DSL40C Rectifier Conversion:

Robert Herndon said:
@Amp Mad Scientist , @syscokid , @ivan H - and other esteemed audiophiles...

I've been asked to explore replacing the EL34's in a DSL40C with a solid state rectifier, like the ones available from Tube Depot and Yellow jacket. Is this a feasible alternative???
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It sounds like SS fizzy doo doo :poo:.

A big part of the joy is over-driving the output tubes till they scream (plead) and beg for holy mercy.
Don't take away the joy.
Torturing the output tube is the key to eternal happiness.

EL 34 is not a rectifier but a pentode. But there are FET replacements and there are socket adapters for smaller low wattage output tubes.
But there are replacements, I think these have lost popularity because they just don't sound so great.
 
Ya cannot replace a power tube with a rectifier circuit. You can use a Yellow Jacket converter to replace an EL34 with an EL84. And if the amp has a tube rectifier, Yellow Jacket makes a solid state rectifier adapter.

Don't really know how well the EL34 to EL84 adapter works.
 
Robert Herndon said:
@Amp Mad Scientist , @syscokid , @ivan H - and other esteemed audiophiles...

I've been asked to explore replacing the EL34's in a DSL40C with a solid state rectifier, like the ones available from Tube Depot and Yellow jacket. Is this a feasible alternative???
Click to expand...

It sounds to me like your customer has confused terminology a little bit. A rectifier converts alternating current to direct current. Most modern amplifiers already use solid-state rectification. Older amplifiers did use a specialized tube to rectify the AC. A 5Y3 is a common rectifier tube; my little 1973 Fender Champ uses one of those.

The EL34 tubes are used for amplification.
 
smitty_p said:
It sounds to me like your customer has confused terminology a little bit. A rectifier converts alternating current to direct current. Most modern amplifiers already use solid-state rectification. Older amplifiers did use a specialized tube to rectify the AC. A 5Y3 is a common rectifier tube; my little 1973 Fender Champ uses one of those.

The EL34 tubes are used for amplification.
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He saw this and asked if it could be used to replace EL34's...

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They call it a "Solid State Tube Rectifier."
 
Robert Herndon said:
He saw this and asked if it could be used to replace EL34's...

View attachment 76678

They call it a "Solid State Tube Rectifier."
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Right. It’s used to replace the tube rectifier in amplifiers that use a tube to rectify AC to DC. In the case of the DLS40C, that amplifier does not use a tube to rectify the AC. It already uses a solid-state rectifier circuit.

The types of tubes it is designed to replace are listed on its label: a 5AR4, a 5U4, or a 5Y3. Admittedly, those aren’t tubes one may be used to hearing about everyday! We’re usually talking about preamp tubes and power tubes.

So, no, it cannot replace the EL34s.
 
smitty_p said:
Right. It’s used to replace the tube rectifier in amplifiers that use a tube to rectify AC to DC. In the case of the DLS40C, that amplifier does not use a tube to rectify the AC. It already uses a solid-state rectifier circuit.

The types of tubes it is designed to replace are listed on its label: a 5AR4, a 5U4, or a 5Y3. Admittedly, those aren’t tubes one may used used to hearing about everyday! We’re usually talking about preamp tubes and power tubes.

So, no, it cannot replace the EL34s.
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Appreciate that input, kind Sir!!!!
 
I'm wondering why the amp's owner would even be thinking about the possibility/feasibility of replacing the amps output tubes with solid state devices. Has he given any reason for this enquiry? Cheers
 
ivan H said:
I'm wondering why the amp's owner would even be thinking about the possibility/feasibility of replacing the amps output tubes with solid state devices. Has he given any reason for this enquiry? Cheers
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No reason given, just asked me if it was possible???
 
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