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Conference napalm::guitar

Title:GUITARnotes - Where Every Note has Emotion
Notice:Discussion of the finer stringed instruments
Moderator:KDX200::COOPER
Created:Thu Aug 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3280
Total number of notes:61432

1911.0. "What is a Sun "Alpha four"" by WJOUSM::MAY (IT'S LIKE THE SAME, ONLY DIFFERENT!) Mon Jul 23 1990 15:19

    I picked up a "SUN" model "Alpha four" unit that looks like a four
    channel mixing board.  It is wedge shaped, has four 1/4 inch high 
    impedenceinputs in the front,  two high impedence speaker out jacks 
    that say 100 watts maximum, effect in and out, reverb foot pedal 
    jack, with five turn knobs that control reverb, volume, effects,
    sound for each channel.  It also has a clipping light and a master
    volume knob.
    
    It does have an amplifier in it but not big enough to drive a set
    of Peavy SP3's or even a radio shack bookself speaker.  The sound
    breaks up and is full of static,, also low volume.  Was it entended
    to be used with a larger power amp?? or is something wrong with it.
    
    Have any idea what the worth of something like this is???
    
    Thanks in advance
    Bruce may
   282-1668   wjousm::may
T.RTitleUserPersonal
Name		DateLines
1911.1Sick PuppyAQUA::ROSTPeavey=Mississippi MarshallMon Jul 23 1990 16:125
    An Alpha Four is a four-channel 100 watt RMS PA head.  Sounds like the
    power amp is blown.  A working one in good shape would bring about
    $150.
    
    							Brian
1911.2How hard is it to fix a blown ampWJOUSM::MAYIT'S LIKE THE SAME, ONLY DIFFERENT!Mon Jul 23 1990 16:1710
    Thanks Brian
    
    Any idea if this thing is worth fixing??? or should it be tossed in 
    the junk pile??   If it were a 10, 20 or even 50 dollar part thats gone
    than I would think it would be worth it.
    
    Thanks again
    
    Bruce
1911.3research it firstHAMER::KRONI'm the Amoral Minority!Mon Jul 23 1990 17:184
     I think the alpha series were "mos-fet" amps. the trannies may be hard
    to get and you would have to take precautions as thgey are STATIC
    SENSITIVE. If you can have it fixed for less than 50$ -why not?
1911.4Check it out...CSC32::MOLLERWho you gonna call? Code Busters!Mon Jul 23 1990 17:1919
	Repairs might be pretty simple. I bought a Peavey PA-900 about 2
weeks ago. It was totaly dead (except for the little muffin fan & that worked
fine). Paid $50.00 for it. I got it home (it's a large beast) & popped the
back cover off & found that one of the power supply connectors was unplugged.

	I reconnected it & made a few checks with my Ohm-meter. All looked
good so I hooked up some cheap speakers on it. It worked fine. I then connected
my P.A. cabinets to it. Also worked fine. 

	What I figure happened was that the person who owned it previously
had tried to replace the lights in the VU meters & forgot to plug in the
power supply when they reassembled it. 

	So, for $50.00, I got a 9 channel board with a 400 watt RMS
power amp & all of the associated hardware. The pots are a bit noisy, but
it's been used for the last 6 gigs (we play thurs/fri/sat at a club here
in Colorado Springs) & it works quite well.

								Jens