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Junior Varsity
X32 Discussion
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<blockquote data-quote="Timo Ulkuniemi" data-source="post: 83764" data-attributes="member: 1978"><p>Noise problems in general</p><p></p><p>Hello</p><p></p><p>Tonight I was at my workshop to continue with research of noise issues with twisted triple of power-cat-dmx-cable.</p><p></p><p>My friend with his helping hand at dangerous "switch" could not make it so there is nothing new to report. </p><p></p><p>BUT</p><p></p><p>While at it I remembered something from about 1978 or so.... We had slight BZZZZ coming of one speaker of recording studio - customers alarmingly asking "is it on the tape" - after some two years culprit was revealed - building next door had a machine "glueing" plastic parts together with high-frequency power - bad shielding in their setup - radiation coming into our system - problem solved - took at least two years.</p><p></p><p>Tonight my friend called me - he has worked with x-ray-units - he recalled one hospital having irregular problems with x-rays - problem always the same by nature, but timing irregular - finally one late evening when hospital was quiet, a serviceman was there and heard an elevator move behind wall - finally discovering, that elevator caused the problem via electric system of the building.</p><p></p><p></p><p>With these two examples I am trying to point out, that for some problems, that we might think are due to our new X32-S16 system, there might be some completely other explanation. Wireless microphones - house cooling systems - problems with buildings electricity - etc etc</p><p></p><p></p><p>It is obvious, that when replacing an old system - that worked fine without problems - with a new one, there might be new until now unknown problems coming up. After all - replacing the center of large audio system is not a piece of cake - it could be with good luck, but some serious system-grounding etc issues may arise.</p><p></p><p>So basically all the new problems MAY OR MAY NOT be equipment related.</p><p></p><p>My X32-S16 has worked wonderfully all gigs so far - and having done the tests with utmost unlikely conditions - I am looking forward with faith !</p><p></p><p></p><p></p><p>In the seventies I had both dB and Studiosound magazines coming in for a while. One of them had an article about recording studio grounding problems with audible hum. There was an advise - I repeat as good as I remember - "Start at the door - go through all connections of electric wires, power and audio - cut each ground-wire and listen if the hum gets quieter - if not, connect it back - if yes, leave it open - at he end you either get rid of the hum or get electrocuted"</p><p></p><p>This goes well to show an example of basically simple task growing out of proposal....</p><p></p><p></p><p>Aaron Hammett pointed out some very interesting "catch 22":s in post #5498 - take all those in consideration, so it just might work out right...</p><p></p><p></p><p></p><p>I still plan to do some more testing with "Sparky" and toroidial loads..... just for the heck of it and to help others..</p></blockquote><p></p>
[QUOTE="Timo Ulkuniemi, post: 83764, member: 1978"] Noise problems in general Hello Tonight I was at my workshop to continue with research of noise issues with twisted triple of power-cat-dmx-cable. My friend with his helping hand at dangerous "switch" could not make it so there is nothing new to report. BUT While at it I remembered something from about 1978 or so.... We had slight BZZZZ coming of one speaker of recording studio - customers alarmingly asking "is it on the tape" - after some two years culprit was revealed - building next door had a machine "glueing" plastic parts together with high-frequency power - bad shielding in their setup - radiation coming into our system - problem solved - took at least two years. Tonight my friend called me - he has worked with x-ray-units - he recalled one hospital having irregular problems with x-rays - problem always the same by nature, but timing irregular - finally one late evening when hospital was quiet, a serviceman was there and heard an elevator move behind wall - finally discovering, that elevator caused the problem via electric system of the building. With these two examples I am trying to point out, that for some problems, that we might think are due to our new X32-S16 system, there might be some completely other explanation. Wireless microphones - house cooling systems - problems with buildings electricity - etc etc It is obvious, that when replacing an old system - that worked fine without problems - with a new one, there might be new until now unknown problems coming up. After all - replacing the center of large audio system is not a piece of cake - it could be with good luck, but some serious system-grounding etc issues may arise. So basically all the new problems MAY OR MAY NOT be equipment related. My X32-S16 has worked wonderfully all gigs so far - and having done the tests with utmost unlikely conditions - I am looking forward with faith ! In the seventies I had both dB and Studiosound magazines coming in for a while. One of them had an article about recording studio grounding problems with audible hum. There was an advise - I repeat as good as I remember - "Start at the door - go through all connections of electric wires, power and audio - cut each ground-wire and listen if the hum gets quieter - if not, connect it back - if yes, leave it open - at he end you either get rid of the hum or get electrocuted" This goes well to show an example of basically simple task growing out of proposal.... Aaron Hammett pointed out some very interesting "catch 22":s in post #5498 - take all those in consideration, so it just might work out right... I still plan to do some more testing with "Sparky" and toroidial loads..... just for the heck of it and to help others.. [/QUOTE]
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