new amp

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I am planning to make a new amp and I need feedback on my design.
my amp is intended for a small sub-woofer.
I have attached a schematic below.
 

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Hi,
the 26r (or 27r?) on the output seems a little high.
And you should add the other half of the Thiele network to the the output so that the amp sees a high frequency load.

The passive single pole low pass filter seems a bit unusual.

It will let through much of the audio signal.
In fact the signal out of the sub will be quite intelligible the way you have shown it.
 
I have to agree with AndrewT about the passive crossover. I messed with them for quite awhile and never got rid of the spikes they allowed to pass.

Also, I just built a sub amp using an LM3886 and with the below active crossover, the thing peforms way past my expectations.

Edit: Your schematic does not show the mute resistor.

Concider this.
 

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