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PA Overview and Mixer Help

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Blarghmasta View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Blarghmasta Quote  Post ReplyReply Direct Link To This Post Topic: PA Overview and Mixer Help
    Posted: 01 July 2020 at 8:21pm
I have two B2520PROs and a B1800XP.

The B2520PROs are passive cabinets @4ohms with 550w RMS and 2200w peak, and the B1800XP is an active subwoofer.

My current plan is to run the B2520PROs to an XLS 1502, which puts out 2x 775w RMS @2ohms before DSP. Then from the XLS to a mixing board to my laptop, and my B1800XP directly to the mixing board. 

However, I'm confused about mixing board outputs. When shopping, I only see boards with one stereo output, but don't I need one stereo output and a mono output for my subwoofer?

Does my wiring plan make sense? If so, what mixing boards should I look into? Thanks for the help!
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Digbethdave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Digbethdave Quote  Post ReplyReply Direct Link To This Post Posted: 01 July 2020 at 8:30pm
Will the b1800 not take a L & R, then sum in box?

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doober View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote doober Quote  Post ReplyReply Direct Link To This Post Posted: 01 July 2020 at 8:40pm
You need to take left and right outputs from the mixer into the b1800 left and right inputs, then use the left and right outputs from the b1800 into the amplifier for the top speakers.
Blahblahblah
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Blarghmasta View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Blarghmasta Quote  Post ReplyReply Direct Link To This Post Posted: 01 July 2020 at 10:00pm
OK, I think I got it.

B2520s -> Amp -> B1800XP -> Mixer -> Laptop
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Chris Grimshaw View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris Grimshaw Quote  Post ReplyReply Direct Link To This Post Posted: 01 July 2020 at 10:11pm
You'll have a pair of 2x15" mains, and a single 18" sub.

I'd seriously consider moving to:
2x 12" mains
2-4x 18" subs.

Much better balanced, and better sound quality. 2x15+HF boxes only sound good if they have a really good compression driver. The Behringer units you've mentioned do not.

Chris
Quality sound from Sheffield
www.grimshawaudio.com
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BJtheDJ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BJtheDJ Quote  Post ReplyReply Direct Link To This Post Posted: 01 July 2020 at 11:42pm
Originally posted by Blarghmasta Blarghmasta wrote:

OK, I think I got it.

B2520s -> Amp -> B1800XP -> Mixer -> Laptop


Apart from the direction of the arrows, yes - A-OK.
If your vaccinations were mandatory and nobody in your class had measles,
then you know that you're not a Millenial kid.
</f
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Digbethdave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Digbethdave Quote  Post ReplyReply Direct Link To This Post Posted: 02 July 2020 at 12:25am
Laptop - > mixer > y split > sub
                                            > amp > tops
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Conanski View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Conanski Quote  Post ReplyReply Direct Link To This Post Posted: 02 July 2020 at 12:26am
Originally posted by BJtheDJ BJtheDJ wrote:

Originally posted by Blarghmasta Blarghmasta wrote:

OK, I think I got it.

B2520s -> Amp -> B1800XP -> Mixer -> Laptop


Apart from the direction of the arrows, yes - A-OK.

Funny.. that was my thought to. It's always helpful to think of connections from source to destination not the other way around.
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BJtheDJ View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote BJtheDJ Quote  Post ReplyReply Direct Link To This Post Posted: 02 July 2020 at 1:07am
Originally posted by Digbethdave Digbethdave wrote:

Laptop - > mixer > y split > sub
                                            > amp > tops

No need for the Y adapter. B1800XP has two inputs A & B and two
outputs, inputs are combined internally.
If your vaccinations were mandatory and nobody in your class had measles,
then you know that you're not a Millenial kid.
</f
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Blarghmasta View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Blarghmasta Quote  Post ReplyReply Direct Link To This Post Posted: 02 July 2020 at 2:04am
I want to thank all of you: in one day, I've received more help on this forum than I've been able to get from reddit in two weeks. Heart
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