Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email email@example.com
for a prompt reply.
GRS PZ1188 Piezo Horn Driver Similar to KSN1188A
Are these GRS piezo horn drivers "seen" by the amplifier as a capacitor as were the original Motorola/CTS designs? In the past John Risch's advice was to use a 22 Ohm parallel resistor and design a single section filter accordingly. Thanks.
Yes these will act as the same type of load as the Motorola or CTS piezo tweeters.
Date published: 2016-01-14
According to the specs shown, this driver's frequency response picks up at 800 Hz. That seems awfully low for a piezo. Is that correct or a typo?
That is likely factoring in the Fs of the driver. I would not cross this any lower than about 1,500 Hz.
Date published: 2014-03-20
Does this driver have the same protection circuitry as the orginal Motorola/CTS design?
The original design used a protection circuit with a resistor and thermal breaker paralleled with a tiny light bulb. Does this design have any protection circuit at all or is it just the piezo element?
This driver does have built in protection similar to the original CTS driver.
Date published: 2013-08-28
Can I use this tweeter and achieve good fidelity in the following configuration? See additional details.
2 class D amplifiers 1 powering a sub woofer the other powering a mid/tweeter coaxial. (Mid driver is Beta-8CX with this tweeter).I would integrate the Berhinger Ultra Drive as a 2way x-over and assume the tweeter can be properly attenuated with a resistor orL pad.If this makes sense any suggestions for passive tweeter control would be helpful.
These will work fine for the application but fidelity is a matter of opinion. There are many people who like the sound of piezo tweeters and many others don't. For an inexpensive high frequency option they are hard to beat. If you want to use an L-pad with this, you will have to wire an 8 ohm resistor in parallel with the piezo and any 8 ohm L-pad will work.
Date published: 2013-05-06
Can this driver be used with a GRS PZ1025 2" x 6" horn?
I used the Goldwood GT-400PB and Eminence Emitter EM:200S horns in my PA application. They're the only ones that I tried, so I can't give any comparisons. I haven't taken any sound measurements, but, for my requirements (Rock Blues Band), they seem to do the job well enough.
Date published: 2013-01-01
Using a piezo driver wth a x-over
If I am going to use a piezo driver in a system with a 3 way passive x-over should I wire a resistor parallel to the piezo?
Yes you will want to wire an 8 ohm resistor in parallel with the driver.
Date published: 2012-12-05