Losing the master is good. The .001 is good but I would use a disk cap. After working on Fenders for 25 years, I found the output transformer makes the biggest difference between SF & BF. The larger transformer has less primary resistance to make more power, but the larger core has more inductance that throws a wet blanket on the tone. It also gives much more bass response, contributing to muddy tone. This makes players turn down the bass control and that ruins the Fender shimmer. I use 2.2uF on the V1 cathodes for best BF results.
Have you seen Part 2? The lead dress made a significant difference. I have now changed some of the preamp tubes, that were on their way out (didn’t want to change them during the videoing, being another variable). I have reduced the first cathode bypass cap on my Princeton and a Tweed Champ. I’ve been wondering about the output transformer? Excluding the 135 watt ultralinear versions, I couldn’t find anyone who had a strong view on them. Best I found was ‘they may have decreased in quality’. 🤔 I assume you’re talking about using the original 85 watt version? Thanks, Greg ua-cam.com/video/TQydfFjSa1o/v-deo.html
@@aphekrecordingstudio4274 I'm not a guitar player. I'm a tech who came in the musician's back door. So I can't play guitar when I'm done fixing them. So, I have been graphing amplifier performance after the repair for the last 20 years. It's not as much fun, but the numbers have finally given me their secrets. I have measured the increased power and bass across all the CBS models compared to Leo's. I bought an inductance meter to measure primary inductance and all of the had much more. An old Twin was 7 Henries. An ultralinear Twin is upwards of 19 Henries. Ask your friends what that would do for Bass response. Tim
@@rivertimefloats825 I know the ultra linear sound bad. I owned one for a year '85/'86. Have you measured these 100 watt models? This is what's been unclear. Nobody seems to have a definitive answer as to how much of a change there is between the and the'70s 100 watt models and the original 85 watt version.
Going to look at the ‘lead dress’ and attempt to get rid of the parasitic oscillations, from poor wiring, in the next video too. There are still some ugliness in the amps performance, that shouldn’t be there.
Definitely worth doing to my ears. Tighter and more balanced, not to mention longevity extension with the new parts.
Thanks, and great shirt!
😁 The shirt was a gift from my family.
Nice!
Very educational. This should be taught in schools..
Sir, what’s a valve?
@@aphekrecordingstudio4274 Is it like a tube ?
@@jcisme Yes, depending on where you live.
Nice one Professor Tone. 😊
@@mattroberts4201 I was surprised at how little change there was, given all the hype.
Losing the master is good. The .001 is good but I would use a disk cap. After working on Fenders for 25 years, I found the output transformer makes the biggest difference between SF & BF. The larger transformer has less primary resistance to make more power, but the larger core has more inductance that throws a wet blanket on the tone. It also gives much more bass response, contributing to muddy tone. This makes players turn down the bass control and that ruins the Fender shimmer. I use 2.2uF on the V1 cathodes for best BF results.
Have you seen Part 2? The lead dress made a significant difference. I have now changed some of the preamp tubes, that were on their way out (didn’t want to change them during the videoing, being another variable). I have reduced the first cathode bypass cap on my Princeton and a Tweed Champ. I’ve been wondering about the output transformer? Excluding the 135 watt ultralinear versions, I couldn’t find anyone who had a strong view on them. Best I found was ‘they may have decreased in quality’. 🤔 I assume you’re talking about using the original 85 watt version? Thanks, Greg
ua-cam.com/video/TQydfFjSa1o/v-deo.html
@@aphekrecordingstudio4274 I'm not a guitar player. I'm a tech who came in the musician's back door. So I can't play guitar when I'm done fixing them. So, I have been graphing amplifier performance after the repair for the last 20 years. It's not as much fun, but the numbers have finally given me their secrets. I have measured the increased power and bass across all the CBS models compared to Leo's. I bought an inductance meter to measure primary inductance and all of the had much more. An old Twin was 7 Henries. An ultralinear Twin is upwards of 19 Henries. Ask your friends what that would do for Bass response. Tim
@@rivertimefloats825 I know the ultra linear sound bad. I owned one for a year '85/'86. Have you measured these 100 watt models? This is what's been unclear. Nobody seems to have a definitive answer as to how much of a change there is between the and the'70s 100 watt models and the original 85 watt version.
@@aphekrecordingstudio4274 I have ten different Twin response curves. Is there a way to send them?
@@rivertimefloats825 that would be great. greg at aphekstudio dot com dot au Thanks. It’s also on the studio website.
Going to look at the ‘lead dress’ and attempt to get rid of the parasitic oscillations, from poor wiring, in the next video too. There are still some ugliness in the amps performance, that shouldn’t be there.