jea48

Responses from jea48

Determining wire phase
The wires in my subwoofer are yellow and white. I’m trying to figure out which lead is the positive, which is the negative. @steakster As for the woofer speaker polarity: Use a 1.5Vdc C or a D cell battery. Press either one the two wires on t... 
Evaluating Equipment-induced EMI noise in one’s audio system
@venpick said: Well I wished I would have searched here first. I just learned this same lesson. i found an EMI tester on ebay and thought it would be a great tool to own. Turns out i got exactly the same kind of results as you. Around 70mv nois... 
Unplugging power cords from amps/ pre amps
. The normal surge testing is at 5kV, which is believed to be the maximum voltage a home could receive from the electric grid. That is according to Wirecutter which is not correct. Wirecutter may use 5kV... The actual recognized testing volta... 
Sagging power plugs in wall outlet, diy
@fastfreight Great to hear the cable support worked out for you. Cheap to build too. Even fun... Placing the cup exactly where you want it is a pain. Especially when you used Epoxy. I made three small pencil marks on the plate for installing th... 
Resolving Hum with Battery Back-up (EcoFlow) vs Power Conditioners: success vs failure
@thaluza Thanks for the kind words.    
Resolving Hum with Battery Back-up (EcoFlow) vs Power Conditioners: success vs failure
mark200mph 60 posts 04-07-2024 at 05:17am Carlsbad2 is it possible to bypass the ground at the breaker box and run a big earthen spike into the earth and wrap copper wire around much like a lightning rod then run it to you grou... 
Resolving Hum with Battery Back-up (EcoFlow) vs Power Conditioners: success vs failure
@uberk All is well until it’s not. Food for thought. All those appliances found in your home have micro processors in them. Your air conditioning equipment as well as the heating equipment has micro processors. The AFCI, GFCI, combination GFCI/... 
Larry the Cable Guys
jea48 said: Increase the wire gauge be it solid or stranded increases the inductance in the circuit. Still can’t believe I said that... No excuse. .  
Larry the Cable Guys
kijanki Said: What I said before about 4 wires having the same inductance as equivalent 1 wire would be true if 4 wires fit in the diameter of solid 1 wire - not possible because of added insulation. With larger overall diameter of multiple insu... 
Larry the Cable Guys
@kijanki Said: I believe that he is simply wrong. Thicker wire has lower inductance. I agree... I can’t help thinking what else he was wrong on. @kijanki, I greatly appreciate you chiming in. Jim  
Sagging power plugs in wall outlet, diy
@rfprice $50.00 is not that bad of a price. It’s not like it’s a mass produced item. Sure beats paying $80.00. .  
Larry the Cable Guys
@kijanki, Great post as usual. . kijanki Said: Just one observation. Thicker wire has lower inductance. @kijanki Da,... right you are. I don’t know what I was thinking. I guess my brain turned off when Michael from Essential Sound Product... 
Larry the Cable Guys
A few things the cable designer said that caught my attention. Size of the conductor wire gauge matters. Well ya... How you get there without changing the phase relationship between the voltage and the current. Increase the wire gauge be it soli... 
The molecular level explanation of "cable burn-in"
classicrockfan If the wire is live there will be an electric field around it. That’s all that is needed, plus being held by the person checking for AC voltage. The person, being the ground completing a capacitive circuit. How does a Volt Stick w... 
Sagging power plugs in wall outlet, diy
@fastfreight Cut the 1-1/2" PVC coupling. (You’ll make three cuts.) (One coupling makes two cups.) First I cut the length of the coupling to 1-1/8". (Use a piece of 1-1/2" PVC pipe to hold the coupling against the fence of the miter saw. (Aroun...