I hear you on the costs side of the equation.

I hope I'm not abusing forum etiquette by sending a link to a specific vendor, and Wayne feel free to blow this away if I am, but here is a like to the little amps. Note an optional power supply costs around $20 putting total cost around $50 an amp plus shipping and tax.

http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=300-952

A review of this little beauty can be found at:

http://www.6moons.com/audioreviews/sonicimpact/t_3.html

Looks interesting for sure without breaking the bank.

Grant.

By the way, you can go passive crossover between the preamp and amp to save money. Slight loss of gain, but usually not enough to be a problem.

Ron

Malcolm

Malcolm

You'll find a second or third order LF low-pass combines well with a third or fourth-order HF high-pass, with crossover points slightly different, like LF at 1300 and HF at 1900. You could model the system, but it's a lot of work. Might be easier to just download Speaker Workshop and use it. At the frequencies of interest, it works pretty well.