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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
geoffgarcia
92 posts
 
on a side note
has anyone had any good/bad experiences with different power cords and the 88?
arafel
32 posts
 
I use an Audio Magic Illusion power cord on the 88 with great results. The sound is more expansive, for lack of a better word.
natnic
33 posts
 
A Bob Crump DIY is all you need to get this thing sounding great.
Any more spent and its a waste.

no more that 5% of your budget should be spent on cables.
bigo
34 posts
 
Scottht,
What differences did you note with the M120 vs the 88 ?
I am considering upgrading to the M120s. Thanks Len
scottht
398 posts
 
Everything !! First of all, I am using a pair of Proac Studio 250 speakers. They aren't the most efficient in the world. 89db I believe. The M120's have gobs of power compared to the 88. Every note seems presented effortlessly as compared to the 88. The 88 ( after looking back at the sound as compared to the 120's) seemed strained and maybe a little congested compared to the 120's. I felt happy with the 88 for a little while. Maybey 7 or 8 months. But then I grew tired of the presentation. I am not the most electricaly technical person here so I can't explain the theory of operation but, there are 4 KT88 output tubes per channel as opposed to 2 with the 88. That has to count for something right? Not only that but, the 120's are great heat source for a cold room :-)
I felt that I couldn't go wrong. I traded my Magnum 88 and $900 for the pair of 120's and I haven't been happier.
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