Conference napalm::guitar

A dip switch for gain ??
Whats the manual say ??

I wouldn't mess with it.  If it's not in the manual call Daddys perhaps ?

jc

    I bought it used from daddys W/no manual { or footswitch }
      in sight 

Rutroh.  Goto plan B.  Call 'em up.

jc

    CALL WHO?

Daddys...Errrr, if thats where you got it...

jc

    You might try calling Dean Markley.  I don't know their number, but
    most companies will try and help you out.
    
    gh

    Note 1421.10 lists Dean Markley's address and phone number. I 
    would try calling them, and while you have them on the phone
    request a copy of the manual for your amp. 
    
    Good luck.
    Mark Jacques
    

    	Do you guys ever read the reviews in the back of Guitar Player????
    That amp is reviewed in the whats new section of the August issue.
    The dip switches are for voicing, allowing for up to 256 different
    settings so you can fine tune your tone/gain. And I'm a bass player!!
    
                                                      FJE
    

    With all those combinations, it would be nice to have a manual for
    a few more clues as to how to fine tune the amps tone. It would beat
    the heck out of having to try all 256 combinations.
    
    I would set it and forget it. Constant messin' with this little
    DIP switch will most likely cause the thing to break.
    
    By the way is this a tube or solid state amp ?
    
    Mark
    

    solid state

    I tried out a Dean Markley amp head (rack-mount, two spaces) last night
    and ended up buying it.  It sounded REAL nice through two 4X10's.  It's
    a bit of a departure for me to buy something without researching it
    first...  So, some questions:
    
    	1)  The model number is RM-40-SR.  Does anyone know anything about
    it?  (I'm going to be calling Dean Markley tofday to get a manual)
    
    	2)  It's REAL lightweight, surprisingly so for the sound it puts
    out.  The store told me that it had an upgrade to make it 100 watts. 
    I've never heard of upgrading an amp to raise the wattage - is that a
    likely possibility (not that it matters, I never cranked the amp above
    half-way)?
    
    	Just a general question on amps...  If it takes a few seconds for
    the sound to kick in after switching it on, can I assume that it is at
    least partially driven by tubes?
    
    	Dan
    

    If this amp has tubes, chances are they are visible through the back
    of the head. Most tube amps are heavy, so if this amp is as light
    as you say, it's probably solid state. Dean Marley makes both.
    
    Many amps include a time delay relay which prevents pops from getting
    to the speakers when powering up. Does this amp remain silent for a 
    few seconds, then produce a click followed by the normal output being 
    present ? If so, it sounds like it has a relay.
    
    Anything can be modified. The problem with trying to up the power
    of an amp is the power supply can only source so much current, and
    the circuitry can only handle so much current as well. I would be
    concerned about the amp overheating or self-destructing if it's
    been modified to produce more power than it was originally designed
    for. In a tube amp, to increase power you would have to either add
    tubes or change to differant tubes. In a solid state amp, the 
    power transistors can be replaced with differant components with
    higher gain. Perhaps Jay Tashjian or some of the other circuit
    Guru's can elaborate.
    
    Mark
    

    Thanks for the reply, Mark.  I finally got through to Dean Markley -
    they're sending me a manual for the amp head.
    
    The guy I spoke with said that it has a tube in it for the preamp
    section - that explains the fact that it "warmed up" like a tube amp. 
    It also explains the very tubish sound it got, as well as why it weighs
    so little.
    
    He said there was no "kit" to upgrade to higher wattage, so I think the
    salesman was just giving me a line (or was passing on a line from the
    guy that sold it to them).
    
    Funny thing - this has to be the first time I have really liked the
    sound of a tube preamp such that it won over other favorite amps.  I've
    tried various tube pedals and always (eventually) ended up getting rid
    of them.  I don't understand what it is about this tube preamp that
    made it so appealing...  Maybe it was the fact that it was running into
    such a big stack (2 4X10 cabs)?
    
    Anyway, I got what I wanted - an affordable amp that is flexible enough to 
    use it with whatever size cab(s) I want to carry - single small cab for
    practices or the 2X10 cab(s?) I plan on building over the holiday
    vacation.
    
    	Dan
    

    4x10s kick major booty, Dan.  Consider them instead of 2x10s...
    
    Greg (who has both)

	I've been playing with this amp for a number of weeks now.  I like it a 
lot.  I've used a variety of cheap amp over the years, usually Peavey, but never
got as much satisfaction out of an amp as I have with this one.  I have a 4x10
cab that I picked up locally and I built the 2x10 cab too.  The 4x10 cab 
definately wins - it sounds so much warmer and fuller.  

	I've got a general question, though.  The clean channel is incredibly 
loud - so much so that I have never been able to turn it way down (like 1 or 2).
The dist channel, though, can be pegged out (both pre- and master volume) and no
appreciable hearing loss is noticed 8^).  Why is there such a difference?  Is 
this normal?

	I also got my Ibanez tube screamer in the mail last week.  If volume is
necessary, I find patching the pedal into the clean channel gives me all the 
volume I could ever want (and still have a family to come home too 8^).

	Dan

    In a word ? Natural Compression.  klay, thats two words, but...
    it's a by product of distortion (especially with tubes).  
    
    jc (Who's Quattros clean side is on 1 while the OD side is on 11)  
                                                              

RE: my reply .15

>The clean channel is incredibly 
>loud - so much so that I have never been able to turn it way down (like 1 or 2).

	Er, that should be...

>The clean channel is incredibly 
>loud - so much so that I have to turn it way down (like 1 or 2).

RE: Coop

	So, I take it then, that I shouldn't be concerned?

	Dan

    I wouldn't be.  Most amps that I've owned do the same thing...
    Except for my GK's which had built in compression out the whahoo
    on the clean channel.
    
    jc

    I remember seeing ads for the Dean Markley 84-40 tube amps a few
    years ago. GP gave them a real good review. Has anyone played one?
    How did you like it?
    
    - Dave

    re -1

    I thought the 84-40 was a Seymor Duncan amp.

    -ron

    Yeah, that sounds like the Seymor Duncan amp to me.  If so, I put a
    review of it in here awhile back.  Very "Fenderish" to my ear, probably
    make a good amp for playing the blues.
    
    Greg

    re last few
    
    uh, gee, you're right. Sorry.
    
    - Dave

    While we're on the subject though, I've been wondering about Seymor's
    amps. What's happened to them? I don't see anything on them anymore. Was
    this 84-40 any good? Reading about them I thought there were some good
    ideas there, but I got the impression that the amps were sort of
    overkill in terms of options and flexability. Is there a note here on
    Duncan amps?
    

    Note #2072 is on the 84-40.  There's also some notes on the Duncan
    Convertibles that Ram Sudama entered when he was shopping for one, but
    a search of dir/ti=duncan didn't show it.
    
    Probably the deal with the Duncans is lack of promotion.  
    
    							Brian

    My friend had an old amp in his shed that was all taken apart.  When I 
    inquired he said a resistor had burned up and he guessed at the value.
    After about a week it burned again.  He tried to find a schematic for
    it but had no luck so there it sat all stripped down.  On the front of 
    the amp it said Spectra 225.  The name looked familiar.  I have a Dean
    Markley amp that is a Spectra model 112.  I called Dean Markley and they
    informed me that they bought out Spectra in 1981 and that they would
    send the schematics right out.  It turns out that the resistor was a 
    47 ohm 5 Watt.  No wonder the 50K he put in there burned. 
    
    Mark