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Official Rythmik Audio Subwoofer thread - Page 244

post #7291 of 15247
Quote:
Originally Posted by sydneyaudio View Post

Hi guys, i have a (confusing) question regarding my F15HP.
If I have my AVR connected via LFE in, and a preamp connected via Line in - which controls the sub if both are on and active?
Is there any risk to the sub amp if there is an active input on both the LFE in and the Line in?.
For watching movies I have the FL and FR channels going via HT bypass on the preamp, with the AVR connected directly to the sub LFE in.
When listening to music one of the the preamp outs is connected to the sub line in - so the sub is active for music (I have a separate high pass control on my active speakers and use the low pass on the sub).
Unfortunately, even in HT bypass mode, both preouts on the preamp are active. Hence, when watching movies, the AVR would be sending a signal via LFE in, and the preamp a signal via line in.
Thanks in advance

There are two options in terms of how to set up in HT. The 2ch mode is same (front speakers full range, sub is used to supplement the bottom, and therefore, customers will use 50hz/24 setting to dial in the 2ch mode):

First option is to run the front speakers full range in HT. In this case, the FR/FL have the full range signal, just like the 2ch mode. LFE signal will go out from SUB channel of AVR.

Second option is to set the front speakers to small, and set tthe crossover point as high as possible (90hz) and set the SUB channel 3db hotter (actually in HT mode, most people do enjoy 3db to 6db hotter sub channel). With clean sounding subs, it can sound better that way. By doing this, we limit the the signals going to FR/FL which then goes through the line-in inputs leak into the subwoofers.

BTW, via PM I know you have a separate highpass control on your active speakers. In this case, your natural choice will be optoin 1.
Edited by Rythmik - 11/8/12 at 8:07am
post #7292 of 15247
Quote:
Originally Posted by jonathanc View Post

He's complained about tinitis (constant ringing) in his ears.

I am working hard to keep that from happening to me. Something like that does happen, in particular, when one gets older.
post #7293 of 15247
Well, I believe this is a record for me.

I started looking at subs a couple days ago and decided to just go with my gut.

Just placed an order for Dual FV15HPs
post #7294 of 15247
^^
Congrat! You will love them. What are you going to do with your dual CHT 18? Running Quad set up?
post #7295 of 15247
Quote:
Originally Posted by Cowboys View Post

^^
Congrat! You will love them. What are you going to do with your dual CHT 18? Running Quad set up?

I actually sold them to a friend locally who already has 2 CHT 18s. I was looking at going with the VS subs, but with the recent announcement of CHT closing I felt my business would be better appreciated elsewhere.
post #7296 of 15247
Good choice. Please tell us your impression as compare to your CHT once you get them.
post #7297 of 15247
I will, I also recently acquired an OmniMic so I can provide my feelings and factual data on how the two systems compare.
post #7298 of 15247
Quote:
Originally Posted by qguy View Post

In a 2 channel environment, Any advantage from running stereo subs ?
Sure, depending on what you want. One approach would be to use each sub to reproduce the bottom end of each channel, turning your bookshelf speakers into full range towers. If you want to do that, then you would be better off placing each sub directly to your sides, since that will make it easier to hear stereo bass (in the very few recordings that actually have decorrelated low frequencies).

Another approach would be to feed the same signal to both subs and spread them where they give the smoothest bass in your room. It will have to be determined through trial and error (measure, move, measure, move), and could result in asymmetrical placement depending on the size and shape of your room.

Either way, I wouldn't use the subs as speaker stands, since that assumes that the locations that give best soundstage and imaging for your bookshelf speakers are also the same locations that give best low frequency response from your subwoofers. It really helps to have the flexibility to move your subwoofers around the room in order to get the results you want.
post #7299 of 15247
Quote:
Originally Posted by Rythmik View Post

I am working hard to keep that from happening to me. Something like that does happen, in particular, when one gets older.

Over thirty years ago I realized I had mild tinnitus, a result of fifteen years of playing in bands and attending hundreds of live shows (the loudest sound I've ever heard remains the audience at The Beatles concert at San Fransisco's Cow Palace in '65). I went to an Audiologist, who made molds of my ear canals, and got SPL attenuators (little discs that attach to the molds, in values of 5dB, 10dB, 15dB, and more).Tinnitus is irreversable, so it's still with me, but at least it's not any worse. Don't delay---get yourself some!
post #7300 of 15247
Quote:
Originally Posted by BDP24 View Post

Over thirty years ago I realized I had mild tinnitus, a result of fifteen years of playing in bands and attending hundreds of live shows (the loudest sound I've ever heard remains the audience at The Beatles concert at San Fransisco's Cow Palace in '65). I went to an Audiologist, who made molds of my ear canals, and got SPL attenuators (little discs that attach to the molds, in values of 5dB, 10dB, 15dB, and more).Tinnitus is irreversable, so it's still with me, but at least it's not any worse. Don't delay---get yourself some!

The level of tinnitus I have is only apparent when I go to sleep (everything is absolutely quiet). It also comes and goes. For some weeks I hear absolutely no ringing. The ringing comes back after I watched the Avengers movie.
Edited by Rythmik - 11/9/12 at 8:11am
post #7301 of 15247
O.K. so i bit the bullet yesterday ! I ordered a F15HpSE, from all the good reports on this forum. Now the waiting starts. I was undecided about ordering the Salk/Rythmik sub to match my Songtowers F/L/C with the Raal Tweeters but the sheer weight of the Salk version (i believe about 155lbs turned me off).The Salk cabinet size is slightly larger than the AV123 MFW-15 it will be replacing. Can't wait to hear the Rytmik. The rest of my system is Monitor Audio RS6 for rears, Denon 4311, Oppo BDP-95, Parasound 2100 ( Tried the new Emotiva XSP-1 preamp no noticeable improvement in my system, maybe if i had a turntable) Emo-XPa-5, Antimode 8033. My rm is app 3800 Sf with an opening to another 1500 sf. I don't listen to movies extremely loud -18 to -20. Music depending on concerts with Denon varies with Blu-RAy or DVD content max -12 to -15. I also contemplated FV15HP but wanted to try sealed Sub. Waiting and hoping for the best. Thanks for all the comments and reviews on this site that made me want to spend more money again.( Just kidding) Thank you to Brian also for answering my questions . I am new to all this Subwoofers info and i have a lot to learn.

Rich
post #7302 of 15247
Hello Reflections1 and Rythmic owners.smile.gif

Was wondering if you [or anyone] had an oppurtunity to compare tha Salk/Rythmik sealed 12", with a Rythmic sealed 12" ? I'm looking at both and any feedback would be appreaciated from any and all.If there is a separate thread, please advise.

Thank-you

Mark
post #7303 of 15247
I believe there are comments in the Salk thread in the Speakers Forum. IIRC, the Salk version has a beefier cabinet with much more bracing but is otherwise the same. No idea if/how much the difference is audible. Why not ask Jim (Salk)?
post #7304 of 15247
Mark i talked to Jim , i trust his judgement that it is better with the beefier cabinet ,but i just didn't want that heavy of a subwoofer for the 15 inch. His cabinet making and speakers to me are absolutely fabulous and i would have loved to have a sub match my fronts and center. I also could not find any reviews between the two. Good luck in your search.


Rich
post #7305 of 15247
I spoke with Brian and it seems I should have my Dual FV15HP's by Thursday. Will be a perfect way to spend the weekend. biggrin.gif
post #7306 of 15247
Any pricing and release date info on these ?
Quote:
Originally Posted by Rythmik View Post

Here is the photo of the prototype. The white dot on the dust cap is for me to observe the excursion. The amp is 300Wx2 dual power amp module amp. It will first appear as a kit to encourage customers mating them with high end full range (above 200hz) niche market transducers. Here is photo

Here is the frequency response.

FR is very similar to all of our other sealed subs and that is no coincidence. We use our unique transfer function cloning technique here. The output is just a bit less than one DS1200. But it extends to 200hz. If one wants to stretch a bit, it can crossover at 250hz. We expect the customers to use a pair. The future project may be a plate that can host quad amp modules.
As for how it sounds, I use them to test the poem of chinese drums and Blue man group. I like the sound very much.
post #7307 of 15247
Brian,

I'm getting ready to setup my second F15HP clone this weekend. I've read your post (quoted below) regarding how to set the phase of multiple subs. My question is do I reference the shorter vs. farther sub from the middle seat in the front row or from the center of the room? Since my seating is offset to one side of the room, the answer is different depending upon which you choose.

Slide1.jpg
Quote:
Originally Posted by Rythmik View Post

How to set up multiple subs?
One cool feature of phase/delay control on the plate amp is it allows you to compensate the phase difference arised fromt difference in physical distance. To use this feature, one needs to use line in, instead of LFE in. The purpose is to make sure that direct sound multiple subs arrive at the listening seat at the same time so there is no cancellation in sound. To do that, use the farthest sub as the reference. Then measure the physical distance difference in ft. Note the sound speed is about 1 ft per milli-second. As an example, say the difference is 5ft, then set the phase/dealy knob on the closer sub at 5ms. Then one can use roomEQ program to calibrate both subs at the same time.
post #7308 of 15247
Thanks for the replys Don and Rich.

I do plan on talking to Jim about the differences of both units but I wanted to get a better understanding, if possible, with the forum members first. I feel the end paying customer would give a more detailed report,considering moneys spent. I'll take a look at the link.

Regards,
Mark
Edited by markrdee - 11/10/12 at 6:23am
post #7309 of 15247
Sorry I can't help, not having heard the Salk. If I had Salk speakers, I'd probably get the Salk just to match. The vanilla Rythmik version is pretty well built, and IME extra bracing might help but there are diminishing returns. I suspect I would not hear any difference. YMMV.
post #7310 of 15247
I've tried searching this thread but the search function is useless so please excuse my question because I know it has been asked many times BUT,
Is there any ETA on the new amps with XLR inputs?
I believe they are the HX600 and HX800?
Right now, i'm looking just for the amps but plan on getting drivers and amps in the future.
Thanks
post #7311 of 15247
Well, a big black gorilla (FV-15HP) entered my living room late Thursday, and his name is Rythmik and he is pissed! I don't know what you do with two of these bad boys.....rattle your neighbor's pictures maybe? Still working on system and room integration.

David_R........ thought about it and wanted to tell you I think Brian is really the best person for an F15 vs FV15 comparison. My bass memory from three/four months ago is pretty poor, and my hearing is not the best. Not to mention all that has transpired on my end in the last 2.5 months. Who better than the designer and manufacturer? Who has a better sense of sonic accuracy than the product originator?

I'm still rather partial to my old F-15, sealed subs. Maybe the new re-designed, higher power F-25 is the absolute solution. Need to give the FV-15 more time on my ears.
post #7312 of 15247
Can we get some pics, I always like seeing new angles of the subs, especially when its a model I am waiting for..... smile.gif
post #7313 of 15247
Quote:
Originally Posted by kaotikr1 View Post

Can we get some pics, I always like seeing new angles of the subs, especially when its a model I am waiting for..... smile.gif

Ask and you shall receive smile.gif Me being a photo enthusiast too.




The dresser to the left stood in 13" of saltwater for 24 hours 8/29/12. (why the bottom drawer is missing)

hyperlink to image where you can supersize it: http://www.moviephotoforums.com/photopost/showphoto.php?photo=28826
follow link them double click on image.
Man, that Rythmik aluminum driver cone is bad a$$!
post #7314 of 15247
I got to be careful here, they might give me another 3 day suspension for posting porn............naked speaker cones biggrin.gif
post #7315 of 15247
^^^ John,

To get the closest to sealed sub sound (F15) , please try one port, rumble fitler OFF/1, and 14hz high damping setting.
post #7316 of 15247
Will do Brian smile.gif
post #7317 of 15247
Thanks for the pics, that is a damn sexy cone on that sub.
post #7318 of 15247
Quote:
Originally Posted by Chupalt View Post

Brian,
I'm getting ready to setup my second F15HP clone this weekend. I've read your post (quoted below) regarding how to set the phase of multiple subs. My question is do I reference the shorter vs. farther sub from the middle seat in the front row or from the center of the room? Since my seating is offset to one side of the room, the answer is different depending upon which you choose.

I will use the middle seat (as a rule of symmetry) and then the roomEQ can optimize among all 3 seating positions.
post #7319 of 15247
Quote:
Originally Posted by kaotikr1 View Post

Thanks for the pics, that is a damn sexy cone on that sub.
You're welcome sir.

Ok ,as the good doctor ordered, and as he shipped the beast. One earplug in the gorilla's left nostril......to calm the beast just a touch, command him to walk a tighter line (14hz, high dampening).



One of the greatist musicians of all times imo, live at the Royal Festival Hall, circa 2002.




Ok, I won't bore you guys any further with images smile.gif

And I forgot...the music sounds FANTASTIC.
Edited by polizzio - 11/12/12 at 3:47am
post #7320 of 15247
Anyone here has a 550W version of FV15HP? Can post picture of the amp plate?

Without looking at the internal circuitry components of the amp, how do one differentiate the 550W amp plate from the 600W amp plate?
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