Noisy Fender Super Sonic 22 revisited.
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- Опубліковано 24 кві 2021
- Here's a follow up on my other video showing the fix for the notoriously noisy Fender Super Sonic 22. I took the previous treatment to the next level and the amp has never been so quiet.
A number of subscribers have tried this mod with great success so here's the full Monty. - Наука та технологія
I've had a Super-sonic 60 since 2006 and the noise floor is so high and I'm so disappointed. Been trying to find a mod to lower the noise floor and finally found something that might help! Thank you so much!!! and Cheers from Iceland! :)
Blessadur! I hope you have success. I have been in Iceland many times. (Ex Air Atlanta). Let me know how it goes.
@@DerekHerbst747 Sweet! :D Hope you liked it here :) Going to have to finish up a few other projects before I start this journey hahaha Have a good one!
Thanks so much for the vids. You're a legend bru
Perfect. That's what we need. Aluminum foil is safe. Copper foil will work also, it's a little bit more resistant against corrosion/ humidity.
Agreed Jim. I would have used copper foil tape if I had some on hand. It's probably a better way to go and you can solder the ground wire directly to the tape.
great mod, thanks for sharing
I’m actually sorry I didn’t see this before I had one of these to deal with a couple of years ago. It drove me CRAZY at the time.
A lot of the newer Fender tube amps seem to have the same issue in one form or another. It comes down to Lead Dress. They underestimated how much noise is a result of the very high impedance inputs of the tubes, which results in them picking up radiated noise in the longer, unshielded signal leads.
Thank you for this video. I am trying to reduce the noise floor and followed this instructional video by wrapping the ribbon cable with copper tape. Unfortunately, this was not successful for me. I am going to check the ground again tonight. I used cloth guitar wire soldered to copper tape and then wedged and tightened under chassis screw (not soldered). So I’m a little bummed with that. Good news is I wrapped the reverb tank in a thin cotton shirt and that took away all the oscillations I was getting.
Any advice is appreciated- thanks!
It depends what you mean by noise floor. This mod eliminates 50 or 60 cycle hum induced into the ribbon cable from the 6.3 Volt heating circuit. The underlying hiss, especially when the high gain channel is on, is way more difficult to eradicate. This mod helps a bit with that but only a bit. That said, the better you ground the copper tape the better the effect.
Would copper tape be preferable over the aluminum tape? I have some that I had purchased a while back for shielding pickup cavities in guitars.
I was happy to see your Super Sonic videos as I own a Super Sonic Twin (100 watt combo). Often wish it was a 22 instead as it’s complete overkill at 100 watts and weighs a stout 85 lbs. At least half of the time I use my Ampeg GVT5 combo though for convenience. However I do love the versatility of the Super Sonic’s two different clean channel voicings and the gain channel. Having the classic Twin Reverb esque channel and a Bassman esque channel is really amazing. It’s really interesting to hear how different pedals react with the different voicings. Usually anything that doesn’t sound good with one will sound good with the other (ie: Vick Audio Overdriver sounds awful with the Twin Reverb channel and wonderful with the Bassman channel because the mid frequencies are much higher).
Copper tape will work perfectly. Remember to use a wide tape and run it along the length of the ribbon cable and don't spiral wrap it, which would create a nice "antenna".
Thanks for your service. Can I ask what if you don’t ground the aluminium shielding? Not confident I can do this correctly. Is there any risk?
You must ground the shielding layer otherwise it's totally useless. You can put a layer of clear tape over it afterward to prevent any short circuits if you prefer.
I had done your original fix with only the 2 wires shielded. Difference is I used copper tape as it was available. This weekend I wrapped the bus cable completely in copper tape, and then electrical tape to ensure no shorts if it gets pushed down to the board. Its quiet now. I still have the 2 resistors running in parallel as required in the TSB by Fender for the ring. If I remove those the increased gain will cause the ring to come back.
Another thing I noticed is these things do not like LED lights on the same circuit. Nasty little buzz when the lights are on. Im thinking about trying a Fermun power bar, but I'm guessing its something I will have to live with.
Have you tried putting a capacitor in parallel with the LED? About 0.047 should do it.
@@DerekHerbst747 I'm talking led house lights on the same electrical circuit. The cheap DC converters are noisy. Especially the dimmable ones.
@@beausw Gotcha. Yes those things are the bane of my life!!!
Quick follow up. I managed to solve the reverb noise based on your solution. Thank you! However, there is still a buzz that gets louder when volume turned up. The shop said problem with the power adapter and a faulty tube. I can replace the tube but couldn’t find a part called adapter. Would u be familiar with this issue?
Sorry for the late reply, the power adaptor is the big transformer. I doubt that it's the cause of the buzz. The tube might be noisy and it's easy to change and verify. However I would also try turning the amp through 180 degrees and listen if the buzz changes in volume. This will confirm that the buzz is being picked up from an external source. Then comes the process of locating the part that is picking up the noise.
I'm sure this has been asked but what about a noise gate? Would that help eliminate the noise?
Nope. The noise is inherent to the amplifier. A noise gate would only block guitar noise.
I've got this amp it's making me crazy. I thought I had a tube go microphonic, but changing the tube didn't change anything. At certain frequencies the amp will get this weird metallic sound, like a chain rattle or something. Even with the reverb disconnected. Any ideas?
The fix shown in this video should alleviate the problem. If you are not experienced in tube amp repair please get a professional to do the job. specifically, the wires from the board to the tubes can be microphonic.
@@DerekHerbst747 awesome. Thanks a ton. I'll give it a go!
@@DerekHerbst747 maybe dumb question, but what does grounding the tape do? It's just there for electrical insulation, right?
@@EricFoster The tape is aluminium or copper tape. When you ground it to the chassis it acts as a shield against electromagnetic radiation present in the amp. This drastically reduces the hum and noise commonly found in these amplifiers.
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