|Internal Wire Gauge?|
I don't know about other folks, but I try to avoid accidentally buying 300V wiring for tube amp builds. The wire rating I cited above is used by transformer manufacturers in their mains and output transformers. UL 1015 is not shielded wire; it is ...
|Internal Wire Gauge?|
18 gauge for the power wiring to and from the mains xfmr and 20 gauge for the signal wiring to and from the output transformer. The wiring should be UL1015 listed (600 volts and 13 amps for #20 and 18 amps for #18 at 40 degrees C)
|Please Educate Me|
Suppose you send the same digital picture file to two printers. One printer kicks up ink residue and drips on the paper, the other doesn’t. The resulting output will be better on one printer than the other— even though they were both fed the exact...
If you are going to get the Parasound HCA-3500 you will need two power cords since it has two 15-amp fused IEC inlets. So you must run two 20-amp circuits just for that. If you are going to get the Fidelity KW500, that has a 20-amp IEC inlet. For ...
|New at Qobuz - no HiRes sound|
"Hi rez" on Tidal is 16/44.1 unless you have the MQA option through your streamer app or or it comes with your DAC.Hi-rez on Qobuz is 24 bit 48 to 196k. The Levinson 30.5 has a 20-bit Ultra Analog DAC which cannot do 24 bit hi rez. I think that th...
|Suggestions for side wood panel selection / choice for a custom 2A3 build...|
Aluminum. Never steel for tube amps. Steel is magnetic and attracts leakage flux from the transformers and sends it everywhere to what's attached to chassis ground.
|Speaker Treatment To Resist Negative External Infuence|
Doesn't RF get through the driver cones? I think what you're hearing has more to do with the paint adding more mass to the cabinet.
|Dedicated circuit |
+1 for Jim also..Unfortunately, the ac compressor is going to infect the whole house, it won't be confined to the subpanel. Running a 100 foot branch circuit makes it a magnet for EMI generated throughout the house, so I would use 3-wire romex. Th...
|Paralleled Transistors |
Not really. The more transistors paralleled results in less current through each transistor. The benefits are: less distortion and less of a beta drop, making any inherent beta mismatch not a great factor (and further reduced by emitter resistors ...
|Krell Class A/B power amps, do 'anticipator circuits' work?|
The bias cannot be adjusted from the signal alone. Any circuit that slides the bias has to take into account the load presented by the speaker, for that is the only thing that draws current through the output devices. The buffer would, in theory, ...
|What is the Silliest Accessory You Have Ever Seen.|
The product bases it’s claim on affecting the behavior of sound waves into a corner, which is a staple of room acoustical design and has more of a basis in science than painting a fuse and seeing which way works better.
|10agw +10agw=7agw? need some big Banana's|
Math is correct, but only for solid core. YMMV with stranded. The largest banana plugs I saw on Parts Express is 14 to 8 gauge. They may fit, depending on the number/size of conductors making up the 10 gauge (individually they may be less that 10 ...
|Impedance change!? |
Five ohm resistance is about right for an 8-ohm speaker. Eleven ohms means there is a broken wire or connection somewhere.
|Is it possible one channel of my DAC is clipping?|
It’s more common for problems to appear in one channel than both. All electronics are subject to some kind of failure in one form or another.
|Living with unsolvable hum - Any audio detectives out there?|
It’s a tough call because that preamp has no problem outside the house and the problem is replicated on other circuits inside your house... and isolating the circuit is of no help. A voltage imbalance can cause dc to offset the ac waveform, as can...