|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
38.118.25.194
In Reply to: RE: Unbelievable: posted by pictureguy on February 19, 2015 at 01:11:02
I have been working on a fairly new Rotel amp that I bought for next to nothing at a Goodwill store. It was dead, but I traced the problem to a relay in the remote on off circuit. It has a nice IEC input, but the wires in the relay circuit look like 22 ga. The wall power goes through these wires. I am considering bypassing the whole circuit. Inside, the amp looks very well designed and constructed (except for the fake heat sinks on the front), but it looks like the remote on off was designed by a different engineering team, who had no concern for how it sounds.
Dave
Follow Ups:
I think that would indeed be a good call to ditch the remote relay circuit and replace it with the best stranded copper hookup wire you have in your parts collection.
Please post the audible results in Tweaker's Asylum...
Hi Duster,
I am going de-solder the relay and clean it just for practice. If I decide the amp is a keeper, I will rewire. I enjoy working on this stuff. It is interesting to me how it functions.
Dave
Sounds like an RB-1070 which I learned really MEANT it when they failed to give it a 4ohm power rating.
The bridged power IMPLIED I think……180x2 @4 while the 8ohm power was listed as 125x2.
In any event it simply lacked the GUTS to drive my low sensitivity panels and was gone in 6 months.
And yes, if you can simplify the circuit while being rid of such CHEESEY wiring, I'm all for it.
Too much is never enough
Bingo! That is the amp. I think I would want something with better drive for Maggies. However, I think I paid either $20 or $30 for it, and the speakers I would use it with are very easy to drive. I want to use it in my music/home theater system in the living room. We will see. If I don't like it I can always sell it.
The plan is to first fix the relay. I need practice in this, because my HVAC and a lot of my home appliances use them. Then, if I like it or think it has potential, I bypass the remote on off. The actual amp circuitry is surprisingly good considering the price. It is all discrete with good parts quality.
Dave
I just looked this up.
Rotel claims 330 x1 bridged @8ohms, which implies 165x2@8
Amp actually has higher rating @130x2 than my Parasound A23. BUT, when working into an actual speaker, the Parasound kicks the Rotel to the ground without breaking a sweat.
Be careful you don't bridge out a TIME DELAY relay. I simply don't remember, but if you press 'go' and it wakes up than clicks a couple seconds later, you may be dealing with a short time delay.
Socketing the relay for ease of removal / fix / or replace would be a reasonable fix, as well as maybe the increase in wire gauge you suggest.
Too much is never enough
Thanks! Where would I get the sockets?
Dave
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: