Been a user of ACS54, ADA305, AM4100 and ADA885.

My opinion:

ACS54 - Subwoofer is way too small. If i'm not mistaken, it's a mere 4" driver. Satellites are okay. Sold off after 2 weeks of use. Pure crap!

ADA305 - Good and reliable speakers. Missed the time back then during the Windows 98SE and ME era where you get to synchro the settings of the speakers via the software provided. Speakers are still doing great, currently attached to my mom's computer. Had it for almost 9 years.

AM4100 - Dual driver woofers, kinda boomy but lacks the lower extension. Limitation could be due to driver size...a mere 5.25". The highs are acceptable...but lacks midbass, the same scenario as ATP3 and VS4121 which my friend owns. Took quite some time to calibrate the EQ to bring up the midbass of the VS and ATP.

ADA885 - Satellites are good, LCD is an eye-popper and gets ppl envious. Definitely of the best digital speaker back then during the 'ADA' line-up. Bass is definitely not the right kind for music, not tight...but can be corrected if you know how to play with the EQ of add-on soundcards.

Sad to say but i've retired from Altec Lansing. Recently sold my Logitech Z680 and got myself a Klipsch. Would really wanna try the MX5021 soon, for my secondary rig.

This post has been edited by mxploit: Jun 16 2006, 03:53 AM