I've been planning to redo the crossovers in my RTA 11TLs for some time--actually, I bought Sonicaps/Daytons/Mills for myself as a Christmas gift. Well, my schoolteaching year came to an end on Wednesday, so I finally got down to the business of taking a serious look at what I'm to be doing.
I pulled both crossovers, and immediately noticed that one is labeled "RTA 8T" while the other is "RTA 11T." I've been around here long enough not to panic when seeing such a thing, we all know how Polk loves to use its parts bin.
However, a closer look showed that the "8T" crossover has a 2 ohm resistor in it, while the 11T has the 1.5 ohm shown in the 11TL schematic. I looked at the schematics for the 11TL, 8TL, and 11T--both the 8TL and 11T have the 2 ohm resistor, but the 11T has an additional 2.7 ohm resistor that I don't have, so I've ruled out the possibility that I may have an 11T crossover.
Comparing the 8TL schematic to the 11TL schematic, I see two differences: the resistor value and that the value for the smaller inductor is 0.4 mH on the 8TL and 0.3 mH on the 11TL. I hadn't planned on doing anything with inductors on this project, but do I have to, on the chance that I've got a complete 8TL crossover?
OK, I've proven my theory that I can say in 500 words what others could in 100, but I'd appreciate any and all thoughts and advice you may have before I proceed.