jea48

Responses from jea48

Grounding ?
Which raises another question, why do some amp manufacturers include a ground lift switch. 08-09-09: PhdThe switch only lifts the signal ground from the chassis. Never the safety equipment ground from the chassis/enclosure.. 
Bad Hum Coming Through Amp, What Happened?
Out of the blue a couple of weeks ago, a nasty hum has started to emit from the amp through the speakers, audible starting at 20-25% of the volume output and louder as the volume increases.Ground loop hum as a rule is volume independent. Therefore... 
question about installation of 20 amp wall plug
I have installed 15 amp plugs before with no problem and I thought I had this one installed right but I guess not.07-10-09: KedoadesKedoades,Why not pull the recept out and check how you have it wired?(Of Course remember to turn off the power firs... 
question about installation of 20 amp wall plug
Chuck,Al pretty much hit the nail on the head with his answer. Though just to add to Al's response the overcurrent device, breaker, determines the branch circuit size. Even if the wire size is #12 but the breaker is a 15 amp then a 15 recept would... 
question about installation of 20 amp wall plug
Please clarify ... the PS Audio Ports are rated for both 15amp and 20amp I'm told. Can they be installed in a 15amp dedicated line?07-09-09: Taylor514The receptacle will accept a NEMA 5-15P or 5-20P amp plug.Technically by code a 5-20R receptacle ... 
question about installation of 20 amp wall plug
The receptacle has nothing to do with how much current is drawn, what is plugged into the receptacle does.07-09-09: TpreavesTrue but the face plate of the receptacle configuration determines what plug can be connected to it.The max continuous load... 
question about installation of 20 amp wall plug
Kedoades, As for the 20 receptacle it did not cause your problem.If you have a volt meter I suggest you check the voltage and polarity at the recept.Small straight slot contact is the Hot."T" shaped slot is the neutral."U" shape hole contact the s... 
DIY PC Shield Drain Confusion?
Usually connected to the power source end, the plug.... 
Buzzing when VCR connected to TV
Theo,Question is do you have a CATV cable connected to the TV?If so disconnect the CATV cable from the TV or CATV cable box and see if the buzz/hum stops. If it does the problem is a ground loop caused by the CATV cable system grounding.Is the sou... 
Leviton Hospital Grade AC Outlet - Which One?
Hubbell HBL 8200H and HBL8300H non plated. (See page 10)8200H 15 amp8300H 20 ampGuts are the same, 20 amp rated. Only the faceplate is different.. 
Questions About Photos of VTA
This may help as well.http://www.walkeraudio.com/fine_tuning_your_turntable.htm. 
Time Needed to Break In Tubes Properly Breakin
06-07-09: Glory5/6 hrs. tops.?http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1233982085&openusid&zzJea48&4&5#Jea48. 
RF interference through my phono stage.
Chris_383,If the RFI is something that has started lately and seems to have gotten worse the problem could be simply a corroded signal ground connection on an ic or even a signal ground pin connection on the cartridge. Try unplugging and plugging ... 
Variac vs. Isolation vs. Balanced Transformer? ALL
06-03-09: Undertow.... actually this is a "Balanced transformer" so it will output if there is no loss 128 volts / 2 = 64 volts to the hot and 64 volts to the neutral on the duplex.Balanced is a fancy word for split phase..... The same type of tra... 
Variac vs. Isolation vs. Balanced Transformer? ALL
Gbart, well hopefully there is no loss! But for some reason there is a claim of up to like 5% maybe saturation or something with most transformers? Still it should be better due to obviously cutting the voltage in half on and spreading on 2 phases...