NX6000DSP and 2 or 4 ohm drivers. - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 14 Old 10-26-2019, 07:12 PM - Thread Starter
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NX6000DSP and 2 or 4 ohm drivers.

Hey everyone,


So I purchased a NX6000DSP to power my dual sealed subs that I am about to build. I have been told that the 6000 is not 2 ohm stable so I purchased it with the intent on running it as 4 ohm. I have a few questions.


1. Do I purchase 2 ohm drivers that are can be configured to 4 ohm or just buy 4 ohm drivers?
2. If I get 2 ohm drivers, do they need to be dual voice coil 2 ohm?
3. How do I wire a 2 ohm driver to get 4 ohms?
4. How do I set up the NX6000 to get 2 channels at 4 ohms (one for each driver)?


Thank you to everyone who chimes in. I read these forums seemingly all day, but I still can't find the answers.
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post #2 of 14 Old 10-26-2019, 08:10 PM
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You can’t configure a 2 ohm driver for 4 ohms.

You can wire two 2-ohm drivers in series to present 4 ohms to the amp, but you’re halving the power, as you can’t bridge the 6000.

You can wire a driver with dual 2 ohm voice coils (DVC) in series to get 4 ohms.

So look for 4 ohm drivers, or DVC 2 ohm drivers. Or, you could also use 8 ohm drivers, you just won’t push the amp as hard.


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post #3 of 14 Old 10-26-2019, 08:15 PM - Thread Starter
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Quote:
Originally Posted by jevchance View Post
You can’t configure a 2 ohm driver for 4 ohms.

You can wire two 2-ohm drivers in series to present 4 ohms to the amp, but you’re halving the power, as you can’t bridge the 6000.

You can wire a driver with dual 2 ohm voice coils (DVC) in series to get 4 ohms.

So look for 4 ohm drivers, or DVC 2 ohm drivers. Or, you could also use 8 ohm drivers, you just won’t push the amp as hard.


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So since the NX6k delivers 2 x 3000 Watts into 4 Ohms (form the specs), so if I get 4 ohm drivers, would i be getting 1500 watts each channel?
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post #4 of 14 Old 10-26-2019, 08:17 PM
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No, 3000 watts each at 4 ohms.


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post #5 of 14 Old 10-26-2019, 11:45 PM
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No way that amp is outputting 3000w per.

Automation: Alexa- Harmony Hub- Wemo Dimmer Switch- Wemo Smart Plug BatCave: SY Triple Black
Video Image: JVC RS500- Sony UBP-800X- Chromecast- 125" wide 16x9 white over black spandex screen
Audio: 5.2.4 Marantz SR7011- (LCR) Stage Right 15" PA- (Surrounds) (4) BIC FH6-LCR- (Atmos) (4) Dayton Audio B652 6-1/2-Inch- (Subs)2 23ishcuft ported HS24s 14-15Hz tune- 4 PA460 in ported cabs 40Hz tune- FP20000Q- 2 Sanway FP10000Q- Crown XLS1500- . To be continued...
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post #6 of 14 Old 10-27-2019, 05:41 AM
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Older model test bench here - https://forum.speakerplans.com/behri...opic69202.html
Headline numbers for rms - Behringer:
1.37kW into 8 Ohms, 2.05kW into 4 Ohms for full-range or mid-top duty
1.16kW into 8 Ohms, 1.80kW into 4 Ohms for Bass duty

The 6000 isn't rated for 2 ohm so you need a 4 or 8 ohm load per channel.
Which drivers are you looking at. If dual coil then you do have wiring options and you should be looking for at least a dc 2ohms to configure to 4ohms.
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post #7 of 14 Old 10-27-2019, 05:53 AM - Thread Starter
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Quote:
Originally Posted by jobby01 View Post
Older model test bench here - https://forum.speakerplans.com/behri...opic69202.html
Headline numbers for rms - Behringer:
1.37kW into 8 Ohms, 2.05kW into 4 Ohms for full-range or mid-top duty
1.16kW into 8 Ohms, 1.80kW into 4 Ohms for Bass duty

The 6000 isn't rated for 2 ohm so you need a 4 or 8 ohm load per channel.
Which drivers are you looking at. If dual coil then you do have wiring options and you should be looking for at least a dc 2ohms to configure to 4ohms.

Either:


FI Car Audio: https://ficaraudio.com/product/ht-3/ Single 4 Ohm version
PSI Audio: https://psicaraudio.com/product/18-platform-3/ Dual 2 ohm version
Stereo Integrity: https://stereointegrity.com/product/hst18-18-subwoofer/ Dual 2 Ohm version
Ultimax 18: Dual 2 ohm
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post #8 of 14 Old 10-27-2019, 07:44 AM
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If I were in South Florida and considering a SI sub, I'd drive up to NC and pick up their 24" for $800.

Theater: JVC RS540U, 2.35:1 142" screen, Onkyo RZ1100, Panasonic UB820, Outlaw Audio M2200 Monoblock x3, Klipsch RF7II, RC64II, RS62II, 5800CII x4 Atmos, PSA V3611 Subwoofer x2.
2 Channel: Parasound P6, Parasound A23+, Rega Planar 6 with Ortofon 2M Bronze, Klispch La Scala II, Behringer NX6000D, B&C 21DS115-4 powered Devastator V1 x2.
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post #9 of 14 Old 10-27-2019, 08:06 AM - Thread Starter
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Quote:
Originally Posted by Kothoga View Post
If I were in South Florida and considering a SI sub, I'd drive up to NC and pick up their 24" for $800.

I've already been in contact with them.
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post #10 of 14 Old 10-27-2019, 08:09 AM
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Quote:
Originally Posted by ratm View Post
I've already been in contact with them.
So jealous! Wish I was that close.

Theater: JVC RS540U, 2.35:1 142" screen, Onkyo RZ1100, Panasonic UB820, Outlaw Audio M2200 Monoblock x3, Klipsch RF7II, RC64II, RS62II, 5800CII x4 Atmos, PSA V3611 Subwoofer x2.
2 Channel: Parasound P6, Parasound A23+, Rega Planar 6 with Ortofon 2M Bronze, Klispch La Scala II, Behringer NX6000D, B&C 21DS115-4 powered Devastator V1 x2.
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post #11 of 14 Old 10-27-2019, 09:58 AM
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Quote:
Originally Posted by ratm View Post
1. Do I purchase 2 ohm drivers that are can be configured to 4 ohm or just buy 4 ohm drivers?
You'd have to get twice has many 2-ohm SVC drivers and wire them in series. (Which is a good thing, or at least not a bad-thing per se.)

*or 4 times as many 2ohm DVC drivers, coils wired in parallel 1-ohm, and series'd to 4-ohm.

The more cones, the better the bass. (So long as the total-power remains constant.)

4-ohm drivers aren't as future-proof because they can only be wired in pairs of 2-ohm or 8-ohm... or you'll be forced to keep them as singles forever (or forced to buy 2 pairs to get dual-4ohm in multiples.)

Quote:
Originally Posted by ratm View Post
2. If I get 2 ohm drivers, do they need to be dual voice coil 2 ohm?
If powering each from a channel from a 6k. Yes.

Quote:
Originally Posted by ratm View Post
3. How do I wire a 2 ohm driver to get 4 ohms?
If it is a DVC, they coils would be wired in series. (Google Image it.)

Quote:
Originally Posted by ratm View Post
4. How do I set up the NX6000 to get 2 channels at 4 ohms (one for each driver)?
Set the amplifier into discrete dual mono or "stereo" mode.
The other modes are for 2-way speakers or signal sharing between channels.

Quote:
Originally Posted by ratm View Post
So since the NX6k delivers 2 x 3000 Watts into 4 Ohms (form the specs), so if I get 4 ohm drivers, would i be getting 1500 watts each channel?
Isn't the inuke fused at 12A?

In any case, a single 15A circuit into two channels is 7.5A x2, or 900w x2 long-term power, and after factoring in amplifier inefficiency the actual usable power drops to more like 450-855w x2 (depending on the amplifier purchased).

If fused at 12A you'll get 360watts less.
If the line voltage sags, even less watts.
So in actual reality, you won't be getting much "real" power at-all. Such is life!

The inukes don't have very many capacitors either, so it's burst-rating is extremely limited and weak.

Nor does it have PFC, so it just draws large nasty spikes of juice from the grid, which cause additional volt-sags and strain on the pole transformer and house wiring / breakers. Which may or may not be a problem.

To get more power would require more breakers and more amplifiers (and more drivers),
or beefier breakers and beefier wiring and a beefier amplifier and beefier woofers. No free lunch...

Last edited by BassThatHz; 10-27-2019 at 10:07 AM.
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post #12 of 14 Old 10-27-2019, 12:09 PM - Thread Starter
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Quote:
Originally Posted by BassThatHz View Post
You'd have to get twice has many 2-ohm SVC drivers and wire them in series. (Which is a good thing, or at least not a bad-thing per se.)

*or 4 times as many 2ohm DVC drivers, coils wired in parallel 1-ohm, and series'd to 4-ohm.

The more cones, the better the bass. (So long as the total-power remains constant.)

4-ohm drivers aren't as future-proof because they can only be wired in pairs of 2-ohm or 8-ohm... or you'll be forced to keep them as singles forever (or forced to buy 2 pairs to get dual-4ohm in multiples.)


If powering each from a channel from a 6k. Yes.


If it is a DVC, they coils would be wired in series. (Google Image it.)


Set the amplifier into discrete dual mono or "stereo" mode.
The other modes are for 2-way speakers or signal sharing between channels.



Isn't the inuke fused at 12A?

In any case, a single 15A circuit into two channels is 7.5A x2, or 900w x2 long-term power, and after factoring in amplifier inefficiency the actual usable power drops to more like 450-855w x2 (depending on the amplifier purchased).

If fused at 12A you'll get 360watts less.
If the line voltage sags, even less watts.
So in actual reality, you won't be getting much "real" power at-all. Such is life!

The inukes don't have very many capacitors either, so it's burst-rating is extremely limited and weak.

Nor does it have PFC, so it just draws large nasty spikes of juice from the grid, which cause additional volt-sags and strain on the pole transformer and house wiring / breakers. Which may or may not be a problem.

To get more power would require more breakers and more amplifiers (and more drivers),
or beefier breakers and beefier wiring and a beefier amplifier and beefier woofers. No free lunch...

All of that makes sense. The question I have now - which Amp should I get if I want 1k watts driven to each box? Or will i get close to that with the 6k?
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post #13 of 14 Old 10-27-2019, 12:11 PM
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Quote:
Originally Posted by ratm View Post
All of that makes sense. The question I have now - which Amp should I get if I want 1k watts driven to each box? Or will i get close to that with the 6k?

At 4 ohms?


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post #14 of 14 Old 10-27-2019, 12:30 PM - Thread Starter
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Quote:
Originally Posted by jevchance View Post
At 4 ohms?


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Or 2 ohms, I still haven't bought the drivers yet. Will be doing that this week.
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