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Is the behringer nx6000 good for tuba 60 with the lab 15?
I think it has enough power for the lab 15. And i want to ask if it is capable with lab 15?
In its price range the specificatiotns look pretty good and it has even low an high pass filter at 100 Hz. I want to play it without dsp for now bcs i dont hhave enough money now but in future i Will buy it but is it ôk to play it just with mixer and Behringer NX6000?
Thank you for your advice.

And what is the optimal width of the cable that i use to connect the speaker to the speakon connector?

The NX claims 1200 watts at 8 ohms, so it is probably ok (of course you can't trust any amplifier ratings from Behringer).

As far as cable - 12ga.

As far as not using DSP (limiter), please contact me so I can sell you new Lab 15s on a regular basis - because you most likely blow 'em every time you turn 'em on.

I'm not sure whether the model change from NU to NX made any notable changes in power figures or not, but the voltage numbers we were able to compile for the NU series amps were NU1000 = 31v, NU3000 and NU4-6000 = 49v, and NU6000 = 97v These numbers came from myself and CoronaOperator. So, they're numbers I trust to be fairly accurate.

The LAB15 loaded T60 needs to be limited to 60v. I'd much rather see you save money with a smaller amp and spend the saved money on an appropriate DSP solution. Bridge a smaller amp and use the appropriate DSP Limiter and High Pass settings would be the way to go in this case. Otherwise, 97v without any protective DSP features would very likely damage LAB15's. 60v into a 6ohm nominal load is 600w. 97v is 1568w... almost 1000 more watts than they are designed to handle in the T60. I'm fairly certain the NX series amps are rated for 2ohm stereo/4ohm bridged operation, so you could bridge and still run up to 2 cabs on the single amp. Get yourself a secondhand Driverack and an NX3000 (or equivilent) and you'll be good to go (Even the NX1000 would likely do well at putting a smile on your face too)

I believe it's been said here that even brickwall limiters aren't guaranteed to protect drivers from the up to 10x transient voltages that bridging can supply.

Rich4349 wrote: ↑Sun Jun 27, 2021 9:49 am I believe it's been said here that even brickwall limiters aren't guaranteed to protect drivers from the up to 10x transient voltages that bridging can supply.

If the bridged voltage is the same as unbridged voltage - the risk should be the same. I've bridged my three sub amps for 10 years with never a blown driver. But, limiting is a necessity. It has allowed me to use cheaper, lower powered amps and use one amp for every two subs, spreading the load and guaranteeing that I won't lose everything should one amp go down.

i will go with the nx6000 and dbx driverack pa2 and how do i set up the dsp?

holzboss wrote: ↑Wed Aug 04, 2021 1:42 pm i will go with the nx6000 and dbx driverack pa2 and how do i set up the dsp?

You'll need a volt meter. Get everything setup and download a 40hz test tone to your iPad, phone, or laptop. You'll run that through your mixer to the PA2, then to the amp. You'll test the voltage with the amp running wide open with no speakers attached. You'll then use the limiter in the PA2 to adjust the voltage down to the limit allowed in the plans. At that point -slam the master fader all the way up and see if the voltage goes past your limit on the volt meter. If not, you've got it set.

When you get everything in and ready to go - holler back and we can give you detailed instructions.