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BassThatHz Theater Build - Page 17

post #481 of 730
You don't need to know the amps if you knew the resistance.
post #482 of 730
Thread Starter 
Quote:
Originally Posted by yelnatsch517 View Post

What about the amps. How did you measure the amperage?

I have an amp clamp, that would probably be a bit more accurate.

watts = amps x volts
But here I used volts, and assumed nominal resistance.
watts = volts^2 / ohms
post #483 of 730
Thread Starter 
Quote:
Originally Posted by mjaudio View Post

Is that a FTW-21 or the Mael-X?
How does the 21" compare to the LMS Ultra?

The Ultra seems to have better highs (>40hz) and less distortion and a more linear response to signals in regards to excursion, and it can play longer loudly without thermaling (as if one would need to). And what I would coin, better "dynamic expression".

The 21's can handle hotter signals more safely (per-se) and gets a touch louder in the ULF region (albeit with more harmonic distortion).

I'd bet that most people would be hard pressed to tell the difference (in theory).

I'm sure you'd be happy with a quad or octal configuration of either, especially in an IB.
Neither are "bad" woofers (*if* you give it the power it needs).
post #484 of 730
Thread Starter 
I found a 12,000BTU split-AC /w heat pump for my rack.
My rack is probably generating 10,000BTU. The thing is like an oven. After 1 hour it's so hot, it's like death in there (and I like my air a few degrees above room temp.) eek.gif

It's so well insulated that once you get heat stuck in there it never leaves, so far it seems to be blocking the sunrays well though (time will tell as it gets even hotter outside).

Conversely, I should save on the heating bill in the winter biggrin.gif
post #485 of 730
Thread Starter 
Bad news and good news.
I'm "sort of" glad I cancelled the XSP-1, turns out they are investigating an issue in the power supply board at the moment.
It's a new product, it just came out in November,so they haven't sorted out all the gremlins yet.

I will reluctantly continue to wait until I hear news from them indicating a proper resolution.
rolleyes.gif

Besides, I need to use this time to save more money to complete other area's of my theater.
Such as Air Conditioning biggrin.gif
post #486 of 730
Thread Starter 
Here is Living Dead Girl on the Ultra's.


Bass Mekanik in B


Bass I Love You
post #487 of 730
Thread Starter 
Here's a vid of 120db @ 16hz with 33kW.

MOAR POWAH!!!!!!!!!!! LOL biggrin.gif


post #488 of 730
Thread Starter 
Got a beer fridge. Black used GE. But _hit it was only 99cents! tongue.gif


post #489 of 730
That's a cold ass honky. I'll jock your grandpa's style.
post #490 of 730
^ lol
post #491 of 730
Thread Starter 
Here is my most favorite song, been listening to it for like 8 years now.

It has got like a dozen people singing it, with synths and bass and powerful mids and such. Needless to say it takes quite the system to resolve it in a soothing characteristic. Not an easy task.

Not sure why I like it, I just do. I suppose it reminds me of death, if I had to find a phrase to explain it.

Depending on the beefyness of your system, headphones may be required.




Live rendition of it:

Edited by BassThatHz - 5/12/13 at 9:58pm
post #492 of 730
My only question is about the wattage. It seems your main focus is on how much power you can use. A goot set of horn mains and subs and your power requirement dropps considerably with less heat and less distortion.
post #493 of 730
Thread Starter 
Quote:
Originally Posted by chambers1517 View Post

My only question is about the wattage. It seems your main focus is on how much power you can use. A goot set of horn mains and subs and your power requirement dropps considerably with less heat and less distortion.

AC isn't optional as running the popcorn maker in the summer time (even with everything else off) still generates more heat than is tolerable.
So with AC, the heat generated is no longer a huge deal.

I ran my system at 120db average for 30 seconds, and I already felt the onset of hearing damage, so it can already sustain levels that are beyond work-safe or commonsense-safe.

I'm sure you've seen the THD charts of LMS-U's before, these subs don't generate any (reasonable) audible distortion, so I don't need to target any lower distortion than that.
As far as voicecoil heat goes, I don't have that problem on this property either, because Seal Team 6 will show up to give me a noise ticket and chased with pitchforks down the road before my subs reach 25% excursion average or thermal capacity, and well after irreversible hearing damage sets in.

I feel the biggest limitation in my system as of today is actually my pre-amp (until proven otherwise); and once I upgrade that guy, if the end results are what I'm anticipating, it could be the last upgrade I ever need (potentially biggrin.gif).

Once the pre-amp is beefed up to world-class levels, then the weakest link will likely fall upon my B&W 803 LCR. I'll jump off that bridge when I get there.
post #494 of 730
I want to try out that song on my system but I want the legit version, not live. Anywhere to get it other than itunes as I'm a supreme mac hater lol.
I liked it to. It reminds me of Arcana, if you've never heard of them, check them out.
post #495 of 730
Thread Starter 
Quote:
Originally Posted by N8DOGG View Post

I want to try out that song on my system but I want the legit version, not live. Anywhere to get it other than itunes as I'm a supreme mac hater lol.
I liked it to. It reminds me of Arcana, if you've never heard of them, check them out.

You can get it here:

http://www.amazon.com/Winter-What-Never-Were-After/dp/B008LFKEV6/ref=sr_1_4?ie=UTF8&qid=1368578505&sr=8-4&keywords=mum+Go+Go+Smear+The+Poison+Ivy

I hate mac's too, we use RedHat Server and Windows Server at work; we run multi-billion dollar software systems off those. You won't see a single mac product in our data centers.
Edited by BassThatHz - 5/14/13 at 5:58pm
post #496 of 730
Thread Starter 
I nearly vomited, 133db@20hz for 4 minutes at a time, for like 2 hours. Me no feel so good. Belch, YEEUPPP. Must assimilate, Must adapt! Circuits, Activated! biggrin.gif
post #497 of 730
Thread Starter 
Here's some Metallica on 33kW.

I've finally fully optimized the treble by relocating some acoustical wedges, apparently I was getting some reflections off my front wall (behind the screen), I isolated the channel's treble separation with the wedges from not hitting the center of the front wall and now it is much better, it is finally the way I had it sounding in my previous room.
It's like a 10% difference, I wasn't totally happy with it because I knew it could do better, and now all is good.

post #498 of 730
have you thought about replacing your mains with something better before replacing your electronics?
post #499 of 730
Thread Starter 
Here's 7hz @ -13db from clipping.

Quote:
Originally Posted by brian6751 View Post

have you thought about replacing your mains with something better before replacing your electronics?

The SEOS tweeters are dirt cheap: $150 for a pair. I'll definitely have to buy me a set just to see what they can do (or all 7 if good).
Since Emotiva is working to fix the PS board issue with the XSP-1 design, it looks like I probably will have the SEOS's here before they even get their butts in gear.
post #500 of 730
what are you going to match the horns to? youll need more than just them. there is a really good closeout kit available right now.

http://www.diysoundgroup.com/waveguide-speaker-kits/bwaslo-15-kit.html

of course, there are many other designs as well with many more coming. im building a pair of Tempests with Acoustic Elegance TD12M woofers. im also going to build a pair of those closeout ones as well just because they are so cheap
post #501 of 730
Thread Starter 
I will hijack my B&W's by taping into and disconnecting the existing tweeters. It has a 4khz XO.
If I find that has a "limitation", there is a Plan B.

There is only two ways this can turn out:
A) I will love it.
or
B) I will find it honky/bright/distorted sounding; at which point they will be come my new "party" tweeters and I'll have to build some DIY-mains for them.

Only time will tell.
post #502 of 730
That's not a good way to do it. You can't just swap in a compression driver and a horn.
post #503 of 730
I agree, you need a proper crossover for the CD and horn to your drivers and better off getting the whole kits.
post #504 of 730
Thread Starter 
Installed a magnetic screen today. It works ok. Might have to beef it up with more magnets. Not neo's though, I want it to open eek.gifbiggrin.gif
post #505 of 730
Thread Starter 
Why not, what will happen?
post #506 of 730
You could do it but it won't sound as good as it could so you will be comparing a proper final product in the B&Ws and a not so proper product. You are setting up for a horn to fail from the beginning so don't bother. You need someone to blind test you with a SEOS speakers vs your speakers and then see what is what.
post #507 of 730
You could do it but it won't sound as good as it could so you will be comparing a proper final product in the B&Ws and a not so proper product. You are setting up for a horn to fail from the beginning so don't bother. You need someone to blind test you with a SEOS speakers vs your speakers and then see what is what.
post #508 of 730
Thread Starter 
It would cost me about $2000 to upgrade all my speakers to the full SEOS kits, and a lot of work on my part to assemble it all together; all of which I'd have to commit to blindly without hearing it. hmmm....
However that would make a 360-degree field of consistent sound in movie-mode (and be louder too of course).

What to do, what to do! cool.gif

Considering/assuming that the SEOS's are even MORE efficient at bringing out the details/flaws in the recordings, and considering that even my current speakers are still limited by my Emo UMC-1, then I really do have to upgrade to the Emo XSP-1 firstly.

I've heard the B&W 800 series on Classe 800 equipment and ever since then I've been trying to replicate that performance for a mere fraction of the cost.
I have tried (in pure bypass mode) several yamaha AVR's, Rotel Pre-Pro's and Emo Pre-Pro's, none of which match the quality of the Classe gear. It's like a +20% quality gap.
So the XSP-1 and XMC-1 is basically my last hope, and by the online review AP measurements taken, seems to have serious potential of being on-par, or at least near-par.
So that should close the gap of the electronics being the weakest link in my system; at which point who knows what the next weakest link might be. Probably the B&W's inability to go beyond 105db; especially above 3khz.
post #509 of 730
Every time I open this thread.. my heart fills with joy.. and my left ass cheek begins to hurt due to my wallet flailing in pain..


Ahh hopefully I'll get the chance to have a space, the time and the money to do what your doing here. It may not be the fanciest or most expensive thing I've seen, but for whatever reason im super impressed.
post #510 of 730
Thread Starter 
Quote:
Originally Posted by Shady195 View Post

Every time I open this thread.. my heart fills with joy.. and my left ass cheek begins to hurt due to my wallet flailing in pain..
Ahh hopefully I'll get the chance to have a space, the time and the money to do what your doing here. It may not be the fanciest or most expensive thing I've seen, but for whatever reason im super impressed.

Here is the most expensive sound system I have ever seen a forum member actually own.



B&W Shells powered by $60,000 worth of electronics. About $200,000 in total.

Just his front speakers alone cost as much as my entire system, room included. eek.gif

Sad to see all that in a space with no acoustical treatments, in a room that isn't design for sound at all, not even symmetrical, just a joe-normal room. LOL, probably sounds poop-ish. rolleyes.gif
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