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Goldwood GT-1005 Wide Dispersion Piezo Tweeter
Are these easily damaged by curious children?
pencil pokes yea , liquids yea, curious little fingers no
Date published: 2014-04-14
Do these need crossovers in a 2way setup?
I bought these and some "GRS 10PF-8 10" Paper Cone Foam Surround Woofer" to put in an old school box I got off the curb. These are for my woodshop so they don't have to be great just OK. Question. Since they are Piezo... I don't need a crossover or a Capacitor/resistor thingy right? I can just wire them directly to teh + and - on the back of the box? same with the woofer? Just being hooked up to a beautiful but dodgy old wood veneer pioneer amp... maybe 35 watts per channel tops. Thanks!
I think they'll be OK for use in your woodshop. The woofers may "honk" a little at higher frequencies but you'll have to hook it all up and run it for a while until all of the drivers are well broken in and then judge whether you should look into a crossover, either low pass for the woofer or high pass for the tweeter, to clean up the sound. The one caveat I do offer is that a piezo tweeter looks like a capacitor to the output stage of an amplifier. The impedance of a capacitor goes down as frequency goes up. You may wish to consider a 10 or 20 ohm resistor (rated 10 watts or better) in series with the tweeter to ensure that the amplifier remains stable at all times. Many amplifier topologies don't like highly reactive loads. Also, the series resistor may help to match the efficiencies of the woofer and tweeter a little closer, and that should help the sound quality.
Date published: 2012-12-30
I am trying to use these tweeters to emit a constant tone from a tone generator. I'm trying to get as much volume as I can.I'm using an Onkyo SR701 receiver to power them.I was told to put a 4 ohm or 10 ohm 10watt resister parallel across the posts of the speakers.The protection circuit in the Receiver kicks in with the volume at about 80%. I want to go louder.Also, the resistor gets very hot.I was told I'm wasting energy by using a resistor and I should just use different tweeters. I'm not experienced enough to know if that is true.Should I try different resistors? Or would I get better volume out of some 8 ohm tweeters? I'm trying to keep this as low cost as possible. What do you guys think?Use different tweeters? Which ones? Would like to keep total cost under $10 per speaker or tweeter+resistor.
3.3 uf non polar cap to feed 10 ohm non inductive and 2 0hm resistor... then 10 ohm to ground and the 2 0hm to + of the horn an additional 20 watt 20 ohm to soak up the residual power and load the amp... a siren type amp may better serve you along with a larger voice coil type horn,, i see burned parts in this project with out knowing all paramerers
Date published: 2013-05-15
How would I attenuate this tweeter to match db level of Visaton 6.5" Woofer 4Ohm (part #292-566). The drivers are in a .71 cubic foot enclosure with full signal going to the tweeter and lpf at 3700 going to 6.5" driver. Right now I have no filter going to visaton, so it's full signal going to both drivers and they sound good together there is just an overlap of signal 3700 and up to top range of 6.5" driver. When I add the lpf at 3700 to visaton the tweeter becomes more (too) noticable and doesn't blend as well. How would I attenuate the tweeter to match the other driver in this setup?
You will have to put an 8 ohm resistor in parallel with the piezo and wire an L-Pad in line with it. Please see the diagram.
Date published: 2014-02-18
Is this an 8 ohm tweeter?
Piezo tweeters do not have impedance loads.
Date published: 2014-02-18
how ohms is this tweeter?
Being a piezo tweeter this does not have an impedance.
Date published: 2014-03-26