Help with first DIY: DO SI 18 - Page 17 - AVS Forum | Home Theater Discussions And Reviews
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post #481 of 603 Old 10-22-2014, 06:36 PM
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^^^I figured that's what you meant about being an old guy.
Maybe I will try my system with an with out Audessy and figure out what sounds best to my ear. Audessy probably designed or calibrated for systems like yours with 100 subs and big mains.
All forums have A-holes I've learned that from the various other forums I frequent. Sports forums are the worst with the A-holes. I stay away from those I guess if I was into fantasy football or gambling it would be a different story.


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post #482 of 603 Old 10-23-2014, 06:38 AM
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I love fantasy, but no need for forums, you can get the majority of the info you need right on the site you use. Your receiver likely has a "Bypass Aud. L/R" option. I have found decent success with that particular option. it simply preserves audyssey for your subwoofer and surround speakers, but bypasses it for your mains. I used to use this almost exclusively, until I went no audyssey at all. We can switch between the two at the g2g to let people make their own decisions on which type of sound they like better, a nicely sloping response, or a dead flat response.

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post #483 of 603 Old 10-23-2014, 08:09 AM
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Which slope does Audyssey give...sloping or dead-flat? I've learned I don't like dead flat.
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post #484 of 603 Old 10-23-2014, 08:56 AM
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My Denon has an Audessy and also Audessy Flat in the EQ.
@beastaudio I think the side by side comparison with and with out Audessy would be good to hear.


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post #485 of 603 Old 10-23-2014, 09:21 AM
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Quote:
Originally Posted by Gamecock24 View Post
My Denon has an Audessy and also Audessy Flat in the EQ.
@beastaudio I think the side by side comparison with and with out Audessy would be good to hear.


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I'm trying to remember, but when I did some sweeps comparing the regular Audyssey and the Audyssey Flat, the regular had more of a rolloff in the upper octaves that sounded better to me, the "Flat" curve was a little bright for my tastes.
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post #486 of 603 Old 10-23-2014, 09:26 AM
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I'm trying to remember, but when I did some sweeps comparing the regular Audyssey and the Audyssey Flat, the regular had more of a rolloff in the upper octaves that sounded better to me, the "Flat" curve was a little bright for my tastes.
That's where I'm at too...along with a boost in midbass and bass I find myself agreeing with Harman and like their recommendation of a downward slope starting in the bass and gradually reducing from there.
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post #487 of 603 Old 10-23-2014, 09:29 AM
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That's where I'm at too...along with a boost in midbass and bass I find myself agreeing with Harman and like their recommendation of a downward slope starting in the bass and gradually reducing from there.
Yep, I do prefer that slope. Use it in my truck setup as well.

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post #488 of 603 Old 10-23-2014, 10:27 AM
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Which slope does Audyssey give...sloping or dead-flat? I've learned I don't like dead flat.
Dead flat, with a MFC (midrange freq compensation) dip between 1-3khz that is "supposedly" to take out some harshness. It doesn't IMO

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My Denon has an Audessy and also Audessy Flat in the EQ.
@beastaudio I think the side by side comparison with and with out Audessy would be good to hear.


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Will do. Audyssey standard (or on Onkyo/Integra units Audyssey "movie") has a slight rolloff in the upper freqs. Im only talking above 12-15khz is where it starts rolling. Audyssey Flat ("Music" on Onk/Integra) is a flat response, no compensation all the way up to 20khz.

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post #489 of 603 Old 10-23-2014, 07:53 PM - Thread Starter
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What about the stuffing touching the connections? I have pillows, do I need to remove the cloth cases?


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post #490 of 603 Old 10-23-2014, 08:14 PM
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What about the stuffing touching the connections? I have pillows, do I need to remove the cloth cases?
Pillows and stuffing aren't conductive so you don't have to worry about them interacting with the wiring. But don't remove the pillow case as you don't want the stuffing to get into the sub.

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post #491 of 603 Old 10-23-2014, 08:16 PM - Thread Starter
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Pillows and stuffing aren't conductive so you don't have to worry about them interacting with the wiring. But don't remove the pillow case as you don't want the stuffing to get into the sub.

EDIT - WILL YOU HURRY THE HELL UP AND GET US SOME LISTENING IMPRESSIONS. YOU MAY NOT BE IMPATIENT BUT WE SURE ARE!!!!!

I was waiting for an answer to my question! Thanks for the quick response btw


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post #492 of 603 Old 10-23-2014, 10:34 PM - Thread Starter
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post #493 of 603 Old 10-24-2014, 03:34 AM
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What does that mean? You fired up the subs and are speechless right.


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post #494 of 603 Old 10-24-2014, 07:12 PM - Thread Starter
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Help with first DIY: DO SI 18

So there I was...it was the wee hours of the morning when I got all but my Hsu sub up and running. The sub cable wasn't long enough to reach the other side of the couch where it now lives. Had to buy a set of RCA couplers to extend it at RS today ($9!). I know I could've ordered some for way cheaper but I was anxious to get it done. Mmmmm...dual subs.

Last night I ran one mic position to get the new sub, which I'm dubbing the Rockbiter, going. Set it to my usual 5db hot and played some test tones, then some tunes and later watched Snowpiercer. The wife was at her folks' house for the night so I had free reign, plus I had the day off.

As I started with the test tones, things got weird. A few bass sweeps and I started tasting numbers and hearing colors. I think I hit negative hertz. It was like wonderland over there It was loud, strong and authoritative rattling different things at different frequencies. The Hsu extends to 16hz, but the rockbiter plays it much harder.

I moved to my music demo playlist as well as some bass heavy stuff. I'm proud to say that I finally heard Bass I Love You for the first time. The Hsu never really did anything on that track, but now I see what the fuss is about. Justin Timberlake's What Goes Around has some great low stuff that was even more impressive through the rockbiter.

Snowpiercer was a decent flick and had some good LFE from what I could tell, though again, everything wasn't really dialed in.

Today I got both subs hooked up and fully ran audyssey. I love dual subs!!! I had to cross the Hsu over pretty low, 40-60hz, to keep it from being localized since it was right next to me. Now I can cross them at 80hz with no worries.

Music and movie clips sound awesome and the bass just ensconces me. The demo disk was fun. I heard/felt a bunch of goodness that was new to me, particularly the Hulk, HTTYD and even Irene scenes.

There definitely seems to be a difference in sound between my sealed and ported subs. I can't really put my finger on it, but the ported seems more in your face while the rockbiter feels more subdued. At least until it's cranked anyway. More listening may pinpoint what I'm trying to figure out.

Anywho, many thanks to everyone for their help. Special thanks to beastaudio, Chalugadp, dgage, Scott simonian and popalock, couldn't have done it without yall. Here's some pics.

Silver bolts for a little bling
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Really like this look. The surrounds are flush with the baffle.
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With the new sofa and chair. Damn near broke my hand moving those in yesterday.
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post #495 of 603 Old 10-24-2014, 07:30 PM
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Now you need to watch the EOT scene. The rest of the movie is good too but you will probably replay the opening a dozen times before you see the rest of the movie.


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post #496 of 603 Old 10-25-2014, 10:29 AM
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Truth! Man for a first DIY build, you just beat the doors off of most people's maiden voyage to the netherrealm, including my own. excellent work good sir.

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post #497 of 603 Old 10-25-2014, 10:38 AM
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I just ran a sine wave sweep while the wife was gone and found out what in my house rattles at what frequency. It also seems like my house tuned at 29-30hz everything thing seemed crazy loud around there.


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post #498 of 603 Old 10-25-2014, 10:39 AM
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Truth! Man for a first DIY build, you just beat the doors off of most people's maiden voyage to the netherrealm, including my own. excellent work good sir.
Absolutely concur! Phenomenal job. I'm actually most surprised that you had that much patience to do such a good job...I would have said forget it a long time ago and would be listening to an unfinished sub and enjoying every minute of it.
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post #499 of 603 Old 10-25-2014, 10:47 AM
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Isn't that what you are doing anyways at this point?

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post #500 of 603 Old 10-25-2014, 11:13 AM - Thread Starter
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Help with first DIY: DO SI 18

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Truth! Man for a first DIY build, you just beat the doors off of most people's maiden voyage to the netherrealm, including my own. excellent work good sir.


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Absolutely concur! Phenomenal job. I'm actually most surprised that you had that much patience to do such a good job...I would have said forget it a long time ago and would be listening to an unfinished sub and enjoying every minute of it.

Thanks fellas! Having seen and heard the quality of your builds, that means a lot. Can't wait til next weekend when I get to hear 4+ of these again and see what the other super secret surprises are!!!

This thing will never leave my den. Too heavy! The box alone weighs a ton, then when I added the drivers I figured I should go ahead and put it in its spot. I listened the first night without the granite on cuz I wanted to seal it first. Sounded great as I've said. It's gotta weigh 300+lbs with the stone on it. I guess the granite isn't exactly straight since it fit better one way that the other when dry fitting, I should've marked it. When I went to test fit before applying PL, I was super tight both ways. Guess it's the poly and almost didn't get it out so I knew I had one shot getting it set or risk ripping the poly again or worse. Lined it up best I could, had to sit on it to set it in there. The granite overhangs by 1/16-1/8"...damn. Tipped it over on the back and bounced on it trying to force it down to no avail. It is what it is, still looks great to me and you have to get close to see it anyway. The other good thing is that the repaired top has never caught my eye doing stuff around the room. Kinda have to be at the right angle to see it. Overall I'm very happy with it.


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post #501 of 603 Old 10-25-2014, 02:48 PM
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Excellent job man!
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post #502 of 603 Old 10-25-2014, 08:50 PM
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Truth! Man for a first DIY build, you just beat the doors off of most people's maiden voyage to the netherrealm, including my own. excellent work good sir.
+1 to that! Seems like yesterday when I threw together my first DIY box. Ahhhh...the Wooly Mammoths... I remember them well.

They were absolutely chump compared to what you have pulled off here.

Mad props man!

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post #503 of 603 Old 10-25-2014, 08:54 PM - Thread Starter
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Thanks pops!


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post #504 of 603 Old 10-25-2014, 09:19 PM
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Epic! Makes me want to finish my Marty lol. Still haven't after months of use.
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post #505 of 603 Old 10-25-2014, 10:45 PM
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Epic! Makes me want to finish my Marty lol. Still haven't after months of use.
Yep...I gave up on finishing after about a week...been enjoying them since.
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post #506 of 603 Old 10-25-2014, 11:33 PM
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looks pretty nice in the pics from over here!




as a side note, ported rolloff at a different rate than sealed. as a result the "phase" can rotate at some frequencies which can sometimes create cancellations when ported and sealed are mixed. if you get a strange cancellation with both subs running, that may be something to look into.

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post #507 of 603 Old 10-26-2014, 05:58 AM - Thread Starter
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looks pretty nice in the pics from over here!




as a side note, ported rolloff at a different rate than sealed. as a result the "phase" can rotate at some frequencies which can sometimes create cancellations when ported and sealed are mixed. if you get a strange cancellation with both subs running, that may be something to look into.

What would that sound like?


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post #508 of 603 Old 10-26-2014, 07:08 AM
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What would that sound like?


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A few adjectives to throw around would be: anemic, thin, shallow...ymmv

Think cancellation (Like the Hulk punching the snot out of Thor in the Avengers movie).

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post #509 of 603 Old 10-26-2014, 07:23 AM
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It's easiest to measure. If you see a dropout in the frequency response when adding the sub, you'll want to try different crossover slopes. Mark Seaton did a tremendous job explaining how to use millisecond delays to determine best response with a sub. Especially read Mark's posts in this thread.

https://www.avsforum.com/forum/113-su...rk-seaton.html
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post #510 of 603 Old 10-29-2014, 06:04 PM
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Anything new to report?
Also did you ever get the triggered power strip? If so how's it working out.


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