if you want to test bass sound,
go buy a bass test CD.
it'll have tracks that are just tones at specific frequencies.
also sweeps through different frequencies.
if you don't want to buy a CD then go to you tube and search bass sweep.
or use some wave editing software, to create your own test tone CDs
Alternatively you can do as I do and used a dedicated signal generator to provide tones.
This thread is also five and a half years old! so it's going to get locked now.
please don't bring threads back from the dead