Hartke 3500 Hissing problem

funkyflea69 · #1 05-14-2010, 03:42 AM

Guys

I am playing through a Hartke 3500 into a 4x10 and 1x15 Mesa cabs. I am getting a constant hissing through the cabs. I tried different leads and cab combinations so pretty sure the leads and cab are fine. Hiss also comes through without the bass plugged in so not a guitar or jack lead issue and increases as I turn the volume up.

Any ideas on the problem would be appreciated...

Cheers
Paul

spaz21387 · #2 05-14-2010, 03:56 AM

do the cabs have tweeters? sometimes the tweeters will hiss its very common in ampeg cabs.

funkyflea69 · #3 05-14-2010, 03:58 AM

The 4x10 has a tweeter but the 1x15 doesn't. They are Mesa Boogie cabs by the way not Ampeg. Seems a bit unlikely that both cabs would develop a hiss simultaneously as well...

spaz21387 · #4 05-14-2010, 04:16 AM

try a different head and see if it stops. or try using your head but using one cab at a time.

funkyflea69 · #5 05-14-2010, 06:16 AM

Have tried one cab on both inputs and connected both singularly and parallel but still getting the hiss. Seems to go down when i turn the amp tube input down so might be a valve issue. I haven't got a spare head at home at the moment but will try ASAP.

billfitzmaurice · #6 05-14-2010, 06:25 AM

Quote:

Originally Posted by funkyflea69

Have tried one cab on both inputs and connected both singularly and parallel but still getting the hiss. Seems to go down when i turn the amp tube input down so might be a valve issue. I haven't got a spare head at home at the moment but will try ASAP.

When I has a 3500 the tube channel was cleaner than the SS, so I'd suspect the tube.

PJSShearer · #7 05-14-2010, 06:26 AM

All amps "hiss" to some extent - you just don't always hear it once you start playing. Taking the treble down will lower the hiss level.

sevenyearsdown · #8 05-14-2010, 06:32 AM

Try the tube.

49sfine · #9 05-14-2010, 06:35 AM

Hmmmm, don't know what to suggest. I own the same head with an VX 410 cab and no hissing, but the cooling fan is way too loud, IMO. I play mainly at home since I am just a beginner really and the noisy fan is a distraction, but is normal for this head, I do believe. Do you find that to be true? Other than that, the rig is plenty powerful and has enough low end for my needs at this time.