Hi,i don't seem to have much bass sound,even increasing it on the amp,doesn't make a lot of difference

Feedback that's not bass.

Recommend an Ashdown or Fender with a 15" speaker, they will give a good sound, are gig-worthy, and will last. I use a Behringher 120W for rehearsal work, it only has a 12" speaker and thus cannot give a good 'presence', also I have been reliably informed, a lot of custom chips are used in thier amps.
Don't forget, a bass 'E' goes down to something like 60Hz, and a good speaker and amp are a must for bass work

How new is the amp?

A single faulty solder can do that...I'd try returning in to the seller.
Have you tried a different amp with the same equipment?

Sounds like a wiring issue.

Hope I've helped
PvT

Check your different settings either in your t.v. or your amp. In your menu settings you can change your audio. Bass trebile etc. and even sometimes switching it from stereo,mono, dolby digital will increase your volume. Dolby digital is very quiet if your not running and exteranal amp system. so try changing it to stereo and your volume should increase.

are the sub speakers ok? if ok then u have a problem with the Amp and the output IC's will have to be checked there cud be a problem with the input card in the amp.

If you can't hear the difference maybe the bass frequency which is moving the speakers is below your hearing range.

I think you may have a "loudness" button on that amp -- if you do, turn off the loudness -- this is a bass booster.

But, in general, bass speakers are designed to move in & out a lot. They have to move a lot of air to produce the bass sound.

Could very well be the fan. The motors can cause interference. There may be a solution to get rid of the noise. Some copper shielding tape may help. You could rule out it being a microphonic preamp tube by turning the amp on as normal and tapping the tubes with something non-conductive. If you hear the tapping noise coming thru the speakers while doing this to a particular tube, replace it. With power tubes, the tops of them turn white on the top when they become microphonic, along with plenty background noise.

hello. we cant help if we dont know what music source you are using.

alot of times its not just the amp that gives you better sounding bass.. A lot has a to do with a few other factors as well.. first off your subwoofer.. the bigger the subwoofer the deeper the bass. Some woofers exturde, or flex differently depending on the quality and structure of the woofer.. 2nd is gonna be the sub box. different size boxes will give your sub diff. depths of bass. ... general idea is the bigger the box deeper the bass. But if your woofer is not supplied enough power a big box is useless.   With that size amp your best bet is too run a single woofer. Probably a 10inch woofer would sound the best.. but it in.75cub inch. sealed box.. should sound great.

probably your power is too short, increase your gauge wire, and your ground wire of the amplifier has to be shortly as possible, and the positive has to be enough to support peak power, you can also put a big capacitor on the positive wire to give some more power while the bass peak.