Customer Review

79 of 95 people found the following review helpful
3.0 out of 5 stars Good, But I am glad I did not buy anything cheaper, January 19, 2006
This review is from: Onkyo M-282 2-Channel Power Amplifier (Discontinued by Manufacturer) (Electronics)
I was looking for a "cheap" amp to drive my 2nd zone "background" music speakers. My price point was around $200 and this unit has a good look to it, so it would fit in next to my more "up scale" B&K separates.

The Good:

It came double boxed and packed well, (always a good sign).

It has a hi-end look to it, (good fit and finish).

The sound is clear and clean, no hum, or hiss (from the speakers, see the bad)

It makes you understand why you spent 10 times as much for your main amp.

The Bad:

The thing is a space heater even when in "stand by" mode the heat is coming from the inexpensive power transformer.

The two tone LED is red when in "stand by" and a cheap orange when "on" I guess green or blue would be better for "on" for me.

I found that when I turned everything "off" to go to bed the transformer has a 60Hz hum to it that can be heard if you are standing a few feet away.

Conclusion:

It seems like a good amp, and if I compare it to the price I paid for my B&K amp it is a good value. Time will tell if the "budget" components will hold up over time. Because of the heat and hum from the transformer I would suggest not using this unit as part of your main music or surround system. I was going to give it 4 stars for looks and features but the heat and hum drag it down to an average 3.
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Comments

Tracked by 2 customers

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Showing 1-9 of 9 posts in this discussion
Initial post: Dec 23, 2008 2:32:06 PM PST
K. Ward says:
Mine stays cool and makes no noise at all. try hooking it up to better equipment, your sony speakers and CD player are probably why it hums.

Posted on Dec 29, 2009 7:46:18 AM PST
W. Mills says:
Per the other reply, I doubt the load (the speakers) or source (the CD player or receiver) are the problem if the unit is humming and is still generating heat excessive when in standby. It sounds like either the main power transformer has a problem, hence the 60 Hz mechnical noise/heat, or there may be an issue power coming into the unit. If all the other gear is quiet and running cool, I'm guessing there is something amiss with the transformer. Another possibility if the amp is on an outlet that is not shared with any other gear the outlet might be miswired?

Posted on Nov 7, 2011 4:27:35 AM PST
According to the owner's manual, if you experience a hum, then it is due to powering your amplifier from a non-grounded receptacle. There is a grounding terminal on the back of the unit you can use to ground the amplifier.

Also, any signal moving through the amplifier to another system via the pre-amp passthrough, (let's say to a powered subwoofer) is not attenuated or cut-off even when the amplifier is not powered, and humming may occur at this second output if the source is not turned off.

Posted on Jan 29, 2012 2:55:20 PM PST
Last edited by the author on Jan 31, 2012 2:22:08 PM PST
domd06 says:
Purchasing this amp to bi-amp the low end on a set of Polk TSI500's/currently driving system with Yamaha 671 AVR. Added Polk 505 sub which will continue to hang off the Yamaha along with the 500 mid-hi's. Was considering Niles 2125 but price (about $540) was prohibitive at this time. Hope this amp lives up to expectations of both performance & longevity.

Update:
Spoke with Crutchfield support and was told that I cannot hang this amp off the Yamaha 671 receiver to Bi-Amp my Polks because the 671 does not have 7.1 RCA audio outputs. There are RCA outputs, but not 7.1. Looking for Yamaha Tech Support to solidify this fact. As a side note I can still Bi-amp off the 671 itself by using the surround sound back outputs, though this would reduce the solution from 7.1 to 5.1.

In reply to an earlier post on Jan 29, 2012 3:32:07 PM PST
Just a note -- you will enjoy listening to this amp on full power -- I have blown the tweets on two sets of speakers... lol (Replaced them all and now have no problems...)

In reply to an earlier post on Jun 25, 2012 9:37:45 PM PDT
Last edited by the author on Jun 25, 2012 9:40:21 PM PDT
snowman1 says:
mills you are getting it close to on the money. Belive it or not this problem happens more than people realize. There are two good reasons and very common, but most people will never notice it unless they are useing high end equipment. wich picks up the entire frequincie range with out useing filters. or compare their electric bills with others in the neighberhood.
PROBLEM: 1-Bad electrical house grounding. and
2-A bad transformer coming from your electric pole.
I would gather if he was to check with some neighbors down the block, he will find his utility bill is higher than most.

Posted on Jul 9, 2012 1:39:43 PM PDT
[Deleted by the author on Jul 10, 2012 7:45:54 AM PDT]

In reply to an earlier post on Jul 9, 2012 8:21:32 PM PDT
Last edited by the author on Jul 9, 2012 8:24:45 PM PDT
snowman1 says:
wow, well to inform you why onkyo uses the amber LED's is because this color is the least distractive to the eye. so your eyes are not anoyed while watching a movie, unlike the blue, red, etc wich are a distraction to the human eye, while trying to focus your attention on the video your are watching. also you seem to be a bit confused on how led's actualy work. while the plastic may have a color coating, or solid plastic color, it is the amount of gas,spaceing depth of the electrode, in the sealed enclosure that actualy deturmines the actual color. If you ever get the unfortunate, boreing task of makeing led's you will understand in a short time how they realy work.

In reply to an earlier post on Jul 10, 2012 7:45:19 AM PDT
[Deleted by the author on Jul 10, 2012 7:45:44 AM PDT]
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