Does anyone out there have the T&S parameters for the Altec 412C?
Here's what I have going on: I have a very nice pair of 412Cs, a pair of 806As, some Faital STH100 horns and some old cabinets (maybe Acousti-craft) that are approximately 5 cubic feet in volume. The cabs are bass-reflex with two Ultra-Flex/Onken-like vents on the fronts--one vent on the top and another on the bottom. The baffle was cut for a 15" woofers, but I'm currently using some 15"->12" adapters in order to install the 412s. Probably not ideal, but it will have to do for now. I have lined the inside of the cabinets with some furniture moving blanket material that I had on hand, using the live-end-dead-end technique. 2" foam on the back panel behind the woofer.
I'm looking for the T&S parameters to help with fine tuning the cabs and in determining a good performing crossover. I've tried running the 412s full range with both 1.5uf and 2.2uf caps, with the 2.2uf cap sounding better to my ears. A quick and dirty frequency sweep with the 412s installed in the cabs shows a response from about 40Hz to 10kHz, which means that there is a lot of overlap between the 412 and 806 with the 2.2uf cap bringing in the 806s at 4.5K. I'm clearly liking what I'm hearing with the 806 going down lower, which makes me wonder if I'd be better off with a 2nd order crossover ala JE Labs, treating the 412 more like a 414.
Any advice would be greatly appreciated.
Here's what I have going on: I have a very nice pair of 412Cs, a pair of 806As, some Faital STH100 horns and some old cabinets (maybe Acousti-craft) that are approximately 5 cubic feet in volume. The cabs are bass-reflex with two Ultra-Flex/Onken-like vents on the fronts--one vent on the top and another on the bottom. The baffle was cut for a 15" woofers, but I'm currently using some 15"->12" adapters in order to install the 412s. Probably not ideal, but it will have to do for now. I have lined the inside of the cabinets with some furniture moving blanket material that I had on hand, using the live-end-dead-end technique. 2" foam on the back panel behind the woofer.
I'm looking for the T&S parameters to help with fine tuning the cabs and in determining a good performing crossover. I've tried running the 412s full range with both 1.5uf and 2.2uf caps, with the 2.2uf cap sounding better to my ears. A quick and dirty frequency sweep with the 412s installed in the cabs shows a response from about 40Hz to 10kHz, which means that there is a lot of overlap between the 412 and 806 with the 2.2uf cap bringing in the 806s at 4.5K. I'm clearly liking what I'm hearing with the 806 going down lower, which makes me wonder if I'd be better off with a 2nd order crossover ala JE Labs, treating the 412 more like a 414.
Any advice would be greatly appreciated.