ZA5.3c - eval
I finished building the Zaph 5.3c (center channel) speaker several weeks ago and have been evaluating it ever since. I chose this speaker so I could get an idea of the general sound that the ZA5.5tt might provide, which is what I would really like to build. The speaker sounded great for movies but when I used it as a front speaker for music, I found it to be a bit off. It exhibited a slight “Hall” effect sound. I suspected it was the woofer since I’ve used this particular tweeter before so I disconnected the tweeter and the “Hall” effect was still present. I also removed one of the speakers in the enclosure and it was also present. I analyzed the Xover suing Circuit maker (student version) and it had plenty of rejection near 9KHz, which is where the amplitude peak resides. Not sure where to go with this. Maybe increase the rejection further by7 adding another pole? Any help would be appreciated.
The center channel will generally sound horribly forward if used as a main speaker. If you really want to try it used as a left or right system, it needs a crossover that provides more attenuation to the midrange, which is what the standard version does. However I would describe the sound of the center version used as a main more along the lines of bright, edgy or forward. A description like "hall effect" is nearly impossible to troubleshoot, but if I had to guess, it describes a null in the response which can only happen when one of your drivers is wired out of phase. If you seem to have sufficient bass (for a center channel with tapered off bass response) it's likely the tweeter is out of phase.
Also be aware that it's difficult to judge a single mono speaker as a main. It may well be that there is no real issue.
Let us know what you find out.
Thanks for responding to my post. Yes, "hall effect" isn't an easy descriptive to go by but I purposely stayed away from referring to the sound as bright or forward since I've listened to speakers that were categorized that way, which isn't what I believe I'm hearing. I switched the tweeter polarity and I still could hear it. I think you're right about nocking down the midrange a bit more. I probably won't be able to get to it for a while. I'll let you know how I make out.
Medeirosp, you can use a AA battery and make sure your woofers are labeled properly and double check the finished speaker the same. A quick hit of the battery and seeing if the woofers move outward will get you down to just verifying the tweeter. An out of phase tweeter is a bit harder, but when you have2 side by side very easy to hear it.
I built a pair of 5.3' using the standard crossover, but I did build using the 5.3c enclosure (wanted them front ported).I had planned on using these to test some enclosures which I knew might end up against a wall, or next to some larger objects. I planned on ordering a 2.3c to round out the set, I'll have to order 2 or an extra crossover,and see how it sounds.
They are a great sounding speaker, and the price is definitely right.
Good luck, let us know if you change out the crossovers.