TimeLord said:
The BD-Pipe speakers are very intriguing. Do you have an internal wiring diagram for them? I also have a question about the drivers. I checked out the Fostex website and they no longer offer the FE103 sigma. The do have a FE108 sigma. Would this driver be comparable?
The actual driver these were designed for is the
ACR FE103. The ACRs specs fall between the basic FE103 ($31*) and the FE108 ($67*) *(available at
Madisound).
The FE103s keep you within your budget ($124 for drivers, leaving $76 for boxes and optional super-tweeters). They become a real kick-*** bargain if you can get Radio Shack 40-1197s for the $4.97 each clearance price.
The FE108s are better suited to a horn (but they are a very nice driver) The ACRs are better than the Fostexs which are better than the RSs.
The wiring is simple -- wire the 2 drives in parallel for 4 ohms (or series for 16 ohm). If a super-tweeter is added it is used 1st order (just a cap in series).
The BD-Pipes have no baffle-step because they are bi-polar. They also seem very synergetic with SE-amps. I am working on a more optimum design for the Radio Shacks and someday i'd like to play with a set of FE108s.
The Grandpops are also very intersting. The price is definately right, but I've got another question on the drivers. The adire audio schematic calls for a Vifa D19SD-05 tweeter. Parts Express carries a D19TD-05. Do you know what the difference between these tweeters is?
Adire has a suggested replacement for the discontinued tweeter -- i can't remember what it is.
dave