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DJWilson
30-04-2008, 03:57 PM
:bang:

Hi all,

I got my amp from thomann today, the t.amp 1400.


a few issues....

I need to buy a deeper flight case for it.

It hums when i turn the volume up on the amp!

and ive turned it off but the fault light is appearing!!!!! It very slowly dims after a few minutes after power off.
(Doesnt appear when on)

Whats wrong and why is these (second two) things happening!?

Please help.

DJWayne
30-04-2008, 04:01 PM
As regards the fault light i have no idea but hum through the amplifier is usually caused by poor shielding on the signal cables :)

DJWilson
30-04-2008, 04:05 PM
As regards the fault light i have no idea but hum through the amplifier is usually caused by poor shielding on the signal cables :)


How can I imrove this? What leads you mean? Mixer-Amp?

Is it ok in thr mean time? it dont hum when I play music at a reasonable level.

Jiggles
30-04-2008, 04:11 PM
Fault light could be it just turning off? Sort of system shut down procedure.

DJWilson
30-04-2008, 04:14 PM
Fault light could be it just turning off? Sort of system shut down procedure.


I thought of something like that but wasnt sure it was the fault light. No help in the manual.

DJWayne
30-04-2008, 04:16 PM
How can I imrove this? What leads you mean? Mixer-Amp?

Is it ok in thr mean time? it dont hum when I play music at a reasonable level.

Mixer to amp is the normal culprit for amp hum however i worked a venue the other week where the hum was coming off the mains. I changed my extension lead onto a different ring main and the hum vanished

DJWilson
30-04-2008, 04:19 PM
Mixer to amp is the normal culprit for amp hum however i worked a venue the other week where the hum was coming off the mains. I changed my extension lead onto a different ring main and the hum vanished


I got the leads from Simon Cowey. Ive looked at them and they look ok though.

I have the German lead with a convertor thing on it.

The power info is:

200v-260v
50hz-60hz

Is that just an average IEC kettle lead?

TonyB
30-04-2008, 04:19 PM
The fault lights do come on when you turn it off for a while until the current has discharged. Mine does it and I don't think it is a problem.

The hum could be due to a ground loop. Have you tried changing the position of the ground lift switch?

Does it happen if you have no inputs plugged into the amp?

It is just a normal kettle plug lead. I use a different one to the one supplied with a 13amp plug on it.

DJWilson
30-04-2008, 04:26 PM
The fault lights do come on when you turn it off for a while until the current has discharged. Mine does it and I don't think it is a problem.

The hum could be due to a ground loop. Have you tried changing the position of the ground lift switch?

Does it happen if you have no inputs plugged into the amp?

It is just a normal kettle plug lead. I use a different one to the one supplied with a 13amp plug on it.


The plug I have is IEC 250v 13A.(english plug) Is that ok with the T.Amp 1400?

And the hum comes out of the speakers. Not from the amp

Is the ground loop the switch on the back? 0---0 0-\-0 Sort of thing?

Solitaire Events Ltd
30-04-2008, 04:28 PM
In future, could you call your threads something a little more contructive and specific please? Ta.

UltraBeat Entertainment
30-04-2008, 04:51 PM
My old audio head amp did the same thing when you turn the power off the red LED Lights lite on both channels. It represents that the circuit bored has lost power and the lights drain any stored power.

Hope this helps.

DJWilson
30-04-2008, 04:54 PM
My old audio head amp did the same thing when you turn the power off the red LED Lights lite on both channels. It represents that the circuit bored has lost power and the lights drain any stored power.

Hope this helps.


Yes, thank you everyone.


Just need to clear a few more things up and find a case with a good depth.

JAMdisco
30-04-2008, 04:57 PM
What playout system are you using, i.e. laptop, CD players...?
If you're using a laptop or digital system it could be that you need a Ground Loop Isolator (or is that what you meant by "a convertor thing"?

They cost around a tenner from Maplins and well worth the money.

DJWilson
30-04-2008, 05:02 PM
What playout system are you using, i.e. laptop, CD players...?
If you're using a laptop or digital system it could be that you need a Ground Loop Isolator (or is that what you meant by "a convertor thing"?

They cost around a tenner from Maplins and well worth the money.


Its a Dual CD Player.

Anyone know weather I can use this lead:

250v 13A (english plug)

200v-260v/50hz-60hz (amp)

Max. curretn draw 230v 8A. (What that mean)

DJWilson
30-04-2008, 06:01 PM
I just thought that maybe the humming maybe just the power raveling through?

It did the same on my old amp but not as loud.

Jiggles
30-04-2008, 06:11 PM
You can use that lead. If it was someing silly like 14A then no u couldn't but as its 8A its ok.

DJWilson
30-04-2008, 06:21 PM
You can use that lead. If it was someing silly like 14A then no u couldn't but as its 8A its ok.


On the IEC english plug i had for my old amp says 13A on it. Is that ok?

Jiggles
30-04-2008, 06:22 PM
yeeess!

Ajaysdisco
30-04-2008, 08:35 PM
I’m properly stating the obvious here but use the best quality cables you can afford and make sure signal cables are kept well away from mains cables.

A signal cable placed near a mains cable can pick up a 50Hz hum.

DJS
01-05-2008, 02:56 AM
Just a thought, but if you have just received it from a courier, it may be damp/cold inside the unit, which may take a while to settle?
This happened with my new Sky+ box the other day!:rolleyes:

UltraBeat Entertainment
01-05-2008, 09:08 AM
I know how obvious this is but just checking....

You don't have the volume on the mixer to high do you that can sometimes create a hum?

Try connecting it to a different play out system e.g backup mixer.

djsteve10
01-05-2008, 07:13 PM
I'm not too sure on the fault with the amp but i would suggest some high quality signal cable such as Van Damm?