Dual stage would be more precise...
Anyway, the first opamp is a voltage follower, meaning it gives at it's output the same voltage as it's input, just at a lower impedance.
To put it shortly, it lowers the impedance of the source signal.
I am not quite sure why there would even be such a requirement, 10k is a reasonable load for any signal source.
PS: I do not know if it was intended so or not, but the voltage spread of the VBE multiplier is way down, even for class B.
Voltage follower yes, active filter no!
The 100khz filter part is all passive, a simple RC filter after the follower.
The 100khz filter part is all passive, a simple RC filter after the follower.
Mile, do you by any chance have a speaker cabinet layout for a 2 way PA speaker, I have a Hybrid branded 60W 1 in compression driver and a 12in Hybrid branded woofer. It will be used as a solo speaker for PA addressing a medium sized crowed and some music when we BBQ as a work group.
I dont have the datasheet for the woofer, this is only data I found
Hybrid HT-60 Compression Driver:
1″ Exit
8 Ω
60W RMS
50mm Aluminium VC
107 Db 1W/1M
Freq: 1800-19000 Hz
Hybrid 12H400 Woofer:
Impedance 8 Ω
Power (AES) 400W
Voice Coil 100mm
Magnet 123 Oz
Average Sensitivity 97 dB 2.83v @ 1m
Frequency Response 36 – 2500 Hz
regards, any help would be appreciated
I dont have the datasheet for the woofer, this is only data I found
Hybrid HT-60 Compression Driver:
1″ Exit
8 Ω
60W RMS
50mm Aluminium VC
107 Db 1W/1M
Freq: 1800-19000 Hz
Hybrid 12H400 Woofer:
Impedance 8 Ω
Power (AES) 400W
Voice Coil 100mm
Magnet 123 Oz
Average Sensitivity 97 dB 2.83v @ 1m
Frequency Response 36 – 2500 Hz
regards, any help would be appreciated
hi, and excuse me if I ask you a question already discussed, the discussion here is so vast ... I have some toshiba 2sc5200 / 2sa1943 transistors purchased for a long-abandoned project, do you know suggest some qualitatively top projects where to reuse them ??? thank you
hello .. I did not know the project .. are there schemes or gerber files ..info? .. okay with 4 ohms? thank you
That's funny 🙂
@Mor if you are searching for quality and performance you will not find it in this topik.
For AX14 use the wiring guide posted, It's a great amp.
Only people who didn't follow this wiring diagram complain, because they don't know how to read instructions.
Only people who didn't follow this wiring diagram complain, because they don't know how to read instructions.
Plenty of Miles's stuff works great which I have built , amps, preamp's and protection. No complaints from my side !😉
Hi Ades,
Yes you can, with lower rail , say 35V max for 4 ohm.. 42 volts max for 8 ohm.
Regards
Prasi
Yes you can, with lower rail , say 35V max for 4 ohm.. 42 volts max for 8 ohm.
Regards
Prasi
How did the amplifier turn out?
Are there any finished pics somewhere?
Thank you,
David.
Power Supply Quasi
Hi Quasi
I have a few questions about the psu in the picture,
Technical Data:
It will be used in Class A amp circuit. (hiraga le monstre)
Capacitor: 4 * 22000mf 16v
Ac Input: 0-10 / 0-10 VAC
According to these data, what should be the resistance values of R1, R2, R3, R4, R6, R7.
Hi Quasi
I have a few questions about the psu in the picture,
Technical Data:
It will be used in Class A amp circuit. (hiraga le monstre)
Capacitor: 4 * 22000mf 16v
Ac Input: 0-10 / 0-10 VAC
According to these data, what should be the resistance values of R1, R2, R3, R4, R6, R7.
