Improving the performance of the N-Audio/Behringer PP400 phono preamp with a few modifications. You can purchase this phono preamp for around $20 on ebay, aliexpress, etc.
Пікірлер: 18
@Elecifun Жыл бұрын
Even though we would never be able to hear the goodness of the record played back. I think YT sucks for making you remove the audio.
@TheStuffMade Жыл бұрын
Thanks, yeah this was a bit annoying because YT originally approved the video with the music sample, but then 2-3 weeks later I got a copyright strike. I even have some early videos that got a copyright strike years after they were published.
@EngineeringVignettes5 жыл бұрын
Nice mods. I have always liked the idea of taking lower cost products and beefing them up to improve performance. A comment on the music though, it seems that the least risky play time for music is 6 seconds or less now a days, to prevent flagging from the dreaded youtube music algorithm. Cheers,
@TheStuffMade5 жыл бұрын
Thanks, yeah agree, it's often possible to make a cheap product perform quite well with just a bit of engineering. Actually in my experience it's quite common to see high end products that are poorly designed in an attempt to differentiate themselves and claim unique "technology" :) I did get struck by the youtube music copyright claim even before I release the video, but it's not a problem because they don't delete the video anymore, they just let whoever claimed the copyright take all the ad revenue. That's fine with me, I just make these videos for fun.
@doctordorkmeister53305 жыл бұрын
nice work yo
@TheStuffMade5 жыл бұрын
Thanks
@jameswarren18315 жыл бұрын
If these company’s consulted with you for a couple of hours the products in this world would have far better performance.
@TheStuffMade5 жыл бұрын
Thanks, yeah it's a bit strange they didn't put more effort into checking a product they've probably sold 10s of thousands of. First I thought maybe someone put in the wrong components, but nope, the component values are exactly what is written on the board.
@user-zc6sv5he6q Жыл бұрын
Hello, thanks for the video. I'm a beginner. Therefore, I would like to know. 1. To begin with, I want to change the 2k resistor to 1k. How much power should the resistance be? 2. Then I want to change the capacitor C4 to C11. I have a question. Can I use a 22 mf capacitor or should I definitely do 14.7? What voltage of capacitors should I use? 3. I also have a 50Hz background. I reduced it when I connected the ground. but still heard. I used a separate battery - the result is the same. Could the capacitors be faulty? which of them can be replaced? what type should they be? Sincerely, thank you. I am just learning.
@theadamtron3 жыл бұрын
Hello! Very keen to make this modification. Being a novice when it comes to electronics is there a list of components and what type of components would be best for the best results? Thanking you.
@fabgry45462 жыл бұрын
is there maybe a list of components?
@misterhilario3 жыл бұрын
Hi. I bought a preamp phono like this, but I had a ceramic pickup and the sound was too saturated. Now I know this pre amp is for magnetic pickup. Can I make a mod on this preamp to use on my pickup?
@TheStuffMade3 жыл бұрын
Yeah, usually ceramic cartridges have much higher output and need an amplifier with input impedance up in the mega ohm range. I haven't tried it but doing the following modification should work for changing this preamp into one that will work with ceramic cartridges, no new components required: 1. Remove the two resistors marked 47K (see 4:45 for reference) 2. Move the 2 resistors marked 1M to where the 47K used to be. 3. Short the pads where the 1M resistors used to be. 4. Remove the two capacitors marked 4.7uF/25V (3:54 for reference) This will change the gain and increase the input impedance. Hope this helps, Cheers, Jake
@doobydub83635 жыл бұрын
Thanks for this! How can I further mod this preamp to make it flat (non-RIAA)? Many thanks in advance.
@TheStuffMade5 жыл бұрын
You can just remove the 4 green capacitors (2 x 3.3nF and 2 x 820pF) but what would you use it for without the RIAA equalization?
@doobydub83635 жыл бұрын
Many thanks! I would rip CD-4 records to digital files (at half speed). They have very high frequency modulations that get attenuated with RIAA. Thanks again!
@TheStuffMade5 жыл бұрын
Sounds like an interesting project. You might need to lower the gain, you can do that by replacing the 2 x 1 Meg resistors with a smaller value, perhaps something around 20-100k
@doobydub83635 жыл бұрын
Many thanks! I will eventually materialize this project, but it will take a while.