View Full Version : Has anyone toyed with the idea of upgrading or replacing the Tweets on their old HLS

08-30-2009, 02:59 AM
Has anyone toyed with the idea of upgrading or replacing the Tweets on their old HLS bookshelves, i have about 6 of them and the matching center .. their good at moderate volumes, and i like the sound, but any louder and that tweeter starts to distort, this is my computer surround sound setup, i have them hooked up to a panasonic sa-xr 57 digital receiver that sounds wonderful with them.

09-08-2009, 07:43 AM
I will chime in with what I know... I'd be interested in how this works out for you.

The HLS series uses a little 10mm poly dome tweeter. It's extremely similar to this unit, so much so that if you snap this one out of the baffle it will snap into the HLS horn.


The challenges:

- Physical interface to the horn - it's not a standard screw mount so you are pretty much looking at fab or jb weld type work here. I'd try it with small dabs of contact cement and then go to jb weld or epoxy.

- Limited tweeter size due to the horn opening - 10mm ideal, certainly a standard 1" is too big. 14mm might work

- Sensitivity/ohm match is required

- Crossover expectations - the HLS crossover relies on the tweeter to handle 3kHz on up. So the tweeter is expected to run down pretty low. This shows itself on the HLS series as fried tweeters are pretty common.

So... by the time you add all this up, it becomes pretty hard to justify. PE does have a textile dome that seems to be targeted towards improving upon these little mylar units.