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Looper's Delight
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phillip wilson wrote: > Another trying week another email to the list. > > I am begining to feel guilty for the amount of help i am asking other > for, however I dont know where else to turn. I know this is a super-huge > email, but please,if you know anything about echoplex's and their > problems and feel you may have new light to shed, please try contribute > before I litterally run out of options. > > I have just spent the whole night determined to iron out the noise > trouble that has plagued black echoplex pro plus (my second of three). > > basically it makes a huge amount of hum all the time from the moment the > power cord is plugged in. this noise rises as the unit is switched on > and can be raised and lowered by adjusting the volume of the pa system > > hower no matter how the in and output volume pots are set, it makes no > differance, also turning the balance from loop to input makes no change > to the hum. the actual fidelity of the audio behind the hum is fine, i > can record a loop and the loop itself is clear and undistorted. > > tonight I have made some more discoveries that may help someone diagnose > the problem... > > 1. i have had the roms and ram out of this unit and swapped with > echoplex3 (yes the one that doesnt synch cos of crystals!!) anyways, i > have tried all combinations and echoplex three accepts the ram and roms > from noisy echoplex 2 without any incresed hum...echoplex2 now has the > roms and ram of echoplex3 without any lowering or change of hum > (therefore i can rule out ram and roms as culprits) > > 2. I was really persistant and managed to get those damn shields off > echoplex2 and gently pressed the two square chips (this cured a noise > problem with echoplex1 back in the day)...no dice. > I dont have the correct tools to completly remove these chips and > clean.reseat so this is still a potential area that may harbour the > problem?? > > 3. I found that I can connect a lead to the pa and put my lead into ANY > jack round the back, input,output,footpedal,feedback etc ...the hum is > constant across ALL of the jacks (exceot the synch ones where obviously > there is a whining of the clock). > > 4. If i plug into my little practice amp the problem APPEARS to go > away...that is to say I can plug echoplex2 into any of the four pa > inputs (and its a new one) , or into other pa's (my friends,my clubs > etc) and AB the same channels and settings with my other > echoplex's...the others are aways quiet...echoplex2 is always > noisy...however in the practice amp things sound as clean as a whistle > on all units? > > I don't think i have EVER stuck with such an unreliable and problematic > unit type for so long...ever... that is more testement to just how GOOD > the echoplex can be, i love the way it works , when it works..however as > a product it appears that all echoplex's are NOT created equal. > > Thanks so much for reading this far, if anyone knows anyone else who > might be able to shed light on this situation, please email me or > forward this onto them. > > > Love and Warm wishes > > Phill MyOneManBand Wilson > > ------------------------------------------------------------------------ > Sounds like? How many syllables? Guess and win prizes with Search > Charades! <http://www.searchcharades.com>