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Piezo Film Pickup



 
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4 sizes available starting at $3.00

Quantity in Stock:55
Product Code: 119


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Description Technical Specs
 

For those who want to wire up their own contact pickups, we offer these piezo films in four sizes:

3/4" x 3/8"
1-1/4" x 1/2"
2-1/2" x 1/2"
6" x 3/4"

The three larger sizes (1-1/4, 2-1/2" and 6") come with 12" wires attached, and you can easily solder your lead wires to these wires ( full instructions are included).

The small size (3/4") doesn't have the wires; instead it has a pair of small metal terminals. You can solder to these, but this requires great care to avoid overheating; alternatively you can attach to them using conductive epoxy (again, instructions included).

Piezo-electric film has several advantages over traditional rigid contact pickups: It shows an extraordinarily broad and flat frequency response; it is free of self-resonance; it mounts readily on all sorts of surfaces whether flat or curved without inhibiting vibration; it can extend over a larger portion of the vibrating body to give a more balanced response; and it is sensitive enough to capture some of the air resonance tone when mounted inside the soundboard of instruments with air chambers. The actual piezo film is coated with a thin layer of tough, flexible polymer, so it makes for pickups that are lightweight yet durable. It can work on any instrument with a solid vibrating surface, such as string instruments with soundboards, drum heads, marimba bars, etc. One disadvantage of the films: in some circumstances they've been found to produce a slight hum.

How to choose which size? You might be surprised at how well the small piezo tabs (3/4" x 3/8") can work, but larger films will usually produce a more balanced response. Some customers like to use the largest film that there's room for on the vibrating surface they intend to apply it to. However, in some cases you might prefer the sound of the 2.5 inch films even when there's room for the 6 inch, because you can expect the 2.5 inchers to have a slightly brighter sound than the 6 inchers. (The reasons for this have to do with the acoustics of short wavelengths over large surfaces.)


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