Hello all, I had a question about converting the output on this schematic to be compatible with 8 ohms speakers. The description mentions 32R to 600R range with 100R load being optimum
Thanks for confirming that. Just wanted to explore that line of thought but decided on using an EL34 amp for the correct impedance and power
Some just add a solid state amp to the output and call them hybrids.
Your approach going for an EL34 power amp is the right one 👍
Your approach going for an EL34 power amp is the right one 👍
Thanks man, my only hurdle with that is how to pick up the signal for the sub that includes the tube flavour. I thought to use a car audio type high to low converter to pick up a stereo line level signal and send that to DSP and class D for the sub
I was just only shopping for output transformers and tubes for the EL34 amp. The Psvane EL34C are a bit cheaper than the Shuguang EL34B and the kits states EL34B tubes. Also, the choice between the ECC83 and 12AX7, not sure which is the best fit for the EL34B/EL34C
Found this schematic to pick up the line level signal
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No probs.
That circuit is just a voltage divider. It would help putting together a diagram with all components, the signal source, tube amp, subwoofer etc, to try to find the right approach.
That circuit is just a voltage divider. It would help putting together a diagram with all components, the signal source, tube amp, subwoofer etc, to try to find the right approach.
To quote scripture: All things are possible.
A 100 Ohm to 8 Ohm converter (100:8) is called:
Drum roll . . . .
a Transformer or an Autoformer.
Z:Z ratio = 12.5:1
Turns:Turns ratio = 3.5:1
Should be simple for many output transformer manufacturers to design and build.
You might even be able to find something on the shelf; or wind your own (diy?).
But you will only get whatever power the amplifier puts out; the transformer does not increase power.
A 100 Ohm to 8 Ohm converter (100:8) is called:
Drum roll . . . .
a Transformer or an Autoformer.
Z:Z ratio = 12.5:1
Turns:Turns ratio = 3.5:1
Should be simple for many output transformer manufacturers to design and build.
You might even be able to find something on the shelf; or wind your own (diy?).
But you will only get whatever power the amplifier puts out; the transformer does not increase power.
Thanks all guys, the project is here
https://www.diyaudio.com/community/...-based-personal-portable.408419/#post-7581833
https://www.diyaudio.com/community/...-based-personal-portable.408419/#post-7581833