THR 100 hd Noise

Covers entire Yamaha THR range of guitar amps, heads and cabs.

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User avatar Germany
blackfinger
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Joined: Tue May 21, 2019 10:13 am

THR 100 hd Noise

Unread post by blackfinger » Tue May 21, 2019 10:26 am

Hello All,

how much noise is normal with the THR 100 hd?

When I switch on the amp - 25w - it takes about 15 minutes and the a hissing starts. After another 15 minutes the hissing stops.
On 50W the hissings last for over 30 minutes and on 100W it stays all the time.
It's not that loud - but it seems strange - and I'm afraid that the hissing might increase in the future?
It would definitly be a problem with a microphone in front of the speaker.

I use a 112 cabinet.
All controls set to zero - the controls have no influence to the hissing.
I tried different cables - different rooms and different plug sockets.
There is no Mobile Phone or Television in the room.

Maybe someone has the same experience?
Is this normal or is there something wrong with the power amplifier?

Kind regards
Uli
User avatar Denmark
mcBrain
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Re: THR 100 hd Noise

Unread post by mcBrain » Tue May 21, 2019 8:23 pm

Hi Uli
I sent my THR100HD in for repair a few months back, because it had a periodic problem, where 'amp 1' often sounded low and muffled and then went back to normal, when I restarted the amp.

I also asked them to look at some white noise I was experiencing. I tried recording the noise with my phone, but it wasn't easy capturing how loud it really was.

In the end I got a store credit for the purchase price of the amp, because the store by accident sent my amp to the wrong manufacturers service, who then misplaced it somehow without telling the store. So 3-4 weeks became 10-12 weeks and when they offered me a store credit, I decided to take it. I really miss my THR100HD, but I still have the THRC212, so I may get one again at some point.

So yes, I also found it to be very noisy.
Last edited by mcBrain on Wed May 22, 2019 7:00 pm, edited 4 times in total.
User avatar Denmark
Buzzard
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Re: THR 100 hd Noise

Unread post by Buzzard » Tue May 21, 2019 8:30 pm

Hi Uli, welcome to the forum and the string section. :D

I believe the noise problem needs attention by Yamaha and your dealer.
The amp shouldn't act up like that.

Best Regards
Peter
Yamaholic, Guitars, Amps and Bikes. :idea: My Guitars: http://www.yamahamusicians.com/forum/vi ... =24&t=7004 :idea:
User avatar Germany
blackfinger
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Joined: Tue May 21, 2019 10:13 am

Re: THR 100 hd Noise

Unread post by blackfinger » Wed May 22, 2019 7:51 am

Thanks mcBain and Peter for the fast replies.
Sounds like I have to send back the unit for fixing or to get a replacment ;-(
I hope it won't result in an odyssey like mcBain experienced ...

Too bad - because the amp sounds really great - except the white noise

Thanks
Uli
User avatar Germany
blackfinger
Posts: 5
Joined: Tue May 21, 2019 10:13 am

Re: THR 100 hd Noise

Unread post by blackfinger » Wed May 22, 2019 9:41 am

Oh and I am still interested in more experince with the noise Level of the thr 100hd.
Might be helpfull for others as well.

Cheers
Uli
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