most effective bass traps

See www.realtraps.com Lots of data there.

Kal

Some get there traps tested at independent third party laboratories - such as GIK. This provides conclusive evidence of their effectiveness - how they work in your specific room is of course highly dependent on your specific issues and placement.

Large thick broadband corner absorbers are the most sensible approach to bass trapping, IMHO. (Fibreglass or rock wool works well but appropriate density foam can be good too....size does matter in acoustic absorption)

Lenrd traps by Aurelex work just fine for me and are very effective. Plus, they don't cost and arm and a leg anddon't look too bad if you get the charcoal color, after awhile they blend into the room.

GIK, SensibleSoundSolutions, ASC, RealTraps, etc. use compressed fiberglas which is very effective. Foam is generally less effective for bass, especially.

As I said above, see the data at www.realtraps.com or look up the Wikipedia article on bass traps or consult studiotips website.

Kal