Home |
Search |
Today's Posts |
#1
Posted to rec.antiques.radio+phono,rec.audio.tubes,alt.guitar.amplifiers
|
|||
|
|||
Mick's AX84 High Octane Build: Circuit board layout and soldering...
Folks,
Started on the circuit board last night. Worked about 6 hours and still not finished, but made good progress. Take a look directly he www.charlestonarea.com/octane/octane_feb_13.htm Or start at the beginning he www.charlestonarea.com/octane Best to all, Mick |
#2
Posted to rec.antiques.radio+phono,rec.audio.tubes,alt.guitar.amplifiers
|
|||
|
|||
Mick's AX84 High Octane Build: Circuit board layout and soldering...
Mick wrote: Folks, Started on the circuit board last night. Worked about 6 hours and still not finished, but made good progress. Take a look directly he www.charlestonarea.com/octane/octane_feb_13.htm Or start at the beginning he www.charlestonarea.com/octane Best to all, Mick Looking good! Are you using metal film resistors throughout? |
#3
Posted to rec.antiques.radio+phono,rec.audio.tubes,alt.guitar.amplifiers
|
|||
|
|||
Mick's AX84 High Octane Build: Circuit board layout and soldering...
RickH said:
*** Are you using metal film resistors throughout? *** Yes, except for the higher wattage resistors. And in anticipation of the inevitable discussion, I have never been able to tell any difference in sound based on resistor type, but I have confirmed that the metals are far better toleranced and stable (all the films are 1%, the oxides are 5%). I welcome any scientific proof that a different resistor type sounds better, or even a single verified test of any sonic difference at all. Mick |
#4
Posted to rec.antiques.radio+phono,rec.audio.tubes,alt.guitar.amplifiers
|
|||
|
|||
Mick's AX84 High Octane Build: Circuit board layout and soldering...
RickH said:
*** Are you using metal film resistors throughout? *** Yes, except for the higher wattage resistors. And in anticipation of the inevitable discussion, I have never been able to tell any difference in sound based on resistor type, but I have confirmed that the metals are far better toleranced and stable (all the films are 1%, the oxides are 5%). I welcome any scientific proof that a different resistor type sounds better, or even a single verified test of any sonic difference at all. Mick |
#5
Posted to rec.antiques.radio+phono,rec.audio.tubes,alt.guitar.amplifiers
|
|||
|
|||
Mick's AX84 High Octane Build: Circuit board layout and soldering...
"Mick" wrote in message ups.com... RickH said: *** Are you using metal film resistors throughout? *** Yes, except for the higher wattage resistors. And in anticipation of the inevitable discussion, I have never been able to tell any difference in sound based on resistor type, but I have confirmed that the metals are far better toleranced and stable (all the films are 1%, the oxides are 5%). I welcome any scientific proof that a different resistor type sounds better, or even a single verified test of any sonic difference at all. Mick Just from personal experience, metal films are quieter than carbon comp resistors. I always liked the clean, shiny colorful look of 1/2 watt and 1 watt A-B carbon resistors. But in the front end of a high gain tube amp, the metal film resistors are sooo much quieter. Not better sound, just less hiss. OTOH, when you remove the hiss (surface noise) from 78 rpm disc playback, the music somehow dies a little bit. Strange, but that's how I hear it. Regards, Tom |
#6
Posted to rec.antiques.radio+phono,rec.audio.tubes,alt.guitar.amplifiers
|
|||
|
|||
Mick's AX84 High Octane Build: Circuit board layout and soldering...
"t.hoehler" wrote in message news:KfcIf.797518$xm3.283691@attbi_s21... "Mick" wrote in message ups.com... RickH said: *** Are you using metal film resistors throughout? *** Yes, except for the higher wattage resistors. And in anticipation of the inevitable discussion, I have never been able to tell any difference in sound based on resistor type, but I have confirmed that the metals are far better toleranced and stable (all the films are 1%, the oxides are 5%). I welcome any scientific proof that a different resistor type sounds better, or even a single verified test of any sonic difference at all. Mick Just from personal experience, metal films are quieter than carbon comp resistors. I always liked the clean, shiny colorful look of 1/2 watt and 1 watt A-B carbon resistors. But in the front end of a high gain tube amp, the metal film resistors are sooo much quieter. Not better sound, just less hiss. A pal of mine who builds very good guitar amps, uses carbon resistors in selected positions. They make the amp sound "just as it should" in his opinion. OTOH, when you remove the hiss (surface noise) from 78 rpm disc playback, the music somehow dies a little bit. Strange, but that's how I hear it. Interesting observation. I do quite a lot of restoration from 78rpm shellac discs. When listening to the surface noise, one sometimes gets the impression there is more hf content in the music than there actually is. Iain |
#7
Posted to rec.antiques.radio+phono,rec.audio.tubes,alt.guitar.amplifiers
|
|||
|
|||
Mick's AX84 High Octane Build: Circuit board layout and soldering...
Tom observed:
*** Just from personal experience, metal films are quieter than carbon comp resistors. I always liked the clean, shiny colorful look of 1/2 watt and 1 watt A-B carbon resistors. But in the front end of a high gain tube amp, the metal film resistors are sooo much quieter. Not better sound, just less hiss. OTOH, when you remove the hiss (surface noise) from 78 rpm disc playback, the music somehow dies a little bit. Strange, but that's how I hear it. *** Hello Tom, I have heard about the noise difference, but these old Sonarman's ears can't tell one from another. I have to agree about removing noise on old records; sort of like colorizing old black a white films. My old SRs get composites because they are appropriate for that era. Mick |