Re: Noise in Grounding, wasRe: dead mdd 2003 psu
there is a nethum,syntesizerlike splashes and fireworks and like automatic gunfire sounds that are so loud that u can not here the sound you are workin on. Did you try shielding the audio leads? Every computer produces interference, and your description of the noises sounds a bit like that. You could try putting the amplifier further away from the Mac, and if that is not enough, outputting the sound through USB to a sound device positioned close to the amplifier. For the others: these fireworks and such are only audible on high amplification levels! -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Noise in Grounding, wasRe: dead mdd 2003 psu
Hi Wayne, the model i want to use it in is the 1.25 mhz year 2003 167 mhz bus 400 fw, i was supposed to use this mdd for soundripping editing cleaning etc, all the macs have had some backgroundnoise on the sound out when moving cursor, using psu power, and it leaks through the system ground so that it will affect all other connected soundouts, on the system, the amp is an old revox a 50 someone said that you need to leave a cable connected in the mini jack, but that produces only a small effect there is a nethum,syntesizerlike splashes and fireworks and like automatic gunfire sounds that are so loud that u can not here the sound you are workin on. is the mdd the shitty last attempt that apple then gave up or what, ?' I have a similar problem with my MDD but I noticed it only when I changed my monitor. I have a nice HD Samsung digital TV as a monitor now and the sounds you describe come out of its speakers - I have my system sounds from the speakers, connected to the sound out minijack and the main sound out from a M-Audio Revolution 7.1 digital output to my hi-end stereo set. When it's very late I switch the main sound to the Samsung's speakers, too. I noticed the sounds (they remind me of a video arcade far away) after I installed the optional CHUD controls with which I switch off one of the CPUs of my MDD. It's a good thing because I listen mostly to AIFFs from my harddisks and the dual MDD's fans can get too noisy when listening to low volume music. Another funny thing is that the chattering sounds sometimes disappear when I bring another app to the front like my Camino browser and then they start again when I bring another app in front of the browser ... It's a ghost in the machine :-) I love my MDD, otherwise. I'm running Tiger and sometimes Panther when I want to use older Adobe apps under Classic. Their newer stuff is bloatware and even opening a simple page in Illustrator takes ages on a dual MDD 1.25, I still use CS2. I'm a bit disappointed in Apple, have been using Macs from 1990 as a graphic designer and nowadays all I see are lifestyle gadgets with the Apple logo. But I'm an old man now ;-) apart from the noisy fans, that do not disturb me while using headphones I also use headphones sometimes, a Stax Lambda Nova Signature set and love it. Also great with movies, the M-Audio Rev card has a nice fake surround setting - if I get it to work. The Mac drivers for that card are total crap, the upgraded ones are even worse. When I saw M-Audio ads in recording magazines the guys always used Macs :-) Go figure ... Good luck, Jörg. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Noise in Grounding, wasRe: dead mdd 2003 psu
Hi Wayne, the model i want to use it in is the 1.25 mhz year 2003 167 mhz bus 400 fw, i was supposed to use this mdd for soundripping editing cleaning etc, all the macs have had some backgroundnoise on the sound out when moving cursor, using psu power, and it leaks through the system ground so that it will affect all other connected soundouts, on the system, the amp is an old revox a 50 someone said that you need to leave a cable connected in the mini jack, but that produces only a small effect there is a nethum,syntesizerlike splashes and fireworks and like automatic gunfire sounds that are so loud that u can not here the sound you are workin on. is the mdd the shitty last attempt that apple then gave up or what, ?' I have a similar problem with my MDD but I noticed it only when I changed my monitor. I have a nice HD Samsung digital TV as a monitor now and the sounds you describe come out of its speakers - I have my system sounds from the speakers, connected to the sound out minijack and the main sound out from a M-Audio Revolution 7.1 digital output to my hi-end stereo set. When it's very late I switch the main sound to the Samsung's speakers, too. I noticed the sounds (they remind me of a video arcade far away) after I installed the optional CHUD controls with which I switch off one of the CPUs of my MDD. It's a good thing because I listen mostly to AIFFs from my harddisks and the dual MDD's fans can get too noisy when listening to low volume music. Another funny thing is that the chattering sounds sometimes disappear when I bring another app to the front like my Camino browser and then they start again when I bring another app in front of the browser ... It's a ghost in the machine :-) I love my MDD, otherwise. I'm running Tiger and sometimes Panther when I want to use older Adobe apps under Classic. Their newer stuff is bloatware and even opening a simple page in Illustrator takes ages on a dual MDD 1.25, I still use CS2. I'm a bit disappointed in Apple, have been using Macs from 1990 as a graphic designer and nowadays all I see are lifestyle gadgets with the Apple logo. But I'm an old man now ;-) apart from the noisy fans, that do not disturb me while using headphones I also use headphones sometimes, a Stax Lambda Nova Signature set and love it. Also great with movies, the M-Audio Rev card has a nice fake surround setting - if I get it to work. The Mac drivers for that card are total crap, the upgraded ones are even worse. When I saw M-Audio ads in recording magazines the guys always used Macs :-) Go figure ... Good luck, Jörg. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Noise in Grounding, wasRe: dead mdd 2003 psu
Lo, At 13:41 01/03/2012, you wrote: Hi Wayne, the model i want to use it in is the 1.25 mhz year 2003 167 mhz bus 400 fw, i was supposed to use this mdd for soundripping editing cleaning etc, all the macs have had some backgroundnoise on the sound out when moving cursor, using psu power, and it leaks through the system ground so that it will affect all other connected soundouts, on the system, the amp is an old revox a 50 snip I also use headphones sometimes, a Stax Lambda Nova Signature set and love it. Also great with movies, the M-Audio Rev card has a nice fake surround setting - if I get it to work. The Mac drivers for that card are total crap, the upgraded ones are even worse. Stax? Are those the electrostatic ear speakers that look like something a WWII pilot used to wear? Serious money, you must really be into your music to buy them. The best head phones i bought were my sennheiser HD 650 ovation II back in 1992 for £130. I sadly cannot find any headphones with velvet cushions like those beauties. Martin N Mac Mini, Moderator of MiniDisc,amithlonopen,bwfc Yahoogroups -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Noise in Grounding, wasRe: dead mdd 2003 psu
2012/1/4 Wayne Stewart waynejstew...@gmail.com All the MDD power supplies are interchangeable. On Jan 4, 4:00 am, k l prinsk...@gmail.com wrote: house fuse blows in a sec when you attach the powerchord, my guess is the psu are the psus interchangeable with older 2 x 867 mhz mdd psu ?? the model i want to use it in is the 1.25 mhz year 2003 167 mhz bus 400 fw, and a happy new year to all of you ... I changed the psu and it works but . i was supposed to use this mdd for soundripping editing cleaning etc, all the macs have had some backgroundnoise on the sound out when moving cursor, using psu power, and it leaks through the system ground so that it will affect all other connected soundouts, on the system, the amp is an old revox a 50 someone said that you need to leave a cable connected in the mini jack, but that produces only a small effect there is a nethum,syntesizerlike splashes and fireworks and like automatic gunfire sounds that are so loud that u can not here the sound you are workin on. is the mdd the shitty last attempt that apple then gave up or what, ?' apart from the noisy fans, that do not disturb me while using headphones but this cackling that i guess poor grounding - HOW TO FIX IT ??? i use system 9.22 for sound editing - protools and oasys soundcard and built in sound, and the disturbance is all over - also in 10.4 this problem was at a lesser degree also in my digital audio 466 mhz and in my several pm 7600s if i can not find an easy fix i am forced back to the slower DA - the one now is 1.25 mhz any input MUCH appreciated, -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Noise in Grounding, wasRe: dead mdd 2003 psu
This sounds more like the electrical circuits in the room where you're working are poorly grounded or floating. If supplied from an ungrounded (two-wire) receptacle, the two lines will float at about 60 volts above ground ... one half of the nominal 120 volt line to neutral voltage. The primary side of the switching PSU makes no assumption about this and is perfectly fine with either grounded or floating input. All it cares is that the two lines are 120 volts between them. Indeed, the input voltage is first doubled to 325 volts dc and is subsequently converted to +5, +3.2, +12 and -12 volts, as required. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
