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RS485! interesting. Was your termination resistor was between A and B?

Test it whit a function generator with square waves and a oscilloscope, the square waves must always have the same shape independent of the frequency , than you have the right resistor.

i asume about 1800 watt max

@@sitecsolutionsbelgium3907 thanks, do you know something about nx 6000? is it much different than inuke 6000?

I tested the amp and it gives +-450watt rms in burst mode 1Khz for about 1 min constantly 8ohm, The limiter is different than the inuke, its a zero attack digital forward filter and the limit function kicks in like a compressor where the threshold and slope varies across the signal level it detect. If you go for constant sinewave signals, the signal slope's down, but signal testing and musical signals are 2 different aproaches. In my opinion this amp do the job very well for a very cheap price, but indeed, don't compare this amp with very expensive one's.

So its is 450w rms per one channel

Hi, the nx3000d should deliver +-1500 watt rms bridge-mode 8 ohm and the limit light actually kicks in real fast, but that's normal because it has an advanced zero attack limiter who works like an normal compressor with variable threshold and compression ratio, the higher the input the more aggressive the limiter kicks in. That is why you can't get these amplifiers clip, the digital circuit is so good that it protect amazingly well the spikes in the signal. I had never seen this before in these cheap amplifiers, only the expensive ones do this, so Behringer well done!!

Did you make the cabinet yourself for the speaker above, and what are the dimensions. I see you have an FS of 26Hz so below that would be problematic for the speaker and no significant SPL would be achieved. Normally with the amplifier you say the nx3000d you can blow up the speaker if its not damped enough. A SPL of 86 db/w/m is also low so don't try to achieve the same SPL levels of very expensive subwoofers with high spl rates, if you want to play the same spl levels related to a 96 db/w/m speaker you need to put 100x more power for the same SPL level, so think twice when you buy a speaker. I have a electrovoice speaker with an SPL of 102db/w/m and with 30watt Rms the whole house shivers.On stage with 600watt RMS on it , you get the kick of the bass drum rely in your stomach. It's not always the amplifier who's responsible for bad sound :)

@@sitecsolutionsbelgium3907 www.manualslib.com/manual/293710/Mtx-Thunder-T8515-44.html?page=3#manual Thank you very much for the help, the drawer I have made is the same that recommends the mark in the manual that is in the URL. Also make a 100L drawer with dual port tuned to 33hz. The current configuration is a b115d mp3 beringuer speaker that sends the signal to the nx3000d amplifier. How often would you advise me to make the subwoofer work well? I don't mind making a new box

Hi, i checked the site of MTX and verified the S&T parameters in speaker software and the designs of them are safely chosen and ok, but you can even go deeper, but than you reach the xlimit of the speaker and the danger zone if you don't know what you'r doing with cutoff frequency's especially for vented enclosures.The max spl of this speaker is about 120dB/1m 600 watt rms with the designs from MTX. The safest way to go is a closed box , and the loudest is the vented enclosure (+3db). Good luck;

@@sitecsolutionsbelgium3907 Thank you very much for the help, I am very grateful to you! I have several TH-cam videos of my 8515 for you to see how it sounded in the enclosure that I made of 100L / 33hz th-cam.com/video/yu8GR6n35Mg/w-d-xo.html , there it moved with a kicker amplifier 945w rms at 2ohm

If you want the full 1000watt rms to your speaker you should buy the nx6000 this Amp can deliver 1500 watt in 8ohm so you have plenty of headroom and you don't need to push your Amp to the limit

Sitecsolutions Belgium thank you for ur advised sir, fortunately i already got, (nx300) so im planning to use it now on mid hi 400w x2 in parallel loads, 🔈

Hi, for using these amps for subs you should use an external crossover or buy de nx3000d who has a digital xover inside. Consider also that these amps are used for PA outdoor apllications where the lowest reachable freq is about 30Hz so for hifi applications who will reach lower than 20Hz it is not the way to go. For driving subs until 30Hz/24db/okt HP , wich is very low for PA applications outdoor, these are amps good, but its all about the way you EQ your mastering in the mixer, you can get impressive sound with these things but its the way you do your mastering, (shit in =shit out) and measure your cappabilitys of the speakers, a big mistake that many people do, is try to get the lowest bass out of the subs who can't deliver it because of the speaker and cabinet configuration. Most of them can't reach 30hz with good SPL , check it before you push your speakers and amps to the limits

@@sitecsolutionsbelgium3907 ok tnx good to no my be I should but a 2400 watt plate amp by Daytona off parts express ? And I'm using a sundown zv3 18 in sub oh and this if only for music 27hz up to 80

These are PA amplifiers and I use them never lower than 30Hz because subwoofers with this power handling performance don't like this, most of the speakers have a low cut off region about 30Hz otherwise they just move a lot without giving significant acoustic output

zrken these amps don’t push nearly the power they say they do. This thing can’t even lift my 500rms watt sub at 2ohms

@@doskoreanitos2588 witch speaker cabinet are used, i never use these amps below 4 ohm ,because if you know something about the electronics in amplifiers than you should know that most of the amplifiers above 500 watt have difficulties to throw the amperes in the speakers, even the expensive ones have trouble to give high power in 2 ohm, don't push these things to the limits in current, just the very expensive ones can do the job like crown, L'acoustics, qsc but than you need to give a lot more money, buy 2 cheaper amps and you can do the same. In 4 and 8 ohm they give almost the power they say in the manuals but in 2 ohm they struggle with the amperage's, that's right

Sitecsolutions Belgium ahhhh that’s really good to know!! And you seem to know the ballistics so I believe your credibility. I appreciate your help. So it seems as though my strike on the behringer inuke nu12000 that puts out 3200 max at 4ohms per speaker was probably a better move?

@@doskoreanitos2588 , in the early days i made my own amplifiers and making them stable at 2 ohm was quit a challenge , just for giving the high currents, was most of the time a problematic issue, so we stuck on the 4 ohm capability, and now these days with the class D amplifiers who can deliver high currents through their mosfets seems to struggle also , not because of the current, but the power supplies can't make it happen when high currents are wanted. If you want high current power supply's we should stick to the old toriodal transformers instead of the high frequency switching power supply's who also struggle with low frequent high power currents.

Thanks for measuring this! dont suppose you could do 2ohm measurements as well?

hi my man so i have a DD715 1200watt RMS subwoofer i want to run this amp at 4ohm on it so my question is 1.)how much power does the amp have bridged? and have you tested this or not at all? 2.)Will the sub survive a few hours of jamming cause 1500-1800watts seems fine at 4ohm for my single sub.

Thanks a lot 🙏

good video, but you have not shown it with wrong resistance, what happens if you put 200 ohms? or 500

@@EvillNooB , with wrong resistors you could have a breakdown of de shape (square waves), with the correct resistors the shape will be always good