Greetings I did som Metalwork today.. So what amp to put in the the box ?
My rails will be +/- 30Vdc and i will be using 12x36000Uf caps
My rails will be +/- 30Vdc and i will be using 12x36000Uf caps



I did assable the box today, the heatsink is not a slngle pice but 4.. Im gona use a copper plate to join them togetter.. gonna finish the box tomorrow
What kind of amp did you want?
😎
Greetings Nelson
Yes thats the question, Have been looking at the Aleph 5 amp .. I want something that can drive my 4ohm speakers (Audio Physic Sitara) and Im sure Aleph 5 will do the job exelent
I don't ordinarily recommend Alephs for 4 ohms unless
they are biased extra high. Not enough control for many
of the 4 ohm loads, and usually more distortion than I
want.
As a rule I like to use push-pull followers for 4 ohms -
Class A of course.
😎
they are biased extra high. Not enough control for many
of the 4 ohm loads, and usually more distortion than I
want.
As a rule I like to use push-pull followers for 4 ohms -
Class A of course.
😎
finished the Aleph PCB's ten minutes ago 🙂 If im not happy whit the result i will start all over again with a Class A push-pull amp
Class A is fun and HOT!! 🙂 , did power up the Aleph 5 boards today bouth channels is ok but I did measure DC offset channel1, gives me about 20mV and channel2 is about 50mV, Im verry habby about 20mV but is 50mV ok ?
everything under 100mV is considered OK
in any case - less is more 😉
Yepps, but still a litle annoying, I did match every single resistor/transistor for bouth channals to be 99% the same 🙂
replace R11 with 180R fixed resistor and trimpot of 50 to 100R (both in series)
that's cure for offset
that's cure for offset
Attachments
Last edited:
yes.. I dident ground inputs when i did measure ofset, i gona measure again whit grounded inputs
yes !
now you need some serious speakers , not these fifi ones
that amp is just from another story ........... or is it fairy tale ?
😉
offset issue solved ?
now you need some serious speakers , not these fifi ones
that amp is just from another story ........... or is it fairy tale ?
😉
offset issue solved ?
- Status
- Not open for further replies.
- Home
- Amplifiers
- Pass Labs
- what to do whit this ??