Hi guys, I have a inuke 6000 running a pair of behringer 18" subs, and a qsc 2450 running a pair of yamaha full range speakers. on my mixers output meter it goes from green to to yellow to red. I was at the club fri. running sound for a band and the meters where in the high part of the yellows. and the inuke's cliping meters were pegged the qsc was running normal. it sounded good. but am I going to fry the amp this way? i had to turn it down quite a bit to stop the inuke from cliping. when i first got the amp i tryed running the pair of subs on one channel and the yamahas on the other, and the amp would go from amber to red around the volume knobs, and cut out for a second. then back on then off again until i turned it way down it doesent seem to like a 4 ohm load . all speakers are 8ohm. any ideas? thanks
inuke 6000 clipping
- Thread starter carl brooks
- Start date
Re: inuke 6000 clipping
You're not"turning it down". You're adjusting the signal input level of the amp. It puts out its rated power regardless of the position of the knobs. The knobs simply regulate the incoming signal so you can keep it out of clip.
That said, different brands clip at different levels. They may also have differing input sensitivities. You have to read and understand the specs.
You're not"turning it down". You're adjusting the signal input level of the amp. It puts out its rated power regardless of the position of the knobs. The knobs simply regulate the incoming signal so you can keep it out of clip.
That said, different brands clip at different levels. They may also have differing input sensitivities. You have to read and understand the specs.
Re: inuke 6000 clipping
During normal operation, you should NEVER see clip lights. If you do, then you don't have enough rig for what you're doing. During setup, you could drive it just so that you see the clip lights flicker, but that's it. If your clip lights were pegged, you are doing it horribly wrong. Learn to fix it.
If you drive the amp too hard, it will shut itself of to try and protect itself. It's not that the amp doesn't like a 4 ohm load, it doesn't like what the user is doing to it.
During normal operation, you should NEVER see clip lights. If you do, then you don't have enough rig for what you're doing. During setup, you could drive it just so that you see the clip lights flicker, but that's it. If your clip lights were pegged, you are doing it horribly wrong. Learn to fix it.
If you drive the amp too hard, it will shut itself of to try and protect itself. It's not that the amp doesn't like a 4 ohm load, it doesn't like what the user is doing to it.
Re: inuke 6000 clipping
You do not mention a crossover? How are you processing the feed to the sub amp? Trim levels there.
JR
You do not mention a crossover? How are you processing the feed to the sub amp? Trim levels there.
JR
Re: inuke 6000 clipping
from what i have read , You need to start at the board and get everything adjusted to 0. it sounds like you are clipping at the board first and that IMO is whats making your amps peg out. google things about gain structure, That will help you out a lot. It did me.
Hope this helps.
from what i have read , You need to start at the board and get everything adjusted to 0. it sounds like you are clipping at the board first and that IMO is whats making your amps peg out. google things about gain structure, That will help you out a lot. It did me.
Hope this helps.Re: inuke 6000 clipping
i replaced a stolen qsc 2450 with the inuke i took a chance seeing that inuke is very lite. But the qsc performed great only clipping when i pushed the system hard. it blew a jbl 18" sub once. But anyway I run through a older loft crossover gains at 3/4 up. and the inuke gains all the way up. I played with the gains before but seemed like i was loosing alot of volume. I will try again. Thanks for the help
i replaced a stolen qsc 2450 with the inuke i took a chance seeing that inuke is very lite. But the qsc performed great only clipping when i pushed the system hard. it blew a jbl 18" sub once. But anyway I run through a older loft crossover gains at 3/4 up. and the inuke gains all the way up. I played with the gains before but seemed like i was loosing alot of volume. I will try again. Thanks for the help
Last edited:
Re: inuke 6000 clipping
Sweet I designed the Loft crossovers, about a hundred years ago......
JR
Sweet I designed the Loft crossovers, about a hundred years ago...... JR
Re: inuke 6000 clipping
ok, those "Gain Knobs" are not for gain. Back those down to about 3 o clock. your over driving your system by doing what your doing , if you dont have any limiting then chances are your on the way to blowing something. a lot of people go through this , but it can be worked out and your system will love ya for it. lol
ok, those "Gain Knobs" are not for gain. Back those down to about 3 o clock. your over driving your system by doing what your doing , if you dont have any limiting then chances are your on the way to blowing something. a lot of people go through this , but it can be worked out and your system will love ya for it. lol
Re: inuke 6000 clipping
Backing down the amp knobs will do nothing if the mixer output is then increased to make up for the lost level.
I find neither a gain nor a sensitivity spec in the NU manual.
Backing down the amp knobs will do nothing if the mixer output is then increased to make up for the lost level.
I find neither a gain nor a sensitivity spec in the NU manual.
Last edited:
Re: inuke 6000 clipping
Full story here: http://forum.speakerplans.com/behri...am-kxd7200-bench-tested_topic69202_page1.html
JR: Can you translate this into dBu@peak voltage? My audio math isn't that good...
Here is a quote from the guy 'teslaman' who did the famous inuke6000 tech review:
teslaman said:
Full story here: http://forum.speakerplans.com/behri...am-kxd7200-bench-tested_topic69202_page1.html
JR: Can you translate this into dBu@peak voltage? My audio math isn't that good...
Last edited:
Re: inuke 6000 clipping
I guess that says something for the design---------------------------
I have worked on (as in bench tech repaired) A LOT of gear over the years. But never had a single piece of loft gear come in for repair. It just always seemed to work
JR
I guess that says something for the design---------------------------
Re: inuke 6000 clipping
He needs greater output-NOT less noise.
At least that is the way I see it---------------
The only thing that turning down the gain knobs on the amp will do is to increase the dynamic range of the system a couple of dB max. I REALLY don't think increased dynamic range is of any concern in this case.
He needs greater output-NOT less noise.
At least that is the way I see it---------------
Re: inuke 6000 clipping
OK log math is additive so 42dB is the same as 40 dB (100x) times 2 dB (1.258x) so assuming he is talking about voltage ratio and not power ratio the voltage gain would be 126x. Now if he was talking about power ratios we're talking a lot more.
JR
OK log math is additive so 42dB is the same as 40 dB (100x) times 2 dB (1.258x) so assuming he is talking about voltage ratio and not power ratio the voltage gain would be 126x. Now if he was talking about power ratios we're talking a lot more.
JR
Re: inuke 6000 clipping
There is a 402, 403 and 602 on eBay for sale.
JR
Re: inuke 6000 clipping
Keep in mind those have to be 30 years old or more.
IIRC the 602 was switchable between 4 pole Linkwitz Riley and 3 pole Butterwoth, while the even older 402/403 were all fixed 3 pole Butterworth.
I suspect you can buy a more modern actual DSP used, for close to the price of those (surely tired) old soldiers.
Note how I didn't even put a knob on the frequency control so users couldn't mess with it after set up.
JR
Keep in mind those have to be 30 years old or more.
IIRC the 602 was switchable between 4 pole Linkwitz Riley and 3 pole Butterwoth, while the even older 402/403 were all fixed 3 pole Butterworth.
I suspect you can buy a more modern actual DSP used, for close to the price of those (surely tired) old soldiers.
Note how I didn't even put a knob on the frequency control so users couldn't mess with it after set up.
JR
Re: inuke 6000 clipping
I'm not JR but is this what you're looking for? http://www.sengpielaudio.com/calculator-db-volt.htm
Also see the Danley Acoustical Calculator Android app. It's still a little buggy but does some handy stuff.
I'm not JR but is this what you're looking for? http://www.sengpielaudio.com/calculator-db-volt.htm
Also see the Danley Acoustical Calculator Android app. It's still a little buggy but does some handy stuff.
Re: inuke 6000 clipping
Well, Yeah , i mean he has to start there first , Thats why i suggested to google gain structure.
Well, Yeah , i mean he has to start there first , Thats why i suggested to google gain structure.
Re: inuke 6000 clipping
So I was a bit bored and I drew up a thing on my friendly neighborhood whiteboard. Ignore the free field thing - the literature says half space, but it seems that it would apply in a club environment more or less.
It's crude but the interesting thing is that (assuming I'm doing my math right and have any clue what I'm talking about) you should be getting plenty of SPL from those boxes, such to the point where I'm questioning why you need so much that you're clipping the amps to get it. Now, I've assumed that you're using the B1800X-PRO subs in your case. Their literature suggests that the iNuke 6000 should be loafing around a bit.
So. Either I've screwed up or you're doing one of the following:
-Your crossover is set too high; the B1800X literature requests you crossover at 175.
-You've somehow provided the iNuke with WAYYY more voltage than it was designed to take in and need to cut that down.
-You've not taken the time to make sure your system's tops and subs are balanced with each other. I don't know what your tops are, but I'd be willing to bet that they do not operate at the same level as your [b-word] subs.
I dunno... something seems terribly wrong.
So I was a bit bored and I drew up a thing on my friendly neighborhood whiteboard. Ignore the free field thing - the literature says half space, but it seems that it would apply in a club environment more or less.
It's crude but the interesting thing is that (assuming I'm doing my math right and have any clue what I'm talking about) you should be getting plenty of SPL from those boxes, such to the point where I'm questioning why you need so much that you're clipping the amps to get it. Now, I've assumed that you're using the B1800X-PRO subs in your case. Their literature suggests that the iNuke 6000 should be loafing around a bit.
So. Either I've screwed up or you're doing one of the following:
-Your crossover is set too high; the B1800X literature requests you crossover at 175.
-You've somehow provided the iNuke with WAYYY more voltage than it was designed to take in and need to cut that down.
-You've not taken the time to make sure your system's tops and subs are balanced with each other. I don't know what your tops are, but I'd be willing to bet that they do not operate at the same level as your [b-word] subs.
I dunno... something seems terribly wrong.
Re: inuke 6000 clipping
Lets start with trying to find out what signal levels we are operating at here.
What is the name of the mixer and what does the meters show?
Given the sensitivity of the amp and knowing that mixers are often capable of putting out a signal level that is 24 dB above what the amp needs for full power, there is a lot of room for error here.
Lets start with trying to find out what signal levels we are operating at here.
What is the name of the mixer and what does the meters show?
Given the sensitivity of the amp and knowing that mixers are often capable of putting out a signal level that is 24 dB above what the amp needs for full power, there is a lot of room for error here.