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Official Rythmik Audio Subwoofer thread - Page 312

post #9331 of 15160
Quote:
Originally Posted by jbrown15 View Post

I hear ya, it's mostly a personal thing. I like nice clean lines and not clutter, (not that yours is cluttered) which is why I'm going to be build a front stage in my room soon with a false wall and an acoustically transparent screen to hide all of my speakers and subs behind.

You sound just like my good friend that lives down the street. He too has the same floor plan as I do and plan to do exactly what you mentioned.

I cannot wait to help him plan his project. cool.gif
post #9332 of 15160
Quote:
Originally Posted by Axxion View Post

Lol so your saying i just need to position the sub according to my sweet spot and 1 will be enough. How id love every excuse for the second one but if one does it, thats all i need.

LOL. Either put the sub where ya want, then once you find that spot you'll have the X-mark that as your sweet spot. Beware........ you might not like where you may need that chair / sofa at smile.gif .

I guess what else you could do is put the sub where you plan to SIT and then sub crawl. Once you find that sweet spot, move the sub there and more than likely that's where the sub will need to go. However, I did my the other way (sub where I wanted and found where to put my chairs) and thank goodness my room is almost a perfect rectangle.

Oh also acoustic panels and bass-traps help out greatly!!
post #9333 of 15160
Quote:
Originally Posted by Shift View Post

You sound just like my good friend that lives down the street. He too has the same floor plan as I do and plan to do exactly what you mentioned.

I cannot wait to help him plan his project. cool.gif

Yeah as soon as my new mains show up I'll get started on the project, should be fun.
post #9334 of 15160
Quote:
Originally Posted by jbrown15 View Post

Yeah as soon as my new mains show up I'll get started on the project, should be fun.

Good luck with your project, I for sure know it will be fun. I cannot wait to see pics!!

For me, I prefer to do a real HT room once I get a house w/ a Basement and here in Central Texas that's not happening!!! mad.gif However whom knows what will happen in the near future with a relocation package cool.gif
post #9335 of 15160
Quote:
Originally Posted by Shift View Post

Good luck with your project, I for sure know it will be fun. I cannot wait to see pics!!

For me, I prefer to do a real HT room once I get a house w/ a Basement and here in Central Texas that's not happening!!! mad.gif However whom knows what will happen in the near future with a relocation package cool.gif

breaker breaker, what were your previous subs? just curious what you ditched for the lvr12's?
post #9336 of 15160
Quote:
Originally Posted by Shift View Post

I guess what else you could do is put the sub where you plan to SIT and then sub crawl. Once you find that sweet spot, move the sub there and more than likely that's where the sub will need to go.

That is actually the proper way to perform a sub crawl. Most of the time the seating positions are fixed and the sub placement is what gets adjusted.. biggrin.gif
post #9337 of 15160
Quote:
Originally Posted by basshead81 View Post

breaker breaker, what were your previous subs? just curious what you ditched for the lvr12's?

Basshead - I prefer not to say as I will get some neg feedback or their opinions.
As I respect the other sub company and Rythmik, I really do not want to steer anything up and have bashing

Even though we "all" are title to our own opinions either way.

So with that being said the best I can do tell you which subs I 'ditched' for my lv12r's were either from svs, velodyne, psa, def tech, outlaw or hsu.
I can say it was 'not' Epik wink.gif
post #9338 of 15160
Quote:
Originally Posted by Shift View Post

Basshead - I prefer not to say as I will get some neg feedback or their opinions.
As I respect the other sub company and Rythmik, I really do not want to steer anything up and have bashing

Even though we "all" are title to our own opinions either way.

So with that being said the best I can do tell you which subs I 'ditched' for my lv12r's were either from svs, velodyne, psa, def tech, outlaw or hsu.
I can say it was 'not' Epik wink.gif

I understand, what about a pm? I would like to know just for the sake of knowing lol.
post #9339 of 15160
Quote:
Originally Posted by Axxion View Post

So its really a tough call on that second sub. Some of you say go for it. Some of you say one could be enough in the right conditions. Me being a rookie HT assembler its really confusing. Anyone in the houston area want to crituque my setup? I dont know if its true or not but i really dont think the one sub is near its limits. I do feel my ears getting pressurized by it quite a bit. Slam is really good too. I just dont know how going about finding out if i have flat response or if i could really use the second one.

You can try one and if you have a small window to get a second with the discount if you feel you need/want a second sub. The trouble comes if you're torn between a more expensive sub or two lower cost subs (ex Fv15HP vs 2 LVs). You won;t know how subs will sound in your room until you try them. If you have sub(s) now placement issues will be similar with the new sub exceot of course for better frequency response with rythmik. For ex my old Hsu VTF3Mk2 behaved similar to my fv15hp except not as deep and nowhere near as clean. Corner placement gave similar issues with both subs, a couple bad peaks. The fv15 wasn;t as bad due to the better sound but my final prferred location turned out to be the same, nearefield near the middle of the rear wall behing my seating. The rythmik held up the lower frequencies very nicely where the Hsu was weak in the low 20s at that location (but I sacrificed deepness for cleanness with the Hsu) - I have it all with the rythmik BTW...
post #9340 of 15160
Quote:
Originally Posted by Shift View Post

You'll for sure gain at least 2db's with adding a 2nd sub. However its not really why I got a 2nd sub, I got a 2nd sub to equal out the balance of my room so that way I really don't need to sit in a "SWEET SPOT" to get the optimal bass when only using one sub (But this is my humble opinion why I added a 2nd sub).

NOTE: I am a fan of sub crawling. Put your sub/subs where you want. Play a frequency tune (maybe 40hz) and crawl on your knees. Once you find the most output area of your room thats where you'll get the most bass at.

Believe it or not, when moved my HT chairs 3' forward the bass was not as optimal, then scooted them back 3' and I was a whole another feel to it!

I'd play frequency sweeps, you should be looking for smooth response at least as much as output (which corner loading would likely be strongest for).
post #9341 of 15160
Quote:
Originally Posted by Axxion View Post

What about buying a fv15hp to go with my f15hp? How would that work out? Or can i get the desired effect with the tightness of the sealed?

If you get FV15HP, then your FV15HP will be dialed in as 3-5db louder than F15HP, or you don't take advantage of full capacity from two subs combined. The ideal case is that both subs reach their max at the same time, instead of one of them becoming bottleneck. The second issue is the phase alignment at the bottom frequency (20hz and below). Sealed subs have vented subs has about 150 to 180 degrees phase difference towards 20hz, which most likely need to cancellation. Some may say Audyssey multi-sub distance adjustment can solve the problem. But that distance adjustment is already used to adjust the phase alignment at crossover point, we cannot use it for another purpose. In short, to make F15HP work with FV15HP, one needs to turn on rumble filter on F15HP (you can try that to see if you like the sound), and use 1 port mode with rumble filter in OFF/1 position for FV15HP.
post #9342 of 15160
Quote:
Originally Posted by mikepos View Post

You can try one and if you have a small window to get a second with the discount if you feel you need/want a second sub. The trouble comes if you're torn between a more expensive sub or two lower cost subs (ex Fv15HP vs 2 LVs). You won;t know how subs will sound in your room until you try them. If you have sub(s) now placement issues will be similar with the new sub exceot of course for better frequency response with rythmik. For ex my old Hsu VTF3Mk2 behaved similar to my fv15hp except not as deep and nowhere near as clean. Corner placement gave similar issues with both subs, a couple bad peaks. The fv15 wasn;t as bad due to the better sound but my final prferred location turned out to be the same, nearefield near the middle of the rear wall behing my seating. The rythmik held up the lower frequencies very nicely where the Hsu was weak in the low 20s at that location (but I sacrificed deepness for cleanness with the Hsu) - I have it all with the rythmik BTW...
he already has a f15...
post #9343 of 15160
Well...my first neighbor visit today post FV15HP purchase...

I was like...the sound is not too loud... We can both talk here.

Neighbor, "The music isn't that loud dude, but you are shaking my whole damn house, what do you have in there (as he tries to look past me).

Knowing the law...I tell him..as long as my music is above so many DB ...I think I am cool...but will try to keep it down biggrin.gif

Regulations have not caught up to "sub" harmonic frequencies. tongue.gif
post #9344 of 15160
Quote:
Originally Posted by Newbie01 View Post

Well...my first neighbor visit today post FV15HP purchase...

I was like...the sound is not too loud... We can both talk here.

Neighbor, "The music isn't that loud dude, but you are shaking my whole damn house, what do you have in there (as he tries to look past me).

Knowing the law...I tell him..as long as my music is above so many DB ...I think I am cool...but will try to keep it down biggrin.gif

Regulations have not caught up to "sub" harmonic frequencies. tongue.gif

Lol nice:D
post #9345 of 15160
Quote:
Originally Posted by Newbie01 View Post

Well...my first neighbor visit today post FV15HP purchase...

I was like...the sound is not too loud... We can both talk here.

Neighbor, "The music isn't that loud dude, but you are shaking my whole damn house, what do you have in there (as he tries to look past me).

Knowing the law...I tell him..as long as my music is above so many DB ...I think I am cool...but will try to keep it down biggrin.gif

Regulations have not caught up to "sub" harmonic frequencies. tongue.gif

You might want to consider something like a Gramma. That will diminish the vibrations sent through the floor, which might help in that regard.
post #9346 of 15160
Quote:
Originally Posted by mikepos View Post

You can try one and if you have a small window to get a second with the discount if you feel you need/want a second sub. The trouble comes if you're torn between a more expensive sub or two lower cost subs (ex Fv15HP vs 2 LVs). You won;t know how subs will sound in your room until you try them. If you have sub(s) now placement issues will be similar with the new sub exceot of course for better frequency response with rythmik. For ex my old Hsu VTF3Mk2 behaved similar to my fv15hp except not as deep and nowhere near as clean. Corner placement gave similar issues with both subs, a couple bad peaks. The fv15 wasn;t as bad due to the better sound but my final prferred location turned out to be the same, nearefield near the middle of the rear wall behing my seating. The rythmik held up the lower frequencies very nicely where the Hsu was weak in the low 20s at that location (but I sacrificed deepness for cleanness with the Hsu) - I have it all with the rythmik BTW...
I already have a f15hp. Im considering adding a second.
post #9347 of 15160
Quote:
Originally Posted by Axxion View Post

I already have a f15hp. Im considering adding a second.

Ah sorry, was thinking of another poster.
post #9348 of 15160
Quote:
Originally Posted by Axxion View Post

So its really a tough call on that second sub. Some of you say go for it. Some of you say one could be enough in the right conditions. Me being a rookie HT assembler its really confusing. Anyone in the houston area want to crituque my setup? I dont know if its true or not but i really dont think the one sub is near its limits. I do feel my ears getting pressurized by it quite a bit. Slam is really good too. I just dont know how going about finding out if i have flat response or if i could really use the second one.

Get REW (Room EQ Wizard) from hometheatershack.com and learn how to use it (they support it very well over at HTS). Then you can measure your room yourself and know what kind of response you're getting. REW is free, though you will need to purchase a mic. But that will cost you only 5% - 10% of the price of a new sub.
post #9349 of 15160
Whats a good online sound sweep or tone i can use to test sub crawling? Im at home finally and want to test this.
post #9350 of 15160
Quote:
Originally Posted by Axxion View Post

Whats a good online sound sweep or tone i can use to test sub crawling? Im at home finally and want to test this.

try youtube...search sound sweep or pink noise.
post #9351 of 15160
I found a pretty good one on a website. Plays what tone i tell it to. I played 20hz for a few minutes trying to find out where my listening position should be, and i find the further towards the back of the room i go, the more pressure i feel in my ears. As well as it getting louder. My couch listening position is right where it gets pretty strong, so i think my subs location is good. The radiator on the back of the sub is hot! Almost too hot to touch. I stop what im doing and let it cool. I then figure out i can use my keyboard to adjust the tone by 2hz at a time up or down. I find what i suspected in youtube tone sweeps, lots of volume gain at 50-55 hz then a sudden drop at 60. The eq on the back of the amp really helps out on this. Now i hear what i think is even volume at all hz. Ive done some experimenting in the past where i cut 50-55 hz before and it sounded better to my ears, but i switched it back because at the time i had no idea what i was doing. I will test this setting and see how i like it. Im really leaning on that second sub just for all the benefits it will add. Heres the web address for that tone generator.
Www.audionotch.com/app/tune
post #9352 of 15160
Quote:
Originally Posted by Rythmik View Post

To my surprise, yesterday my wife asked me to play the track again and commented she and my teen daughter like the music and protested when I stopped in the middle.
Can you have your wife and baby girl see if "Thuggish Ruggish Bone" is recorded with distortion or I just shouldn't play it at reference? If they can't tell maybe they have an expert close by for a second opinion.

Don't judge me, I've got Janis Joplin, Bob Dylan, Jim Croce, Floyd, etc... on vinyl and my speakers (minus the dual FV15HP) cost more then my car. But sometimes even I hang with bone thugs.
post #9353 of 15160
They should seriously add eq sliders instead of knobs on the back for adjusting multiple frequencies, insead of just one range around a peak frequency. My sc1222k doesnt eq the sub, only speakers. If i had the ability to eq it better placement wouldnt be such an issue. Wait isnt their an attachment thing i can buy to go inbetween the lfe out of my avr and before the input on the sub that has eq adjustments?
post #9354 of 15160
Quote:
Originally Posted by Axxion View Post

I found a pretty good one on a website. Plays what tone i tell it to. I played 20hz for a few minutes trying to find out where my listening position should be, and i find the further towards the back of the room i go, the more pressure i feel in my ears. As well as it getting louder. My couch listening position is right where it gets pretty strong, so i think my subs location is good. The radiator on the back of the sub is hot! Almost too hot to touch. I stop what im doing and let it cool. I then figure out i can use my keyboard to adjust the tone by 2hz at a time up or down. I find what i suspected in youtube tone sweeps, lots of volume gain at 50-55 hz then a sudden drop at 60. The eq on the back of the amp really helps out on this. Now i hear what i think is even volume at all hz. Ive done some experimenting in the past where i cut 50-55 hz before and it sounded better to my ears, but i switched it back because at the time i had no idea what i was doing. I will test this setting and see how i like it. Im really leaning on that second sub just for all the benefits it will add. Heres the web address for that tone generator.
Www.audionotch.com/app/tune
I'm no expert but that doesn't seem right. I recently purchased a FV15HP and at the most, it seems to get slightly warm to the touch. And I run those same 20hz test tones at a high enough volume with an spl meter showing 95 to 100 db.

Someone with a little more experience and knowledge as to how warm the amp should get might wish to chime in here.
post #9355 of 15160
Quote:
Originally Posted by Torqdog View Post

I'm no expert but that doesn't seem right. I recently purchased a FV15HP and at the most, it seems to get slightly warm to the touch. And I run those same 20hz test tones at a high enough volume with an spl meter showing 95 to 100 db.

Someone with a little more experience and knowledge as to how warm the amp should get might wish to chime in here.
That raises a concern for me then. If nothing is wrong with my amp the only thing i can think of is yours is vented, and the massive amounts of air flow is cooling your amp. It was very hot, i could touch it with my hands, but if i put my wrist on it, the pain threshold would be passed almost instantly. I dont know what volume i was running, but it wasnt nowhere close to 100db. I was only in the -30 range on my avr and my computer volume was maxed.
Edited by Axxion - 4/20/13 at 7:12pm
post #9356 of 15160
Quote:
Originally Posted by dstew100 View Post

Can you have your wife and baby girl see if "Thuggish Ruggish Bone" is recorded with distortion or I just shouldn't play it at reference? If they can't tell maybe they have an expert close by for a second opinion.

Don't judge me, I've got Janis Joplin, Bob Dylan, Jim Croce, Floyd, etc... on vinyl and my speakers (minus the dual FV15HP) cost more then my car. But sometimes even I hang with bone thugs.

turn on pandora and type "bass 305", best woofer test music on the planet!
post #9357 of 15160
Quote:
Originally Posted by Axxion View Post

They should seriously add eq sliders instead of knobs on the back for adjusting multiple frequencies, insead of just one range around a peak frequency. My sc1222k doesnt eq the sub, only speakers. If i had the ability to eq it better placement wouldnt be such an issue. Wait isnt their an attachment thing i can buy to go inbetween the lfe out of my avr and before the input on the sub that has eq adjustments?

I am not sure I followed all this. The PEQ includes one knob to adjust the frequency, and another to adjust the Q (bandwidth of the setting). It is a single-band parametric equalizer, sliders would not help (and would take up much more space, and tend to get dirty/noisy faster, etc.) I use mine to tune out a room mode peak around 30 Hz and it works quite well. To really tune something like that you need measurement capability; check out the REW thread on AVS.

There are a number of devices you could put between the AVR and sub to equalize the sub, from simple graphic equalizers to small parametric to miniDSP to DEQx, TaCT, etc. Prices from $100 to $10k+. Probably the most-cited semi-automatic sub EQ unit is the Antimode.
Edited by DonH50 - 4/21/13 at 3:01pm
post #9358 of 15160
Quote:
Originally Posted by Torqdog View Post

I'm no expert but that doesn't seem right. I recently purchased a FV15HP and at the most, it seems to get slightly warm to the touch. And I run those same 20hz test tones at a high enough volume with an spl meter showing 95 to 100 db.

Someone with a little more experience and knowledge as to how warm the amp should get might wish to chime in here.

I have an LV12R for review, and even after pushing it pretty hard on some movie tests the amp wasn't much more then warm.
post #9359 of 15160
Quote:
Originally Posted by basshead81 View Post

turn on pandora and type "bass 305", best woofer test music on the planet!

Anything in specific? Looks like they put out almost a dozen albums. I'm always on the lookout for subwoofer torture material.
post #9360 of 15160
Quote:
Originally Posted by JimWilson View Post

Anything in specific? Looks like they put out almost a dozen albums. I'm always on the lookout for subwoofer torture material.

the final frontier album has some good stuff on it! there is a song or 2 that dips below 20hz possibly 10hz range.

i believe its automated digital bass and computer bass that dig deep...

techmaster p.e.b bass computer is another good album!
Edited by basshead81 - 4/20/13 at 10:14pm
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