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Post by cowboycoalminer on Aug 10, 2015 8:47:22 GMT -6
So I've got a pretty good MTX sub that I've never hooked up. Quite honesty, I don't know how to hook it up. Any recommendations on how do do this would be appreciated. The way I've got things now is I run monitor outs from the Apollo to a couple channels on the console. Then I've got the Ross Martin dac going to a couple of channels. I can switch them on the fly in the daw. And when I mix, I have all my channels running to a console strip.
So I guess I'd need to figure out a way to run the sub off the console outs, no?
Thanks for your help in advance.
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Post by mulmany on Aug 10, 2015 10:13:48 GMT -6
Do you have a pair of parallel unbalanced outputs?
Does the sub have a crossover built in?
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Post by tonycamphd on Aug 10, 2015 10:23:11 GMT -6
I'm not sure, but if cowboy is talking about the old MTX sub boxes from behind the truck seat? in which case it will need to be powered separately from his monitor amp.
If the MTX does have a self powering plate amp built in, you should be able to feed it off the speaker outs from your monitor amps, most of those D class plate amps take the speaker leads from amplifiers as inputs, smacks them down, and then re amplifies, that kind of dirt doesn't matter on sub freq's so much.
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Post by cowboycoalminer on Aug 10, 2015 11:28:53 GMT -6
Thanks for the replies guys. This sub is a powered floor model that I had on an entertainment system in another house. It does have a crossover yes.
Forgot to mention I've also got a switch witch that I'd like to incorporate so I can flip it on and off.
So let me walk through this on my head. If I come out of the console (main outs) into the switch witch. Then powered monitors on SW channel 1. I can then hook the sub up on SW channel 2 and it should work right?
Here's another question. The sub inputs are RCA. So I'd need an adapter from xlr to RCA right?
Thanks again.
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Post by Johnkenn on Aug 10, 2015 11:59:53 GMT -6
Seems like it would work that way...but balancing might prove really tricky.
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ericn
Temp
Balance Engineer
Posts: 14,961 
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Post by ericn on Aug 10, 2015 12:40:37 GMT -6
Your plan might work if the sub crossover has a point low enough to integrate with your monitors, your going to need some kind of RTA to find and set this point, a simple iPhone app will do. You should be able to get by with simple adaptors but you might find you need to pad the single to avoid clipping the input of the sub. Here the thing many cheap subs don't go much deeper than most monitors so you might not notice much improvement >
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Deleted
Deleted Member
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Post by Deleted on Aug 10, 2015 12:45:17 GMT -6
You'll have to create a bass management system. The problem with simply driving the sub with the same outputs that are driving your speakers is that for some frequencies (the lower range of your regular speakers and the upper range of the sub), you'll potentially be hearing more LF than actually exists in the mix. OR, depending on your room, you could get cancellation of those low frequencies because of phase issues. You're not likely to hear the true mix and of course that's the reason to have a sub.
A bass-management system is what you see on your AV receiver. There's typically a setup where you tell the receiver if you have a sub and whether you have full range speakers or just satellites. The bass-management then runs some very sharp crossovers to make sure the low frequencies aren't duplicated on sub and main speakers.
You can create a bass-managment system in a DAW, but it's a pain. Create some auxes where the main mix goes for monitoring. Build some sharp crossovers with whatever EQ you've got and send the low part to the sub and the rest to the mains. The main mix should still have an independent path to disk--this whack-a-doodle setup is just for monitoring. Then of course, you've got to tune the whole mess with level monitoring. I've done this before and it will make you tear your hair out.
Better yet, look for a monitor control system with built-in bass management. It will do a much better job and won't make you crazy. But don't just bolt the sub in. Your monitoring won't be truthful.
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Post by jeromemason on Aug 10, 2015 13:07:52 GMT -6
Randge runs a mighty fine sub in his system, maybe he can shed some light on this one.
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Post by Randge on Aug 10, 2015 22:08:52 GMT -6
I have the matching sub with my speakers. The lines go into it first and then split out to the mains. The crossover and necessary dials are on the back of it, so I tweaked them until my favorite music and styles of music that I tend to work on sounded the best to my ears. My crossover is dialed slightly below 80hz for my sub and mix position to sound the best to me.
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