Quote:
Originally Posted by austell
How did you position the rectangular plate before putting on the cloth? What did you use? Something of similar size? How did you mount it?
And do you need two amps? Can one amp suffice? What are the advantages of having two?
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Good catch, I forgot to mention those! I used two rectangles of 1/4" MDF, mounted much the same way as the speaker rings. The terminal cups are from radio shack. The rectangle was cut to shape and glued in. I had to carve out an area of glass at the top to ensure the fabric would stretch smooth over it and still give me some clearance to get to the connectors while they're installed in the car.
The two amps are different, one is a PDX 4.100 for the front mids and tweets on individual channels, the second amp is a PDX 1.600 for the subs. It's a mono block amp and both subs are 4ohm, wired in parallel so they are 2 ohm. Normally this would increase THD a bit and increase power, but with this amp it doesn't make much difference between 2ohm and 4ohm. Anyways, the amp has recently replaced with a single PDX V9, which has 4 100 watt channels and a single 500 watt channel for the subs, with this setup it's plenty of power. Ill post more pics soon, I'm in the process of making a smaller rack now that I only have one amp.
Edit-
To answer your question, two amps are not necessary, but could certainly be used. If you have two 4 ohm subs, you could power them via a two channel amp to maintain 4 ohms each, which is easier on the amp and produces very slightly less THD, but for subs it's really not audible. I chose a mono block for simplicity and they're designed for subs anyways. The V9 sub channel is the same.