Howdy,
I am a Electrical Engineering student taking an Audio Engineering class. For my final project, I have to build and test something and I had chosen power amplifier. I had found a model of one of apexaudio design on Qspice and found this forum. After days of researching, I found the apexaudio model Ax11 is probably the easiest for me to build. I decided to find all the potential models to compare because many model have obsolete components or a little to complex. However, the still do not know how to use the search system more effectively. I can only search for keyword and not attachment name. A lot of time people, like apexaudio, posted the file and does not mention the name, so searching will not show up. After days of finding models of AX11, I am getting tired and out of time for the final project. I wish there is a better way to search more effective and not have to scroll through 700 pages.
Any how, I want a simple AX11. I am struggling with the power supply though. I do not have knowledge on that, and many of the symbol on the schematic doesnt make sense to me (PGND, PRO, squigglely diode, a square with diagonal cross, a switch with dotted line). I am thinking of just using 2 (20V, 3.25A) laptop power supply in series to get +-20V, but not sure if that would work or the power it is delivering.
I have a Technics SB-X1 that is 6 ohms, weird, and 50W peak. Even if I build the Ax11, I still overpowered that speaker. Is there a way to lower the power?
Anyway, I hope that after this my post on the apexaudio thread will get some help.
Nice to meet you all.
I am a Electrical Engineering student taking an Audio Engineering class. For my final project, I have to build and test something and I had chosen power amplifier. I had found a model of one of apexaudio design on Qspice and found this forum. After days of researching, I found the apexaudio model Ax11 is probably the easiest for me to build. I decided to find all the potential models to compare because many model have obsolete components or a little to complex. However, the still do not know how to use the search system more effectively. I can only search for keyword and not attachment name. A lot of time people, like apexaudio, posted the file and does not mention the name, so searching will not show up. After days of finding models of AX11, I am getting tired and out of time for the final project. I wish there is a better way to search more effective and not have to scroll through 700 pages.
Any how, I want a simple AX11. I am struggling with the power supply though. I do not have knowledge on that, and many of the symbol on the schematic doesnt make sense to me (PGND, PRO, squigglely diode, a square with diagonal cross, a switch with dotted line). I am thinking of just using 2 (20V, 3.25A) laptop power supply in series to get +-20V, but not sure if that would work or the power it is delivering.
I have a Technics SB-X1 that is 6 ohms, weird, and 50W peak. Even if I build the Ax11, I still overpowered that speaker. Is there a way to lower the power?
Anyway, I hope that after this my post on the apexaudio thread will get some help.
Nice to meet you all.
I'm a bit confused that being an Electrical Engineering student making his final project has issues reading a schematic and a power supply. Without the schematic you are looking at it is difficult to say more.
The power rating of an amplifier is what it can maximally deliver into a certain impedance. It is you by selecting the volume at which you play that will determine how much power it will send to the speaker. And then that power is for the full audio range. If you have a multiway speaker that power will again be divided between the separate speakers depending on frequency content and crossover.
The power rating of an amplifier is what it can maximally deliver into a certain impedance. It is you by selecting the volume at which you play that will determine how much power it will send to the speaker. And then that power is for the full audio range. If you have a multiway speaker that power will again be divided between the separate speakers depending on frequency content and crossover.