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View Full Version : Rob Array meets Black Label Society



thylantyr
01-11-2006, 12:40 AM
I got my new camera to record a cheap video of
the Rob Array in action {NSB + PT2} array. Video
quality is poor, but it shows what I've been telling you
about it's SPL capabilities.

DVD now playing ..... Black Label Society ....
Radio Shack SPL meter says ................ >126dB[c] peaks ... ~120dB[c] midrange at the listening position ....

http://home.pacbell.net/lordpk/misc/SPL1.AVI

The microphone on the camera is over-loaded and distortion is recorded on the video. Rest assured, the
music is nice and clean ..........

P.S. There is no woofers in the room. This output is being
generated from an array of 4" 5 watt speakers that cost
49 cents each driven by 3400w/ch ....

/muhwahahahaha :D :p :bun:

P.S. I only had it turned up 75% ... and the EQ on to tame the midrange output :)

IamDeMan
01-11-2006, 12:37 PM
Excellent! Of course mine won't come near that, as I will only be driving them with a 110Watt/chan Yamaha Receiver.

thylantyr
01-11-2006, 12:45 PM
I can hit those SPL numbers with less power but the amplifiers are clipping
occasionally and distortion rises. By using the bigger amps the sound is clean
at high SPL. You don't realize how loud it is until you leave the room for 2 minutes
and walk back in, you think 'fvck this is loud, turn the ***** down'. You've been
to 'clean concerts' ? Where the sound is very good and loud but you aren't
annoyed, but later your ear rings to confirm the silent torture you didn't notice :cool:

I also drove the array with a LM4780 chipamp amp .. it works nicely but you don't
have the slam, but the sound is nice and it would work very good for a normal person.

joetama
01-11-2006, 03:13 PM
Wow, nice SPL but do you really need it that loud, I got some speakers that will do that, but they are a 12" and a 3" horn. And I don’t need that much wattage lol. Also, check out Lab.gruppen amps they are ultra clean and you can get the drive you need for all those transducers

brandontw
01-11-2006, 05:25 PM
Great times, Like i said, i cant wait to get mine working...infact ima go work on em right now!

thylantyr
01-11-2006, 05:43 PM
Wow, nice SPL but do you really need it that loud, I got some speakers that will do that, but they are a 12" and a 3" horn. And I don’t need that much wattage lol. Also, check out Lab.gruppen amps they are ultra clean and you can get the drive you need for all those transducers

I like concert SPL in home, but the trick is to make it very clean sounding.
I have EV's HP640 horns with DH1 drivers and other compression driver/horns.
I have used alot of proaudio drivers in my time and I like the stuff alot. But the
SQ from a pro rig can't compete with the line array SQ -> in home.

If it was that easy to get SQL in the home by just buying some compression
drivers and large horns mated to 12" midranges then my audio quest would
be cake walk, but the reality is... it's not as good in quality soundwise as
my demon desires. :)

I can hit high SPL with my horns too but the music is not tolerable. The
array I can listen to higher SPL with less fatigue.

I have QSC amps coming in, PLX for my big project. UPS just deliver another
one today... today is D-0ay for the jr. array, four PLX all bridged. I will post
pics later tonight. The tweeters will see double headroom, wonder what it will
sound like? // harr harr /evil

joetama
01-11-2006, 06:57 PM
Go for it man, QSC, Lab.Gruppen, and the old HH V800 amps are my favs. QSC amps are just so clean and bright without getting pushy. I guess you got the rig you need if you like high SPL, and I’m sure you neighbors love you for it lol.... What are you running as your pre-amp?

thylantyr
01-11-2006, 10:35 PM
What are you running as your pre-amp?

For the jr. whopper system or the future 6 dollar hamburger system ? :laugh:

I'm not a believe of audio voodoo as my electronics/audio experience has served me
well... that said, the big cash goes into speakers, then a massive power plant.
The environment sometimes can't be dealt with as you have to accept what you have, so the rest of the cash is whatever does the job without spending big coin.

Right now I have no sound issues using the $125 universal DVD player,
it plays everything well. That feeds my Roland M1000 mixer [$250], then feeds
the Behringer DCX2496 [$250].. the mixer is just used as a digital volume knob,
ie -> DVD player digital out -> Roland digital in -> DCX digital in -> DCX internal
D/A -> Amps.

I snagged the Roland to prove a point.. Can you hear the different between
this digital pathway vs. a pathway that has many A/D, D/A conversions?
I have it setup for all digital until it hits the output OR 5 conversion steps.
so far, nobody is able to hear a difference... rofl ...

I'd be happy with any Denon, HK, etc., receiver as the preamp feeding the
Behringer, all analog path. On the other hand, I do like the idea of maybe
getting a Parasound Halo preamp for $800 as it has XLR output at 8V that
would match the gain structure better. Either way, the cost is peanuts
when you look at the big picture.

You won't see me buying $10k tube preamps or CD players :p:
If the folks here took a trip to my house, I'd have them cured of their
audio voodoo .................. /hehe ... the line array slam would fix the
chemical imbalance in the head /./..... hehehe <--------------------------j/k
:nono: :*******:

joetama
01-11-2006, 11:31 PM
Do you like the DCX2496 cross-over? I have worked alot with the DEQ2496 and the DSP8024 EQs and their nice but they have their weird moments as with most Behringer gear. The D->A on it sounds nice and smooth.

thylantyr
01-12-2006, 03:24 AM
Do you like the DCX2496 cross-over? I have worked alot with the DEQ2496 and the DSP8024 EQs and their nice but they have their weird moments as with most Behringer gear. The D->A on it sounds nice and smooth.

For $120 you can get an old school boring analog crossover that only does
one trick.

But for $250 shipped you get all these features. {too many to list}
http://www.behringer.com/DCX2496/index.cfm?lang=ENG

If there is no DCX2496 and you want something good, the
the DBX is cool for double the cost or spend $1000 on Rane
or $3000 - $5000 on a DEQX system or $10k+ on a computer XO system.

$250 gets the job done. I really like the LR 8th order slope vs. LR 4th order,
it gave the line array a boost in SQ because I can run the tweeters much
lower in crossover point. I'm the only one taking PT2's down to 1.7Khz
whereas most other users will do 2.5 - 3.5khz using simpler crossovers.
As I sweep the crossover frequency I improve imaging at the lower crossover
point.

I run those NSB's at LR 8th order 65hz and I'm surprised at how much bass
I can get which keeping excursion low. /bonus

The next feature that I use is the programmable settings. I like to use the
parametric EQ to set different moods and I program those settings from
mellow [setting 1] to aggressive [setting 9] .. There is alot of preset storage
capability. For the line array here is an idea on what I do with it.

Lets say I feel like playing mellow tunes like Diana Krall and low SPL, I load
preset 1. It tames the midrange response, boosts treble and cuts alot of midbass
because the line array was design with a ported box tuned to peak high at 100hz. Sounds great.

Later, I throw in some Eagles and medium SPL, the sound is thin so I load
preset 4, 5 or 6 to see what sounds nice. There is less EQ as I load higher
numbers.

Eventually if i want to kill someone, I load preset 9 which is flat..

There is no reason why a speaker or sound system can't produce a different
sonic signature, people are too brainwashed into accepting one sound when
you can do much more with a $250 device like this.

I also add 15mS delay to one tower for a 'concert hall' effect. If the music
is mellow, 25mS is nice, but for Slayer the 15mS is better otherwise the sound
is slurred. /hehe

thylantyr
01-13-2006, 05:22 PM
I was playing the Modern Drummer Festival DVD and at that moment in time
Dream Theater was on and the kid next door {19 year old?} came over
and had no choice but to sit down and listen to the song. He's bass head
with vigin ears... after the song was done, I said "Time to play some punishment... " ... walks to get Opeth DVD .......... By this time he already
bailed the room and exited into the garage. /hehehe .. he didn't want to come back in fearing that it would be
crazier .... the power of suggestion!

Today my old boss from work {Rock N'Roll guy} is going to audition.. I'll keep
you posted on his thoughts. He has old school Klipsch speakers and use
to play in a band.

I can make this array more brutal on midrange with the coolant mod :) But that cost $100 for a bottle...