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From: tbmoas58 on 24 Jan 2007 09:23 > I had miserable real word experiance with carvers,could not carry enough fuses to get them through a show(2400's) the stress of live sound,even excluding physical damage, will easily exceed anything you would do on the bench IMO and experiance the actually useing of a amp is far away more stressful than any bench test that is why I trust real word reports like how pathetic the crowns(macrotechs) and crests(all of thyem) are when pushed my powersoft sailed through bench testing only to catch on fire in real use my rcf art 300a's bench tested fine, again caught on fire as dry rental bench testing IMO is not anything more than can this amp meet its given spec and does its protection"mostly" work as described Give me experiance SR company owners real experiance with a amp over any bench test bench tests are for solder jockeys that do not have a clue as to what will be asked of a amp in the real world, next to worthless IMO george
From: Gareth Magennis on 24 Jan 2007 09:56 <tbmoas58(a)peoplepc.com> wrote in message news:rZJth.14868$yx6.8243(a)newsread2.news.pas.earthlink.net... > >> > I had miserable real word experiance with carvers,could not carry enough > fuses to get them through a show(2400's) > the stress of live sound,even excluding physical damage, will easily > exceed anything you would do on the bench The PT 1800 and 2400 never looked particularly Pro to me, our company wouldn't use them. I'm not sure but I think they were more conventional amps, not the regulated supply design that the PM had. Gareth.
From: Ron(UK) on 24 Jan 2007 10:13 tbmoas58(a)peoplepc.com wrote: the stress of live sound,even excluding physical damage, will easily exceed > anything you would do on the bench Unless you have permission to try your hardest to blow it up - tho the manufacturer should have done that in the first place. OT - I used to have a mate who's job it was to test cars to destruction. He spent his days hurling rally cars round a race track to find out what would break - what a great job. > > bench testing IMO is not anything more than can this amp meet its given spec > and does its protection"mostly" work as described > Give me experiance SR company owners real experiance with a amp over any > bench test > bench tests are for solder jockeys that do not have a clue as to what will > be asked of a amp in the real world, > next to worthless IMO Best way to test an amp is to lend it to a DJ for a night. ;) Ron(UK)
From: liquidator on 24 Jan 2007 11:12 <tbmoas58(a)peoplepc.com> wrote in message news:rZJth.14868$yx6.8243(a)newsread2.news.pas.earthlink.net... > > bench tests are for solder jockeys that do not have a clue as to what will > be asked of a amp in the real world, > next to worthless IMO > george > I won't use an amp without benching it first. At least I can have some confidence it works. I do not trust to ANY manufacturers QC. -- Posted via a free Usenet account from http://www.teranews.com
From: Eeyore on 24 Jan 2007 12:12
tbmoas58(a)peoplepc.com wrote: > bench tests are for solder jockeys that do not have a clue as to what will > be asked of a amp in the real world, > next to worthless IMO Oh really ? I spent some time researching a suitable test and ended getting several 'rave CDs'. We checked out the various tracks and found one with especially low dynamic range. Our 'bench test' involved leaving that on continuous repeat with either (a) the amplifier driven just to the point of clipping (clip leds illuminate briefly from time to time) or (b) the rerally tough test, a further 10dB of 'overdrive' with the amp's own limiters engaged. Thermocouples attached to heatsink and power transformer tell you the important stuff. I guarantee that'll sort the men from the boys. Graham |