Pro Audio Asylum Pro studio recording equipment and music production/industry.

---

[ Follow Ups ] Thread: [ Display  All  Email ] [ Pro Audio Asylum ]

---

[ Alert Moderator ]

---

Re: building keyboard speakers - driver question

Posted by DMW (S) on July 9, 2005 at 09:34:09

In Reply to: Re: building keyboard speakers - driver question posted by Cuppa Joe on July 3, 2005 at 18:45:04:

If you'll send me your e-mail address, I'll send you the pages via e-mail.

I don't know if you know who John Risch is, but I take anything he tells me to the bank, so to speak. The Speaker Builder article tells about the capacitance value of this driver - 1.5 mfd. Most piezos have much smaller values of capacitance. John Risch told me to use an 8 Ohm power resistor across the terminals of that driver, due to the capacitance of this driver. Others piezos should use values of about 16 to 22 mfd, depending on the drivers. Calculate your crossover accordingly. Wayne Parham, another guy whose advice I take, says to not design multi-pole crossovers for piezos that include inductors, unless you are trying to attract birds (ha!). I can also send you a file, in a Word format, with his suggestions for designs. Just remember, this 1188 is a bit different animal than the others.

This post is made possible by the generous support of people like you and our sponsors:

VH Audio

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---