AudioMedia - October 2008 - (Page 48) POWER FACT AND FICTION, PART 2 More Pulling of Fluff from Fact… Last month we tried the subjective approach. This month, ANDREW GRAEME puts some theories to the test and more myths to rest with a more technical approach. ast month, David Helping took a very subjective look at the various products that claim to clean or somehow alter studio power supplies, and their effects on the final sound. He told us that he will not ‘go into engineer geekiness’, so I thought I would. The issues raised in the first article were voltage regulation, balanced power, power conditioners, and esoteric power cables. I decided to actually see, or rather hear, what exactly is going on when people claim to have vastly improved audio, as the result of some change in the power is delivered. L To do this, I had to first create a poor mains supply. The voltage had to vary by , radio frequency Testing, O ne, Two… interference (RFI) and switching noise had to be carried on the mains supply, and connection to earth (ground) had to be less than absolute. I then compared the effects of adding esoteric screened power cable, power conditioners, and the effects of RFI under both these and normal conditions. I also created a poor earth by rigging up a m length of wire with a Ω resistor at the end, connecting to the studio earth. This simulated the typical situation one finds in older buildings, where lengths of old wiring are often linked to ageing junction boxes with less than perfect connections. I found that this acted as a splendid antenna for signals coming from flat screens and energy saving light bulbs, and also led to a marked increase in clicks and pops from switches and outside relays from air > 48 AUDIO MEDIA OCTOBER 2008 http://www.microtechgefell.com
Table of Contents Feed for the Digital Edition of AudioMedia - October 2008 Audio Media - October 2008 Content Recording Post Broadcast Geofocus: Portugal & Spain What's Up UK IBC Report Microtech Geffel UM 930 Steinberg Cubase 4.5 ADK Hamburg & Vienna Final Cut: House of Fallen Lexicon PCM96 Review The Conch Awards Feature Sound Devices 788T Review Lexicon PCM96 Allen & Heath Zed R16 Power: Fact & Fiction, PT.2 Product Sampler Plug-ins Video Guide AMSR Plasa Report Audio Technica IEM M3 Rushes Live Mixing Techniques: Bruce Johnston Drawmer 4x4 Kickbox AudioMedia - October 2008 AudioMedia - October 2008 - Audio Media - October 2008 (Page Cover1) AudioMedia - October 2008 - Audio Media - October 2008 (Page Cover2) AudioMedia - October 2008 - Audio Media - October 2008 (Page 3) AudioMedia - October 2008 - Content (Page 4) AudioMedia - October 2008 - Content (Page 5) AudioMedia - October 2008 - Content (Page 6) AudioMedia - October 2008 - Content (Page 7) AudioMedia - October 2008 - Recording (Page 8) AudioMedia - October 2008 - Recording (Page 9) AudioMedia - October 2008 - Recording (Page 10) AudioMedia - October 2008 - Recording (Page 11) AudioMedia - October 2008 - Post (Page 12) AudioMedia - October 2008 - Post (Page 13) AudioMedia - October 2008 - Broadcast (Page 14) AudioMedia - October 2008 - Broadcast (Page 15) AudioMedia - October 2008 - Geofocus: Portugal & Spain (Page 16) AudioMedia - October 2008 - Geofocus: Portugal & Spain (Page 17) AudioMedia - October 2008 - What's Up UK (Page 18) AudioMedia - October 2008 - What's Up UK (Page 19) AudioMedia - October 2008 - IBC Report (Page 20) AudioMedia - October 2008 - IBC Report (Page 21) AudioMedia - October 2008 - Microtech Geffel UM 930 (Page 22) AudioMedia - October 2008 - Microtech Geffel UM 930 (Page 23) AudioMedia - October 2008 - Steinberg Cubase 4.5 (Page 24) AudioMedia - October 2008 - Steinberg Cubase 4.5 (Page 25) AudioMedia - October 2008 - ADK Hamburg & Vienna (Page 26) AudioMedia - October 2008 - ADK Hamburg & Vienna (Page 27) AudioMedia - October 2008 - Final Cut: House of Fallen (Page 28) AudioMedia - October 2008 - Final Cut: House of Fallen (Page 29) AudioMedia - October 2008 - Review (Page 30) AudioMedia - October 2008 - Review (Page 31) AudioMedia - October 2008 - Review (Page 32) AudioMedia - October 2008 - Review (Page 33) AudioMedia - October 2008 - Review (Page 34) AudioMedia - October 2008 - Review (Page 35) AudioMedia - October 2008 - Feature (Page 36) AudioMedia - October 2008 - Feature (Page 37) AudioMedia - October 2008 - Feature (Page 38) AudioMedia - October 2008 - Feature (Page 39) AudioMedia - October 2008 - Review (Page 40) AudioMedia - October 2008 - Review (Page 41) AudioMedia - October 2008 - Lexicon PCM96 (Page 42) AudioMedia - October 2008 - Lexicon PCM96 (Page 43) AudioMedia - October 2008 - Allen & Heath Zed R16 (Page 44) AudioMedia - October 2008 - Allen & Heath Zed R16 (Page 45) AudioMedia - October 2008 - Allen & Heath Zed R16 (Page 46) AudioMedia - October 2008 - Allen & Heath Zed R16 (Page 47) AudioMedia - October 2008 - Power: Fact & Fiction, PT.2 (Page 48) AudioMedia - October 2008 - Power: Fact & Fiction, PT.2 (Page 49) AudioMedia - October 2008 - Power: Fact & Fiction, PT.2 (Page 50) AudioMedia - October 2008 - Power: Fact & Fiction, PT.2 (Page 51) AudioMedia - October 2008 - Product Sampler Plug-ins (Page 52) AudioMedia - October 2008 - Product Sampler Plug-ins (Page 53) AudioMedia - October 2008 - Product Sampler Plug-ins (Page 54) AudioMedia - October 2008 - Product Sampler Plug-ins (Page 55) AudioMedia - October 2008 - Video Guide (Page 56) AudioMedia - October 2008 - Video Guide (Page 57) AudioMedia - October 2008 - Video Guide (Page 58) AudioMedia - October 2008 - Video Guide (Page 59) AudioMedia - October 2008 - AMSR (Page 60) AudioMedia - October 2008 - AMSR (Page 61) AudioMedia - October 2008 - Plasa Report (Page 62) AudioMedia - October 2008 - Plasa Report (Page 63) AudioMedia - October 2008 - Rushes (Page 64) AudioMedia - October 2008 - Rushes (Page 65) AudioMedia - October 2008 - Live Mixing Techniques: Bruce Johnston (Page 66) AudioMedia - October 2008 - Live Mixing Techniques: Bruce Johnston (Page 67) AudioMedia - October 2008 - Live Mixing Techniques: Bruce Johnston (Page 68) AudioMedia - October 2008 - Live Mixing Techniques: Bruce Johnston (Page 69) AudioMedia - October 2008 - Drawmer 4x4 Kickbox (Page 70) AudioMedia - October 2008 - Drawmer 4x4 Kickbox (Page 71) AudioMedia - October 2008 - Drawmer 4x4 Kickbox (Page 72) AudioMedia - October 2008 - Drawmer 4x4 Kickbox (Page 73) AudioMedia - October 2008 - Drawmer 4x4 Kickbox (Page 74) AudioMedia - October 2008 - Drawmer 4x4 Kickbox (Page Cover3) AudioMedia - October 2008 - Drawmer 4x4 Kickbox (Page Cover4)
For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.