077 or 2405 Dispersion Inserts

[aust-ted]

Anyone seen these before?

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5762871789&indexURL=0&photoDisplayType=2#ebayphotohosting

I could guess what they do but thats all.

Just curious
Regards
Ted

[Maron Horonzakz]

A tongue depresser?:blink:

[trueview]

think those are the flanges that flank the acrylic piece in the 077

[Mike Caldwell]

Hello
Those are the inserts that make the "slot" in the 077 / 2405.
The 2402 / 075 used the same basic horn but in the 2405 they
put those inserts in the horn to make it a slot waveguide, change the phase plug from the "bullet" to the wedge and you have a slot tweeter. Those are the earlier style that were held on with screws, the later style were glued on the the mouth of the horns.

Mike Caldwell

[aust-ted]

"Those are the inserts that make the "slot" in the 077 / 2405.
The 2402 / 075 used the same basic horn but in the 2405 they
put those inserts in the horn to make it a slot waveguide, change the phase plug from the "bullet" to the wedge and you have a slot tweeter. Those are the earlier style that were held on with screws, the later style were glued on the the mouth of the horns."

Thanks Mike So these go inside the front part with the slot. Makes sense

I have never pulled a 2405 apart. I had just assumed that the prism was the only bit inside that was special.

Regards
Ted