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Official Rythmik Audio Subwoofer thread - Page 149

post #4441 of 9709
9/22/11 at 1:07pm
Quote:
Originally Posted by mjodotcom View Post

Another interesting thing to consider for sure. I guess since the location I found only has a peak to peak variance of about 10db, that should all be within the realm of correct-ability with Audyssey, right?

It depends if you are only interested in correcting for a small listening sweet spot (two seats next to each other) or are you attempting to obtain an acceptable response over a much larger listening area. If you are only concern with those two seated positions you plotted for (my guess is they are fairly closely located to each other.. perhaps within three feet of and possibly side-by-side) then Audyssey should do a fine job of coming up with a compromise that will be quite good. However if you intend to use Audyssey to find a compromise for a much larger area then you would need to map all those listening locations to be sure you indeed have selected the best sub position... this is where you will definitely find REW a blessing. I think the time savings alone from 'mapping' out 8 listening positions X say 4 different sub positions "by hand" using single Hz test tones from 10-120Hz might make it worth spending the effort and time needed to learn how to use REW. I'm guessing producing 32 separate SPLxfreq maps using your current methodology would consume many hours of tedious measureing and hand plotting the single Hz test tones, whereas REW could plot each set of 8 listening positions in about a minute for each of the sub positions. PLUS you can manipulate the graphs in so many ways it would take me too long to list... but Don has already given you the best part... the fine resolution detail of the freq response and of course the info on time domain freq response, which will also allow you to assess and 'tune' your room. It really is worth the effort to download the software and tutorial and learn how to use it.
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post #4442 of 9709
9/22/11 at 3:17pm
Quote:
Originally Posted by monomer View Post

It depends if you are only interested in correcting for a small listening sweet spot (two seats next to each other) or are you attempting to obtain an acceptable response over a much larger listening area. If you are only concern with those two seated positions you plotted for (my guess is they are fairly closely located to each other.. perhaps within three feet of and possibly side-by-side) then Audyssey should do a fine job of coming up with a compromise that will be quite good. However if you intend to use Audyssey to find a compromise for a much larger area then you would need to map all those listening locations to be sure you indeed have selected the best sub position... this is where you will definitely find REW a blessing. I think the time savings alone from 'mapping' out 8 listening positions X say 4 different sub positions "by hand" using single Hz test tones from 10-120Hz might make it worth spending the effort and time needed to learn how to use REW. I'm guessing producing 32 separate SPLxfreq maps using your current methodology would consume many hours of tedious measureing and hand plotting the single Hz test tones, whereas REW could plot each set of 8 listening positions in about a minute for each of the sub positions. PLUS you can manipulate the graphs in so many ways it would take me too long to list... but Don has already given you the best part... the fine resolution detail of the freq response and of course the info on time domain freq response, which will also allow you to assess and 'tune' your room. It really is worth the effort to download the software and tutorial and learn how to use it.

Sounds good, and thanks for the details response. Ill definitely have to check REW out - but at least I know now where the best single sub spot is for my primary two listening positions, which is all that really matters for the short term and is probably the best I'm going to do with a single sub setup. Maybe I'll play with more spots if/when I get a second sub
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post #4443 of 9709
9/22/11 at 3:21pm
So do I really need to set the extension to 14 / high when running Audyssey? Seems silly to have it set to something that I will not be using in practice.
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post #4444 of 9709
9/22/11 at 3:39pm
Put an order in for an FV15 yesterday. Enrico wrote back:

We are ran out of amplifiers. Them will be available in 6 weeks.

Best Regards,

Enrico Castagnetti
Rythmik Audio - Tech Support
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post #4445 of 9709
9/22/11 at 4:05pm
Quote:
Originally Posted by TBowers View Post

Put an order in for an FV15 yesterday. Enrico wrote back:

We are ran out of amplifiers. Them will be available in 6 weeks.

Best Regards,

Enrico Castagnetti
Rythmik Audio - Tech Support

F25, and now the FV15 back ordered, man I was going to get a pair
soon, now it looks like I wont be able to get one as soon as I hoped too

Did you try the FV15HP?
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post #4446 of 9709
9/22/11 at 8:24pm
Would it be possible to get an F15 with a DS1505 driver? Would there be any sound quality advantage / disadvantage with this configuration?

Also, earlier in this thread, Brian discussed having plans for a sub with a class D amplifier and a dual-driver sub in a push-pull configuration. If you're still working on these projects, could you give some sort of rough time-frame in which we can expect to see them?
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post #4447 of 9709
9/23/11 at 9:14am
Quote:
Originally Posted by cschang View Post

The F25 is sealed.

For Rythmik, if the model contains a "V", then it is vented, if not, then sealed.

Oh .....ok
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post #4448 of 9709
9/23/11 at 9:16am
The F15s extend down to 14hz.....what do the F25s extend down to?
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post #4449 of 9709
9/23/11 at 9:27am
We ran out in ALL amplifiers till end of October, sorry...
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post #4450 of 9709
9/23/11 at 10:22am
Quote:
Originally Posted by mjodotcom View Post

Another interesting thing to consider for sure. I guess since the location I found only has a peak to peak variance of about 10db, that should all be within the realm of correct-ability with Audyssey, right?

It depends, a broad correction of 12dB SPL needs 6dB of power which can be a lot at reference levels and Audyssey is fairly conservative regarding the load it will put on your amps. Audyssey also treats sub EQ differently from the rest of spectrum. If you post a detailed question to the Audyssey thread you may get a good answer. Otherwise there's always Ask Audyssey at audyssey.com.
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post #4451 of 9709
9/23/11 at 11:41am
Hello KLEE-all Rythmik sealed subwoofer models, regardless of driver size, or amplifier output, have the same low frequency extension: -2db at 14hz. The low frequency extension is the same from F12 through all servo controlled models, including the presentlly largest model, F25.
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post #4452 of 9709
9/23/11 at 12:09pm
Quote:
Originally Posted by castaño View Post

We ran out in ALL amplifiers till end of October, sorry...

What subs are currently on hand and available for sale?
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post #4453 of 9709
9/23/11 at 2:59pm
Well, just submitted an order to Ascend for an F15 but added a note that I'll take either the F12 or F15 depending on which is available first. Can't frickin' wait!
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post #4454 of 9709
9/23/11 at 9:56pm
Hey all, wanted to share my post Audyssey plots. It looks like the response did get better past 30hz, however, I was a bit disappointed that from 20-30hz the graphs are almost identical. Does XT32 not go down that far? I also expected the FR to be a little more flat than I ended up getting, unless what is shown is just pretty much par for the course and acceptable enough? Maybe I'll try out using PEQ to bring up that null around 23hz or the one at 44hz (its weird to me why that one is still there considering 45-50 were low in the room and corrected?). Any other suggestions/comments?
LL
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post #4455 of 9709
9/24/11 at 7:15pm
The 22 and 44 Hz'ish nuls are likely room modes you may not be able to correct. Except for those nulls, you are within about +/-3 dB, and that's pretty durn good.
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post #4456 of 9709
9/25/11 at 1:04am
I've had this problem with my receiver/sub. http://www.avsforum.com/avs-vb/showthread.php?t=1362154.

I sort of fixed it, but not completely but lately after EQ'ing it with antimode and running MCACC the sub output in movies seems really weak. My girlfriends dad has some really weak 10" cheapy sub calibrated with Audyssey and even a standard DVD Harry potter makes mine seem weak on Transformers 2 BD so has me just a bit concerned. I've had the limiter on the whole time but is there a chance it's damaged now? Thanks
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post #4457 of 9709
9/25/11 at 4:09am
Anyone else getting a screen saying the rythmik site is hacked?
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post #4458 of 9709
9/25/11 at 4:53am
Quote:
Originally Posted by brian6751 View Post

Anyone else getting a screen saying the rythmik site is hacked?

OMFG, what happened? My browser window started dancing around
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post #4459 of 9709
9/25/11 at 4:53am
Quote:
Originally Posted by brian6751 View Post

Anyone else getting a screen saying the rythmik site is hacked?

Yup. Looks as if Brian has his work cut out for him.
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post #4460 of 9709
9/25/11 at 6:02am
Quote:
Originally Posted by z0rn0rch View Post

Would it be possible to get an F15 with a DS1505 driver? Would there be any sound quality advantage / disadvantage with this configuration?

Also, earlier in this thread, Brian discussed having plans for a sub with a class D amplifier and a dual-driver sub in a push-pull configuration. If you're still working on these projects, could you give some sort of rough time-frame in which we can expect to see them?

We currently use DS1505 for FV15 regular power version to take advantage of the mechanical excursion of the driver. If you like to order one with DS1505, that certainly can be arranged. The sound advantage is not that obvious because all DS1501/DS1505/DS1510 are all optimized for sound quality already (such as multiple shorting rings, highly compliant driver/low memory effect,.. etc).

Class D is definitely in the work. I may have that arranged by end of this year or early next year. The first model is H800 (which is literally 400WRMSx2). The class D modules are from a very well known company. All class D amp based amps will have XLR2 preamp configuration.
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post #4461 of 9709
9/25/11 at 6:05am
Quote:
Originally Posted by sat968 View Post

Yup. Looks as if Brian has his work cut out for him.

Thanks everyone to alert me. I am in contact with hosting company to resolve the issue. The hacker apparently just wanted to make a statement and change the index.php file so the animation home page is redirected to his page. Still it is something I need to be careful about.
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post #4462 of 9709
9/25/11 at 6:39am
Quote:
Originally Posted by Rythmik View Post

We currently use DS1505 for FV15 regular power version to take advantage of the mechanical excursion of the driver. If you like to order one with DS1505, that certainly can be arranged. The sound advantage is not that obvious because all DS1501/DS1505/DS1510 are all optimized for sound quality already (such as multiple shorting rings, highly compliant driver/low memory effect,.. etc).

Class D is definitely in the work. I may have that arranged by end of this year or early next year. The first model is H800 (which is literally 400WRMSx2). The class D modules are from a very well known company. All class D amp based amps will have XLR2 preamp configuration.

Nice, finally the xlr option won't be so hard to get
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post #4463 of 9709
9/25/11 at 8:11pm
Thought I would post an update. I used my E15 PEQ amp functionality to boost the output around the 43ish hz area that I had a little null before. Attached is my latest FR graph - I must say that beyond the dip at around 23hz everything looks pretty darn flat! It is odd that XT32 itself wasn't able to correct out the 43hz null completely, but maybe the PEQ + XT32 combo is what was needed?

Looks like there is still a little boosting going on between 60-80hz, not sure what to make of that since there were no nulls there before. Maybe its partly due to the "compromising" Audyssey has to make to smooth out the FR across all the calibration points it takes for input (and I did not check my sub response afterwards at each one - too much work =p). Needless to say, I am pretty happy with my +/-2db curve =)
LL
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post #4464 of 9709
9/25/11 at 8:41pm
So if I wanted to further "tighten up" the bass response from my E15, would I want to go with the low damping such that the sub settles to its final position faster or does it not work that way with this system and high is what I should change to?
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post #4465 of 9709
9/26/11 at 9:44am
OK - I'm about ready to purchase a setup for my 24x22x18 room (yes 9500+ cu foot) and I'm in need of some serious power. I'm looking hard at the Epik Empire (dual), Hsu VTF-15H (dual) , JTR Cap, and now the FV15 (dual) or F25 (possibly dual). I understand that the F25 will not be available for some time, but is there any indication as to it's output? Before I plop down 2500+ for a pair of these bad boys, it would be nice to have some reviews, etc.
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post #4466 of 9709
9/26/11 at 10:13am
Quote:
Originally Posted by mjodotcom View Post

So if I wanted to further "tighten up" the bass response from my E15, would I want to go with the low damping such that the sub settles to its final position faster or does it not work that way with this system and high is what I should change to?

High damping controls the over-shoot more effectively (IOWs will settle quicker after any upsets).

Remember Audyssey is looking for a compromise that will work best for all seated locations (ie mic'd positions) and is also working in the time domain as well... this last thing is something you cannot measure using your current methods. You really need to learn REW.
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post #4467 of 9709
9/26/11 at 12:45pm
Quote:
Originally Posted by Gorilla83 View Post

OK - I'm about ready to purchase a setup for my 24x22x18 room (yes 9500+ cu foot) and I'm in need of some serious power. I'm looking hard at the Epik Empire (dual), Hsu VTF-15H (dual) , JTR Cap, and now the FV15 (dual) or F25 (possibly dual). I understand that the F25 will not be available for some time, but is there any indication as to it's output? Before I plop down 2500+ for a pair of these bad boys, it would be nice to have some reviews, etc.

Taken off there site~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~

Output comparison

At 20 Hz, our subs vary in their maximum output capability. The output at 20 Hz is shown relative to F12.

F12: 0db (baseline)
F15: +2db D15: +2db
FV12: +3db
E15HP: + 3.5db
F15HP: +4db
FV15: +7db
FV15HP: +9db
F25: +7db

http://www.rythmikaudio.com/products1.html

I want a pair of F25's as well, may have to settle for FV15HP, or pair of Empires, or a pair of HSU VTF-15H's. But I waited this long, I can go 5-7weeks more I guess.
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post #4468 of 9709
9/26/11 at 12:48pm
Thanks for the info. Unfortunately, that comparison is only at 20hz. Being that the F25 is a sealed design, it's strongpoints are probably higher up in the range and I'd expect it to outshine the FV15 in that area. Also, aren't they increasing the 25 to 800 watts as well?

I'm in the same boat, no problem waiting just hope it's worth the wait.

Cheers.
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post #4469 of 9709
9/26/11 at 2:11pm
I have also been waiting for the F25 for nearly 8 months already! Brian, please give us a preview of the 800 watt version of the f25, would that be your flagship, what kind of performance can we expect?
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post #4470 of 9709
9/26/11 at 3:10pm
Quote:
Originally Posted by monomer View Post

High damping controls the over-shoot more effectively (IOWs will settle quicker after any upsets).

Remember Audyssey is looking for a compromise that will work best for all seated locations (ie mic'd positions) and is also working in the time domain as well... this last thing is something you cannot measure using your current methods. You really need to learn REW.

So I assume then the "higher damping" setting does not go beyond the point of the system being critically damped? Otherwise, unwound expect the settling time to be longer. So is this nob what you would adjust to take away some of the "boomyness"?

With regard to Audyssey, are you saying that the time delay stuff can also effect the SPL which is why my latest plots might show some boost in the 60-80 hz range, or is that more of a comment that changing damping means needing to re-cal?
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