I like those huge VU meters. I was planning on using similar ones in my design but I couldn't find any decent looking ones. Where did you buy these and where did you get the driver board from?
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Hello guys.
A preamp/headphone amp is undergoing development. Here is the thing on perfboard and some preliminary test results. Bias 20mA. Power supply is unrregulated half-wave rectified +/-17V.
Let me know your thoughts.
More coming soon.
Hello guys.
A preamp/headphone amp is undergoing development. Here is the thing on perfboard and some preliminary test results. Bias 20mA. Power supply is unrregulated half-wave rectified +/-17V.
Let me know your thoughts.
More coming soon.
Attachments
I know them but they don't have any decent ones.
A couple of years ago I bought some from Hoyt. This is a company based in the US. They have good VU meters; they even have calibrated ones. But I would like meters where I can customize the back panel.
I know, I'm a difficult guy...
Wskaźnik Nissei [P-134NO] - Sklep modushop.pl
I bought these.
Very nice and huge but do not have their own lighting.
I put COB LED Panel Lamp with a resistor
I bought these.
Very nice and huge but do not have their own lighting.
I put COB LED Panel Lamp with a resistor
Nice! Thanks for sharing.
Do you know if it is possible to open them? I would like to remove the black inlay and use a white background (with black lettering).
I prefer my audio gear in silver color
Hello guys.
A preamp/headphone amp is undergoing development. Here is the thing on perfboard and some preliminary test results. Bias 20mA. Power supply is unrregulated half-wave rectified +/-17V.
Let me know your thoughts.
More coming soon.
Your measurements seem a bit odd: the source measurement has a bit worse (very tiny bit, but still) noise floor than the DUT. Also, the DUT has slightly less distortion than the source.
I have no need myself for an headphone amplifier or analog preamp but I'm curious to see what you are up to
That's because source snap has a 137dB range while pre-out snap has 140dB. My mistake.
Noise floor is at same distance from 0dB in both cases, but the smaller range setting makes source out to have a higher noise.
Lower apparent harmonic level in pre out can be due to phase difference between the same harmonics from source and pre-out Scheduled for check how much off phase the individual pre harmonics are relative to source harmonics.
I have no need myself for an headphone amplifier or analog preamp but I'm curious to see what you are up to
Thanks. I'm trying to add some fun and flexibility to the pre. As with the amps, it will have trimmer(s) for setting certain aspects of its behavior.