Thought I'd brag a little and make a quick thread showing off the new sound system I just installed in our gym. Our gym is a private warehouse gym primarily dedicated to powerlifters. I was planning on building a pair of these subs but came across a deal on some used that was too good to pass up. So our system now consists of a pair of DR200's and 4 Titan 39's. I'm running the system in Mono off of a Behringer nu3000 and all my x-overs, limiters, and EQ are handled by a Dbx Driverack PA. I custom designed the amp rack so that the mixer would be hidden and access to the amp and Driverack would be restricted. I wanted the system to be as simple and foolproof to operate as possible. Everyone who is a member of our gym has 24hr. access and can come and go as they please. For this reason I had to design the system so no one (but myself) could mess with the settings and amp gains.
We will also be using this system as a PA for when we host meets which is why I went with the mixer in the first place over a simple stereo receiver. We are just using a simple Yamaha 6-channel mixer. The mixer takes input from either an AUX cord or FM radio and feeds a mono signal to the Driverack and then comes the fun part. In order to make it where no one could mess with the mixer I needed a way for people to control the volume separate from the main volume on the mixer. For this I found the Control Freak made by Emotiva. This thing works perfect. Here's
the link to the product, but basically it's an external volume knob that attenuates the low level signal coming out of the driverack before it is input to the amp. Since I'm not running in stereo one side of the Control Freak is handling the "Low" output and the other side is handling the "High". So I can now set my gains and main volume on the mixer so that even if someone were to crank the volume knob all the way up they will not be able to damage any of the speakers.
The next piece of equipment that was essential for easy operation was the Furman M-8S power sequencer. This is essentially a power strip, but it has 3 groups of outlets that power up in order with a delay between groups. So first my low voltage equipment powers up (mixer, and driverack), then the FM tuner, and lastly the power amp. On shut-down it powers down in the opposite order so the power amps turn off first. This eliminates any possibility of power down thumps.
So now I've got a setup that only has 1 power switch for everything, 1 volume knob for everything, and access to the mixer, driverack, and amp is restricted. All the members have to do is flip the power switch, plug there phone into the AUX cord and turn up the volume. If they want radio instead all they have to do is turn it on.
All I can say is WOW! These speakers are so clean and clear it's incredible! For members who have been around for a while you will probably recognize the speakers I'm using because they are in fact the exact same speakers once owned by MKtheater and used in his speaker shootout thread.
This system will play extremely loud and I have the volume throttled way back at the mixer so we don't get the cops called on us. The Gym Owners were blown away by the system and had no idea they would get this level of system for there modest budget. We now have a sound system capable of Rock Concert like volume's with zero distortion and a PA system that will fill an auditorium.
I'd like to thank the members of the BFM forum for all there help in designing this system and especially Bruce Weldy who answered tons of my questions.
P.S. The sub placement is temporary and it will eventually go in the back corner of the gym and be stacked and V-plated facing the wall for additional free output. Also, I'm sure some of you will notice that the T39's are not built to spec and have 2 access covers that are not flush mounted. I did not build these so I'm not sure why the builder choose to do that, but I checked all of the covers and they each have gaskets that are fully sealing the cabs.
I think it's also safe to say that we currently have the loudest deadlift platform in Texas!