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Post subject: Is the X2 suppose to hum with all knobs are at 0?
Posted: Thu Jun 20, 2013 6:33 am
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Hi,

I bought a new X2 that hums when all knobs are at 0 and no cable is plugged.
The hum has two components: one is a background "whitish noise" noise and the other is similar to a 60Hz hum.
The noise would not be a problem if I would not have bought to play at low volumes and for long recording sessions. My fridge with 37dB is more silent that the background noise of the X2.
I have no noise at all by connecting a VOX AC15 in the same room, using the same power plug and power cord.
I returned the amp to the shop and got a second new one as replacement. The second one makes the same hum as the first one.

How about yours?
Is this how it is suppose to be? Or did I had extremely bad luck with two defective units?

Thanks,
Rui


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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Thu Jun 20, 2013 10:08 am
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Aspiring Musician
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My X2 is not noisy at all. It does hum a little when I am on a hi gain voice. It is not dead silent either, but it is similar to my Hot Rod Deluxe, a little bit of hum and hiss, but almost imperceptible, even with a cord plugged in, and the tone and volume controls where I usually set them. Clean volume on 4 channel 2 volume on 2-3/4 gain at 10 for channel 2, and Trebs on 3 and bass on 2 with reverb on 2.

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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Thu Jun 20, 2013 10:35 am
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Mine is pretty much silent without a cord plugged in, but once I throw a cord in there there is a little hum, more with my Strat or Rick then with the Humbucker equipped fiddles.

-Harry


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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Fri Jun 21, 2013 12:40 am
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thank you for your replies. so... are you saying that in a quite room without cord and with everything at miniminum the amp is completly silent? or does it make always a backgroud noise like an old AM radio untuned mixed with a florescent bulb? It is not like is very loud, you would never notice in a guitar shop or in a band. It is however very annoing for a recording amp, where i have to spend a significant amout of time not playing and the amp does not even has a standby switch.it is the same noise i had with a frontman15g and the reason to get rid of it.


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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Fri Jun 21, 2013 2:54 pm
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Mine is not noisy at all even with a guitar cord in the amp and the volumes turned up a bit and not plugged into a guitar. I also had a Frontman 15 G two of them in fact, and they were also dead silent. I never had the X2 it on with the controls all turned down but I can assure you that mine would make less noise that way than it does with the controls up a bit and it ain't noisy at all.

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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Fri Jun 21, 2013 5:05 pm
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I just tried it on both channels, with both volume knobs and the gain knob all turned up to 10...dead silence. Same for all the knobs set at 0.

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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Fri Jun 21, 2013 6:46 pm
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spacewolf wrote:
I just tried it on both channels, with both volume knobs and the gain knob all turned up to 10...dead silence. Same for all the knobs set at 0.


Was that with or without a cord / guitar plugged in?


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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Fri Jun 21, 2013 7:57 pm
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Coach56 wrote:
spacewolf wrote:
I just tried it on both channels, with both volume knobs and the gain knob all turned up to 10...dead silence. Same for all the knobs set at 0.


Was that with or without a cord / guitar plugged in?

Without.

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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Mon Jul 01, 2013 11:02 am
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Hi rmx,

We will be happy to assist. Thanks for providing us with all the feedback. Have you tried to unplug your Fender® Super Champ™ X2 from that outlet (try a different outlet on a different electrical circuit) and see if the hum persists. Please let us know and we will be happy to assist.

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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Fri Jul 19, 2013 4:02 am
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Thank you for your replies.

I tried the unit in several electrical plugs, in diferente rooms and in different houses. It is definitely not a ground issue. It makes exactly the same noise with or without the guitar cord.

I tried a new brand 3rd unit in the guitar shop and the speaker makes the same tiny "white noise" with all knobs down to 0, noticeable if you are in a quite room.

The guitar shop seller says that it is a static noise common in cheap tube amps and every unit should make that. I tried different tube amps in the shop (Fender Blues Jr, Hot Rod, Vox AC, Marshal, Engl, Blackstar) none of them make any noise when all knobs are down.

To my understanding, if there is a sound coming from the speaker it means that the speaker is feed with electrical current. In my electrical pseudo ignorance I think that the volume knob should cut the feeding of electrical current completely to the speaker when it is turned 0, just like any other well designed amplifier does. For some reason, which seems to me a critical design fault in a record amp for studio, the amp leaks a residual current to the speaker.

The guitar shop seller said that the Fender importer (Sweden) says that all units make that noise.
What makes me and the shop seller really confused is the fact that you guys and girls in this forum are reporting that you have absolutely no noise with your units.

I repeat that if your room is not silent you need to stick your ear in front of the speaker to hear this noise.

I do not pretend to be a pain and make the same questions again and again, but please are you absolutely sure that there is no noise when the volumes are down? Can you please approach your ear to the speaker and check it?

Your answer is very important and it will decide if we should make pressure against the Fender importer in Sweden.

I guess it might be happening one of two things:
1) you have the same noise and you did not notice it before.
2) the batch of units that were shipped to Sweden is defective

Thank you for your answer


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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Fri Jul 19, 2013 4:19 pm
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Hi rmx,

Thanks for your detailed feedback. I would suggest that you contact us directly at tsl@fender.com and include a sound clip along with exact reproduction steps of issue described, so we can test for it here, internally. We look forward to hearing from you.

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Post subject: Re: Is the X2 suppose to hum with all knobs are at 0?
Posted: Fri Jul 19, 2013 7:26 pm
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Ah.... You are in Sweden, I live in the USA and we have a different electrical system here, that may be why. Maybe the on board transformer might be the cause. Mine is relatively silent everywhere I have played it. No louder noise floor than my Hot Rod Deluxe.

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