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Subs for bar band?

#42
> how would I go about setting up the customizable monitor mix?

Each channel strip of the Yamaha has a knob labeled "Monitor." Those knobs control the mix which feeds the monitor side of the amp with it in Main/Monitor mode.

> How do I know what X-over frequency to use?

It depends on your speakers. 100 Hz is probably a decent starting point.

> where do I run the cable from the main out on the Yamaha into the power amp ?

You would go from the "Main Out L" on the Yamaha to one of the inputs on the power amp. The amp documentation and/or labelling would tell you which channel to plug into for a mono input. For example, it's Channel 1 on the Crown. You would then connect the sub to the Channel 1 output and the tops to the Channel 2 output.

Since the Yamaha's line outs are unbalanced, you could can use a 1/4" TS to 1/4" TS, 1/4" TRS to 1/4" TRS, or 1/4" to XLR cable from the Yamaha to the Crown.

- John
 
#43
Dang, this is a little off-topic here.
I guess I need to get my eyes checked (or my Brain) because when I saw this thread I thought it said, "Sluts For Bar Band".
Sounded like a good idea to me.
 
#45
I do see a drawback to this approach. The Yamaha doesn't have rumble filters available on the mic inputs and it doesn't provide a way to feed only the kick to the sub. (Notice I did not say the kick only to the sub.) It's generally considered best to only have things that should go to the sub going to the sub. Vocal mics do not need to go to the sub. But, this is not a show stopper. Just a very nice to have.

Do you have a proper kick drum mic?

- John
 
#46
Yes. My drummer has decent mics for all the drums.

So does this mean if I go with the QSC GX5 ( Which is where I am leaning) which has a x-over switch and a frequency of 100 Hz, and set this up like you explained it, that I would have problems? You mean the X-over will not prevent the vocal mics from going to the sub, I understand that, but are there typically frequencies lower than 100Hz in vocal mics?
 
#49
> So does this mean if I go with the QSC GX5 ... which has a x-over switch and a
> frequency of 100 Hz ... that I would have problems?

You won't know until you try it. What are your top and bottom cabinets? Not just driver size, but make and model.

> So you're saying I should be OK doing it like this?

Yes.

We are talking the next step up where you think about what gets to the sub and what doesn't. One school of thought is that it is best to only have things like the kick, bass, and keys make their way to the sub. Anything coming through vocal mics in the sub frequency region is unnecessary and only wastes power. It is typically, generically referred to as rumble. (A quick read for you: Invalid Link Removed)

> most are shelving type centered around 80hz.

The Yamaha's is shelving at 100 Hz.

- John
 
#50
We have some crappy 12x2 mains. I forget the brand name, but they are 150 watts and 8 ohms. Then I have an old Peavey 2x15 bass cab with Black Widows. I don't know the wattage or impedance. I also have an 18" cab that has a blown speaker. I plan on replacing the speaker. I also plan on replacing the mains with some decent ones. Maybe Yamahas or Peaveys. Definitely 8 ohm 12x2s though of a higher wattage rating.
 
#51
I would expect it to work fine as is, but in the end hooking it up and listening will be the key.

Long term I wouldn't expect a bass cab to be an ideal solution as a sub. Bass cabs are designed to run well into the 2k hz range (and beyond) and subs usually don't run above 200 hz. A bass cab as sub will probably work better then middling tops full range, but isn't ideal. Look into proper subs when funds allow.
 
#52
Your questions are all things we've asked at one time

OPINIONS (you asked how to learn)

1-Find the best sound guy you can and offer to roadie for free for him.... asking questions and taking notes

2-Buy the Yamaha Pro sound book (it's on Amazon)

Don't buy anything until the jargon above is clear
 
#53
I'm going with the QSC GX5. I'll be picking it up tomorrow. We actually have a local sound guy who has offered to come to our studio and help us out. We may have him run our stuff for us Friday night.


Thanks for all the advice fellas, it has been incredibly helpful and I appreciate it more than you will ever know. You guys are the bomb.


( I will buy the book too. Thanks)
 
#59
Omar08 said:
I've read the discussions on the thread, it feels great that I'm learning something out of it.
Click to expand...

I hear ya bro. Now if I can just apply what I learned in our rehearsal studio tomorrow, we will be ready for the weekend. It will be really, really, REALLY nice for us all to be able to hear ourselves clearly and to have that sub pumping.


Thanks again everyone and I will let you know how it all turns out.:)
 
#60
Floyd Eye said:
Would this amp be alright?

Invalid Link Removed


Money is tight and I'd like to get as much as I can for under $500.
Click to expand...

We have two of the XLS 1000's in our PA. One for the subs and one for the monitors. We bridge one for the subs (2-8ohm Yamaha single 18's) and it has plenty of power and the programability of the Crown XLS is a real plus. You can dial in all the bass you want or don't want.

We use the other Crown for our monitors. The neat thing about the Crown is that they are 2 ohm stable so if you have 8 ohm monitors you can run four per channel or eight total if you need them. We only run four and occasionally five. Works great.

And with the Crown XLS you are talking less than 20 pounds for BOTH AMPS!!! Your back will thank you.
 

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