Need help with sub selection


Downsizing to monitors (monitor audio silver 3's) for a while,
with a buget of $500 (used) any recommendations on a small sub
no larger than 10" driver.

Thanks in advance
markeetaux
Vandersteen 2W utilizes a trio of 8" woofers and a self contained 300 watt amplifier. Used prices run under $500. IMO, the 2W is a great value.
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Given your budget, you may want to consider the Outlaw Audio subwoofers, which were designed for them by Hsu. They have gotten good reviews, and offer a lot of performance for the money. Click on the following link to Outlaw to learn more:
http://www.outlawaudio.com/products/lfm1.html
Hey Bob, How do you figure you are losing the ability to biamp with an REL sub?
I use the Q108E REL with Von Schweikert VR-1s in a small room. Nice and small, bass to 30 Hz. To get lower you will need a larger sub. I also have a beautiful Hsu VTF-3R that goes to 18 Hz (-2 dB), flat to 20 Hz., but it is bigger. Great price and great service.