding scenes.

Currently using an M&K V75 II, planning to get a Rythmik, been in the AUDIO Only hobby for over 20 years and this would be my first ever bought from site unseen gear. How would my current M&K stack up to the Rythmik 12 inch sub ?

^^
If you're happy with the M&K you should definitely give an F12 a listen. Under normal circumstances it would be completely unfair to compare a sub with a 75W amp to an F12 but presumably you're satisfied with the output level so you only need to assess the relative sound quality.

I was an M&K guy for years and have their THX "push-pull" 12" sub with 350 watts. It was a cutting-edge piece of equipment for its time and still performs well. However, it does not compare to the Rythmik, and I think you will be blown away by the depth and articulation of the bass content in movies and music.

By the way, I've made a very noticeable shift in my listening habits since getting the FV15HP in that I'm spending much more time just listening to music -- I'm not reading, surfing the web, or any else but intently listening to the music. The Rythmik has revealed a number of nuances in my favorite tunes.

I love Led Zeppelin, Black Sabbath, The Who, Grand Funk, etc., but always thought they were the "blunt instruments" of music. However, I've been fascinated listening to the innovative and complex bass lines of these true artists as revealed by the Rythmik sub.

Before




After


Yea I know, wires are everywhere and my HT room is a mess. I am also using some of the packaging as an isolater till my gramma gets here on Monday. It works very well btw.

Sooo I have had some time with the FV15 and its amazing, low room shaking bass for movies (Tron is a whole new movie with this thing btw) and clean punchy bass for music. I am loving it and my neighbors are probably hating me.... Its ok they are in a band and are just as loud!

What was the sub that the fv15 replaced, and what are the differences you notice? Thanks

speaking of bass...did you guys watch the new x-men first class movie yet? I can't wait to get a nice sub (hopefully the FV15HP) and that movie on Blu-ray. Wow!

The sub in that picture was a DIY ED sub that replaced an A2-300, I had 4 subs in my room when I took the first pic. That one ED DIY sub, one Klipsch RPW12 and the Def Tech towers with built in 10s. I since sold all of the subs and am down to the single FV15 and there is no comparison, hands down the FV15 smashes all of those subs!

It is sooo much cleaner sounding it took a while to get used to, but now I am hearing things in songs I never heard before. I just never had a sub this articulate to really show off some of the songs I thought I knew. These are songs I have heard 100s of times and they sound brand new all over again. Also for movies, this single sub can shake my house! My roommate is acros the house and I shook all of their shampoo bottles off of their shelves in the bathroom across the house and my sub is on an isolater!

I am glad I went with the Rythmik, for music it is sooo crisp and clean and yet it still has that low earth shattering bass for movies. My old setup was not bad but I just never knew what I was missing till I got my FV15. I think I will get another here pretty soon to balance out the room aestheticly because this guy is a work of art to me.

Hey,
It's pretty hard to prescribe without diagnosing first. So much is unknown about your room, system etc so I would humbly suggest you educating yourself about small room acoustics and the physics therein. Dr Floyd Toole's book is an excellent place to begin. He isn't associated with any acoustic treatment manufacturers so provides scientific-based facts and recommendations for 5.1 rooms rather than marketing hype you might tend to get from the manufacturers.

In short, for a rectangular room you want to attenuate front and back wall reflections as they are more harmful than good. If you're using fiberglass filled resistive-type traps then they should be 6" minimum thickness with a generous air space behind them (I use >6" air space) so that the trap is effective across a broad swath of frequencies down to the room's transition frequency which is about 300Hz or so. Besides the room's four corners you might consider the centre of the back wall for another absorption point with diffusion on either side of it. Diffusion on the side walls may be better than a 2" thick absorber provided the diffuser also works down to 300Hz. In your small room you might consider a hemi-cylindrical / polyfuser made from a Sonotube - pick up a 24-36" diameter tube and cut it in half lengthwise (making two 180 degree arcs) and space them along your side walls. Be sure to fill their interior with fiberglass to absorb bass whereas the curved exterior that faces into the room should be hard so as not to absorb mid/high frequencies. Cover in speaker cloth or sand the wax off and glue on some wood veneer, stain, shelac and bob's your uncle. Diffusion on the ceiling to reflect sound off to the sides also works well; RPG Skylines or GIK D1s are light enough that if they should fall they won't impale you.

Another thought on the side walls is to use angled baffles or boards either vertically or horizontally which is what I did to eliminate flutter echos and deal with mid/low freq comb filter effects.

Sorry to get off topic but I thought there was enough sub users that might benefit.

http://i1126.photobucket.com/albums/...ne22011002.jpg

http://i1126.photobucket.com/albums/...ne22011007.jpg

In a 2 channel setting, the sealed 15 would be overkill for a 10 x 15 x 8 room right ?

Just noticed that there is just a 20 USD price difference between the 12 and 15 inch kits

I'd buy the 15, why not...