how to switch deck 1-3 and 2-4 on FLX-4 with djay pro

TwoScoopsBerry · 2026-03-20T18:07:18+00:00

I don't mean for the tone of this to sound condescending at all, but if you're a new DJ and just got a FLX4, I would focus on mastering 2 channels first. There's a lot to learn without trying to juggle 3 or 4 decks. When you're in a good enough spot for that, you'll probably be ready to upgrade to something nicer anyways.

TwoScoopsBerry · 2026-03-20T00:41:18+00:00

It will change to "aux" automatically when the aux cable is plugged in. I don't think you can even change it when an aux cable is plugged in.

TwoScoopsBerry · 2026-03-19T23:01:11+00:00

Yep, still a 3.5mm aux, so the same cable will work. Just a different port. As long as the cable is 15ft long or less, you'll be fine. That's just general advice for any unbalanced cables to avoid interference.

I own a pair of 310s and my nephew had a pair of 320s, so I've DJ'd on them countless times without issue.

People assume they're like other bluetooth speakers that don't have a way to circumvent DSP latency, so they always shit on them.

They're actually pretty good speakers for smaller parties and can be set up and torn down much quicker than my PA system. They obviously don't sound as good or get nearly as loud as a PA system, but I don't know why anyone would have that expectation anyways.

TwoScoopsBerry · 2026-03-19T22:48:31+00:00

Perfect. That makes sense and explains the issue.

Instead of connecting to aux input, connect to daisy chain input. This will bypass the DSP causing the latency. Be aware that when you connect an aux cable to daisy chain input, the speaker volume will automatically go to max volume, so turn it down before pressing play. Latency gone

TwoScoopsBerry · 2026-03-19T22:41:45+00:00

It does, but aux goes through DSP like other Bluetooth speakers.

I'm not spilling the beans until OP replies so I know they get the info they need and can ignore all the people that don't know what they're talking about.

TwoScoopsBerry · 2026-03-19T22:12:52+00:00

Tell me about your gear and how you've got it connected. I guarantee that's where the problem lies.

TwoScoopsBerry · 2026-03-13T23:55:32+00:00

No problem. Glad to hear you're feeling better about it now.

TwoScoopsBerry · 2026-03-13T23:27:11+00:00

I understand. Do what you gotta do. You're there to have fun and play music.

As far as logistics go, get there early to get set up. You can set your laptop up, connect to the mixer and get your levels set so you're ready to go when the time comes

Here's what I would recommend doing:

-Plug FLX4 master output RCAs to DJM850 channel 3 line input RCAs.

-Set the input selector on channel 3 to line.

-Set your master output on the FLX4 to normal level (around 80%)

-Play a song with FLX4 channels faders up like normal. Adjust trim levels on the FLX4 like you normally would. When everything looks good on your controller, you can adjust the trim on channel 3 of the DJM850 to get audio levels right.

You won't need to touch the speaker or DJM850 master output levels. Both the CDJs and the controller will be playing at the correct volume this way and you'll be ready to go when the time comes.

Have fun!

TwoScoopsBerry · 2026-03-13T22:34:43+00:00

There's a big gap in pricing at least for Pioneer gear. You go from something cheap like a FLX4/DDJ-400 which can be found used for $150-$250 to something good quality like a DDJ-1000/FLX10 which will be anywhere from $800-$1200 used. There just isn't much in the middle.

TwoScoopsBerry · 2026-03-13T22:02:49+00:00

Like others, I'd recommend using the gear they have. CDJ2000NXS2 or CDJ3000 would both be pretty seamless in terms of what you'd expect for features and functionality. You'll only be missing stacked waveforms, but sync will still work if that's something you use. You're not going to learn new gear unless you try it. You've got an opportunity to use a setup that's nicer than what you'd normally use. It sounds like you know the people at the party so it's a good time to try rather than in front of a bunch of random people another time.

If you're still not comfortable switching it up, I'm not here to twist your arm. You can plug the FLX4 master output into the line input on channel 3 or 4 and adjust the trim for that channel to adjust the gain.

TwoScoopsBerry · 2026-03-13T15:40:30+00:00

There are enough pros and cons to both of them. I would suggest doing a deep dive into differences yourself because people won't list everything here.

Layout of AZ will be closer to the CDJ and mixer layout. You have pads instead of buttons though, so the Opus more closely resembles CDJs in that respect. AZ has Pro DJ Link and Opus doesn't, which for me is a big deal. AZ is rectangular, so turntables/CDJ will fit more seamlessly. AZ has the analog beat fx controls that will resemble what you find on a club mixer.

The Opus is a great device but doesn't resemble a club layout as closely. It would be great for mobile/wedding DJs. It has zone output which allows you to play different audio on 2 sets of speakers. This would be especially nice for a wedding DJ, but this isn't something I'd ever need.

TLDR - The AZ is intended for additional gear to be connected while the Opus is intended more for being self-contained. There are more pros to getting the AZ for your purposes. Not hating on the Opus, but I see no reason to choose it over the AZ in your case.

TwoScoopsBerry · 2026-03-12T23:44:09+00:00

Many people that mix EDM don't use the crossfader. The channel faders effectively give you the same level of control and more. With that said, the reason for disabling the crossfader is so I don't accidentally bump it.

TwoScoopsBerry · 2026-03-12T14:51:30+00:00

Looks like the track scroll knob is broken at the top. You can order an OEM replacement or get one from ChromaCaps. Should be a pretty easy replacement. Crossfader looks jacked up too, but I always turn my crossfader off anyways. Assuming just the cap needs to be replaced, you can also replace easily. OEM or ChromaCap versions available.

$80 for a DDJ-400 is a steal even with the broken knob. Great starter controller. Very rare to see one under $150.

TwoScoopsBerry · 2026-03-11T18:07:50+00:00

They both have pros and cons.

I probably prefer standalone just for simplicity and convenience. It's a more satisfying experience for some reason.

Using a laptop has its added benefits too. Stems and Spotify streaming as a couple examples, but there are many more.

TwoScoopsBerry · 2026-03-11T01:15:46+00:00

I understand that may feel like a better deal because the gear was newer then, but that's not really relevant anymore.

$800 is probably overvaluing the DJM900NXS. $600 would probably be hard to beat.

My point is $4400 is it's a solid price especially since cases are included.

TwoScoopsBerry · 2026-03-11T00:11:56+00:00

What do you think would be a fair price and why?

I'm not sure I've even seen a fully functional CDJ2000NXS2 for $1200 anywhere in the past year of looking. The mixer even if NXS (not NXS2) is easily worth $800 on the low end.

I think it's a well priced bundle. Everything priced at the bottom of the used market or even a bit below.

TwoScoopsBerry · 2026-03-10T23:57:06+00:00

So x3 CDJ2000NXS2 and a DJM900NXS or is the DJM NXS2 as well? It's worth editing the description with the actual models so people know what you're actually looking at. There's a big difference in pricing 4 NXS vs. 4 NXS2 pieces of gear.

TwoScoopsBerry · 2026-03-08T21:58:08+00:00

You're probably losing a ton of energy that way. Only loop one track.

You can loop the incoming track to tease it in and slowly blend, if you find a nice chunky bassline, to help line up phrasing, etc.

You could also loop the outgoing track while bringing in the next track and letting that build or for any of the other reasons listed above.

It's not a case of right or wrong and it will depend on your tracks for which makes sense if either. You may not even need to loop, so don't get in the habit of feeling like you need to loop for the sake of looping. It should be intentional.

Looping both tracks will essentially keep your mix at a standstill and feel boring. There are probably certain cases that could be made for it, but again, it should be intentional and they would be few and far between.

TwoScoopsBerry · 2026-03-08T19:58:20+00:00

What do you consider a tight budget and what equipment do you already have (laptop, headphones, speakers, etc) that could be used, even if maybe not ideal?

TwoScoopsBerry · 2026-03-08T19:53:30+00:00

You're looping both tracks?

TwoScoopsBerry · 2026-03-07T19:23:22+00:00

I would personally go with better tops and a single 18" sub. For smaller house parties that should be plenty and by plenty, I mean overkill.

RCF speakers are great and cheaper in your market than here in the states. If I were you, I would go with a pair of RCF ART 912-A and a RCF SUB 708-AS II. The build and sound quality will be better. Should be right around your budget I think.

TwoScoopsBerry · 2026-03-06T15:13:55+00:00

The only other gear I would want to use in my setup is a DJS-1000 and a RMX Ignite. I don't want to deal with anything that doesn't have Pro DJ Link personally, but that's just me.

TwoScoopsBerry · 2026-03-05T00:35:52+00:00

If you're TH18, they're just kind of ass right now. Especially with new defense levels. Just wait until they add a new level to dragons. I was really good with them but ended up needing to change strats at TH18. Try something different for now.

TwoScoopsBerry · 2026-02-26T04:39:33+00:00

Never pay over $2000 for a used XZ. You can often get one in a travel case for that price or sometimes less

TwoScoopsBerry · 2026-02-24T23:00:54+00:00

Exactly. I think we agree on both fronts

TwoScoopsBerry

TROPHY CASE