Diezel cab problem

sherpa_man

Quick question, I have a diezel d moll and run it through my diezel 2x12 and I have a problem with distortion, not amp distortion but almost like the cab can’t handle it. How ever when I play through my mills, it’s so much clearer and seems to handle the higher gain much better.

possible problem with the cab?

ICBM

Possible. What speakers are in it?

sherpa_man

V30

its almost like when you turn stuff up to loud on a hidi it starts to distort 

ICBM

Those will be close to their power limit with a 100W amp, but they're usually fine - if anything they're one of the speakers that likes being hammered.

Are you tuning down or using an octaver or anything? Can you tell if the problem is localised to one speaker? (I appreciate that may be hard to tell with the amp up loud!)

It could also possibly be a bad resonance in the cab.

Modulus_Amps

Could be a speaker is blown, in which case the load the amp is wrong and the power output will be less.

Or you are running too much bass for the cab as it is probably quite resonant already, you can prove that by turning down the bass

sherpa_man

Still has the issue with lower bass. How would I check the speaker?

ICBM

sherpa_man said:

How would I check the speaker?

Do both speakers sound the same when you listen very close up against the grille? You don't need the amp up loud for that.

If there's nothing obvious, you will have to open up the cab and test them individually - this may mean unsoldering one of them if they're wired in parallel and they don't use push-connectors. What impedance is the cab?

MARVlN

Is all the hardware tight? Back panel and speakers? Might not be what you're hearing, but worth a quick spanner check as slightly loose hardware could cause vibrations and/or could change the resonant properties of the cab.

sherpa_man

MARVlN said:

Is all the hardware tight? Back panel and speakers? Might not be what you're hearing, but worth a quick spanner check as slightly loose hardware could cause vibrations and/or could change the resonant properties of the cab.

I am going to check that tomorrow. It’s coming from both speakers, so I am kind of thinking it’s a cab characteristic 

Modulus_Amps

Did you buy the cab new?

If second hand I would check what speakers are actually fitted and the actual internal impedance