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Sujet: Amplifier advice

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Need some advice for setting up a sound system in a football club. They have 2 rooms for music and would like a system that music can be played either separately in each room, or the same in both rooms controlled all at one point behind the bar. Can anyone recommend a good split-system amplifier that would work for this? I was thinking something with a rack mount would be best, any advice on mixers for this also would help.

Cheers
Mike
 
Posté Mon 23 Nov 09 @ 10:17 pm
Hi mate

InterM,Yamaha and QSC to name a few all make multi channel power amps that will do the job with no problems. If you can give me some idea of room size, what speakers and other equipment you have then I would be happy to do the numbers for you and come up with a recomendation.

Daz
 
SOunds to me like you'll need a mixer with multple zones. I may need something like this for a another small venue I help out with.

They want a main soundsystem and a system in the bar. Both to play the same or independently have the multipe inputs (TV, Radio, DJ). They also have aradio mics behind the bar for pub quizzes etc.

I was going to start looking for a rack mounted miltizone mixer that would sit in the backroom of the bar, with the amps and have all the feeds coming to point before being routed back out as required.

Sounds like a similar set up to what you're after as I am sure they will want other inputs as well...

The one thing I know I don't want is "switchable" zones. I want to be able to fade in/out the TV/Radio/DJ without abbrupt cuts...

Cheers,

Roy
 
Thanks for the help so far! Here is a floor plan, at the moment I cant find measurements but 25 meter cabling from both dance floors should reach the amp/mixer to be placed near the middle of the bar, I might go 35m just to be sure...Is there a limit to Speakon cable length before the music output starts to degrade?

Speakers I have used for DJing the past 4 years have been the Quest QS500
Power Handling : 500W RMS 900W Peak / Maximum SPL : 126dB Nominal 12

I am looking at buying 4 of these..but maybe 500w isnt enough for Area1. Or if anyone has better speaker suggestions bring it on! Price is a little bit of an issue..the football club doesnt want to be cheap, but also doesnt want to spend a huge amount, so im thinking around $500-600 USD per speaker is about right for them.


 
Hi mate

As Gadget suggests a multi zone mixer will be required to do this in a slick fashon so i'le take a look at that.

Looking at the layout the QS500 would be neither one thing or the other. They are too small to fill the room on their own and oversized for working with bass bins. Area 1 would need 4 and area 2 would get away with 2. I would look into using a sligtly smaller unit like the QS350 and run them with a bass bin system. So 2X QS350 + 1 Bass bin in area 2 and 4XQS350 + 2 bass bins in area 1.

The Quest speakers you mention are also available as Active units (QSA) with built in power amplifiers. If you like the speakers you could go for the active version and not have to purchase additional power amps. With these, cable distance would not be a big issue but obviously you will need to budget for installing power points at each speaker location. Speker cable needs to get significantly heavier as distance increases so this can become a substantial cost issue.

Will post more as I research further

Daz
 
I noticed that alot of the clubs & pubs in my closest city were also using the QS350 but would have 4 or 6 in one room. Doesnt this make the amp work harder than it would just using 2? What bass bins were you thinking? Powered speakers could be an option as power is available close to most places the speakers will be. I was thinking non-powered just for ease of not having to walk around and turn them off / on and also as there are sometimes children playing on the dance or stage area the less power or cords we have to worry about the better.
 
Hi mate

The main reason for using additional speakers is to spread the sound evenly It avoids having too much volume in the stage area and not enough in the rest of the room. Active speakers are great for this as you can set each one for the volume you need in its area.

Most power amps will drive 4 loudspeakers with no problem at all. You are correct in that the additional speakers do add to the amplifier load but as long as the amplifier you chose is designed to do this it presents no problems.

If you were to go for the powered speaker solution I would suggest that you dont rely on the nearest power point but have a dedicated power ring installed to run the speakers. This can be done in a way that provides a convinient 1 switch power on/off to kill or activate all the speakers in 1 shot. I agree that you do not want power cables wandering arround where kids my be able to get at them. Thats a definate no no.

If we go for a sub/sat type layout then having satelite speakers with 15" drivers is a waste. The lower frequencey/bass that the slightly larger drivers would produce can be covered by bass bins and the 12" units in the smaller speakers will produce a clearer mid range. The the subs will be doing all the heavy stuff so you use lower powered units to do the mid and top frequency work.

I am having a look at bass bins and a mixer. Should have some more info for you later today.

Regards

Daz
 
Hi mate

Sorry to take so long but ended up working last night.

I have been taking a look at some bass bins for you.
The units that Quest make are way too big and also very expensive. I would suggest you take a look at JBL's JRX118S or SA(amp built in). I use 8 of the 118S units for my PA rig. They dont take up a huge amount of floor space and pack a real punch. Not silly figures price wise either.

While on the subject of JBL, have a look at the JRX112M as an alternative to the Quest units. They are designed for use as stage monitors but work realy well with the 118s

As far as the mixer goes. what do you already have?

Daz
 
No worries, I had a wedding to do this weekend out of town also. My amp is an ALTO PBM8.500 and I also use a Numark DXM01 USB soundcard / mixer. The club would need to buy their own amp and it would be better to go with something that can be in a rack mount. I will look more into the JBL speakers during the week I know a couple of DJ's that use them and they do sound great. Cheers :)
 
Ok cool

Do you want to have the ability to fade between sources at the bar or will a simple zone selector do the job?

The amp will of couse depend on speaker choice so if you let me know which way your going on that I will make some suggestions.

Cheers

Daz
 
Just a zone selector should be fine
 
grug wrote :
Just a zone selector should be fine


This exactly what I've decided on for the bar/clubhouse I'm working with. They have two zones and need inputs for DJ/Stage/Band, Satellite TV, Radio, CD/iPod and Mic.

The Cloud CX 263 does this and more with up to 6 inputs and two mic inputs which can span either or all zones - great for their bingo and pub quiz nights.

This also means they can have any input gong to any zone or all zones. In fact as this is a 3 zone system, they could put up outdoor speakers and control the volume and/or music source independently.

I know Cloud is UK based and not sure whether their kit is available down under. But it is a good benchmark to look for something more locally supplied/produced.

Cheers,

Roy
 
 
Hi mate

The Behringer is not best suited to your requirements. It has lots of features you dont need and very few that you do need.

Have a look for: Samson S zone 4, or Art 405,
 


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