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Rogue 88 problems

I bought an used Rogue 88(not magnum). I met couple of problems, hope somebody could help me out.
1. The fan gives rather big noise. My listening room is small (13X12), and it's really annoying. The seller told me the amp is about a year old. Is it about time to change the fan?
2. I hear sparks from the speaker in the first 20 mins when I turn 88 on. What could be the cause of this?
3. This one is not really a problem. When I switch from UL to triode, the volume of sound dosen't change. I am expecting the sound to go down, because the output is half of UL.

Thanks in advance.
pren
precbsed
49 posts
 
I had what sounded like arcing on start up as well with my 88 Magnum. I cleaned all the tube sockets and it eventually stopped happening. To quiet the noisy fan I simply removed the cover and thoroughly dusted the fan and its housing with a soft make-up brush. It worked. I have only used the ultralinear mode so I can't help with your last question.
marakanetz's avatar
marakanetz
5,473 posts
 
Pren,

You're in the bad situation because

a) you can't get away without fan(due to high-biased tubes in amplifier)
b) fan is always noisy especially DC motor ones.
c) Rogue is known for its "innovative" designs that either have reliability or performance issues biting a consumer thereafter or even soon after the purchase is made.

Solutions:

a) Assuming that there is a DC motor try to use AC motor fan that is substantially less noisy. It's easy to reconnect the leads before the rectifying bridge if this is the case.

b) Don't use expencive speakers or make sure that the warranty of your speakers covers the poor amps' perfomance(s).
david99
1,467 posts
 
Marakanetz-where does your information come from regarding poor reliability or performance issues regarding Rogue?
You are the first person I have ever encountered making a statement to this effect.

What Rogue component have you had you had a problem with?

If you know of some who have had problems please direct them to this thread.
Anyone have a complaint regarding Rogue??
FWIW my old 99 always perfomed perfectly and does so to this day for the new owner.It must be 5 years old by now.
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