Originally Posted by StefanoPolo
I've been scratching my head on this and I need some help....
I setup all the A/V Equipment in my family's new sports bar. I'm familiar with video and upon doing all the research needed, I was able to setup our TV's using a matrix switcher. That works great and I have no issues with it. The problem I'm having is that I was never able to get our speaker system to work as optimal as it should be. What I mean by that is that it's not loud enough when our bar is full and I can't raise the volume (on the amplifier) past halfway or it'll start clipping.
I bought a 70v speaker system after it was suggested to be the best choice. I also bought 2 volume controllers because we need to have our dining area at a different volume than our bar area. The diagram attached shows the install that I have setup. But it's not giving me the loudness that I need. Our building is not that large, each speaker are about 4 to 6 feet about from each other. Do I have this setup wrong? Below are the equipment that I'm using
16 AWG audio wire
Rolls RA2100b Power Amplifier (70v @ 200watts)
2 x Atlas AT100 100 watt Volume Controllers
18 x Dayton CS620ECT 6 inch 70v speakers (tapped at 8 watts)
You do not seem to understand the function of the taps on each speaker. Selecting one tap or another changes the audio signal voltage applied to that speaker and raises or lowers its volume relative to the other speakers in the system. That is the whole idea of the different taps; to allow you to set each speaker's relative volume independently of the others.
The taps on each speaker control the volume of that speaker. That is their purpose. The "8 watts" indication is essentially meaningless, except to indicate the approximate load relative to the overall system and other speakers. You don't want them all selected to "8 watts", because that sets them all to the same relative volume, which is obviously not what is needed.
I think you should take the volume controllers out of the system and just use the different taps on each speaker to set that particular speaker's volume, and that will give you what you want. That is the way it is supposed to be done. I think the volume controllers should not be there and are causing problems with the amplifier volume overall.
Put some music through the system at a moderate volume, and try connecting the tap selector wire on each speaker to the various taps one at a time until you get the relative volume you want for that location. That is the way it is done. Ignore the "wattage" or any other labeling.
The whole idea of this type of system is that each speaker can be set at a different volume relative to the others by using the different taps on the speaker transformer, to accommodate the volume needed at that location. The main volume control, of course, raises or lowers the volume of the whole system, but the speakers selected to be louder will still be louder relative to the speakers selected by tap to not be so loud.
Once you get the volume controllers out of the system and get each speaker tapped to set its desired volume, you can then see if the amp still clips or distorts, or whether it will give you enough overall volume. 200 watts for 18 speakers is only 11 watts (max) per speaker, which may just not be enough.
It may be that you need a bigger amplifier to drive 18 speakers to the desired overall volume. 18 speakers are probably too many for that amplifier to drive. I think a 70V amplifier rated for 500 watts or more would be more appropriate.
Check out the Crown CDi 1000, that might be better for what you have.