Best Subwoofer for Quad 2805 under $5k

check out the review of the VANDERSTEEN V2Q here in AGON
one of the fastest and most musical subs out there at any price

Review: Vandersteen 2Wq Subwoofer

Might want to take a look at the manepan bass unit:

http://www.magnepan.com/DWM_and_DW_1_Woofers

Experiencing great results using 2 REL B2 subs with Quad 2905's. After much experimentation seamless intergration was found in my room by placement only about 3 feet behind the inside edge of the Quads and toed inward.

Room resonances were controled with cast concrete blocks under the Rel's (aprox 25 kilos) and about 5" thick. Cones are placed under the front feet resulting in a backward tilt.

A pair of REL B2 or B3 here on can be had well under your budget and 2 subs are better than one in my subjective opinion.

I havn't had any experience with the subs in your enquiry and don't doubt their application, but I've found subs are like real estate ,location , location, location .

Keep us posted on what you end up with and the results, very interesting.

Regards.

I have used a pair of REL 505s and later the G1s with great success with the Quad 2905s. Superb subs, easy to blend as the G1s have a remote.

My recommendation would be a pair of Anthony Gallo TR1D subs. They are small and unobtrusive sealed cylindrical encloseure with a 10" woofer and a 200 watt amp. They are simple to integrate and do not produce ponderous bass. I use them with ESP speakers driven full range and the subs connected speaker line input and utilize the sub crossover. The ESP's are sealed and the bass they produce is tight and quick but not that deep. The TR1D's match perfectly adding the deep bass without bloat.
I never could get my REL B3 or the six previous subs to perform to expectation. The Gallo's do what I want and for only 1200.00 for the pair.