Two channel speaker cables

[sine143]

DJP, even like this?
https://www.dropbox.com/s/l6ic1h42yu4yu ... .32.47.jpg

depends how far you are splitting your stacks by. if it aint about 55 feet with t39s... then yeah. even like that. check out the thread djp posted before asking though...

[Michael Murphy]

Yeah Im familiar with the placement thread. And yup indoors Id definitely go with one of those options. The 2 T39's and OT top's will be deployed like the pic I posted for outdoor use, no wall etc. I think you guys call it FOH, front of house. er well not really in my case it will be front of bar, FOB in car park or football field, cricket pitch etc. If outdoors and a wall is available Id also definitely go with a placement suggestion. So if Im correct the V plate outdoors (with no boundary reinforcement) is the best option for the bass cabs. I thought maybe he was referring to the cables or something else.

[Bruce Weldy]

Unless I'm misunderstanding - that's all the speakers he has and he sometimes does a mono-block like the picture.....which is certainly just fine.

[Michael Murphy]

Yup thats all Ive got for now. Inspiration is on its way in the form of an IPR 1600amp, a berry xlr phantom power supply for the dbx mic and an adapter cable and some meters http://www.ebay.com/itm/NEW-3-AC-0-500V ... OC:US:3160 if they ever get to miami, wish I had seen its from china Steeups! (Trini slang used to describe sucking teeth. It is usually used as a gesture of disapproval or annoyance. The longer and louder the "steups" is, denotes the severity of annoyance or frustration.)
Then the next pair of T39's will be born and my first BFM system done and up for rent. And like a true BFM'er Ill build some more
The meters were to mount on the mixer console, it was supposed to be a surprise. Steeeeups

[byacey]

I don't know that I would permanently mount an AC panel meter on my console. It really wouldn't serve any purpose aside from setting the limiters, in which it would make more sense to install it in the power amp rack. For monitoring audio levels, it won't react fast enough with program material, and if your limiters are working properly, who really cares what the output voltage of the amp is during regular use?

[Michael Murphy]

Well I do see your point, however I just thought being able to check the voltage at a glance would be nice, sample rate is 3 times per second so we will see how it displays, because this is new to be id like to monitor as many parameters as possible until I'm confident nothing can go wrong. Plus when I get my test equipment id like to see the relationship between SPL and voltage.
Ps @ 9 bucks who can go wrong?

[byacey]

The digital meter won't react fast enough to provide any meaningful info with program material. This is why analog VU meters with specific ballistics in the meter movement are used, as well as reading in decibels rather than volts.

If you calibrate 0dB on the console VU meter for 50V, or whatever you set your LF limiter to, this will provide a better overall view of how hard you're working the sound system.

[Michael Murphy]

Excellent point. Now where do I get my hands on these VDU meters?

[racertomtom]

and if your limiters are working properly, who really cares what the output voltage of the amp is during regular use?

If you calibrate 0dB on the console VU meter for 50V, or whatever you set your LF limiter to, this will provide a better overall view of how hard you're working the sound system.

+1..... I'm also reminded of something Bob Heil told me in the late '70s, "Don't forget to listen"

[Michael Murphy]

Byacey, what is Program material? On another note I wonder if the Digital Multi Volt Meter is the cause of some ppl getting 52v when measuring a 50hz sine wave vs 38v playing music, is it the meter not reading fast enough?

[sine143]

I think it has to do with crest factor

http://en.wikipedia.org/wiki/Crest_factor

[byacey]

Program material is changing audio, music, speech, pink noise, etc. versus a single frequency sine wave as used to set the limiter thresholds. Those AC panel meters are typically meant for measuring a steady, usually 50 or 60 cycle, sine wave voltage. It will hunt all over the place like a fart in a windstorm when trying to measure an ever changing audio signal. If you just want random flashing numbers, this will certainly provide that, but I doubt you will find any meaning in the displayed numbers.

However, an analog VU meter, or a well designed digital bar graph meter with ballistics will display the average AC RMS levels expressed in dB instead of volts.