I have a Plinius 8150 integrated amp connected to Hales Rev 3 speakers. I experience a constant humming noise which can be heard through the speakers. Although only noticable when the unit is idle, I am naturally concerned. I have tried disconnecting everything else and plugging into a seperate source, but no matter which speaker output I test, I always get noise. It is loud enough to be heard from up to three feet away. This is a brand new unit and I would appreciate some advice before I call the distributor. Anyone else with the Plinius 8150 ever experience similar problems?
Your comments are most appreciated.
I would like to advise Jade to please contact our US Distributor at the following e-mail address email@example.com if he feels that he has a problem with his 8150. Also Tel. 404 872 2564. Please ask for Larry or Rod.
The 8150 uses the same preamplifier circuit building block as our M16 preamplifier and due to its design does have a very small amount of white noise present as a trade off. This is akin to "tube rush" and is a direct result of the circuit arrangement. We can make it dead quiet but it has a major effect on the sound of the 8150 which from all reports is quite unique in an integrated amplifier. The amount of white noise that one will detect is directly proportional to the effeciency of the speakers being used and naturally those of +90db effeciency will show this up more than those below this level.
Please be assured that if there is the slightest indication that there is any fault with the 8150 or any Plinius amplifier it will be attended to with effeciency and courtesy.
Thank you for responding. I thought this forum would be good place to start. My past dealings with Rod and Larry at Advanced Audio Technology have been less than favorable, so I was not looking forward to contacting them regarding this problem. However, I spoke to Rod earlier today and he promised to get back to me tomorrow! My speakers (Hales Rev. 3) are Sensitivity Rated at 86.5 dB (2.83V, 1m) and the static hum noise can be heard from three feet away.
Thanks Everyone! Like David, the noise that I hear is more like constant static. I fear that it may be inherent to this unit. I tried a cheater plug, but it was no help at all....
I've always had noise from my 8150 at idle. Not hum, but like loud static noises, very annoying, especially since the unit must stay on all the time. I also found crosstalk between the channels. The icing on the cake arrived last week when the amp just crapped out and after a pop the output level just dropped to a fifth. I've heard from other owners who've had problems with their 8150. If all you get is ground hum, you might be able to get rid of it with a cheater plug. Otherwise, get out of your purchase. The sound is nowhere near as good as its reputation
PS My unit is only 15 months old!
"The sound is nowhere near as good as its reputation"
so, where do you think the reputation comes from, David ?
Yep, you gessed it, I'm a Plinius owner and a very happy one. They have a very good support to all their stuff, so I really dont quite get why would anyone prefer to post a question in this forum instead of going straight for the gold and question Plinius and/or the dealer that sold him the amp.
What frequency is the hum. Check it against a piano. It is either 120Hz or 60Hz. If the former, it's a problem with the amplifier, if the latter it still might be a problem with the amp, but it's probably either pickup or a grounding loop.
An amplifier of that price should be flat out PERFECT. I would not tolerate any perceptible fault.
I have the 8150 with Anthem CD1 and Silverline SR15 speakers, never heard noise. I've had it for almost a month now. I dont believe it's the 8150, because i've read many many user reviews, and have not come across a complaint about humm. The most common complaint is the high heat dissipation.
Hi Jade, I have the same noise with Electrocompaniet separates and received a lot of good ideas from the posts in response to my 6/9/00 post entitled "SpeakerHum." Still have the problem.
You haven't been here in ages.
Have you checked for grounding problems? Have you tried a cheater plug?
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