Fender super Sonic 22. More clean headroom

[Arbutt]

Hello guys

I have a super Sonic 22 in for a new reverb tank
He asked me if there is anyway I can get more clean headroom.
Tested all the tubes ok. I have tried with new set of 6v6 no change .
Bias is at 19ma pt
Modding is not something I know much about.
Any ideas
Fender-Super-Sonic-22-Schematic.pdf

Thanks Mr A

[alexradium]

get a bigger amp with 6L6s

[Arbutt]

Well thanks for that. Not what I was asking. Please feel free not to comment anymore. Have a nice day

[Helmholtz]

Assuming the the amp is able to produce its rated clean power, you could try to use a high efficiency speaker like a Celestion Vintage 30. 3dB more speaker efficiency doubles your sound power. I don't have any info about the Fender speaker, though.

[Chuck H]

That's the sort of glib comment you'll get here... When it's the experienced truth. If you keep cool and take it as such, make a comment more like "Yeah, well of course. But that's not an option that on the table." Then you might get a more practical response like:

Try talking your guy into a more efficient speaker. I don't know what the stock speaker is, but I'll bet it's not super efficient. Getting a speaker with 3dB more efficiency would have the same affect on loudness as doubling the watts.

Another practical consideration is whether by headroom your guy means 'where the volume knob is when the amp starts to break up' or 'I need the amp to be louder'.?. Two very different things that get confused sometimes.

[Chuck H]

Ah! Simulpost! with identical suggestions and considerations too. So there's your answer Helmholtz is a sharp cookie

[Arbutt]

Thank you Chuck . He says it gets to about 4 and just not clean enough. He said will I need another amp. There maybe something I can do...
The speaker is a fender special design by Eminence.
Any ideas on what speaker I should look it.
My local Guitar shop stocks Marshall UK made vintage 30.
What's your thoughts ?
Thanks a

[Arbutt]

Sorry just seen the second post. On the vintage 30. You lot can type quick compared to me

[Arbutt]

He says the volume is not the issue. It's where it breaks up.

[Dave H]

He says the volume is not the issue. It's where it breaks up.

Reposition the knob on the shaft so that it breaks up on 8

Edit: Or try removing C1

[Helmholtz]

He says the volume is not the issue. It's where it breaks up.

Now, doesn't this mean that there is too little clean volume? The numbers on the volume pot are irrelevant. Even a high power "clean" amp like a Twin Reverb starts to break up around 4 depending on PUs used.

[Arbutt]

In his words were. When I turn up to about 4. It just breaks up too early. He would like it to break up later giving him more cleaner head room .
So I can have a louder cleaner sound

[Jazz P Bass]

Volume knob on 4 is the maximum clean that you will get.
And if you measure it, that is the maximum output of the amp.
After 4, it's all overdriven.

It's typical of most Fender amps.

You could try a different tube type in V1. (12AT7, 12AU7)

[mozz]

There is already a 12at7 in V5, phase splitter. You can try lifting C1. Or this, put another 12AT7 in V1, or even a 12au7 in V5. Lots of possibilities.

[Dave H]

He says the volume is not the issue. It's where it breaks up.

He would like it to break up later giving him more cleaner head room .
So I can have a louder cleaner sound

Those two statements sound contradictory to me but I suppose he means that it will get loud enough but it's too distorted when it does so looks like a more efficient speaker is the way to go. It will still start to break up on 4 but it will be louder with a more efficient speaker.