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[6A3sUMMER]

Juuzpo,

That amp looks great!

I do not build guitar amps.
But my Mono-Block Hi Fi amplifiers use a handle just like the one you pictured; well placed to put the weight at the bottom end when carrying.

 

[thelmer]

My first P2P amp

Hi, I have just completed my first P2P tube amp. It's a ECC81-EL84 SE amp. Currently it's running the EL84's in triode mode without NFB. I have attached a schematic with the measured voltages.

 

[StevieH]

Great first

Looks great Thelmer, I'm aslo just in the process of building my first S/E stereo amp, very similar indeed, (same valve layout) built a prototype single channel to fine tune the component values and now building the real stereo one that'll hopefully look the part !
I'll post some photos when it looks something like !

 

[kissabout2002]

Thelmer great job and I think the beautiful black cat help you so much... ....by the way what output do you get with that amp....thanks

 

[Carlp]

Hi, I have just completed my first P2P tube amp. It's a ECC81-EL84 SE amp. Currently it's running the EL84's in triode mode without NFB. I have attached a schematic with the measured voltages.

Your cat belongs in this thread: Show off your audiophile cat.

Shameless thread promotion!

 

[Adolf Corkscrew]

Your cat belongs in this thread: Show off your audiophile cat.

Shameless thread promotion!

Thanks for the plug, I'd missed that thread completely.


A good catssistant is tantamount to a succesful project. They play a crucial role in inspecting the smell and comfort of things and gravitational properties of components. They also contribute to softer sounding amplifiers by coating everything with a softening fibrous dampening material.

 

[JoeAlders]

"A good catssistant is tantamount to a succesful project. They play a crucial role in inspecting the smell and comfort of things and gravitational properties of components. They also contribute to softer sounding amplifiers by coating everything with a softening fibrous dampening material."


I 100% agree!!

 

[stevenrotterdam]

Hi Thelmer!
I like your cat, and if your OPT can handle the current, a 45 tube may be very audiophile< or a cheap PL 36 tube in triode could make 5 watt.

 

[thelmer]

Thelmer great job and I think the beautiful black cat help you so much... ....by the way what output do you get with that amp....thanks

I just measured the output with a scope and I get 2.5W before clipping. It's running a bit lean with only 37 ma current running through the EL84. I will adjust the cathode bias resistor to get it up around 45 ma. Then it should deliver around 3W. It's already loud enough for use in my office.

 

[planet10]

I get 2.5W before clipping

That is high power with a triode EL84 SE. 1.5w is more typical. Our PP EL84 triode class A does 3.2w at clipping.

dave

 

[thelmer]

That is high power with a triode EL84 SE. 1.5w is more typical. Our PP EL84 triode class A does 3.2w at clipping.

I just realized that maybe I should have calculated the RMS value .. I measured 9V p-p on a 1khz sinus curve, so it would be (0,3536*9)*(0.3536*9) / 8 = 1.41W RMS.

 

[dddac]

1,27 Watt...

 

[Bas Horneman]

RH84 mkI for a friend. With SpotifyConnect/Volumio/HifiBerry/Raspberry Pi inside.
Aluminium top plate glued to Ikea tray

 

[planet10]

I see your tubes arw physically distancing BAS :^)

I really like the woodwork.

I like to keep wiring as short as possible, just leaving enuff room for accomodating tube coolers.

 

[JoeAlders]

1,27 Watt...

Exactly

 

[soundbrigade]

I see your tubes arw physically distancing BAS :^)

I really like the woodwork.

I like to keep wiring as short as possible, just leaving enuff room for accomodating tube coolers.

Without any prejudice or judging someone or someone's work, I must just say that I think it's easier to get a good layout with as little as spare space as possible.
Besides with the lack in free space at home, I prefer physical small amps (and speakers).

 

[planet10]

There is a little PP EL84 console amplifier that takes that to extremes.

dave

 

[Bas Horneman]

In hindsight I could have put the tubes closer too each other. But I'm not too concerned about short wires generally and because the media player is inside, the signal path is shorter than most systems.

 

[jdg123]

Space is an interesting topic. I’ve chosen to eliminate the space a table/rack takes up. The inside pair are umbilical joined, the outer pair are mono blocks. There’s room for more 🙂

These chassis’s present around 550 square inches by 4 or 5 inches deep and I use it all. Lots of iron in my favored designs Short signal path up top but the power supply is spread out some. I live away from the city so FM/ radio is no big deal. Amps are quiet.

 

[pbpix]

In hindsight I could have put the tubes closer too each other. But I'm not too concerned about short wires generally and because the media player is inside, the signal path is shorter than most systems.

What type of media player is that?
Why did you need to use wooden compartments?
Do you want to show your schematic?