#1786187 - 07/24/07 12:32 PM
Hooking up a Sub to NS-10s...Anyone know how?
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bmxplosive
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I have a pair of Yamaha NS-10ms and they are paired with a Hafler P3000 power amp. What I'm trying to do is put a sub in the signal path so I can hear some of the lower stuff the NS-10s won't put out. What signal path do I use?
I'm using
Mbox2: quarter inch L/R outs
Infinity 15 inch sub: RCA low level L/R inputs as well as positive/negative L/R inputs and outputs (these need a banana plug to hook to them)
Yamaha NS-10m: positive/negative posts on each speaker.
I'm not sure whether I go
Mbox2 > Sub > Power amp > NS-10s OR
MBox2 > Power amp > Sub > NS-10s
Any help/wisdom is much appreciated!
Thanks,
Swaff
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#1786198 - 07/24/07 12:53 PM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: bmxplosive]
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Griffinator
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Ideally, you'd want to use an external crossover for this application.
If you absolutely cannot afford one, then MBox->power amp->sub->NS-10's would engage the sub's internal crossover system. It'd also make the whole system sound like flatulence, but it'd work better than the other alternative you're considering...
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#1786208 - 07/24/07 01:14 PM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: Griffinator]
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bmxplosive
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Thanks for the advice. I'm mostly using this for a side mix room for editing and touching up tracks, but I don't want to have to turn up the volume real loud to hear the lower bass.
What's the reason the crossover built into the sub would not sound good? Are they all just cheap or something?
Swaff
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#1787161 - 07/26/07 09:03 AM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: bmxplosive]
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Griffinator
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Exactly. You're attempting to integrate a home theater sub into a studio monitoring system. The internal crossovers in a home theater sub only exist for the sake of backward compatibility to old HT amplifiers which did not supply a line-level sub out. Hence, they're not particularly well designed.
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#1803175 - 08/31/07 09:38 AM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: Griffinator]
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BAss4Worship
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The way I hook up a sub woofer to a power amp it to connect the two (-) together from the Right and Left speaker then run them both (you can splice one wire to both wires) back to the (+) on the sub and run the (-) back to the Amp(-). This way the sub pick up both L/R signal from the amp. I'm been doing it this ways along time with great result, if you need a diagram I can Email you one. 
Edited by BAss4Worship (08/31/07 09:42 AM)
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#1803327 - 08/31/07 01:59 PM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: bmxplosive]
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paully
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I don't know about the OP, but I'd love to have a copy of the diagram. Could you e-mail one over?
Thanks, Paul
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#1805473 - 09/05/07 09:49 AM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: paully]
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paully
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Hi BAss4Worship,
Thanks for the diagram. I took a look at it, and have a couple questions/concerns. Aside from the level drop caused by the speaker ground returns being forced thru the impedance of the sub, there's one other problem I see.
If the sub is just a speaker, with no passive crossover, doesn't it have way too much hi frequency content? These things usually have at the very least a basic hi-cut filter.
If such a hi-cut filter is present, does that not effect the sound of the main speakers, as they must pass thru it to reach ground?
I'm wondering if you've actually A-B'd the sound of the mains with and without the sub (if it has a filter).
Best, Paul
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WUDAYAKNOW.. For the first time in my life, I'm wrong again!!
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#1805645 - 09/05/07 03:38 PM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: paully]
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BAss4Worship
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Since the amps is feeding the left and right speaker first you will not lose your hi in those speakers. On the return to the sub it will receive both the L/R making it a mono speaker. You of have to push the amp a little to gain back the volume. If you don't like what you hear that way you can try hooking the sub to the two plus (red) terminals, this will give you a center channel. You will not blow the amp.
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#1805850 - 09/06/07 04:16 AM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: BAss4Worship]
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Griffinator
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Since the amps is feeding the left and right speaker first you will not lose your hi in those speakers. On the return to the sub it will receive both the L/R making it a mono speaker. You of have to push the amp a little to gain back the volume. If you don't like what you hear that way you can try hooking the sub to the two plus (red) terminals, this will give you a center channel. You will not blow the amp.
I'd be concerned about doubling the resistance coming back to ground by splicing them together like that.
And hooking up both hotwires to the sub won't give you a center channel, it'll give you a toasted sub.
Don't most consumer-grade subs give left and right speaker terminals for that purpose?
Edited by Griffinator (09/06/07 04:20 AM)
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#1807493 - 09/09/07 03:59 PM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: Griffinator]
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BAss4Worship
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Are you talking about a sub with a build in power amp? if so this will not work. I never burn a speaker or amp using this wiring. If you don't feed good about doing it don't do it.
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#1807558 - 09/09/07 05:18 PM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: BAss4Worship]
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paully
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A stereo amp should never use the red posts to hook up a single speaker. This is only possible if the amp has what is called a "bridge-mono" output mode (which must be user set), and turns the amp into a mono amp with double the power of the individual amps. If it is set up this way, the L/R main speakers won't work as intended. I'd suggest you look at page 10 of this link.
http://www.crownaudio.com/pdf/133472.pdf
Paul
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#1807704 - 09/10/07 04:07 AM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: BAss4Worship]
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Griffinator
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Are you talking about a sub with a build in power amp? if so this will not work. I never burn a speaker or amp using this wiring. If you don't feed good about doing it don't do it.
He mentions that this is an Infinty powered sub with L/R speaker terminal pass-throughs right up front.
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#1830096 - 10/25/07 10:45 AM
Re: Hooking up a Sub to NS-10s...Anyone know how?
[Re: BAss4Worship]
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audiorulez
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Registered: 06/20/07
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The way I hook up a sub woofer to a power amp it to connect the two (-) together from the Right and Left speaker then run them both (you can splice one wire to both wires) back to the (+) on the sub and run the (-) back to the Amp(-). This way the sub pick up both L/R signal from the amp. I'm been doing it this ways along time with great result, if you need a diagram I can Email you one.
DO NOT ATTEMPT THIS!!!!!
1. There's no specifics as to how to hook up the left and right + from the amp.
2. Running the combined - from both left and right to the sub will result in a mono signal through everything in series.
3. Most likely the result will be a pile of blown speakers or power amp.
Best approach would be to go from the M-box to a splitter, feeding the powered sub (via RCA inputs via +4dbu to -10dbV converters) and a power amp for the NS-10's. A switchable on/off send for the subs is ideal, or easy access to the power switch. This allows you to run the NS-10's full range, and engage the sub when you want.
I highly recommend that before you go through all this, you spend some serious time properly acoustically tuning your room. An untuned room will lie, an untuned room with a sub will lie even worse. Also, I recommend that you do NOT mix with the sub on constantly. Use it sparingly, and learn the NS-10's quirky but proven response to get your mixes together. Love em or hate em, NS-10's are still the #1 monitor in studios around the world, and bottom line is if it sounds good through them it will sound great through anything else.
Crutial is monitoring level. Get an SPL meter ($40 radio shack) and keep your nominal mix levels between 70-80dbA tops.
There are also many devices out there that can allow you to choose between multiple monitors if you want to spend some money.
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