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thylantyr
01-24-2006, 06:37 PM
I'm officially a troll for asking a simple question on the pro sound forum.

Two links;

http://www.caraudioforum.com/vbb3/showthread.php?p=1834171#post1834171


http://srforums.prosoundweb.com/index.php/m/102006/11873/0///9947/?SQ=7b362d3193b5a3d17f8400c166b2526e

If you ever feel bad that you are not skilled enough in DIY audio, just
hang out there for a week and be amazed at how much you really know
vs. them :crazy: :)

squeak9798
01-24-2006, 06:50 PM
Should point them in the direction of the many car audio and home audio amplifiers capable of driving such loads.

Apparently PA is the only audio field that considers it "unnecessary".

JimJ
01-24-2006, 06:51 PM
:lmao:

I didn't know a 2 ohm mono load was so low :D

theCybe
01-24-2006, 06:56 PM
"in bridged mode."

Ricky616
01-24-2006, 06:57 PM
and i taught i was new to this

johnecon2001
01-24-2006, 07:09 PM
Are your only wiring options 2 ohms bridged? What about 8 ohms bridged. QSC has the PowerLite 6.0II that will deliver 4400watts into an 8 ohm mono load. It will deliver 7000 watts into a 4 ohm mono load. If you go into 2 ch mode you get 2200watts a side at 4 ohms and 3500 at 2 ohms.

http://www.qscaudio.com/products/amps/powerlight/powerlight.htm

johnecon2001
01-24-2006, 07:11 PM
:lmao:

I didn't know a 2 ohm mono load was so low :D


It is. In pro audio. Most drivers in PA are only SVC and many are 8-16ohms. Very few 4 ohm drivers (mostly subs). Also in pro audio, remember that each driver usually has its own amp channel so that you can properly delay and align each driver. So in essence a 2 ohm load in PA is a very low load. Usually we try to keep it at 4ohms.

thylantyr
01-24-2006, 07:20 PM
Given two choices over in that forum;

1. Run a low impedance loads {1 ohm stereo, 2 ohm bridged}.

2. Have *** with a shemale.

Which is worse for them ?

thylantyr
01-24-2006, 07:22 PM
Are your only wiring options 2 ohms bridged? What about 8 ohms bridged. QSC has the PowerLite 6.0II that will deliver 4400watts into an 8 ohm mono load. It will deliver 7000 watts into a 4 ohm mono load. If you go into 2 ch mode you get 2200watts a side at 4 ohms and 3500 at 2 ohms.

http://www.qscaudio.com/products/amps/powerlight/powerlight.htm


The issue is not about how to make the system work, it was a question
to find out who make a stable 2 ohm amplifier bridged. I know what my options are :cool: ... I want a reaction from ''' them ''' ...

thylantyr
01-24-2006, 07:31 PM
It is. In pro audio. Most drivers in PA are only SVC and many are 8-16ohms. Very few 4 ohm drivers (mostly subs). Also in pro audio, remember that each driver usually has its own amp channel so that you can properly delay and align each driver. So in essence a 2 ohm load in PA is a very low load. Usually we try to keep it at 4ohms.

I think the real issue is;

1. Users don't want heavy amps. Who wants to haul around many 150 pound
ampifier to a gig ?

2. Who wants a stacks of 4RU, 6RU or 8RU monster amps ..

3. Who has the AC mains to supply these monster amps?

So.. in the pro audio world it's better {ideally} to make lighter amps, preferrably
power programmable amps.. and you can't make a 1 ohm/ch stable amplifier
in a 2RU size that will play sine waves all day, you can probably make one to
play music only.

Hypothetical -> Lets say I have four 8 Ohm woofers in a stack, 70" tall.
2 Ohm load as all driver are in parallel. I don't see a reason to delay
the signal to each woofer being that they are close together in an array.

I could rewire this array for 8 ohms vs. 2 ohms but you loose array sensitivity,
that's not fun for the 'power user' like me who does this in the home, but
obviously not done in pro audio.

/harr harr

If I was doing DJ work and had my own stacks of 15's and made 1 ohm stable amplifiers
and the venue has AC mains to support this.. hell yes I would hook it up this way to punish
everyone.. show no mercy. :crazy:

squeak9798
01-24-2006, 07:43 PM
Given two choices over in that forum;

1. Run a low impedance loads {1 ohm stereo, 2 ohm bridged}.

2. Have *** with a shemale.

Which is worse for them ?

The *** with a shemale would never happen. Rather, they'd begin a never ending monologue about how a shemale has little utility, and that either a male or female would be infinitely better in function.

JimJ
01-24-2006, 09:11 PM
At least it's better than on AudioAsylum, where they would argue that in a blind ABX test, you'd never know the difference between the shemale and otherwise.

Followed by twenty replies saying they preferred *** with the shemale, although they concede to have no personal knowledge of it.

Of course.

:)

JimJ
01-24-2006, 09:11 PM
I should post pics of my sub-10 watt systems :D

I'd be eaten alive...;)

joetama
01-25-2006, 03:21 AM
We used to run 1 Ohm a side for some setups on a Crest 8001 and never ever ever had any problems. You could also drop a Series III 3500 QSC down way below its "rated" stable ohms point and drive the pants off it and it would just laugh at you asking for more. And same thing with let see QSC MX-1500a, MX-2000, H||H Audio V800, Crest 10001, could do it with a Clown (hm hm I mean Crown) but you might get a DC problem if you don’t watch. It goes to show the guys who think they have done everything and the guys who have done everything. Thank god I'm a 3rd generation experimenter with audio!! (NOTE: NOT RESPONCIBLE FOR FLAMING AMPLIFIERS, SPEAKERS, CABLES, OR POWER BOXES. EVERYTHING IS DONE AT YOUR OWN RISK)

thylantyr
01-25-2006, 12:32 PM
We used to run 1 Ohm a side for some setups on a Crest 8001 and never ever ever had any problems. You could also drop a Series III 3500 QSC down way below its "rated" stable ohms point and drive the pants off it and it would just laugh at you asking for more. And same thing with let see QSC MX-1500a, MX-2000, H||H Audio V800, Crest 10001, could do it with a Clown (hm hm I mean Crown) but you might get a DC problem if you donít watch. It goes to show the guys who think they have done everything and the guys who have done everything. Thank god I'm a 3rd generation experimenter with audio!! (NOTE: NOT RESPONCIBLE FOR FLAMING AMPLIFIERS, SPEAKERS, CABLES, OR POWER BOXES. EVERYTHING IS DONE AT YOUR OWN RISK)

The key is music vs sine wave testing. I did both and sine wave battered the amp
on an abnormal load.

Sine wave testing at 2.8 Ohm bridged blew the IGBT switcher transistors
on a burp, with clipping. But I play music all day with 0.8 Ohm tweeter load
in bridged, 2 Ohm midrange load. PLX doesn't complain.

joetama
01-25-2006, 04:35 PM
The difference between spikes in power and constant power. You either need to beef up that trany or add some redundency.

thylantyr
01-25-2006, 05:01 PM
The word trany and shemale all used on one thread - hehe