Looks quite different.APEX BX22 improved by dragan100. long time ago.
here you go Andrew.
i do not know if someone has already built, so i am assuming its not tested.
i do not know if someone has already built, so i am assuming its not tested.
Attachments
Last edited:
here you go Andrew.
i do not know if someone has already built, so i am assuming its not tested.
Gerbers Dr?
Here you go.
Attachments
APEX BX22 improved by dragan100. long time ago.
Thank you Prasi, If I want to use only two pair of power transistors how much is the voltage that I must put on rails?
Depends on your speaker impedance (load)
+/-65 for 8-ohm and I wouldn’t use at 4-ohms often or at high volume.
For 4-ohm stability and 2-ohm dips I would suggest +/-55Vdc.
You can use higher voltages, but will decrease SOA and dependability. I usually push the limits, but I also don’t mind rebuilding an amp if it blows up.
+/-65 for 8-ohm and I wouldn’t use at 4-ohms often or at high volume.
For 4-ohm stability and 2-ohm dips I would suggest +/-55Vdc.
You can use higher voltages, but will decrease SOA and dependability. I usually push the limits, but I also don’t mind rebuilding an amp if it blows up.
Thank you Mr Mile for your prompt repplay. If I want to use only 2 pair of 2SC5200 & 2SA1943 instead of six, how much should I reduce the supply voltage?
There are something to change (resistors) for what above?
Go to AX20
To build the AX40 should I use the v1.4 gerbers in post #2 of the AX40 build thread? Are those the correct/best/latest?
The top copper has a single arc (looks like to indicate the jumper wire location). Should these be ordered as single or two layer boards at PCBWAY or JLCPCB? I ask since I don't see capture pads on the top copper layer, only the arc for the jumper wire location, so I am not 100% sure.
The top copper has a single arc (looks like to indicate the jumper wire location). Should these be ordered as single or two layer boards at PCBWAY or JLCPCB? I ask since I don't see capture pads on the top copper layer, only the arc for the jumper wire location, so I am not 100% sure.
- Home
- Amplifiers
- Solid State
- 100W Ultimate Fidelity Amplifier