jea48

Responses from jea48

A little test
   
A little test
@jbuhl  Am I correct it rhymes with frugal?   
Is it a Bad Tube or a Bad fuse (Fuse Fatigue)?
That’s a pretty nice amplifier to just use a guess what caused a fuse to blow. These fuses are subminiature 250 Mv. Is that a typo mistake? Is that suppose to be 250V rated fuse? What amperage rating? How tight is the fit of the fuse in the fu... 
Measurements for a dedicated line
From dpop post: 02-23-2024 at 08:47am jea48 said: Are you sure you have an Equipment Grounding Conductor at the outlet? dpop response: 100% most definitely; on both outlets being discussed. I can take my multimeter and read 121.6 ... 
Measurements for a dedicated line
@dpop, I ran some tests for VD on a convenience receptacle outlet branch circuit. Wiring is 12/2 with ground NM cable, (Romex trade name). Length, distance, from panel to wall outlet used for test is approximately 65 ft. Nothing was plugged into... 
Dedicated line help
@tjassoc said: - There debate to use aluminum armored cables as a shielding, not sure of the results. RF shielding is not the main reason for using MC (Metal Clad) aluminum armored cable. The main reason for using 2 conductor with insulated gr... 
Power questions
I do have to tell you though that dedicated ccts do indeed often use separate neutrals Agree, a true dedicated circuit does not share a neutral with other circuits.. Therein a multiwire branch circuit. Multiwire branch circuits are not conside... 
Power questions
2012 Seminar w-Notes v1-0.ppt - indy-aes-2012-seminar-w-notes-v1-0.pdf Check out page 16. Read pages 31 through 37. . A true dedicated branch circuit does share a neutral with other circuits. (Therein a multiwire branch circuit.) A true dedicat... 
Can you touch the tubes?
I avoid touching the print, lettering/numbers, info on old 1950s-1960s 9 pin signal tubes. The oil from fingers can smear the print on the glass. .  
230V Preamp USA
The best solution is to have electrician wire you 240 in your house and you will use best of the best. I doubt a credible licensed electrician will install a 240V branch circuit and 250V outlet to feed a 230V preamp.   2020 NEC 210.6 (A) (... 
Riddle me this....
This comes up when I try to send the edit You must have a verified phone number and physical address in order to post in the Audiogon Forums.  Please return to Audiogon.com  and complete this step. If you have any questions please contact Su... 
Riddle me this....
EDIT: Audiogon system would not let me edit just a few minutes after posting... A normal positive transient signal will cause a driver's speaker voice coil to push the cone forward.  A negative signal transient will cause the voice coil to suck ... 
Riddle me this....
The term absolute phase just confuses the discussion. Signal Absolute Polarity is the terminology that should be used, imo... A normal positive transient signal will cause a driver's speaker voice coil to push the cone forward.  A negative signal ... 
Riddle me this....
@antigrunge2 , Agree...   Standouts where a definite difference could be heard? Etta James, "Love Songs". Track #1, "At Last". Change? Etta’s Voice. Polarity inverted her voice was thin. Correct polarity her voice was full, a more moving prese... 
Riddle me this....
Correct absolute polarity at speakers. Positive signal pushing speaker cone outward. Not negative inverted polarity sucking cone inward. :) https://www.youtube.com/watch?v=axXrs55X9kE