Amp Camp Pre+Headphone Amp - ACP+

[peppennino]

Weird question: In bedroom ACP and headphones would be the main setup, but I also have a pair of Fostex BLH for occasional low volume listenings: what compact (and good matching) fleawatt amp could I build/buy for driving them? The rest of the chain is Raspberry/Volumio and Modi 2.
Thanks

 

[RafaPolit]

No idea about Fleawatt, but have you considered the ACA? I really love mine, and if you have very efficient speakers and it is, as you mention, for low level listening, it's a real treat!

 

[Zen Mod]

yup

 

[peppennino]

Thanks Rafa.

ZM: Yup is for "go for ACA" or it is just for "it is really a weird question"?

 

[Zen Mod]

learn your own slang, wakootalian!



means - yeah, go for it, affirmative, VLF!

 

[billyk]

I vote for an ACA as well.

 

[peppennino]

I know only pizzapastamandolino

 

[thomasnadeau]

Why was my question quoted?

The forum software seemed to not let me select another quoted entry after I selected this one. No idea.

I was replying to the question about how to determine the CCS's resistor value based on the j113 you have in hand.

--Tom

 

[thomasnadeau]

No idea about Fleawatt, but have you considered the ACA? I really love mine, and if you have very efficient speakers and it is, as you mention, for low level listening, it's a real treat!

I definitely recommend the ACA too. Built the latest stereo version and you'll be very happy with what you hear. Its also small/compact so likely will suit your room situation.

--Tom

 

[Cinco]

Weird question: In bedroom ACP and headphones would be the main setup, but I also have a pair of Fostex BLH for occasional low volume listenings: what compact (and good matching) fleawatt amp could I build/buy for driving them? The rest of the chain is Raspberry/Volumio and Modi 2.
Thanks

For low level listening the ACP+ alone may be all you need. It's about 1/2 watt.

Plug your Fostex speakers into the headphone jack and see what you think.

 

[Gregho]

IRF630

Is the IRF630 suitable to replace the IRF610 in this project?

 

[Zen Mod]

you got reply in other thread

 

[adydula]

Well seeing how I have a PassLabs HPA-1, a Whammy, and the store just sent me an email stating the Full kits are in stock....I ordered one ACP + !

I have built the Noir and several other DIY amps and love to build stuff and play...having a full kit with all the parts makes life easy...than the constant searching for stuff at Mouser and Digkey, Newark etc....

Look forward to this simple design!

Thanks Poppa !!

Alex

 

[Gregho]

Is the IRF630 suitable to replace the IRF610 in this project?

Sorry, actually i want to know if the IRF620 is suitable here.

 

[Zen Mod]

same story

yes

 

[Gregho]

Another thing: is 2sj74 V, with idss around 11.2 ma adequate? Thanks.

 

[Dennis Hui]

Sure.

 

[adydula]

Got the kit from the store yesterday, soldered it up, checked out ok first time....de-fluxed and playing now with D8000 Pros....awesome little amp.

Temps on Q5/6 are 115 - 120 deg F.

Dead silent here.

Nice simple, quick project...now to hunt for a nicer knob.

Love the naked look, makes people ask what is this thing and how does it work.

Alex

 

[adydula]

R4 drops are 1.23 and 1.20.
so this is approx .0096 and .0098 ma.

Close enough.

 

[peppennino]

For low level listening the ACP+ alone may be all you need. It's about 1/2 watt.

Plug your Fostex speakers into the headphone jack and see what you think.

This seems interesting for bedroom. My Fostex have the same efficiency of Papa's coaxials used in test reported in ACP pdf... If 8ohm load doesn't stress the mosfets, I think I could live with