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Dayton Audio RS28A-4 1-1/8" Aluminum Dome Tweeter
Are those SPL (sound pressure level) numbers? If so, they are much lower than the 94.4 db on the specification sheet at the Parts Express website. One of the decimal was red marked. What does it mean? What was it matched to?
The manufacturer measures these tweeters with 1 watt as opposed to 2.83 volts as specified on our spec sheet. This will account for the difference. The checked decimal number is the tolerance. For example, if the number in the box is 90 and 0.4 is checked or marked, that tweeter sensitivity is 90.4 dB at 1w/1M.
Date published: 2014-11-20
On each of the speaker, there is a sticker with a bunch of number on it? A single 2 digits on the top row and a series of decimal numbers from .6 to -.6 below. The 2 digits number above the row of decimal numbers is 90 on one and 88 on the other.
These numbers represent the sensitivity tolerances of each driver. For example, if one tweeter reads 88 in the box, and 0.4 is checked, that tweeter is 88.4 dB sensitive.
Date published: 2014-11-17
Does this, as well as most other drivers and tweeters sold come with mounting hardware?
Unfortunately this along with most other drivers do not include mounting screws.
Date published: 2014-08-12
CAN it be à good replacement speaker for Energy Pro monitor 22?
Unfortunately we do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, email@example.com or 800-338-0531 x1.
Date published: 2014-07-22
How much power can this tweeter take at 1500hz 4th order acoustical?
If you look at the download sheet - you will see two curves. One for frequency response which shows the driver to be pretty flat to 1500 hz. The other graph, however, shows impedance/phase where it begins to cause all sorts of problems at around 2000 hz. So if you were to use the driver below 2000 hz, you would need an additional section to your crossover to compensate for the phase issue. It is called a Zobel. A 4th order network is the best audiophile crossover you can build for many reasons. I suggest 2000hz as your crossover point. Now - how much power can the tweeter take? The specification is 100 watts RMS continuous. Nominally in a home theater system or louder music system - the tweeter may see 10 to 25 watts continuous with peaks of over 100 watts for transients. If you want to push 100 Watts continuous - that is more for a PA application and would require a different driver with much higher efficiency - in the order of 100db 1w/1m minimum... This driver is an audiophile driver with a corresponding efficiency. If you look at many high quality factory built speakers - they will say 88 or 89 db efficient. Hope all this info helps... Good luck with your project.
Date published: 2014-11-20
face plate mounting
what is the spacing of the faceplate screws not the mounting holesie holds the driver to the faceplate
The faceplate mounting screws are 42mm from "corner to corner" and 60mm diagonally.
Date published: 2014-03-14