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Conference napalm::commusic_v1

Title:* * Computer Music, MIDI, and Related Topics * *
Notice:Conference has been write-locked. Use new version.
Moderator:DYPSS1::SCHAFER
Created:Thu Feb 20 1986
Last Modified:Mon Aug 29 1994
Last Successful Update:Fri Jun 06 1997
Number of topics:2852
Total number of notes:33157

661.0. "Eletric Component Outlet?" by JUNIOR::DREHER (This space for rent...) Thu Jan 15 1987 16:39

    I had an accident with my mixing board last night and broke a
    pot.  Tascam calls it a 'variable resistor', part # 5282707400.
    Its 5k ohms (RD) + 20k ohms (A).  I open the board, removed the
    input channel PCB, and de-soldered the part. 
    
    All music stores say 3 weeks to order from Tascam, California.
    Anybody know of where to get electical components other than Radio 
    Shack in the greater Maynard area so I can see if I can find a 
    possible compatable replacemnt sooner?
    
    Dave
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661.1Lookup Electronics in the Yellow Pages?DRUMS::FEHSKENSThu Jan 15 1987 16:4410
    I seem to recall hearing some bad things about it (expensive?) but
    You-Do-It electronics in Needham seems to have a large selection
    of parts.  I think somebody also mentioned a place in Westborough
    whose name escapes me (no, *not* Len's place).
    
    Uhm, there's at least one electrical outlet "component" on each
    wall of my apartment...  ;^)
    
    len.
    
661.3Oh, not that kind of pot?DRUMS::FEHSKENSThu Jan 15 1987 18:447
    You ought to be able to replace broken pots at that big horticultural
    place on route 20 in Sudbury...
      
    ;^)
    
    len.
    
661.4Pssst!! Wanna buy some pot....JAWS::COTELet's change the rules and giggle!!!Thu Jan 15 1987 18:4914
    ... or Stark Electronics on Franklin St. in Worcester. They pander
    more to the radio and TV crowd, no prom blasting, but it's easy
    to get a pot or an output transistor.
    
    Please pay the highest price you can find if you want us to like
    you.
    
    Edd                8^?   <- Sticking tongue out. 
    
                        
                        
                  
    
    
661.5Pots and PansSTAR::MALIKKarl MalikThu Jan 15 1987 19:265
    
    	Or, call up Tascam, ask to talk to a repair technician, and
    talk him/her into sending it to you 1st class.
    
    							- km
661.6get the taper rightSSDEVO::MCCOLLUMMon Jan 19 1987 15:289
    If you buy it from anybody but Tascam, be sure to get the correct
    type. Pots are made in several different tapers, such as linear,
    logarithmic, etc. For example, replacing a linear with a logarithmic
    will make the control useless.
    If you can replace with the same manufacturer/part number you'll
    be OK, but beware of "replacements".
    
    Peter
    
661.7I know this is a digression, but...AKOV68::EATONDImpressionable YouthMon Jan 19 1987 16:0310
RE < Note 661.6 by SSDEVO::MCCOLLUM >
                            -< get the taper right >-

>    type. Pots are made in several different tapers, such as linear,
>    logarithmic, etc. 

	I was in Radio shack looking for a pot and I noticed linear and audio 
tapers.  What's the difference?

	Dan
661.8Do this making sense?JAWS::COTELet's change the rules and giggle!!!Mon Jan 19 1987 16:265
    Methinks audio taper slopes are more horizontal at the far end of
    the throw, ie, the difference in level between 9 and 10 is smaller
    than the difference between say 2 and 3. (What about 11?)
    
    Edd
661.9ECADSR::SHERMANMon Jan 19 1987 16:335
    I believe the audio taper is logarithmic.  They call it audio taper
    because it's what they tend to put into audio equipment.  If I were
    you, I'd go ahead and get a pot that has the right impedance and
    audio taper and put that in.  But, I'd try not to get a cheapie
    because the brushes in these can get noisy.
661.10No one has it...JUNIOR::DREHERThis space for rent...Mon Jan 19 1987 16:384
    I went to Active and U-Do-It.  They don't have it so I ordered
    from Tascam and with run on 11 channels for now.  Thanks anyway!
    
    Dave
661.11GUMDRP::DEHAHNMon Jan 19 1987 16:458
    
    Pots are notoriously hard to get. Most can be special ordered thru
    the standard distributors, very few are stocked. There are some
    specialty shops which carry a few common ones but your board
    manufacturer was probably the best bet.
    
    CdH
    
661.12audio tapersSSDEVO::MCCOLLUMFri Jan 23 1987 19:2514
    re:.7
    Yes, as someone else already said, I believe "audio taper" is basically
    logarithmic. They are meant for things like volume controls, because
    the perceived loudness is a logarithmic function of the voltage
    on the wiper (output) of the pot. Using a logarithmic-tapered pot
    means that the perceived loudness increase will be approximately
    linear as you crank it up.
    
    Note that controls on audio gear for things like EQ's may have a
    linear taper, or may have a bizaar taper that is different in the
    middle of rotation, relative to the far ends of rotation.
    
    Peter