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Official JTR speaker thread - Page 234

post #6991 of 18511
Quote:
Originally Posted by Gorilla83 View Post

It's really hard to give you an accurate/best situation for sub placement without measuring each position. If you're moving the Caps toward the corners it most likely will have an effect on how they sound - for better or for worse we cannot say yet for sure.

In regards to your stands - If you decide to build your own stands (why not!?) I'd be happy to help via PM or phone. If you decide to throw some together and don't like how they turn out, wood is CHEAP and it's easy enough to try another design. Well worth your time for the learning experience and enjoyment IMO. biggrin.gif Check out the DIY FAQ link in my signature for a link to the boxnotes program. It's free and is super easy to use to calculate cut list dimensions for anything box related you want to build - subs, speakers, or speaker stands. smile.gif And yes, the brace would go right down the middle of the box perpendicular to the top. In box notes speak you would be duplicating the "back" panel for the brace.

Okay gotcha thanks man. I did download boxnotes last night and yea, it was very easy to see it calculate the numbers and stuff.

You know I had a long post with questions for you here, but I figure I'll take it to PM since it is a tad off topic.
post #6992 of 18511
Quote:
Originally Posted by purbeast View Post

Yeah I went by 2 fabric stores today (Joann and G Street) and neither had carpet type speaker cover, so I think I may order a gallon of Duratex, use that for my center stand, and then if I can think of a way to build a L/R stand, use it for that. If I can't think of a way to build a L/R stand, I will just get the trial Duratex and use that for my center.

Anyone have any suggestions how to build a 16 - 18 inch high speaker stand for T12's? I have 0 woodworking skills so it would have to be cuts from the people at HD. The center one I built was just a 10' 2x6 that they cut into the lengths I needed, and a 1/2" thick piece of plywood cut to the size I needed. I just put it all together.

But they don't make 2x16's lol. I was thinking about using 2 2x10's though, and stacking them, but I don't know how to connect 2 pieces of that stacked.

Any suggestions?

I might suggest making some sort of angle on that center channel stand to help the T12's compression driver's aim. Angling the box would aim it directly at ear height.
post #6993 of 18511
Quote:
Originally Posted by beastaudio View Post

I might suggest making some sort of angle on that center channel stand to help the T12's compression driver's aim. Angling the box would aim it directly at ear height.

Yup that is the plan. Going to get 2 angled door stoppers to put under the speaker to angle them up. That is what the previous owner did as well and it looked nice on his setup.

If that doesn't end up getting the angle I want then I may order those mopad things and put them on the stand and use those to angle them upwards.
post #6994 of 18511
Quote:
Originally Posted by Frohlich View Post

Support my T12s no problem

:

I'd love to see your before and after hearing charts smile.gif

wow, those are massive!
post #6995 of 18511
Ok guys. I m going to try and rerun Audyssey and NOT mess up everything, which will be a first for me BTW. Heading to Guitar Center to get a mic stand that will hold the Audyssey mic correctly and will pick up a SLP meter too. Since those of us with JTR speakers have to tweak the post Audyssey settings what do you do first, run Audyssey and then adjust level calibration or level calibrate first then run Audyssey? Every time I run Audyssey it puts my LCR at -12 and the subs at -8db. Basically it tames the hell out of my system volume wise. Do I need to consider attenuators?

One last question. What do you guys set the crossover at for your JTR's? Audyssey loves 80hz but I figured it would be best to ask here.
Edited by SeaNile - 1/26/13 at 2:28pm
post #6996 of 18511
Quote:
Originally Posted by carp View Post

Nate, how much water? Any kind of ratio of water to duratex? A finish like the JTR's would be perfect for me obviously.

thanks

I add about 5-8% to what is in you cup. They say in the instruction to do exactly that though they don't recommend a certain amount, just that it will give good smoother results. My 2242H boxes I used 5% but didn't have a foam roller. The best way to do it IMO is to get a scrap piece of wood and take a small amount of duratex and try it out tinned out in different amounts and see what looks best. So far a smooth roller and 6% water looks to be pretty good. I'm sure JTR's cab guys sprays but thinned out enough, it looks damn close!
post #6997 of 18511
Thanks to Gorilla83 he lead me on the right path of parts to get to build some stands.

So today I ended up putting together 2 stands for my mains.

They are 17" x 16.5" x 14". I decided to make them 17" tall because the ideal listening height at 18" is for when my seats are all the way up, and I tend to watch movies with my chair reclined a bit, so I figured hey why not drop it 1 inch tongue.gif

Anyways here are a few pics I snapped.







I'm going to order a gallon of Duratex right now and finish the 3 stands with it. Tomorrow I'm going to fill in some gaps and sand it all down, getting it ready to be finished with the Duratex.

I'll post some pics when it's all said and done.
post #6998 of 18511
Quote:
Originally Posted by purbeast View Post

Thanks to Gorilla83 he lead me on the right path of parts to get to build some stands.

So today I ended up putting together 2 stands for my mains.

They are 17" x 16.5" x 14". I decided to make them 17" tall because the ideal listening height at 18" is for when my seats are all the way up, and I tend to watch movies with my chair reclined a bit, so I figured hey why not drop it 1 inch tongue.gif

Anyways here are a few pics I snapped.







I'm going to order a gallon of Duratex right now and finish the 3 stands with it. Tomorrow I'm going to fill in some gaps and sand it all down, getting it ready to be finished with the Duratex.

I'll post some pics when it's all said and done.
Those look great.

I look forward to the pictures of your system with those installed.
post #6999 of 18511
^ Nice stands Purbeast!
post #7000 of 18511
Purbeast, you should stick some subs in those stands!!! They are there anyways, why not!!! biggrin.gif
post #7001 of 18511
Nice work, Drew! Satisfying to DIY, eh? biggrin.gif
post #7002 of 18511
Quote:
Originally Posted by SeaNile View Post

Ok guys. I m going to try and rerun Audyssey and NOT mess up everything, which will be a first for me BTW. Heading to Guitar Center to get a mic stand that will hold the Audyssey mic correctly and will pick up a SLP meter too. Since those of us with JTR speakers have to tweak the post Audyssey settings what do you do first, run Audyssey and then adjust level calibration or level calibrate first then run Audyssey? Every time I run Audyssey it puts my LCR at -12 and the subs at -8db. Basically it tames the hell out of my system volume wise. Do I need to consider attenuators?

One last question. What do you guys set the crossover at for your JTR's? Audyssey loves 80hz but I figured it would be best to ask here.

Level setting before EQ won't do anything. Audyssey will trump your settings. Looks like some attenuators are in your future smile.gif As has been pointed out, if you run Aud. and you get to -12 (max you AVR does assuming) then you are already cutting off its ability to additionally attenuate certain frequencies beyond 12dB. Good news is, PE sells quality Att. devices on the cheap. Go scoop a few. Your subs should be ok, but for the mains:

http://www.parts-express.com/pe/showdetl.cfm?partnumber=266-244
post #7003 of 18511
Quote:
Originally Posted by SeaNile View Post

Ok guys. I m going to try and rerun Audyssey and NOT mess up everything, which will be a first for me BTW. Heading to Guitar Center to get a mic stand that will hold the Audyssey mic correctly and will pick up a SLP meter too. Since those of us with JTR speakers have to tweak the post Audyssey settings what do you do first, run Audyssey and then adjust level calibration or level calibrate first then run Audyssey? Every time I run Audyssey it puts my LCR at -12 and the subs at -8db. Basically it tames the hell out of my system volume wise. Do I need to consider attenuators?

One last question. What do you guys set the crossover at for your JTR's? Audyssey loves 80hz but I figured it would be best to ask here.

John - If you're concerned about the level settings, bypass your XPA-5 and connect the T12s to your receiver. Although explain what you mean by 'taming' your system though? When I was over the other day I thought they sounded great. You can always adjust the levels manually too - but as beast stated it's always done post-Audyssey.
post #7004 of 18511
I figure it's time to learn this stuff and at least be able to run Audyssey without any help! AllI need is the boom part of the mic stand and I should have everything needed. Picked up a SPL meter and I do have a mic stand so the mic is placed properly. The inuke6000dsp showed up yesterday so I'll play around with the system and hook up that amp for fun. I'm not looking forward to the back of my rack as the wires seem to be everywhere.

What I meant by taming the system is before when Audyssey would put the JTR's at -12 everything seemed so quiet. I'd be listening to things at +6 when typically -3 to 0 would be plenty loud.

And the attenuator goes where exactly?
Edited by SeaNile - 1/27/13 at 7:37am
post #7005 of 18511
I am really beginning to hate Audyssey, but I am going to learn this! So I just put my amp gain from about 4 oclock to noon, reran Audyssey and the numbers look jacked up to me. Still puts LCR and subs at -12. Pulled out the SPL meter and the LCR's are at 75db (at -12) rears are 71db (at -2) and sub is at 55db. Shouldn't all of the speakers be at 75db during level calibration?
post #7006 of 18511
Quote:
Originally Posted by SeaNile View Post

I am really beginning to hate Audyssey, but I am going to learn this! So I just put my amp gain from about 4 oclock to noon, reran Audyssey and the numbers look jacked up to me. Still puts LCR and subs at -12. Pulled out the SPL meter and the LCR's are at 75db (at -12) rears are 71db (at -2) and sub is at 55db. Shouldn't all of the speakers be at 75db during level calibration?

John -yes, the goal is typically 75db for all. Mine never gets it quite right either and when I have my amp gain dialed back the subs are always way too cold. Turn your sub amp gain back up, re run, then dial them all in with your meter when done. You will probably have to bump your surrounds up a few db like we did before and you will be good.

It really doesn't matter what values Audyssey sets as long as you can match them with your meter after. You can always apply global gain settings per source with your receiver if you prefer to see a lower number on the dial when you crank it up.
post #7007 of 18511
Not too add to the confusion but I just hooked up the inuke6000 amp. Looks like it requires an XLR splitter to drive both A&B channels?

Anyway, if I am to get the subs to read 75db I'll give it a shot. I've only got about a week of this before the other subs show up and then it will get real confusing for me and Audyssey.
post #7008 of 18511
post #7009 of 18511
Quote:
Originally Posted by SeaNile View Post

Not too add to the confusion but I just hooked up the inuke6000 amp. Looks like it requires an XLR splitter to drive both A&B channels?

Anyway, if I am to get the subs to read 75db I'll give it a shot. I've only got about a week of this before the other subs show up and then it will get real confusing for me and Audyssey.

Sorry you are all confused. Audyssey has to work with what it's got, so my suggestion, now that I know you have gain knobs on you amps, what you need to do BEFORE Audyssey is a little different from what I originally suggested. The attenuators will work still, but you could also just level match the amp gains with all the speaker trims set at "0" on the AVR, and adjust the amp gains until each channel reads 75dB, then run Audyssey.
post #7010 of 18511
Quote:
Originally Posted by carp View Post

Cool review of the pro Noesis.

http://forums.prosoundweb.com/index.php/topic,141934.0.html

I've read a few others on the pro boards too that were also very positive. It seems the Noesis is getting great reviews in all of its configurations. There is a chance my speakers will be built this week! I can't wait to get them, going through reference level withdrawls.

http://forums.prosoundweb.com/index.php/topic,140751.0.html
post #7011 of 18511
Quote:
Originally Posted by beastaudio View Post

Sorry you are all confused. Audyssey has to work with what it's got, so my suggestion, now that I know you have gain knobs on you amps, what you need to do BEFORE Audyssey is a little different from what I originally suggested. The attenuators will work still, but you could also just level match the amp gains with all the speaker trims set at "0" on the AVR, and adjust the amp gains until each channel reads 75dB, then run Audyssey.

If I remember right, he is using an Emotivalounge amp without gain settings for his LCR so he does need attenuators.
post #7012 of 18511
This is going to be my first message here - Hello to everybody smile.gif

Never heard about JRT speakers before confused.gif
Just noticed a pair on ebay Click.
Are they really JRT ? Mainly they are more industrial looking speakers.
What model ? How they sound ?


krgds
post #7013 of 18511
Those are JRT, This is JTR smile.gif A little different smile.gif Take a look at the actual JTR website smile.gif www.jtrspeakers.com, those are the real deal smile.gif The ones you have linked to from ebay are not.
post #7014 of 18511
Quote:
Originally Posted by Jedirun View Post

If I remember right, he is using an Emotivalounge amp without gain settings for his LCR so he does need attenuators.

12db attenuators have been ordered.
Onkyo PRSC 886
Emotiva XPA-5
JTR triple 12LF for LCR
2 CHT SS-18.2 subs
inuke6000dsp amp
Crest CC4000 amp (for additional subs on their way)
4 SS-18.1 CHT soon to be added
post #7015 of 18511
"emotivalounge" stupid autocorrect.
post #7016 of 18511
Quote:
Originally Posted by beastaudio View Post

Those are JRT, This is JTR smile.gif A little different smile.gif Take a look at the actual JTR website smile.gif www.jtrspeakers.com, those are the real deal smile.gif The ones you have linked to from ebay are not.

These are JRT's



and these are JTR's



Note the difference ... smile.gif
post #7017 of 18511
Greetings from Omaha,

Need input on amp(s) choice. Finishing new house...basement in planning stages. HT will be open to bar/pool table area, not dedicated. Space is very large. The only "sure thing" about the setup are the speakers, 3 Triple 12HT for LCR, 4 Slanted 8HT for surrounds, and 2 Caps (2400). I am 75/25 music/HT, but LCR will still be put behind AT screen. Pre/pro to be determined.

Trying to figure out best amp(s) to power these incredible speakers. I've done so much research my head is spinning. I seem to recall a post where Jeff recommended Crest, QSC, and Lab Gruppen. I know there are some who love their consumer amps as well (RMK and his Sunfire). Seems I would need an entire rack of pro amps to power 7 speakers....and that's ok too. Fan noise and no 12V trigger concern me though. So many options....Emotiva, Crest, Lab, QSC, Crown, Sunfire, Parasound, Marathon, D Sonic, Wyred, ect...

For those of you with the wonderful JTR setups (RMK, Frohlich, ect), if you could start over with the above speaker setup...what would be your choice for amps?

Thanks for your input,
Chad
post #7018 of 18511
Quote:
Originally Posted by cshuff View Post

Greetings from Omaha,

Need input on amp(s) choice. Finishing new house...basement in planning stages. HT will be open to bar/pool table area, not dedicated. Space is very large. The only "sure thing" about the setup are the speakers, 3 Triple 12HT for LCR, 4 Slanted 8HT for surrounds, and 2 Caps (2400). I am 75/25 music/HT, but LCR will still be put behind AT screen. Pre/pro to be determined.

Trying to figure out best amp(s) to power these incredible speakers. I've done so much research my head is spinning. I seem to recall a post where Jeff recommended Crest, QSC, and Lab Gruppen. I know there are some who love their consumer amps as well (RMK and his Sunfire). Seems I would need an entire rack of pro amps to power 7 speakers....and that's ok too. Fan noise and no 12V trigger concern me though. So many options....Emotiva, Crest, Lab, QSC, Crown, Sunfire, Parasound, Marathon, D Sonic, Wyred, ect...

For those of you with the wonderful JTR setups (RMK, Frohlich, ect), if you could start over with the above speaker setup...what would be your choice for amps?

Thanks for your input,
Chad

Hey Chad, good choice for the speakers. My Sunfire amp is long gone and I have been running with the Wyred 4 Sound MC7 and Stereo amps to fill out my 9 channels. I'm using the Wyred 1000 wpc into 4ohms) amps for the LCR's and the 500 wpc for the surround/height speakers. I believe D-Sonics are similar to Wyred for a little less $.

Re the Pro amps, Archaea just posted about a new Behringer Inuke amp here that looks interesting. The DSP control would be nice and they would certainly give your T12's all the juice they need. smile.gifhttp://www.avsforum.com/t/1454879/theres-a-new-sheriff-in-town-inuke-dsp-12000#post_22891060

I like my amps powerful and reliable and am very happy with Wyred ...
post #7019 of 18511
Quote:
Originally Posted by SeaNile View Post

12db attenuators have been ordered.
Onkyo PRSC 886
Emotiva XPA-5
JTR triple 12LF for LCR
2 CHT SS-18.2 subs
inuke6000dsp amp
Crest CC4000 amp (for additional subs on their way)
4 SS-18.1 CHT soon to be added

Ok, that is the same amp I used on my T12's for a while. You will need the attenuators. Mine also, at a 12 foot listening distance set mine at -12 and even though I never did get the attenuators, I needed them.
post #7020 of 18511
Hey Beast, is that your wife in your Avatar photo doing a pole dance with the line source?

If so, she looks like a fun girl ... smile.gif
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