Dave Rat - Roadies in the Midst

There are several non-human things with which my life, as I have chosen it, I consistently depend. My laptop, my cell phone, my car (not so much lately) and to some degree, my camera. Avoiding losing these things provides a constant and often humorous challenge and yes, I do lose my car in just about every parking lot. Additionally, since my world of motion is so inter-woven with these items, it brings me great pleasure to assure that the ones with which I chose to interact are optimized for my particular desires. So with that argument built up as a self justification, I set out out and purchased the new sexy Blackberry 8800. Ooooh! Smaller, built in GPS, plays videos and holds a micro SD card so I can send pics from my camera. I may even figure out a way to blog from it now that I can get my camera pics into it. Excited about my new acquisition, I show Dave Lee who immediately invokes a durability test

It is an on going roadie joke that when anyone gets something new and fragile that we try and politely "take a look" followed by pretending to bite, step on, twist, disassemble and in any way possible, cause dismay to the owner. Dave Lee did very well, pay back is a bitch and I deserved every second.

So we are at the airport terminal and take a shuttle to the lounge that is like a mile away in trailer that requires the shuttle bus to traverse several runways. Fortunately for the plane riders, a wise man has placed this useful notice assisting a safer journey for all.

To the plane and yumm! Read this menu,

wow, does that not sound delicious or at least interesting? Well, being the adventurous eater I am, I am all good with giving it a shot. I under estimated the potential. Oh my, and then I remember that I have already learned this last and perhaps every time I fly to Japan.

I love sushi, I love clean simple healthy foods. I do not love slimy gelatinous and rubbery items of unknown origin. I do not love fish goo, and though the pic does not represent it's full glory, I do not understand why such great lengths of complication would be taken to transform what was at one point, perfectly good food into complex fish flavored jelly.

Simple clean healthy foods, how hard can it be?

**** Sound Nerd Speak ****

The realization that I have been ignoring my fellow and fellowess sound nerds struck me and brought a sad feeling to my heart so I pondered a bit and came up with this to share.

One of the big issues with subwoofer arrays is that they provide significant sound in front of the stage and considerably reduced sound levels off to the sides. Early in the blog days I describe the method we use on this Pepper's tour to increase side sub coverage and made up the name "Sub Cannons" for them. Well, not ever tour or show has the flexibility to build the stage as part of the sub woofer array sooo.....

Here is a simple method of increasing that horizontal dispersion of sub woofer coverage utilizing the side firing sub cannon method with all the subs are stacked in a straight line. This setup is useful both indoors and out and allows you to easily alter the amount of low frequency energy you provide off axis to the people on the sides. The main subs on send 1 are facing forward and have zero time offset. The side firing subs are pointed outwards at 90 degrees and delayed incrementally such that their acoustic focus is 90 degrees off axis. The delay times listed on the drawing are based on a 2 foot deep subwoofer and a 1 foot spacing between the subs.

In order to envision how the setup works, think of the main subs including the first (non spaced) side firing sub as one system which I have circled in red. Think of the spaced side facing subs as a second system. The main subs form the typical forward facing sub array that is quite common and tends to lack adequate side coverage. The fact that the zero time delay sub on the end is pointed sideways is of little or no consequence. Now think of the the +3 feet delayed subs as waiting for the sound from the subs behind it before it radiates it's sound. Then the +6 feet delayed sub waits for the sound of the combined zero delay and +3 delayed subs before it radiates and finally, the +9 delayed sub waits before radiating as well.

This incremental addition increases the volume for the listeners off to the sides while having a relatively minimal effect on the listeners in front. The setup works quite well and is easily adapted to various venue types. If you increase the side firing sub spacing, increase the delay times accordingly. The delay time in feet of each increment is (cabinet depth in feet) + (spacing in feet). So, if your subs are 2 1/2 feet deep and you space them 18", then you would use 4 feet of delay per increment.

You can alter the ratio of the quantities of forward firing to side firing subs as well as the quantity of side firing spaced stacks to achieve different coverage's and volume levels as well. The real beauty of the setup is that it does not require any complex measurements, it transfers well from venue to venue, you can keep all your settings intact as long as you keep your spacing's on the side firing subs the same and if the sides of the venue need more sub you just turn up sub send #2.

Cool cool, if ya give it try, don't forget to let me know what ya think and how it works for you.

**** End Sound Nerd Speak ****

The not afraid to nerd it up,

Dave Rat