I've found somewhere in this forum's depths a xls calculator on Single End Aleph designs power, dissipation, etc.. According to it, J, 3, 30 and similar amps have some 32W at 4 ohm impedance.
I've ran Babelfish j Mini on 4 ohm 84dB Visatons (som 8-10W at 4 ohm) and can say, dude, that is the hell of sound both quality and strength.
No worries at all, and no needs for Aleph 5 and other heavyweights, at least for beginning 🙂
There is something special about A class amps in term of output power, it ain't just loud music, it is something that fills the room with sound... You get a feeling amp has double the power than it says in documents. Really unique feeling.
I've ran Babelfish j Mini on 4 ohm 84dB Visatons (som 8-10W at 4 ohm) and can say, dude, that is the hell of sound both quality and strength.
No worries at all, and no needs for Aleph 5 and other heavyweights, at least for beginning 🙂
There is something special about A class amps in term of output power, it ain't just loud music, it is something that fills the room with sound... You get a feeling amp has double the power than it says in documents. Really unique feeling.
it really (power , I mean) depends of Aleph CCS gain , usually called around as Aleph (CCS) AC gain
in layman terms , that's amount of how much upper part of amp (ALeph CCS itself ) is contributing to push-pull operation of output stage
so , if set differently ( and indeed , there are various percentages in various Aleph amps , or generations if you prefer) , said xls file must be edited accordingly
conclusion - that xls file isn't Opinel couteau 😉
in layman terms , that's amount of how much upper part of amp (ALeph CCS itself ) is contributing to push-pull operation of output stage
so , if set differently ( and indeed , there are various percentages in various Aleph amps , or generations if you prefer) , said xls file must be edited accordingly
conclusion - that xls file isn't Opinel couteau 😉
I have a classe A DIY headphone amplifier ( not built from me) and it sounds so nice that I decided to start building hi-fi (using an existing project).
Now I have a Nad S100+S200 that are very good but I am looking from the good sound that I can ear using my class A headphone AMP! That amp is only 0,32 w/32 ohm but it is more power that another class T amp that I bought (1w/32 ohm)!
Now I have a Nad S100+S200 that are very good but I am looking from the good sound that I can ear using my class A headphone AMP! That amp is only 0,32 w/32 ohm but it is more power that another class T amp that I bought (1w/32 ohm)!
Ok. Done the sim. Asymmetric current clipping starts at 2.6A on AlephJ
Nelson was right. I'm getting 13.5W into 4Ohms.
All it needs is one extra output pair to get 30W into 4 Ohms. Or mod aleph ccs or both
I give my full 100% recommendation to build Bablefish J.
It has every feature you want in a diy build, designed from the beginning to be customisable.
It has every feature you want in a diy build, designed from the beginning to be customisable.
just use 240 instead
good enough for sim , at least for what sim is supposed to do - bring some heat preceding real thing
good enough for sim , at least for what sim is supposed to do - bring some heat preceding real thing
There is a common problem from me, regarding all kind of amps mentioned.
It is the matching mosfets.
I'll post some draws for dummies (like me) to show what I understood about matching.
Today I get a DIY makers book so I can study the most important thing that a maker shoud know!
It is the matching mosfets.
I'll post some draws for dummies (like me) to show what I understood about matching.
Today I get a DIY makers book so I can study the most important thing that a maker shoud know!
The Bablefish J is Zen Mods version of the Aleph J.
It is completely customizeable to match any speaker load.
You could use a single pair of IRFP150 or ask Zen Mod to send you two sets of 2 x matched pairs for your setup.
I'd get the 5U case from diyaudio store and bias the amp for around 2.5A to give you max of 5A with Bablefish J. 2A would also be perfectly acceptable. I've found single ended designs love any additional current you throw at them with your sort of speakers.
It is completely customizeable to match any speaker load.
You could use a single pair of IRFP150 or ask Zen Mod to send you two sets of 2 x matched pairs for your setup.
I'd get the 5U case from diyaudio store and bias the amp for around 2.5A to give you max of 5A with Bablefish J. 2A would also be perfectly acceptable. I've found single ended designs love any additional current you throw at them with your sort of speakers.
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Alternately, see the For Sale section for listings where individuals are selling matched pairs of IRFP240. I think there is at least one guy in Europe doing this.
if Babelfish J is in case , one pair of IRFP150 (so , no matching needed) is worth as two pairs of IRFP240
besides that , I had good experience with matched outputs (240/9240 are those he's having ) from member h_a
besides that , I had good experience with matched outputs (240/9240 are those he's having ) from member h_a