jea48

Responses from jea48

AC Power Cord Wire Gauge
Al,Risch's post on AA was from Nov 2000. Lot has been learned since then regarding the effects a power cord can have on a piece of audio equipment. This may have something to do with the larger conductor size in PCs. Don't know for sure though.Que... 
AC Power Cord Wire Gauge
One conversion I read is that 15 amps X 120 = 1,800 watts.True in simple terms but there are other factors that come into play. Depending on the type and load placed on the branch circuit can effect the total amount of power, watts/VA that may be ... 
Running dedicated AC mains .... need advice ....
Stray voltageInteresting paper, but it doesn't seem to be particularly relevant, and I don't think it makes its case completely. His theme seems to be that cost reduction measures taken by utility companies cause ac return paths to power company e... 
Running dedicated AC mains .... need advice ....
The earth shall not be considered as an effective ground-fault current path. From 2005 NEC 250.4 (A) 5The earth does not have some magical mystical power that sucks AC noise from our audio systems.More and more audio equipment manufacturers are bu... 
Nakamichi PA-7 Hum
I agree with Swampwalker. Good chance you have a ground loop hum caused by the CATV coax cable. Disconnect the coax temporary and see if that doesn't stop the hum. 
Running dedicated AC mains .... need advice ....
Dedicated ground rods? Great for hunting fish worms......Power cords can help control EMI/RFI noise..... 
Listening Room Ceiling
The ceiling is only 8' high and I'm concerned that the drywall will reflect too much sound.Room size . 
Listening Room Ceiling
Sheetrock with a knockdown texture will add a nice finished look to the room.Down side of rock over acoustical panels? Dropped suspended ceiling with lift out acoustical tiles allows future electrical or communications installations of floor above... 
Basic electrical questions.
One point of interest here is what was said about the actual length of the ckts themselves. I read somewhere there is a formula for figuring out the db per feet in loss. I don’t recall it now, but I know it happens. This effect occurs using dedica... 
Basic electrical questions.
In my own system, I have installed an isolation transformer feeding the subpanel, with separate dedicated lines to each component. To address the issue above, I have put a second isolation transformer on the CD dedicated line to keep its digital h... 
Basic electrical questions.
12-10-08: KirkusI'm mostly with Al on this one. The paper that Jea48 refers to is interesting and has some valid information, but there are also some typos and mistakes . . . and I think that some of his conclusions are a little questionable.Kirku... 
Basic electrical questions.
12-09-08: AlmargCan someone offer either a technical explanation, or at least some persuasive anecdotal evidence, to explain the claim that running multiple dedicated lines to the different components of a single system is beneficial.Almarg,Check ... 
Power cord into power amp
I am not sure what you mean by where I ran the ground of the Isoclean to.GloryI have a full Isoclean system and I was running the Supreme Focus through the Transformers and the 80A filter.GloryGlory,The secondary of the transformer. Where did you ... 
Power cord into power amp
Glory,Curiosity killed the cat......By chance did you ever try bypassing the "full Isoclean system" and plug your audio system directly into the wall outlet/s and check for the popping sound you hear through your speakers when turning on the wall ... 
Upgrade Receptacle on 15A breaker
Soundbit,You are correct......If the overcurrent device, breaker, is a 15 amp then the branch circuit is a 15 amp branch circuit. Even if the branch circuit wire is #12 awg.With that said according to NEC code, only a 15 amp receptacle can be inst...