Alan Star wrote on Thu, 23 November 2006 01:18 |
Crown iTech 6000 I run 2 labhorns per channel in parallel. It may be interesting to note that on the front display of the iTech the monitor feature shows a loading of 3 ohms per channel in the above configuration. Sometimes it will flash to 2 but mostly says 3... for what it's worth. If I could afford another iTech I think i would get another and run one box per channel. |
Kit Hannah wrote on Wed, 06 December 2006 18:10 |
We're trading in the crowns for some Powerlights. Tired of the weight, and come to find out today that they blew up 4 of our 8 labs. (Dual hornlodaded lab cabs). We just realized today that the barebone cabinets we purchased last year were wired in series, not parallel. I guess we assumed it was fine. It's a sperate access pannel to see the wiring, plus everything is coverd by shrinkwrap. never had any reason to look, finally did today. Looks like we might have been significantly under powering them, causing 4 labs to blow - and it was random, so it looks like some of the labs held up, some didn't. Sucks, but it happens. |
Ivan Beaver wrote on Wed, 06 December 2006 15:28 |
It would not have been the underpowering that blew them. If you are simply thinking that the amps would not deliver the rated power to them, then you are confused with the whole "underpowering issue". The reason that underpowering is blamed for "blowing" loudspeakers is when you run the amp into clipping, and that is what is blowing them-not the actual power. If you run less than rated power to a speaker that is a very good thing, as long as you do not clip it. Now if you were clipping the amps and thinking that they were wired in parallel, then there is a different type of confusion and you deserve the blown drivers. Sorry. And before you blame the amps you have to determine the REAL cause of the reason the loudspeakers no longer work, there could be other issues that caused them to break-not necessarily "blow" from the power that is applied to them |
Kit Hannah wrote on Thu, 07 December 2006 07:59 | ||
Maybe the amp is showing 3 ohms because you have 2x 6 ohm labs run in parallel? Just a thought... |
Sean Tan wrote on Sun, 17 December 2006 01:05 |
Hi all, Been lurking around here for quite a while, planning to build a couple of Labs next year. One thing thats been bothering me is how to go about powering them. Many people report bridging one amp per LABsub, with good results. To my understanding, one Lab has two 6ohm drivers wired in parallel, presenting the amp with a 3ohm load, nominally rated. My question is, if the amp is running a 3ohm load while bridged, wouldn't each channel "see" half that impedance (1.5ohms)? Correct me if I'm wrong, but isnt that load below what most amplifiers are designed to drive? Cheers Sean |
jeffhtg (Jeff Kenney) wrote on Mon, 03 November 2008 22:17 |
So I've been running 8 labs for few years now. |
Mac Kerr wrote on Tue, 04 November 2008 14:41 | ||
If you have been running these for a few years now, why didn't you answer this question in April of 2004 when it got asked? Even the recycling of this question was 2 years ago. Why dredge it up a third time? Mac |
Dave Yorke wrote on Wed, 23 September 2009 09:53 |
FFA 8.0 - 2 labs per channel. sounds bloody amazing... lightweight and clear. we own 8 subs in all but i need another amp. so far no problems with the subs, due to limiting. |
Silas Pradetto wrote on Thu, 24 September 2009 16:37 | ||
Prepare for Mac's wrath... |
Eric Hassler wrote on Thu, 24 September 2009 18:54 | ||||
I understand it's an old thread, but isn't this information still useful? What's worse, starting a new thread to talk about the same info, or bumping an old thread to add some info? I guess it's a matter of opinion. |
Silas Pradetto wrote on Thu, 24 September 2009 21:29 | ||||||
It'd be far more useful if I knew what an FFA 8.0 was... (google isn't helping this time) |
Eric Hassler wrote on Thu, 24 September 2009 23:45 | ||||||||
I did a bit of searching and found this: http://www.noisecontrolaudio.com/products_ffa5000.html |
Silas Pradetto wrote on Thu, 24 September 2009 23:13 | ||||||||||
Well I'm glad I wasn't missing anything... |