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Official Rythmik Audio Subwoofer thread - Page 354

post #10591 of 15160
Quote:
Originally Posted by comfynumb View Post

Hi, explaining things like you did makes sense to me. Now to the good part, is the F25 good for both music and movies? My current sub is a Def Tech supercube 1 but it's getting drowned out by my other speakers and I've pushed it too hard. Thanks.

It is easier to transition from a PR sub to ported sub. I'd recommend FV15HP.
post #10592 of 15160
Quote:
Originally Posted by comfynumb View Post

Hi guys, I'm considering a Rythmik sub or two to replace my worn out Def Tech sub. It's nice to see that a Rythmik owner or rep is on this thread. I have a large open and acoustically unfriendly room, my fronts are Revel F52's with a JBL PC600 for a center and a pair of Pinnacle BD650's for surrounds. I'm currently 60% music 40% movies, so the sub(s) is/are playing double duty. I'm wondering if the F15 HP would be the right choice. I like that it's front firing, sealed and seems to have enough power. I don't like that the fact that I would have to pay extra for XLR inputs and spiked feet. Can someone explain servo a little better? And do they come with a grill?
As another option would the F25 be good for music as well as movies?
Thanks,
John.

John---I paid extra for my XLR2's, but a lot of users, if not most, don't want or need XLR's. Why force them to pay for parts they'll never use? Forty bucks for four XLR jacks is reasonable, no? As for spikes or rubber feet, Parts Express sells a bunch of great ones, for under ten bucks for a set of four. I like that I could pick my own, rather than have Rythmik pick them for me. Just my opinion, of course smile.gif
post #10593 of 15160
Here's a heads up for anyone who wants one or two (or three or four!) Rythmik 12" ported subs, but wants it finished in a way that Rythmik is out of stock of or doesn't offer. Or, for anyone who already owns a Rythmik sealed 12" sub or two, and wants a little more output from 20 to 50hz. At the website diysoundgroup.com, a great guy named Erich (a well respected name in the DIY community) is offering subwoofer enclosure flatpacks (cut but not assembled). He has a 4 cu.ft. ported box for 12" drivers, dimensions 19" tall, 18" wide, and a little over 28" deep, priced at $120 plus shipping. They are very well made, CNC cut out of 3/4" MDF, the double thick baffle cut with recesses for one 12" driver and two ports, and good internal braces. The only cut you have to make is for the plate amp. So, a Rythmik DIY kit (or the parts from the F12 you already own), a bottle of glue and some clamps, finished however you want (painted, veneered, etc.) and you've got yourself a great, customized to your own taste, ported sub. And not just any ol' ported sub, but a Rythmik!
Edited by BDP24 - 9/8/13 at 1:18am
post #10594 of 15160
Since no one seems to be over at the DIY Rythmik thread I'll mention it here. I made all of my sub cabinets from mdf painted with Duratex,the subs mostly can' t be seen from within the theater itself they are hidden behind panels etc. Brian hooked me up with a new Hx800 f25, adding to my other two f25's(600watt) version and two f15's. I moved the new hx800 to the rear center of the back wall recessed into a cavity designed to contain a subwoofer. I put my two f15's at the front center between where the two other f25's are located. I now have a total of eight 1501 drivers with their amps. I'd like to take the two f15's and instead design a cavity so they can be placed at the rooms sides midway left and right walls covered behind panels, that'll be my next theater project. The HX800 is a powerful articulate sub the sound quality is way above the price point and the features are many. I'm still playing around with this baby and setting it up . I read elsewhere on this forum some guy bad mouthing Rythmik subs, speaking with such authority of knowledge, sounded jealous or some kind of axe to grind,but everyone has a right to an opinion. Anyway I love these subs they are by far my favorite from many I have owned, and there is a large menu to choose from. Anyone on the thread have side placed Rythmik subs? Any input on this is welcomed .





PeterV
post #10595 of 15160
Quote:
Originally Posted by Skylinestar View Post

I have bought 2 FV15HPs....none of them come bundled with free rubber feet.

You probably got them before we have the feet avaialble. Send me address and I can send two sets to you.
post #10596 of 15160
I will most probably would buy a Lv12R whenever I have enough money. right now only thing stopping me is money. But I have couple of questions. First is as it has a port at back so I won`t be able to have it in front with my LR speakers (nr.2 marked on picture) as I measured that a sub of 19" depth and needing another 5-6" at back would put it too much in front of other components and stand. So then I thought of having it at side of my couch and between couch and loveseat (location marked as nr 1 on picture). There I have plenty of space and can have it there and if it does not vibrate much then use it as a side table too. Do you guys think its a good idea? Let me also post a panoramic picture of my living room to give ya an idea. I know picture is crappy but thats what I have for now.

post #10597 of 15160
Quote:
Originally Posted by BDP24 View Post

John---I paid extra for my XLR2's, but a lot of users, if not most, don't want or need XLR's. Why force them to pay for parts they'll never use? Forty bucks for four XLR jacks is reasonable, no? As for spikes or rubber feet, Parts Express sells a bunch of great ones, for under ten bucks for a set of four. I like that I could pick my own, rather than have Rythmik pick them for me. Just my opinion, of course smile.gif



Yes it is reasonable and I see Rythmik's point, they have to stay competitive. Thanks for the heads up.
post #10598 of 15160
Quote:
Originally Posted by Rythmik View Post

It is easier to transition from a PR sub to ported sub. I'd recommend FV15HP.



I'm surprised you'd recommend a ported sub, but I understand why you did. How will one of these work for the time being in a large room? I'm sure you've heard the Def Tech SC1, so I'm assuming the bass goes much lower and it's tighter than I'm used too.
post #10599 of 15160
Quote:
Originally Posted by xp0z3d View Post

So then I thought of having it at side of my couch and between couch and loveseat (location marked as nr 1 on picture). There I have plenty of space and can have it there and if it does not vibrate much then use it as a side table too. Do you guys think its a good idea?
I do. With a somewhat open floor plan, like you have, nearfield placement can not only give you louder bass but also cleaner bass (you hear more of your sub and less of the room).
post #10600 of 15160
Quote:
Originally Posted by comfynumb View Post

I'm surprised you'd recommend a ported sub, but I understand why you did. How will one of these work for the time being in a large room? I'm sure you've heard the Def Tech SC1, so I'm assuming the bass goes much lower and it's tighter than I'm used too.

Not sure what a 'large room' is without dimensions, but the FV15HP can handle quite a bit of space. The one I heard was pounding away in a room that was probably in the 4000 ft^3 range. Two would have been better of course, but a single unit was certainly holding it's own.
post #10601 of 15160
Quote:
Originally Posted by sdurani View Post

I do. With a somewhat open floor plan, like you have, nearfield placement can not only give you louder bass but also cleaner bass (you hear more of your sub and less of the room).

yeah open floor plan so need sub near to me and was thinking this would be best position to get best bass possible.

Also lemme ask is it possible to stain it in different color or make it look more attractive somehow?
post #10602 of 15160
Quote:
Originally Posted by JimWilson View Post

Not sure what a 'large room' is without dimensions, but the FV15HP can handle quite a bit of space. The one I heard was pounding away in a room that was probably in the 4000 ft^3 range. Two would have been better of course, but a single unit was certainly holding it's own.



My room is about 2,800 cubic ft. But there are hallways at both ends. Combination living room-kitchen-dining area.
post #10603 of 15160
Quote:
Originally Posted by JimWilson View Post

Not sure what a 'large room' is without dimensions, but the FV15HP can handle quite a bit of space. The one I heard was pounding away in a room that was probably in the 4000 ft^3 range. Two would have been better of course, but a single unit was certainly holding it's own.
Quote:
Originally Posted by comfynumb 
My room is about 2,800 cubic ft. But there are hallways at both ends. Combination living room-kitchen-dining area.
I'm running one FV15HP in a 5600 ft^3 room with good results. I'm sure two would be twice as nice but for now I'm perfectly content with one. Mind you, my room is a converted detached garage with no openings to other rooms and I'm sure that probably helps.
post #10604 of 15160
Quote:
Originally Posted by xp0z3d View Post

yeah open floor plan so need sub near to me and was thinking this would be best position to get best bass possible.
Yup, no sense trying to pressurize that entire space when you just want bass at your seating locations. Who cares if it isn't good in the hallways, kitchen or dining area.
post #10605 of 15160

The diagram shows a layout of my living room (not exactly a closed room) where all my HT stuffs are in. It's a family area. It's open to the rest of the house...total about 10,000 cu ft. Which such a big space, it's impossible to pressurize all the air even though there are 2 units of FV15HP.

I'm planning to build a wall (the orange line in the diagram) to close off the area. What will I gain? Better bass? Will I loose anything?

I've also read about articles saying that smaller room has worse acoustic than a bigger room. I don't wanna build a wall and end up with a mistake and live miserably forever. As it also affect WAF, I need to be sure the sound will be better.
post #10606 of 15160
there is very high possibility you will gain much better pressurization after you sealed that area consider you have dual FV15HP, a good example is botbotchai's sealed room......the whole left side is a brick wall? or with windows & doors?
Edited by WereWolf84 - 9/9/13 at 1:23am
post #10607 of 15160
Quote:
Originally Posted by WereWolf84 View Post

there is very high possibility you will gain much better pressurization after you sealed that area consider you have dual FV15HP, a good example is botbotchai's sealed room......the whole left side is a brick wall? or with windows & doors?
As you can see from the diagram, the different colors depict doors and windows.
post #10608 of 15160
then you also need to ensure the 2 doors & 2 windows are properly sealed as well
post #10609 of 15160
Quote:
Originally Posted by Torqdog View Post


I'm running one FV15HP in a 5600 ft^3 room with good results. I'm sure two would be twice as nice but for now I'm perfectly content with one. Mind you, my room is a converted detached garage with no openings to other rooms and I'm sure that probably helps.



5600 cubic ft is a big HT, this must be a really good sub. We are getting our cubic feet with the same formula right LxWxH?
Edited by comfynumb - 9/9/13 at 3:26am
post #10610 of 15160
^^Remember what enough for one person might not be for other. I have seen folks here using two FV15hps in half of that room size. Yes LxWxH= Volume.
post #10611 of 15160
Quote:
Originally Posted by Cowboys View Post

^^Remember what enough for one person might not be for other. I have seen folks here using two FV15hps in half of that room size. Yes LxWxH= Volume.



Hi, I'm going to start out with one and will add a second one next year some time. Thanks.
post #10612 of 15160
Quote:
Originally Posted by comfynumb View Post

5600 cubic ft is a big HT, this must be a really good sub. We are getting our cubic feet with the same formula right LxWxH?

Yup, that's the correct formula.

The assessment is down to expectations I suppose; I wouldn't want to use a single FV15HP in a room larger than 4000 ft^3 or so, but that's just me. I'd rather not push it.
post #10613 of 15160
Quote:
Originally Posted by JimWilson View Post

Yup, that's the correct formula.

The assessment is down to expectations I suppose; I wouldn't want to use a single FV15HP in a room larger than 4000 ft^3 or so, but that's just me. I'd rather not push it.



Mines 2,800 CF but open at both ends, one will have to due for now.
post #10614 of 15160
^^
Adding a second one always a great idea. I am very happy with one in my ~2700 ft^3 enclosed room. More than I can handle. I dont know how folks here have eight or sixteen 18 inchers- I certaintly dont want to go deaf:)
post #10615 of 15160
I recommend a measurement mic + REW, then you know exactly what's going on smile.gif I find having some room openings lead to better sound quality in my case (but with the window closed).

Too bad the sub is so heavy it's hard to move it around... Brian should investigate plastic enclosures, like those Genelec subs.
post #10616 of 15160
^^^
I hear what your saying. I can see maybe 4 subs in a large room, but I think there is a point where the sound starts to suffer from the bass over powering the other speakers. There is really no way that your front 3 speakers are going to keep up with 8 or 16 15" or 18" subs IMO. Right now my Revel fronts are over powering my Def Tech SC1 sub, which is too be expected I have about 300 WPC going into each of them and around 200 going into my center and surrounds. I'm not hurting for power just bass biggrin.gif
Edited by comfynumb - 9/9/13 at 10:37am
post #10617 of 15160
Quote:
Originally Posted by comfynumb View Post

^^^
I hear what your saying. I can see maybe 4 subs in a large room, but I think there is a point where the sound starts to suffer from the bass over powering the other speakers. There is really no way that your front 3 speakers are going to keep up with 8 or 16 15" or 18" subs IMO. Right now my Revel fronts are over powering my Def Tech SC1 sub, which is too be expected I have about 300 WPC going into each of them and around 200 going into my center and surrounds. I'm not hurting for power just bass biggrin.gif

I've been wondering lately if the guys with all the 18" driver subs aren't in it just for cheap thrills. "Wow, wouldya listen to that bass!" is not what you say when you hear a great loudspeaker. It reminds me of automobile sound system SPL competitions with teen-age boys. And a lot of the speakers those subs are partnered with aren't exactly world class music reproducers. Where are the Magneplanars? Electrostatics? Ribbons? Speakers that let the listener inside the music, transparent enough to reveal the subtleties of music. And a sub that can keep up with the speakers, becoming one with them (Rythmik, anyone?), not a separate entity, drawing attention to itself (until the music requires it to do what you know the main speakers cannot). For soundtracks just about any speaker will do, IMO. But then, I'm not a HT guy. The guys with those monster subs are, as are a lot of Rythmik users, at least partially. Nothing wrong with that---I'm no two-channel purist snob. You have to have speakers and subs for HT too, and it does add to the movie experience. But for me, at least, it's all about music. If I'm not mistaken, the makers of "high-output trumps all" subs come from the Pro-Sound industry, not Hi-Fi. I remember being 17, and thinking how great it would be to have a pair of Altec A-7's in my bedroom. Do you really want a hi-fi that sounds like a PA? Then I discovered the secret world of real hi-fi stores, independantly owned and operated by hardcore audiophiles, where I heard my first ESL tweeter (RTR---you never forget your first one), with a KEF 5" midrange driver and B139 woofer, both in transmission lines. What an eye (and ear) opener. No more Altecs for me, thank you. In the same spirit, I feel no need for an 18---I'm a little embarrassed for getting Rythmik 15's instead of 12's. What a wus!
Edited by BDP24 - 9/9/13 at 1:14pm
post #10618 of 15160
To Rythmik people , do you ever have a sale? So I can see light at end of tunnel of patience. Or anytime soon when you will have Lv12R as Bstock?
post #10619 of 15160
Quote:
Originally Posted by comfynumb View Post

^^^
I hear what your saying. I can see maybe 4 subs in a large room, but I think there is a point where the sound starts to suffer from the bass over powering the other speakers. There is really no way that your front 3 speakers are going to keep up with 8 or 16 15" or 18" subs IMO. Right now my Revel fronts are over powering my Def Tech SC1 sub, which is too be expected I have about 300 WPC going into each of them and around 200 going into my center and surrounds. I'm not hurting for power just bass biggrin.gif

Quote:
Originally Posted by BDP24 View Post

I've been wondering lately if the guys with all the 18" driver subs aren't in it just for cheap thrills. "Wow, wouldya listen to that bass!" is not what you say when you hear a great loudspeaker system. It reminds me of automobile sound system SPL competitions with teen-age boys. And a lot of the speakers those subs are partnered with aren't exactly world class music reproducers. Magneplanars? Electrostatics? Ribbons? Speakers that let the listener inside the music, transparent enough to reveal the subtleties of music. And a sub that can keep up with the speakers, becoming one with them (Rythmik, anyone?), not a separate entity, drawing attention to itself (until the music requires it to do what you know the main speakers cannot). For soundtracks just about any speaker will do, IMO. But then, I'm not a HT guy. The guys with those monster subs are, as are a lot of Rythmik users, at least partially. Nothing wrong with that---I'm no two-channel purist snob. You have to have speakers and subs for HT too, and it does add to the movie experience. But for me, at least, it's all about the music. And if I'm not mistaken, the makers of "high-output trumps all" subs come from the Pro-Sound industry, not Hi-Fi. I remember being 17, and thinking how great it would be to have a pair of Altec A-7's in my bedroom. Do you really want a hi-fi (uh oh, I'm revealing my age) that sounds like a PA? Then I discovered the secret world of real hi-fi stores, independantly owned and operated by hardcore audiophiles, and heard my first ESL tweeter (RTR---you never forget your first one), with a KEF 5" midrange driver and B139 woofer, both in transmission lines. What an eye (and ear) opener. No more Altecs for me, thank you!

Almost all of the guys with multiple 18" subs are using them for HT and are aiming for lower not louder (or at least not louder than reference level). Assuming everything is calibrated, adding more subs doesn't mean louder bass, it means that the subs are capable of reproducing lower tones before overloading. That being said, many (myself included with just a single D15) do bump up the LFE channel 3-6db or more. Blockbuster movies like Cloverfield and War of the Worlds contain effects that go down to single-digit Hz. Reproducing those effects at reference levels requires a ton of displacement. Playing music on one of these systems should sound just as good (balance wise) as a dedicated music system... just with an insane amount of headroom.
post #10620 of 15160
Quote:
Originally Posted by milkfat View Post


Almost all of the guys with multiple 18" subs are using them for HT and are aiming for lower not louder (or at least not louder than reference level). Assuming everything is calibrated, adding more subs doesn't mean louder bass, it means that the subs are capable of reproducing lower tones before overloading. That being said, many (myself included with just a single D15) do bump up the LFE channel 3-6db or more. Blockbuster movies like Cloverfield and War of the Worlds contain effects that go down to single-digit Hz. Reproducing those effects at reference levels requires a ton of displacement. Playing music on one of these systems should sound just as good (balance wise) as a dedicated music system... just with an insane amount of headroom.



Hi, I understand what your saying but 8 or 12 subs set at 75Db's has to be louder than 2 subs set at 75Db's. I would have to hear one and I'm sure they are amazing for HT but I'm not convinced it sounds balanced for music.
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