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That's why I didn't recommend an aux-fed sub, because I know the MG124CX only has one aux output. You can't really do both.

A simple crossover is the solution, though I still think you can control the sub largely with the low EQ on your music channel. You can control that with CompuHost -- it has an EQ integrated. Plus your sound card will have one, too.

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[color=#ffff55]Mickey J.[/color]
Alas for those who never sing, but die with all their music in them.
-- Oliver Wendell Holmes, Sr.

Yes, I was suggesting that you use the "AUX" to send the bass signal and yes that would work very well. Apparently you are already using that send for monitors. To bad Yamaha didn't see fit to offer more AUX sends on that board. One thing I learned early in the buisiness was you can never have to many Aux's. In any case we have to play with the cards we are dealt. There may be another option in your case. Run an experiment with your board and see if you can engage both the "ST" and "GROUP 1/2" buttons on your music channel. If it allows you to send a signal to both at the same time then you should be able to control the volume of your sub using the " Group 1/2" fader and sending the sub it's signal from the "Group 1 or 2" output jacks. If the experiment is a success the remainder of your original signal path can remain intact. Sometimes being a sound tech involves a little bit of imagination. Keep us posted and good luck.

This method would hardly be considered "hacking something up", it is not only a widely accepted method it is the preferred method of many of today's top sound technicians.
I'm sure Bob takes his sound very seriously, that is why he went the extra expense and purchased the Yorkies. I'm also pretty sure he will invest in a crossover at his earliest convenience but he asked a specific question with specific guidelines.

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Quickness of mind will deceive the eye

I guess I'm a little spoiled with my 6 AUX sends, 4 sub groups and cold beer to boot.

Seriously though, I think he is just looking for a temporary fix for now. The show must go on.

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Quickness of mind will deceive the eye

The group-fed sub suggestion is a good one.

Clearly I need to upgrade to LondonLive's mixer. If it keeps his beer cold... that's a feature I need!

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Jeff Wheeler, moonlight DJ/KJ

Suggestions on what to get and where to get it?

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

And you don't even need one that complex for your application.

This simple 2-way DBX unit is only $149.

http://www.zzounds.com/item--DBX223

If you have been thinking of getting a Sonic Maximizer, they also make one with a built in sub-crossover. Two-birds/one stone.

http://www.bbesound.com/products/sonic- ... /362sw.htm

So these are a couple of my choices? Didn't realize I was going to have to spend an extra$ 150 when I purchased the sub.

How is this integrated into the mixer and the sub?

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

Run the outputs of the mixer (or eq if you are running one) to the crossover. The high outputs run to the top cabs amp/powered speaker, the low/sub outputs run to the subs amp/powered sub.

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LIKE Lonman on Facebook - Lonman Productions Karaoke & my main site via my profile!

This is the thing. You don't want anything but the very low bass going to your sub-amp and speaker...and vice versa to your mains. What a basic 2-way crossover does, is take the full range output from your mixer to it's inputs, where it then split's the sound into two outputs. Anything above your chosen crossover frequency goes to the high output, and below to the low output. Those two outputs (High & Low) then run to your separate amps (or powered sub) and on to the speakers. Only "regular" Lows, Mids & Highs come out of your main speakers, and very low Bass out of your sub woofer. It all sounds very sweet! There are also 3-way and even 4-way crossovers for tri & quad amped scenarios but they are much less common in a mobile environment.

I found this picture (LINK) which explains the above.

When you run out of a headphone jack, you are sending the entire spectrum to your subwoofer which isn't designed to handle those "normal" frequency's. Now it may have a low pass filter on the inputs, but it's still not the most efficient way to do it.

Clear as mud?

Mississippi mud!


I'll shop around. This is going to put a crimp on my rack I made but I'll figure it out. Thanks for all the help guys, I'm sure I will still have a question or two when it's all said and done.

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

Ok so if I purchase the DBX 223, the picture below shows my Yamaha MG124CS mixer, the DBX 223 crossover, the Yorkville NX55P, the Carvin LS1801NA subwoofer. It does not show the Behringer 215A which I am using as a stage monitor.

Which are the high and low outputs on the mixer? What types of connectors will be needed for these from the mixer to the crossover? Will I need to run my monitor thru the crossover and if so, using what connections?

What connections should be ran from the crossover to the speakers? I would assume the crossover button on the back of the sub should not be depressed. Should the crossover frequency button on the back of the sub be 120Hz or 80 Hz. Should the hi pass output button on the sub be depressed or not?

I'd like to purchase whatever cables I need along with the DBX today so I can hook this all up Thursday for my next gig. Thanks for all the help!

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

Ok so if I purchase the DBX 223, the picture below shows my Yamaha MG124CS mixer




That should be Yamaha MG024CX.

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

Thoughts on this crossover? $99 including shipping.

http://www.sweetwater.com/store/detail/PV23XO/

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

First off, it would make your life a lot simpler if you get a crossover with XLR inputs and outputs. IF you want a DBX product I would choose the 223XL.( two way stereo three way mono) or if you think you will eventually want to run a three way stereo system you could get the 234XL. Another option would be get yourself a used DriveRack PA off from Ebay, there are a lot of them now that the PA+ version is out.
Your mixer simply has the "Main Outs" if you get a Xover with XLR outs and you are running both Left and Right just run a regular "mic cables" from the "outputs" of your mixer to the right and left "inputs" of your Xover. Then from the Xover run "mic cables" from the "Lows" out to your Carvins In. Then from the jacks marked "highs" on your Xover run mic cables to your Yorkvilles In's. set the crossover frequency around 100 hz on the xover to start with and adjust to suit your needs. usually between 90 and 120hz depending on the sub.
No, monitors do not go through the crossover.

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Quickness of mind will deceive the eye

Incorrect, if you are using an external crossover then you would want to bypass the cossover in the sub. The "crossover / bypass" button should be pushed in.

This would be irrelevant as the subs crossover should be bypassed

This would also be irrelevant as you would not be using the "thru output" on the Carvin.

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Quickness of mind will deceive the eye

Will I be happier in the long run spending the extra money on the DriveRack PA or PA+?

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

Quote:
Currently I have been hooking up my stage monitor thru the aux jack (third row from the right, 2nd port down. JD are you telling me to plug m1.4" into that port or the one below? Will that work with my powered sub?

Yes, I was suggesting that you use the "AUX" to send the bass signal and yes that would work very well. Apparently you are already using that send for monitors. To bad Yamaha didn't see fit to offer more AUX sends on that board. One thing I learned early in the buisiness was you can never have to many Aux's. In any case we have to play with the cards we are dealt. There may be another option in your case. Run an experiment with your board and see if you can engage both the "ST" and "GROUP 1/2" buttons on your music channel. If it allows you to send a signal to both at the same time then you should be able to control the volume of your sub using the " Group 1/2" fader and sending the sub it's signal from the "Group 1 or 2" output jacks. If the experiment is a success the remainder of your original signal path can remain intact. Sometimes being a sound tech involves a little bit of imagination. Keep us posted and good luck.

I am going to have to try this method, No crossover yet and sub didn't do it for me last night. JD, yes I can engage both at the same time. So I just need to use a 1/4" jack to the mixer Group Out 1 or 2 connected to the sub output. In this case, should the hi pass and crossover buttons be depressed? I can't try this until I set up tonight, system is at one venue and I will be transporting it at 5, setting up and then trying this.

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

You want to go out the Yamaha "Group Out 1 or 2 " into the " INPUT " XLR on your Carvin, NOT the "output" XLR of the Carvin.
DO NOT bypass the crossover in the Carvin and try setting it to 80hz first.
Your tops will be attached directly to the "Stereo Outs" on the Yamaha. Doing it this way should allow you to control your tops with the "Stereo Out" fader and your Carvin should be controlled by your " Group 1/2 " fader.
Don't forget to engage both the "ST" and "1-2" buttons on your music channel(s).

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Quickness of mind will deceive the eye

Thanks! So I will need to run to Radio Shack on my bike and pick up a 1/4" to male xlr,, preferably about 25 foot. Only need 15 for Thursday set up but never know. I've been running my mains thru the stereo out xlr. Is that ok?

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KingBing Entertainment C'mon Up! I have a song for you!!! [font=MS Sans Serif][/font]

Absolutely, it's the way I prefer to run them if at all possible. Bob, if you still have my number from the great Yorkville adventure feel free to give me a call if that is easier for you. Sometimes things get a little twisted when they have to go thru this little keyboard of mine.

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Quickness of mind will deceive the eye