You can find some Bass Test and THX Demos to test your speakers.
Due to popular demand, I have personally created the ultimate tests for your needs. Here they are:
5-100.flac starts from 5 herz (even with a highest end subwoofer you won't even hear anything at the begining) ends at 100 herz, and goes to 5 herz again. 1 minute flac file.
25-20and30and35and40.flac starts from 25 herz goes down to 20 (for 10 seconds) and then for 2 seconds 30 herz, for 2 seconds 35 herz, for 2 seconds 40 herz.
100-25and250-100.flac starts from 100 herz goes down to 25 in 30 seconds, starts from 250 goes down to 100 in 30 seconds.
100to10step10.flac starts from 100 goes down to 10 herz in 10 herz stepping.
To convert flac to wav files download flac.
These are 320 Kbps mp3:
100-25and250-100.mp3 - 1:0, 320 kb/s, 2341 KB
100to10step10.mp3 - 0:20, 320 kb/s, 780 KB
25-20and30and35and40.mp3 - 0:18, 320 kb/s, 701 KB
5-100.mp3 - 1:0, 320 kb/s, 2341 KB
These are 320 Kbps mp3:
hardknocklife.sample1sec.mp3 - 0:1, 320 kb/s, 33 KB
silentbreed-syncin.sample10sec.mp3 - 0:10, 320 kb/s, 389 KB
subway26.sample8sec.mp3 - 0:8, 320 kb/s, 318 KB
If you would like to see your own music here, you may contact me
Deep Spirit - No Cover Song (Abseed Remix).mp3 - 4:00, 320 kb/s, 9.6 MB
This page is first created in 2002, so the quality of mp3 files here are low.
Bass Test - DJ Magic Mike.mp3 - 0:37, 192 KB/s, 861 KB
THX - 20th Century Fox Fanfare.mp3 - 0:25, 128 KB/s, 393 KB
THX - Air Raid Surround Sound Test.mp3 - 0:30, 128 KB/s, 469 KB
THX - Always Coca-Cola(Commercial).mp3 - 1:2, 128 KB/s, 961 KB
THX - Bass Test - I Love Big Speakers.mp3 - 4:24, 128 KB/s, 4122 KB
THX - Bass Test - Ultimate Subwoofer Test.mp3 - 3:42, 128 KB/s, 3464 KB
THX - Bass Test - Very Loud.mp3 - 1:16, 128 KB/s, 1192 KB
THX - Dolby Sound Effects.mp3 - 0:30, 128 KB/s, 468 KB
THX - Jurassic Lunch (Major Bass).mp3 - 1:1, 128 KB/s, 954 KB
THX - Low Frequency Audio Test.mp3 - 0:42, 128 KB/s, 654 KB
THX - Lucas Arts THX Grand.mp3 - 0:39, 256 KB/s, 1231 KB
THX - Military.mp3 - 1:42, 128 KB/s, 1593 KB
THX - Moo Cow.mp3 - 0:30, 128 KB/s, 464 KB (my favourite)
THX - Movie Intro.mp3 - 0:29, 128 KB/s, 456 KB
THX - Orchestral Sound Test.mp3 - 0:33, 128 KB/s, 513 KB
THX - Robot.mp3 - 0:50, 128 KB/s, 779 KB
THX - Sound Effects Demo.mp3 - 0:30, 128 KB/s, 468 KB
THX - The Audience Is Listening.mp3 - 0:29, 128 KB/s, 453 KB
THX - The Simpsons.mp3 - 0:33, 64 KB/s, 261 KB
THX - Train.mp3 - 0:29, 128 KB/s, 450 KB
Compumaster, 2002 (Contact)