APEX/Dragan100 STUDIO SR100H(hibrid)
if i have time tomorrow i wil do first plug-in...
Nice work...
higher value is output signal (10V/div) and lower value is input signal (500mV/div).
Attachments
SR100 is still on a test_bench and not wired as it should be. when i wire it properly I will compare those two. still,for a really good comparation they should be supplied with same power supply... SR100 is a really fast amplifier judging by 50 and even 70kHz square form test.
higher value is output signal (10V/div) and lower value is input signal (500mV/div).
Nice measurements.
Regards
SR200, Iam testing one pair 5200 1943.
1.5V on resistor 10R instead, 150mA.
45mV on 0.47R 5W.
DC OUT: 0,1 -> 2mV 😎
Thanks apex and everybody!!! 🙂
1.5V on resistor 10R instead, 150mA.
45mV on 0.47R 5W.
DC OUT: 0,1 -> 2mV 😎
Thanks apex and everybody!!! 🙂
Attachments
Last edited:
SR 200 - Query on Input Sensitivity and input impedance
Dear Sir/s,
Kindly share if you have information on these points regarding apex SR 200 power amp.
1. input sensitivity of SR200
2. input impedance of SR200.
This information will help us to have a matching Pre-Amp for this good amp.
Regards,
Samrat
Dear Sir/s,
Kindly share if you have information on these points regarding apex SR 200 power amp.
1. input sensitivity of SR200
2. input impedance of SR200.
This information will help us to have a matching Pre-Amp for this good amp.
Regards,
Samrat
Dear Sir/s,
Kindly share if you have information on these points regarding apex SR 200 power amp.
1. input sensitivity of SR200
2. input impedance of SR200.
This information will help us to have a matching Pre-Amp for this good amp.
Regards,
Samrat
Sensitivity 775mV, input impedance 47k.
Regards
Preamp matching for Apex-SR200
Thank you Sir for quick reply.
My pre-amp has output impedance 1K and gain of 12db, which with a 500mv signal will give 2.0 volts output.
Will this Pre-amp work well with SR-200 AMP DESIGN?
Regards,
Samrat
Sensitivity 775mV, input impedance 47k.
Regards
Thank you Sir for quick reply.
My pre-amp has output impedance 1K and gain of 12db, which with a 500mv signal will give 2.0 volts output.
Will this Pre-amp work well with SR-200 AMP DESIGN?
Regards,
Samrat
Thank you Sir for quick reply.
My pre-amp has output impedance 1K and gain of 12db, which with a 500mv signal will give 2.0 volts output.
Will this Pre-amp work well with SR-200 AMP DESIGN?
Regards,
Samrat
Yes this preamp will work, but I suggest preamp from this thread.
Regards
Hello everybody!! Who has a PCB for this amplifier, please share. Or maybe there is a better version?
This post is PCB > http://www.diyaudio.com/forums/solid-state/173462-studio-reference-amplifier-117.html#post3535896
Thank you 🙂
Apex Audio,
Do we really need JFETs for the CCS's on this FET buffer amp? They are hard to find or expensive. Can you suggest an alternate BJT CCS version that retains 2SK174 and 2SJ74?
Perhaps 2N5551 or 2N5401 can be used?
Thanks,
X

Do we really need JFETs for the CCS's on this FET buffer amp? They are hard to find or expensive. Can you suggest an alternate BJT CCS version that retains 2SK174 and 2SJ74?
Perhaps 2N5551 or 2N5401 can be used?
Thanks,
X
hi, can anyone give an idea that works, I have a 80-0-80Vac transformer but I need to get 100-0-100Vdc how do I do it? given the formula 80v*1,41=112,8vdc.
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