Official Rythmik Audio Subwoofer thread - Page 1018 - AVS Forum | Home Theater Discussions And Reviews
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post #30511 of 30527 Old 08-18-2017, 02:26 PM
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here is some rythmik rew porn. dropped my mic to ten in control panel instead of 100 and ran some sweeps at -12.5, -7.5, -2.5, and 0 MV

attached one no smooth and 1 smooth 1/6. only way I think I could get them to play louder would be to increase gains on sub or go past 0mv or increase bass trims in avr...but I have all that set for a reason lol.

anyways pretty good and no funny sounds.

did I mention I like rythmik subs?
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File Type: jpg compression.jpg (94.2 KB, 731 views)
File Type: jpg compression smooth.jpg (81.9 KB, 499 views)

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30512 of 30527 Old 08-18-2017, 02:34 PM
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Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30513 of 30527 Old 08-18-2017, 03:12 PM
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^^^

Lookin' good, Torii!

However, in order to see if you are compressing or not, you should raise the level by the same amount for each sweep, I use +3dB. Curious that you mentioned only 4 sweep levels, but you have 5 traces in the graph(?). Also, you said that the first 3 sweeps were +5dB each...the graph does not reflect that. You should label the sweeps to make it easier to read the graph.

Keep going until you see compression, OR start hearing any funny noises. You should be able to top 115dB without issue.
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post #30514 of 30527 Old 08-18-2017, 03:20 PM
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yea, i started with channel 3 but then after some runs decided to unplug speaker cables on cc as it was getting loud. than I couldnt get any louder and started messing around with -18db adjustment in rew dropping it by 6 down to -3db.

I will have to try again and take the volume limiter off my avr at 0mv

also a school bus drove by my home on a few of my runs(open front window) so may have had some audible outside noise get into my readings.

I was hoping I could get over 120 db, but not at the settings I have set up now. but also no bad sounds, so that means I still have some room to go

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30515 of 30527 Old 08-18-2017, 03:23 PM
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I will label stuff clearly next time, its confusing to even me. sry

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30516 of 30527 Old 08-18-2017, 04:23 PM
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^^ Also try your sweeps on channel 4 instead and up your lfe on your receiver to 250hz.
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post #30517 of 30527 Old 08-18-2017, 04:36 PM
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I do the sweep with Channel 1.3 but run only from 10 to 250 Hz.

I start with RMS Level dBFS @ -20.0 and MV @ -15. Towards the limit, the RMS Level dBFS would be @ -3.0 and the MV would be +5 or so...

My new spot:


My old spot:
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Last edited by chucky7; 08-18-2017 at 04:40 PM.
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post #30518 of 30527 Old 08-18-2017, 04:53 PM
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I wonder if audyssey or something else in rew holding back my volumes...like maybe everything set to be calibrated at 115 max spl or something and if I should turn audyssey off when doing sweeps for this purpose...I was just trying to find a safe way to see what the limit of my space/equipment was with rew.. I know its louder than what I showed, just dont know how to show it with rew.

but just for fun, I cant play stuff over 120 db for more than a song or 2 anyways...and dont want to mess around too much with settings cause I have it sounding good right now at modest to loud levels.

plus my huge space its hard to get loud thats why im so impressed with fv25hp. no idea on how it compares with 18 inch subs, but it works awesome with my 15hp imo.

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30519 of 30527 Old 08-19-2017, 07:02 AM
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Quote:
Originally Posted by torii View Post
I wonder if audyssey or something else in rew holding back my volumes...like maybe everything set to be calibrated at 115 max spl or something and if I should turn audyssey off when doing sweeps for this purpose...I was just trying to find a safe way to see what the limit of my space/equipment was with rew.. I know its louder than what I showed, just dont know how to show it with rew.

but just for fun, I cant play stuff over 120 db for more than a song or 2 anyways...and dont want to mess around too much with settings cause I have it sounding good right now at modest to loud levels.

plus my huge space its hard to get loud thats why im so impressed with fv25hp. no idea on how it compares with 18 inch subs, but it works awesome with my 15hp imo.
Hi,

You never know with room EQ. Audyssey might be trying to fill-in some dips, which would limit potential headroom, just as it is pulling down some peaks, although that might not increase headroom by very much. If you are just curious to try it, it can't do any harm to turn Audyssey off for purposes of running some sweeps. When you turn it back on again, you will still have the full benefit of the calibration. Turning it off and then back on again won't affect the EQ at all, when Audyssey is on.

Regards,
Mike
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post #30520 of 30527 Old 08-19-2017, 08:47 AM
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I'm finding I need to use high damping on my LV12R to get best results with the Yamaha 2070. Probably because the transient response on the speakers is considerably better than with the previous Yamaha AVR.
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post #30521 of 30527 Old 08-19-2017, 02:39 PM
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ok, gonna stomp with the sweeps as I have gone high enough to make me happy and dont play stuff that high anyways...glad my subs made it no issues and all I did was turn off my avr folume limiter to go past 0 mv. I went to +10 with a total max on avr of +18. didnt change oanything on subs, trims, gains....just turned up volume and used channel 4 instead of channel 3 in rew.

here is the graph
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File Type: jpg fv25hp and fv15hp.jpg (103.4 KB, 383 views)

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30522 of 30527 Old 08-19-2017, 02:40 PM
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Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30523 of 30527 Old 08-20-2017, 04:18 AM
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Planning on relocating the plate amp on my F15 externally, how far can i go without compromising the quality of the sound ?
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post #30524 of 30527 Old 08-20-2017, 03:50 PM
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now here is an odd question, why did it take me turning my avr up to +10 mv to get 120db on rew, when I can easily get 120db in my room with a bass song at lets say 0mv...nothing I dod I really scientific to a tee...just generalized observations. It does surprise me that the respense was pretty flat at 120db from 12-60hz or so...dont know why it kind abruptly stops around 60...my crossover is 80 for all speakers. Think I could spend months tweaking...lucky this system sounds really good and Im not too ocd. just lucky to get bored every now and then.
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Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30525 of 30527 Old 08-20-2017, 04:06 PM
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Quote:
Originally Posted by torii View Post
now here is an odd question, why did it take me turning my avr up to +10 mv to get 120db on rew, when I can easily get 120db in my room with a bass song at lets say 0mv...nothing I dod I really scientific to a tee...just generalized observations. It does surprise me that the respense was pretty flat at 120db from 12-60hz or so...dont know why it kind abruptly stops around 60...my crossover is 80 for all speakers. Think I could spend months tweaking...lucky this system sounds really good and Im not too ocd. just lucky to get bored every now and then.
It's because of all the other info outside of your subs' operating range ( above 80 Hz ) in the source material.

For example, I can hit 124dB during Flight of the Phoenix - Barrel Roll scene playing @ -12.5dB MV. However, the last time I did the output compression, I couldn't hit 120dB until the RMS Level dBFS was @ -3.0 and the AVR MV was @ +2dB.
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Last edited by chucky7; 08-20-2017 at 05:35 PM.
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post #30526 of 30527 Old 08-20-2017, 04:27 PM
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it almost seemed/felt like my subs were playing better/smoother when I was getting em over 100db's like just warming up I have all the gains and trims set normal listening which is usually maybe 5 db hot from audyssey so I bet I could crank em up a bit more, well the fv25hp for sure, the fv15hp was working hard as I had my laptop doing rew ontop of this sub...it was sweating but sounded fine. felt like wind was shooting out the port, surprised the port plug didnt come firing out. lol.

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Rythmik FV25HP, Rythmik FV15HP
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post #30527 of 30527 Old 08-20-2017, 04:57 PM
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Also, when you measure LFE channel in REW it will be lower because it is -12dBFS and also bass management is not included.
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f12g subwoofer , integra dtc 9.8 , lv12r , Rythmik , Rythmik Audio , Rythmik Audio F12 Direct Servo Subwoofer , Rythmik Audio F15 Subwoofer , servo sub

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