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How to send this to FOH?

I started using 2 preamps in my rig: 1 clean and one with effects. I want to use DI for both preamps but I don't always have room in the mixer for 2 signals from bass (my band is kinda big).

Is there a way to mix 2 DI signals before sending to FOH? I want to send the Line out from preamp 1 (the xlr DI our on this one is not working) and XLR DI out from preamp 2.

I've seen some boxes to mix signals from 2 mics. But I've never seen one with both line and XLR ins.
would this work? What about impedance mismatches?

Is there any other way?

Thank you in advance.

PS: If this is on the wrong forum, Mods please move it
 
I'm no expert, but I think what you need is a mixer. Here's why; first I don't know of any box that'll combine them on a single channel (as most mixers / devices are going to override your xlr when you plug something into the line jack), and even if you got both signals on one channel, you'd have no way to control the blend - and you want control over that.

So, a small mixer will let you plug both your outputs in, control the mix between those 2, and send it to a single channel on FOH. I'll admit, though, that this separates where the balance and levels are set into 2 different boards (may even be in 2 different places at the venue) which might not be a good thing.
 
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I've had good luck with this mixer:
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The main outs are TRS not XLR but it is still balanced if you use a TRS cable. Its dead simple to use. Push a button to mix both signals to one mono channel, but it does have one of those big power supplies that sits in the middle of the power cord.
 
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Lehle RMI Basswitch IQ seems to be tailor made for your need.
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I've played through one of these and it's great. But it's to pricy for me atm, sadly.

I've had good luck with this mixer:
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The main outs are TRS not XLR but it is still balanced if you use a TRS cable. Its dead simple to use. Push a button to mix both signals to one mono channel, but it does have one of those big power supplies that sits in the middle of the power cord.


That galaxy audio seems pretty good for my purpose and it's quite small. Then again, if I buy a small mixer like the mackie, I would have some extra bells and whistles that may be needed in the future
 
Since we're doing recommendations, here's a couple of different ways I would go on this, though none of them are towards the Lehle posted above. Not that it doesn't look absolutely look a awesome, but is admittedly overkill IMO (or maybe that's just me).

Here are a few less extravagant suggestions (not advocating for any of these, but a quick google search bore some interesting fruit)...
Hard to argue at if it fits the bill (might not / seems cheap)
Mackie (safe choice)
Invalid Link Removed $50 / should get you there in a pinch


There's lots of small steps up in quality and features you can take based on what you might need / grow into. I'd lean towards the Mackie or another trusted brand with a trusted product- the no BS, old reliable, inexpensive, yet solidly built type units that are unlikely to make others jealous, but unlikely to break the bank, break your heart (if it walks off while you aren't looking), or break at all.
 
Mackie 402-VLZ3.

mackie_402vlz3_l.jpg
 
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Also, you could use a Radial JDI or J48. You can put two inputs into it and press the "Merge" button and it will combine the two signals into one XLR output. However, it costs twice as much as the mixer in my previous post, but I'd go with the Radial anyway. On the amp with the XLR out, just use a cable with XLR on one end and TRS on the other, or use an adapter.

jdi-topview-intro-lrg.jpg
 
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