Please educate me on SS amps

[Securb]

Listened to a couple of Randall videos.. I totally get the idea what they would be useful for metal. Very fast response. And some of the best pinched notes I've ever heard..

This is a Randell solid state pushed with a DOD 250

 

[Rex_Rocker]

this is not concerning the tubes or the transistors, it depends on the topology of the tone control, if you make some simulation with TSC online (you can google it) you will see the famous mid scooped eq in the tone stack itself, no matter what kind of active device you have before or after the stack

No, I meant the poweramp and the interaction between the power tubes, the transformer and the speaker, past the tone stack.

I'm honestly not sure if it's the interaction between the tubes and the speaker, or rather the interaction between the transformer and the speaker. I think it's the later. Regardless, tube poweramps are the ones with transformers.

 

[marcello252]

No, I meant the poweramp and the interaction between the power tubes, the transformer and the speaker, past the tone stack.

I don't know where you took that graph but it seems just a speaker impedance graph

 

[Rex_Rocker]

I don't know where you took that graph but it seems just a speaker impedance graph

It's not a speaker's. It's a tube poweramp's.

https://www.tonestack.net/articles/guitar-amps/tube-vs-solid-state.html

 

[beaubrummels]

No, I meant the poweramp and the interaction between the power tubes, the transformer and the speaker, past the tone stack.

I'm honestly not sure if it's the interaction between the tubes and the speaker, or rather the interaction between the transformer and the speaker. I think it's the later. Regardless, tube poweramps are the ones with transformers.

Being an impedance graph, what that tells me is the resulting audio signal would have more mids because there's less impedance in that region. But you never hear an amp without a speaker and cabinet, so by the time it gets to your ears, that graph isn't really what you are hearing.

 

[Rex_Rocker]

Being an impedance graph, what that tells me is the resulting audio signal would have more mids because there's less impedance in that region. But you never hear an amp without a speaker and cabinet, so by the time it gets to your ears, that graph isn't really what you are hearing.

Oh, yeah, it's a lot of moving parts. Tube amps aren't just the poweramp. But someone mentioned before that the average tonestack is also regularly midscooped. So it's a bunch of balancing in stages.

My point is "tube warmth" isn't exactly what the common romantic notion makes them out to be. If you want a solid state poweramp to make it behave more like a tube poweramp, it has to be built to simulate that scoop that happens when tube poweramps interact with speakers.

 

[zionstrat]

It's not a speaker's. It's a tube poweramp's.

https://www.tonestack.net/articles/guitar-amps/tube-vs-solid-state.html

Yeeoww!!
This article is incredible! Assuming it is all true, and much of it rings so, it really turns around my thinking on lots of stuff..

Thank for a great article and I'll be checking out the rest of that website tonight.

 

[marcello252]

I don't mean to insist but the graph you post is Impedance vs freq, I'm quite sure this is a speaker graph, google any similar graph and you'll see the analogy