legal eagle
Sound Hound
Fact, or snake oil?
After all, they work at a frequency we can't really hear, especially with our old ears.
After all, they work at a frequency we can't really hear, especially with our old ears.
I just turned my 2405's into supertweeters removing the "veil." Makes a big difference, especially in cymbols and percussion. But also adds intelligability and air.
Take a cap ~0.47 - 0.85 mfd and connect it to the crossovers pos input (amp output). Run a 4 ohm resistor in series with the cap, after the cap. Run a line from this resistor to the tweeter's pos post on the crossover. Put a 30 ohm resistor at the junction of the cap and 4 ohm resistor and run the other end to ground. This provides a high frequency by-pass, assuming that you have some attenuation in the tweeter network. Mine is all done at the external terminals without even opening the cabinet.
Modeled here using a 2 ohm resistor (a bit too bright) and a 0.47 mfd cap, but you get the idea. You would need to play with the values a bit to see what works best for what you desire, but the 30 ohm resistor works well to ground.
Actually, the attenuation at the high end is due to an in series 0.1 mH choke in the modeled (and original) circuit, that I found not to be necessary and removed. (This actually makes it a band-pass rather than a high-pass filter.)
Define super tweeter, then we'll be on the same page here. I define it as an auxiliary tweeter that extends past the range of an existing tweeter in the system. In addition it has extension that exceeds the norm, well past 20khz say.
Hi toddalin, I'm a bit of a rookie here with crossovers The first schematic is what I currently have now. Note I have the polarity on the 077 reversed as it seems to sound better that way.
The second is what I think you are describing but I was wondering if you could please confirm I have this right and hope you can make this out. Thanks
View attachment 996089 View attachment 996090
I was lucky enough to get my 9s from the original owner and he had the brochure and owners manual. This is straight out of the brochure says the supertweeter is everything above 10k htz and the regular tweeter goes to 44k I thought it would be the other way around. Maybe someone else can explain as I'm not sure how it works
View attachment 996155 .