Piezobee -a very simple and cheap power filter - diyAudio
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Old 2nd April 2009, 12:32 AM   #1
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Default piezobee

Piezo transducer guitar pick ups.

Bybee like???
absorb stray naughty sound damaging electrons ??

cheap and easy to buy from ebay for pennies.

Works when I add them after the voltage regulator on the positive line. The more of them i add the better the sound gets.

see photo attached,I removed the wire attached to the metallic side and re soldered it onto the opposite side onto the inner disc with the magical properties. I keep the two wires on this disc as far apart as possible so the signal has further to travel and can reap from its cleansing powers. I then wire it up onto the positive supply in series with it.
Used on the shigaclone with surprisingly good results.Only 8v mind. Not tried on other equipment as yet or higher voltages

No April Fool I promise you
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Old 2nd April 2009, 02:07 AM   #2
Eva is offline Eva  Spain
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One vote for April fool placebo effect
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Old 2nd April 2009, 02:17 AM   #3
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I once made a 'guitar' with some scraps of wood,and some piezo discs as pickups. I soldered the (bailing wire)strings right to the discs.They worked great,and had a pretty 'hot' signal level,I could plug it into the back of a HT receiver,using the phono input and get some nice overdrive distortion.

Has anyone ever measured one of these,to see what kind of capacitance they have? I'd guess it's pretty low?
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Old 2nd April 2009, 02:24 AM   #4
DaveM is offline DaveM  United States
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Do you mean something like these.

http://cgi.ebay.com/10-pcs-35mm-Piez...3286.m20.l1116

By the way, this was a break off of the shinga clone thread. So April fools it is not.

The specs from a different ebay listing were:

1. Plate material, stainless steel
2. Max input Voltage, 30 Volts peak-to-peak
3. Resonant impedance, 350 Ohms Max
4. Natural resonant frequency(Freely suspended), 4 KHz +/- 500 Hz
5. Capacitance at 1 KHz, 22 nanoFarads +/- 30%
6. Plate diameter, 20.0 mm
7. Plate thickness, 0.1 mm
8. Ceramic piezo diameter, 15 mm
9. Total thickness, 0.22 mm

22 nano farads. Yeah, I guess you could say they were low capacitance.
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Old 2nd April 2009, 08:37 AM   #5
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yes DaveM thats the one

Placebo effect??? but then that's what this forum is for..... discovery . This is an extremely cheap one that anyone can try and see for themselves if it works or not.

In my system, switching back and forth I perceive that they add more natural tonal warmth and improve dynamics. Not night and day, but then are BYbees perceived to produce night and day results???

Please note I use high quality earphones with an OTL amplifier which are highly revealing and show up small changes very easily, but from personal experience this should be reproducible in a very high quality formal room system set up as well.
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Old 2nd April 2009, 08:48 AM   #6
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here are two piezobees in my shigalone power supply.
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Old 2nd April 2009, 05:19 PM   #7
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results with the DAC were not as good
added a third piezobee to the shigaclone and heard even more improvement with what i believe was a lowering of the noise floor and extra details coming through
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Old 2nd April 2009, 05:21 PM   #8
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mind you the results from adding in the dip monarchy were also negative on the sound of the DAC, so the DAC is much more temperamental. The DAC is the VALAB 1543 with numerous mods added to it.
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Old 6th April 2009, 12:38 AM   #9
DaveM is offline DaveM  United States
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Check this stuff out.

http://www.omegapiezo.com/strip_actu...quivalent.html

If more is merrier with this stuff, here is the way to get it. This company also makes the bare piezo without termination. In other words, they make what is the bybee filters. If we had a bybee filter to disect and reverse engineer, we could have them custom made by these guys. Hmmmm. Group buy? Just my enthusiasm getting ahead of me.

It might be worth trying to get a sample of their large strips. I will see what I can do tomorrow.
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Old 6th April 2009, 08:23 AM   #10
ahaja is offline ahaja  Poland
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>audiojoy
Hello.
I sent you an answer for your question about kit, but unfortunately it came back to me. Something is wrong with your email. Let me know about it.

Regards Krzysztof

Ps. Sorry for Off topic.
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