Hello everyone, would like to say your opinion to know what preamflificador recommend me, to be used in subwofer, as well as its range of frequencies that can handle and besides that I can vary to download and upload the bandwidth that can handle, ie , have the preamplifier that handles me from 20 to 250hz and can change it from 10 to 200 hours for an example, besides which amplifier I suggest for this subwofer application and why is the choice of said amplifier, many beforehand and I hope I have given to understand and excuse my English.
..arrived PCB apex AX14. The component values written on the PCB are all correct do I have anything to change?
In relation to the BC547 can I use those with the abbreviation "C"?
Thank you
Hi, nicely done.
Here is schematics and other documents.
100W Ultimate Fidelity Amplifier
No change is required in any component. Follows APEX original scheme.
Only change is inclusion of ground lift resistor and diodes for the input section D6/D7/R23.
If you find any hum, remove those and run a wire from input section ground to PSU ground.
regards
Prasi
Here is schematics and other documents.
100W Ultimate Fidelity Amplifier
No change is required in any component. Follows APEX original scheme.
Only change is inclusion of ground lift resistor and diodes for the input section D6/D7/R23.
If you find any hum, remove those and run a wire from input section ground to PSU ground.
regards
Prasi
Hello, I would like to know if there is a sound difference between apex ax11 and apex ax14. I know that the apex ax14 is more powerful, apart from that, I think the difference in sound quality between them is minimal, but I would like to remedy this doubt because I want to build one of them.
Thank you very much in advance!!
Thank you very much in advance!!
Oh! everything APPEARS to be WORKING. just beginning to be regulated by on the 18th turnover of the resistor! -))) At the very end -) Soon I will collect it and listen.Remained a question. Whether the feedback is 100µf to put 47µf ? Elna Silmic only of this denomination now I have..
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Nice build
Congrats..Nice build..
Can you share the details of your drivers and enclosures?
Regards,
Sumesh
Congrats..Nice build..
Can you share the details of your drivers and enclosures?
Regards,
Sumesh
I would suggest you to build the AX-14 , many happy people have built it and its well documented (through out this vast thread😀).
recently mprivitera has PCBs, so will make you build very easy, if he has spare and can sell a set to you.
.
I may also have PCBs for Apex AX-11 Bimo mod, that simulates well and one of the members who had built it long ago was very happy with it.
Regards
Prasi
P.S. I would also suggest you to look at APEX FX-8 or FX-8 Bimo Mod that many people considered very good. I have built APEX FX-8 and personally I liked it very much. I plan to build APEX FX-8 Bimo Mod version too.
You can download the Sprint file here
https://www.diyaudio.com/forums/att...8607-100w-ultimate-fidelity-amplifier-a40-zip