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Discussion Starter #1
I'm currently looking to buy a Naim Uniti Nova (stereo amplifier, pre-amp, streamer) but have run into a problem with how to integrate with my sub (SVS SB-3000). The Nova will be connected to my Anthem multichannel AVR via FL/FR pre-outs and Nova RCA 1 input which has a AV fixed volume input that works similar to a home theater bypass. So, when I play my home theater Anthem AVR, everything would work as normal with the SB-3000 but when when I play the Nova for 2 channel, a signal would not pass through my Anthem AVR so I'm not able to use my sub. Is there a way to be able to use my SB-3000 while playing the Nova? The Nova has a sub out and so far, my only option is to physically switch the RCA inputs on the sub. Thoughts?

I found this on sound & vision but I'm not smart enough to figure it out - "incorporating a subwoofer for both movies and music in such a setup is more problematic. One recommendation would be to buy a high-quality surround receiver — one from Anthem’s MRX Series, for instance — that provides preamp outputs to connect a more powerful stereo amp for the main left/right channels and lets you store multiple bass management/EQ configurations. With such a setup, you could create one preset optimized for 5.1 movie playback and another tailored specifically for music listening using your front left/right speakers plus subwoofer."

Link to S&V Q&A

Nova - Naim Uniti Nova

Anthem - MRX-720 AVR
 

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Doesn't the SB-3000 have 2 line-level inputs? If so, you could put the AVR's sub out into LFE, and the Nova's sub out into the other. Even if both happen to play at the same time, nothing bad should happen as the sub's already capable of L/R input.
You may need to recalibrate the room EQ if for some reason the line-level is different with another input plugged in (I doubt that, but just in case). If both units have room EQ, they should both manage the sub per their specific configuration.
If it doesn't have dual inputs, an RCA Y-cable 2 female, 1 male would allow you to use a single input on the sub.

In any case, if the Nova can't pass it's sub out through the Anthem, it will go directly. If you have to adjusts the subs output differently for both receivers, you might consider setting the gain for whichever needs it the highest, then setting the output level lower on the other one.

If you ever resolve it some other way, disconnect it.

The Nova has a sub out and so far, my only option is to physically switch the RCA inputs on the sub. Thoughts?
Link to S&V Q&A
Nova - Naim Uniti Nova
Anthem - MRX-720 AVR
 

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Discussion Starter #3 (Edited)
@philpoe - Thank you for the reply!

Yes the SB-3000 has dual inputs and SVS confirmed that I could use the Left input for the Naim Nova since both inputs are identical. They also indicated that I could use a Y RCA cable or a stereo to mono converter. I bought both the Y cable and converter to see which I prefer, leaning toward the mono converter. Since the Nova is is not a traditional sub-out, it will be a full-range signal and I'll need to apply a low pass at the sub to blend the speakers.

The Anthem has room correction so I'm not worried about it setting speaker levels but the Naim Nova does not have an EQ so I need to learn how to set the low pass filter and blend the speakers with it.

Here a pic of the stereo to mono converter.



Thanks again.



Mike
 

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The SB-3000 (like many powered subwoofers) has a low-pass filter built-in, so you may not need to add one.
https://www.svsound.com/products/sb-3000
(search for "low pass filter")

The SB-3000 also has presets, meaning that you can store settings for different usages. Maybe use one for music and one for HT


@philpoe
Since the Nova is is not a traditional sub-out, it will be a full-range signal and I'll need to apply a low pass at the sub to blend the speakers.
 

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JVC RS4500 | ST130 G4 135" | MRX 720 | MC303 MC152 | B&W 802D3, HTM1D3, 805D3, 702S2 | 4x15 IB Subs
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I'm currently looking to buy a Naim Uniti Nova (stereo amplifier, pre-amp, streamer) but have run into a problem with how to integrate with my sub (SVS SB-3000). The Nova will be connected to my Anthem multichannel AVR via FL/FR pre-outs and Nova RCA 1 input which has a AV fixed volume input that works similar to a home theater bypass. So, when I play my home theater Anthem AVR, everything would work as normal with the SB-3000 but when when I play the Nova for 2 channel, a signal would not pass through my Anthem AVR so I'm not able to use my sub. Is there a way to be able to use my SB-3000 while playing the Nova? The Nova has a sub out and so far, my only option is to physically switch the RCA inputs on the sub. Thoughts?

I found this on sound & vision but I'm not smart enough to figure it out - "incorporating a subwoofer for both movies and music in such a setup is more problematic. One recommendation would be to buy a high-quality surround receiver — one from Anthem’s MRX Series, for instance — that provides preamp outputs to connect a more powerful stereo amp for the main left/right channels and lets you store multiple bass management/EQ configurations. With such a setup, you could create one preset optimized for 5.1 movie playback and another tailored specifically for music listening using your front left/right speakers plus subwoofer."

Link to S&V Q&A

Nova - Naim Uniti Nova

Anthem - MRX-720 AVR
Why not use your Anthem 720 for handling all your audio, sub and speakers? The amps in the anthem seem probably better than the amps in the Nova anyway. Are you driving a separate set of speakers for music vs movies? One of the benefits of the Anthem is its incredibly awesome handling of virtual inputs and its 4 presets for handing music and movies separately. Perhaps the nova can be a source and its RCA out could feed into the Anthem. Then the anthem can run the speakers and sub and crossovers, sub levels etc.
 

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Per markmon1's question, and after rereading your first post, can you confirm that when you connect the Nova to the Anthem with RCA jacks, do you get sound from the SB-3000 or not?
(I originally read it as a statement of what already occurred, but now I see that it may be speculation about the connection).

If there's no sound from the subwoofer, you may just need to change a setting on the Anthem, to not pass full-range audio to your speakers only, but to let the subwoofer take low-range sound. There's probably a speaker configuration and subwoofer configuration in the manual.
It may be that speakers are defined as "large" or "small". You want the Anthem to see your speakers as "small", to let the sub do some of the work. I'm pretty sure that the Anthem also has preset configurations, so you can switch back and forth from Stereo to HT settings.

If that's true, you don't need any extra connections to the sub, just the RCA jacks.

Why not use your Anthem 720 for handling all your audio, sub and speakers? The amps in the anthem seem probably better than the amps in the Nova anyway. Are you driving a separate set of speakers for music vs movies?
The Nova will be connected to my Anthem multichannel AVR via FL/FR pre-outs and Nova RCA 1 input which has a AV fixed volume input that works similar to a home theater bypass. So, when I play my home theater Anthem AVR, everything would work as normal with the SB-3000 but when when I play the Nova for 2 channel, a signal would not pass through my Anthem AVR so I'm not able to use my sub. Is there a way to be able to use my SB-3000 while playing the Nova? The Nova has a sub out and so far, my only option is to physically switch the RCA inputs on the sub. Thoughts?
 

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Discussion Starter #7 (Edited)
Why not use your Anthem 720 for handling all your audio, sub and speakers? The amps in the anthem seem probably better than the amps in the Nova anyway. Are you driving a separate set of speakers for music vs movies? One of the benefits of the Anthem is its incredibly awesome handling of virtual inputs and its 4 presets for handing music and movies separately. Perhaps the nova can be a source and its RCA out could feed into the Anthem. Then the anthem can run the speakers and sub and crossovers, sub levels etc.
I hear what you're saying and that was my first thought but I really want to use the Nova's amps because they sound fantastic. Honestly, no reason to pay the money for the Nova and not use its amps, then it becomes just a streamer.
 

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Discussion Starter #8 (Edited)
The SB-3000 (like many powered subwoofers) has a low-pass filter built-in, so you may not need to add one.
https://www.svsound.com/products/sb-3000
(search for "low pass filter")

The SB-3000 also has presets, meaning that you can store settings for different usages. Maybe use one for music and one for HT
Yes, I'm currently using the presets for the SB-3000 (movie/music) for my current setup. Its an extremely handy feature. I need to do more reading on the low pass filters, thanks for the link!

Regarding you second post...I do not have the Nova. I'm currently doing research to see how its going to fit into my system before buying.

I have sent Anthem customer service an email asking how to incorporate the Nova into my system in order to switch back and forth but have not heard back from them.
 

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If you prefer the DAC and amp of the Nova over the Anthem, you may want to consider this:

You can have the Nova act as the DAC and/or amp for your setup for all sources, including HT if you connect all sources to the Anthem.

If you use the front L/R of the main pre-out of the Anthem to the RCA inputs of the Nova, you will use the Anthem's DAC and Nova's amp
If you use the optical out of the Anthem and connect it to the optical input of the Nova, depending on how the Anthem sends the signal and the Nova processes it, you can use either the Anthem's or Nova's DAC, and the Nova's amp.

That leaves more power for the anthem to use for HT, and the Anthem can control the subwoofer, with room correction.

All amps doing their job, preferred DAC used, room correction for the sub and all speakers provided by the Anthem.

I hear what you're saying and that was my first thought but I really want to use the Nova's amps because they sound fantastic. Honestly, no reason to pay the money for the Nova and not use its amps, then it becomes just a streamer.
 

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Discussion Starter #10
If you prefer the DAC and amp of the Nova over the Anthem, you may want to consider this:

You can have the Nova act as the DAC and/or amp for your setup for all sources, including HT if you connect all sources to the Anthem.

1. If you use the front L/R of the main pre-out of the Anthem to the RCA inputs of the Nova, you will use the Anthem's DAC and Nova's amp
2. If you use the optical out of the Anthem and connect it to the optical input of the Nova, depending on how the Anthem sends the signal and the Nova processes it, you can use either the Anthem's or Nova's DAC, and the Nova's amp.

That leaves more power for the anthem to use for HT, and the Anthem can control the subwoofer, with room correction.

All amps doing their job, preferred DAC used, room correction for the sub and all speakers provided by the Anthem.
The Nova would be my 2 channel streamer/hub...so like you say in 1, I would connect FL/FR pre-outs from Anthem to the Nova.

The Nova does not have optical output, only RCA. So I could use RCA output from Nova to Anthem RCA input (with no processing), which in turn would send the signal back to the Nova to play through the FL/FR and I would be using the Nova Amp and sub connected to the Anthem AVR?
 

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I forgot about the on-board functionality of the Nova.
Still use the outputs of the Anthem to go to the Nova. There shouldn't be a need to send any output of the Nova to the Anthem's inputs.
Connect the preouts of the Nova to the 2nd input of the SB-3000 as described before.

Now anything that the Nova plays directly on-board uses it's DAC and amp, and the SB-3000 as a sub
Anything that the Anthem plays uses the Nova's amps for L/R and you have some control over which DAC is used with optical.

The Nova does not have optical output, only RCA. So I could use RCA output from Nova to Anthem RCA input (with no processing), which in turn would send the signal back to the Nova to play through the FL/FR and I would be using the Nova Amp and sub connected to the Anthem AVR?
 

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Discussion Starter #12
I forgot about the on-board functionality of the Nova.
Still use the outputs of the Anthem to go to the Nova. There shouldn't be a need to send any output of the Nova to the Anthem's inputs.
Connect the preouts of the Nova to the 2nd input of the SB-3000 as described before.

Now anything that the Nova plays directly on-board uses it's DAC and amp, and the SB-3000 as a sub
Anything that the Anthem plays uses the Nova's amps for L/R and you have some control over which DAC is used with optical.
Exactly...thanks for your help! I need to brush up on the SB-3000 customization, which is why I bought it! I will more than likely add an additional SB-3000 to my lineup once my wife decides on a media cabinet she likes.
 
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Interestingly, if you're able to place the pair of SB-3000s approximating l/r positions that still satisfy HT, you could have stereo subs for the Nova, and dual LFE from the Anthem, with time and phase correction from the AVR.

Exactly...thanks for your help! I need to brush up on the SB-3000 customization, which is why I bought it! I will more than likely add an additional SB-3000 to my lineup once my wife decides on a media cabinet she likes.
 

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The SB-3000 (like many powered subwoofers) has a low-pass filter built-in, so you may not need to add one.
But to properly integrate sub(s) with L/R pair, you'll also need a high pass filter for the L/R.
 

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Agreed. Hopefully the Unity device has the ability to see the speakers as "small". If not, the the Anthem can do it for it's sources. The worst case may be an inline filter.

But to properly integrate sub(s) with L/R pair, you'll also need a high pass filter for the L/R.
 

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Discussion Starter #16
Interestingly, if you're able to place the pair of SB-3000s approximating l/r positions that still satisfy HT, you could have stereo subs for the Nova, and dual LFE from the Anthem, with time and phase correction from the AVR.

I have a friend who has 6 subs (4 for home theater & 2 for the Uniti Nova) and he does what you’ve suggested. Says it works great. And yes, I would do that as well.


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I forgot about the on-board functionality of the Nova.
Still use the outputs of the Anthem to go to the Nova. There shouldn't be a need to send any output of the Nova to the Anthem's inputs.
Connect the preouts of the Nova to the 2nd input of the SB-3000 as described before.

Now anything that the Nova plays directly on-board uses it's DAC and amp, and the SB-3000 as a sub
Anything that the Anthem plays uses the Nova's amps for L/R and you have some control over which DAC is used with optical.
So if I'm understanding correctly, it appears it all comes down to having a sub with two inputs? I've been trying to figure out this same issue myself, but for me it's a Parasound P5 for my 2 channel preamp and a Denon 3500 for my AVR. My subwoofer is an Acoustech PL-200 and it only has one sub in. I've got the sub connected to the P5 sub output (which has bass management) and that works fine for everything connected to the P5 (cd player, streamer, turntable) but I could not figure how to utilize it for things playing on the AVR, like a movie. The P5 has HT bypass for subwoofers, but even after looking at the manual, I can not figure out how it's supposed to be connected. How common are subs with 2 sets of inputs? Any recommendations?
 

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Many subs have dual inputs. The show them as L/R but they really just sum for the sub to amplify. The built-in summing circuit is why putting an input on each "side" works for that scenario.
You could replace the sub, or if you can find a cheap solution for a summing circuit, you could still use the BIC.
The stereo-to-mono converter in post 3 looks like what you'd need. Feed both sub outputs as L/R, and you'd get a single sub input for the BIC.
In theory, you could also amplify one of the sub outputs and use the speaker-level inputs as an alternative input.

If you're thinking about replacing the BIC, given its performance, 1 step up is the RSL Speedwoofer 10s, then another step up after that is the SVS PB-1000.
I mention those 2 because they have free in-home trials and free return shipping to see if you like it. The SVS is also available at Best Buy if you want to use the store's return policy instead.
At the same price as the SVS, the Monoprice Monolith 10" ported may be what you're looking for. Free shipping, but no free returns. It's more powerful, and has XLR and unbalanced inputs. Sometimes an open-box unit is available at a lower price.
A bit more than that, at roughly double a PL-200ii, the Hsu VTF2-Mk5 and Rythmik LV12F are tempting.

So if I'm understanding correctly, it appears it all comes down to having a sub with two inputs? I've been trying to figure out this same issue myself, but for me it's a Parasound P5 for my 2 channel preamp and a Denon 3500 for my AVR. My subwoofer is an Acoustech PL-200 and it only has one sub in. I've got the sub connected to the P5 sub output (which has bass management) and that works fine for everything connected to the P5 (cd player, streamer, turntable) but I could not figure how to utilize it for things playing on the AVR, like a movie. The P5 has HT bypass for subwoofers, but even after looking at the manual, I can not figure out how it's supposed to be connected. How common are subs with 2 sets of inputs? Any recommendations?
 

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Many subs have dual inputs. The show them as L/R but they really just sum for the sub to amplify. The built-in summing circuit is why putting an input on each "side" works for that scenario.
You could replace the sub, or if you can find a cheap solution for a summing circuit, you could still use the BIC.
The stereo-to-mono converter in post 3 looks like what you'd need. Feed both sub outputs as L/R, and you'd get a single sub input for the BIC.
In theory, you could also amplify one of the sub outputs and use the speaker-level inputs as an alternative input.

If you're thinking about replacing the BIC, given its performance, 1 step up is the RSL Speedwoofer 10s, then another step up after that is the SVS PB-1000.
I mention those 2 because they have free in-home trials and free return shipping to see if you like it. The SVS is also available at Best Buy if you want to use the store's return policy instead.
At the same price as the SVS, the Monoprice Monolith 10" ported may be what you're looking for. Free shipping, but no free returns. It's more powerful, and has XLR and unbalanced inputs. Sometimes an open-box unit is available at a lower price.
A bit more than that, at roughly double a PL-200ii, the Hsu VTF2-Mk5 and Rythmik LV12F are tempting.
Well I retried the set up I was trying before and it actually works this way: the sub is connected to the sub output on the P5 and I am using the crossover functionality on the P5 for bass management. Then there is another cable from the sub input on the HT bypass to the sub preout on the AVR. When I run Audyssey on the AVR it sees the connection to the sub and appears to set the crossovers.

I believe when HT bypass is activated the output to the sub is full range. So I take that to mean that when using HT bypass on the P5 the crossovers are set at the AVR and when not using HT bypass the crossovers are set by the P5. I might be totally off base on this. All the subwoofer stuff is really confusing to me.

That’s good to know about subs with L/R being able to connect to two different sub outs. I was actually looking at the Klipsch R-120SW that has those L/R inputs.
 

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It sounds like you've already found your solution. As you determined, even if the P5 allowed full frequency range to the AVRs sub output, the AVR would have already limited it before reaching the P5's input.
The BIC reaches lower than the Klipsch (21Hz +/- 3db vs 29Hz), but the Klipsch seems to have more total power output (116db vs 110db).
You may want to try an in-home trial of the RSL or SVS, or a store purchase of the SVS to see if it's worth your while to step up to that class of sub.

Well I retried the set up I was trying before and it actually works this way: the sub is connected to the sub output on the P5 and I am using the crossover functionality on the P5 for bass management. Then there is another cable from the sub input on the HT bypass to the sub preout on the AVR. When I run Audyssey on the AVR it sees the connection to the sub and appears to set the crossovers.

I believe when HT bypass is activated the output to the sub is full range. So I take that to mean that when using HT bypass on the P5 the crossovers are set at the AVR and when not using HT bypass the crossovers are set by the P5. I might be totally off base on this. All the subwoofer stuff is really confusing to me.

That’s good to know about subs with L/R being able to connect to two different sub outs. I was actually looking at the Klipsch R-120SW that has those L/R inputs.
 
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