LS9/16 - not the desk for me
in [Live Sound]
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From: gwatts on 29 Nov 2008 09:21 Eeyore wrote: > > George's Pro Sound Company wrote: .... >> >> when i spec show power it is in terms of total amps > > POWER is measured in WATTS ! > http://en.wikipedia.org/wiki/Power_(physics) 'Power' in American slang, given the context, means 'Electrical Mains Service'. You say 'service' to an American electrician in a backstage context and he might punch you. Well, statistically 90% might punch you. > CURRENT is measured in AMPS > http://en.wikipedia.org/wiki/Electric_current When telling the venue electrician what your power needs are you specify in amps and single or three phase. When in Rome... > Sounds like YOU were the 'idiot' You're being nit-picky, it doesn't enhance your credibility. >> but if asked I will break it down to amps per leg > > Which is still NOT POWER. > > As ever, your technical ignorance shines through. > > Graham >
From: George's Pro Sound Company on 29 Nov 2008 09:30 "gwatts" <gwatts(a)frontiernet.net> wrote in message news:_6cYk.3845$5L3.3043(a)newsfe09.iad... > Eeyore wrote: >> >> liquidator wrote: >> >>> 240 in the US is generally for stationary appliances, which a mixer is >>> NOT. >> >> Is there anything stopping you using 240V for non-stationary applications >> other >> than inertia ? > > No, it's actually done all the time, just not usually in the home. > > The place I work has test equipment, pumps, compressors, welders, etc that > all are portable and run on 240. All the floor maintenance equipment is > 240, and anything in the machine shop that you don't pick up to use is 240 > and cabled as portable because they reconfigure frequently for special > jobs. > > Where I used to work we had the Midas house and monitor consoles on 240 and were these 24 ch desks designed for smaller venues? > with all the other signal processing gear on 120. We gave a visiting Oz > engineer 240 for his racks a few times, he was pleasantly surprised. > and how did you address the 50/60hz issues? If I was doing 200,000 people in stadiums perhaps I might have diffrent needs but to design a 24 ch desk the REQUIRES 3 phase to even turn it on for the USA tour market is a bonehead blunder that would instantly make the product unsellable to the USA
From: Eeyore on 29 Nov 2008 09:42 Bob Howes wrote: > "Joe Kotroczo" <kotroczo(a)mac.com> wrote in message > > "Eeyore" <rabbitsfriendsandrelations(a)hotmail.com> wrote: > >> Bob Howes wrote: > >> > >>> Second, I suspect the issue here is that they see their market more in > >>> the permanent theatre install...where, historically, they've done well. > I > >>> might query the wisdom of this (especially now that their traditional > market > >>> is deserting them for digital offerings with a smaller footprint) > >> > >> But they have the S-digital now. Plenty of advance orders. > >> http://www.cadac-sound.com/frameset.asp?P=products/S-Digital.html > > > > They have advance orders, but do they have a working prototype yet? > > > > Other have been selling consoles for years, while they are still > > developing. > > I'm told they have a working prototype (though not into production yet). > However, I can't verify this because I've moved from 5 miles down the road > from their factory to the other side of the world! Good Lord ! Yet another chap in the area. Which town/village ? > However, I have to say that a concern I have is that making a digital > console (i.e. software) is a very different skill from making an analogue > console. Absolutely ! > I hope for their sake the Digital is is good...but remain to be > convinced. Well, I've only heard good things about the control surface. Graham
From: gwatts on 29 Nov 2008 09:43 Eeyore wrote: > > George's Pro Sound Company wrote: > >> normally there are no connecters, everything is a hard tie in beytween >> me and the venue > > Totally avoidable with IEC 60309 connectors. > http://www.mkelectric.co.uk/PDF/technical/COMMANDO_prod.pdf > > Impossible to mis-mate different voltages. Available in splashproof and > watertight version. Single and 3 phase. and godawful expensive. We use tails tied in to a disconnect switch a/k/a 'Company box' and occasionally camlocks because that's what the insurance companies let us do in the delicate balance between safety and cost. It takes about 15 minutes to tie in tails and usually the promoter pays an electrician to do it. I check voltages before I switch on and it works just fine. Red Rocks Amphitheater west of Denver has camlocks at switches in the wings, and more than just a few-100 amps available. We had power to our motors before the first truck was half unloaded and left the power feeder on the reel. > > Note the 240V 125A connector ( 30 kW). > > Graham > If I had a big, portable distribution panel that I frequently hauled out into a hotel ballroom or convention hall I could see using an IEC60309, and I've seen a few of 'em in the US, but they usually have an adapter that ends in camlocks, if they don't have camlocks in the first place.
From: Eeyore on 29 Nov 2008 09:45
gwatts wrote: > Eeyore wrote: > > liquidator wrote: > > > >> 240 in the US is generally for stationary appliances, which a mixer is NOT. > > > > Is there anything stopping you using 240V for non-stationary applications other > > than inertia ? > > No, it's actually done all the time, just not usually in the home. > > The place I work has test equipment, pumps, compressors, welders, etc > that all are portable and run on 240. All the floor maintenance > equipment is 240, and anything in the machine shop that you don't pick > up to use is 240 and cabled as portable because they reconfigure > frequently for special jobs. > > Where I used to work we had the Midas house and monitor consoles on 240 > with all the other signal processing gear on 120. We gave a visiting Oz > engineer 240 for his racks a few times, he was pleasantly surprised. > > Just about all venues in the US can supply 240, when they didn't we'd > rent a small Aggreko. All you need to do now is put IEC 60309 connectors on it and off you go ! Graham |