Need help with a Beseler 45MCRX with a DG1 Dichro 8145 Color Head

Discussion in 'Darkroom Equipment' started by Eric Muetterties, Mar 15, 2012.

  1. Eric Muetterties

    Eric Muetterties Member

    Messages:
    4
    Joined:
    Mar 15, 2012
    Location:
    Dublin, CA
    Shooter:
    35mm Pan
    Ok Newbie here. Be easy on me.

    Bought this and have questions.

    _DSC7386.jpg _DSC7389.jpg _DSC7387.jpg _DSC7385.jpg _DSC7388.jpg

    It looks like this is a newer head on an older enlarger.

    The box between the transformer for the cold light head looks like it is designed to mount on some other type of unit. Do I need to rig it up for this one?

    The timer unit has 2-prong outlets and the head has 3-prong plug. OK to use with adapter w/o ground? Does the timer usually need to be used with safelight to shut it off while exposing?

    Controls at side of enlarger look like they only work with old style head. Only thing still useful is the control for raise/lower?

    Lastly... what are typical ranges of time for exposure? I understand that this could vary depending on paper, film density, size of enlargement, etc. Just looking for a starting ballpark.

    Wondering the steps that something like this is used. I understand loading and focusing. I have not done enlarging since about about 1970 when I was 13 so go easy one me ?

    Thanks in advance for any and all help!
    Eric Muetterties
     
  2. ic-racer

    ic-racer Member

    Messages:
    7,514
    Joined:
    Feb 25, 2007
    Location:
    Midwest USA
    Shooter:
    Multi Format
    You have a diffusion head with color dichroic filters. The bulb runs off the 24V power supply. The variable "resistrol" is for a different head.
    If you plan on multigrade printing you can use the built-in filters.
    You need a lens (same focal length as the "normal" for whatever format you are using) and a negative carrier.
    If the enlarger was intended to be grounded, I'd use a different timer (assuming you house is wired correctly). If you don't have grounded outlets in your house it may not matter.
    The 'safelight off' function of the timer is a convenience thing.
    Exposure about 10 to 30 seconds. Most lenses have about a 3 stop range of good apertures to tweak your exposure time.
     
    Last edited by a moderator: Mar 15, 2012
  3. John Koehrer

    John Koehrer Subscriber

    Messages:
    6,463
    Joined:
    Apr 3, 2004
    Location:
    Montgomery,
    Shooter:
    Multi Format
    Adapting the plugs to the timer is no problem. If you want, you can ground the adapter to the case. That's what the wire's for
    The controls at the side of the unit are for a condensor head. At the top is a voltmeter, beneath it is a resistrol which allows controlling the brightness of the bulb.
    There are so many variables with exposure time paper, brightness of the lamp, height of the lamp housing above the paper, speed of the paper. You're really need to do some testing with the unit.
    I usually start with my "normal" negative and 10-20 seconds around f8 and do test strips.
     
  4. Eric Muetterties

    Eric Muetterties Member

    Messages:
    4
    Joined:
    Mar 15, 2012
    Location:
    Dublin, CA
    Shooter:
    35mm Pan
    Thanks guys! That helps.

    I wanted to ask before doing something stupid ?
     
  5. Eric Muetterties

    Eric Muetterties Member

    Messages:
    4
    Joined:
    Mar 15, 2012
    Location:
    Dublin, CA
    Shooter:
    35mm Pan
    New question regarding head distance to film

    This enlarger is missing the scale on the side of the enlarger for the distance between head and film for various film sizes.

    I was getting no light at the corners of prints and figured out that the distance needed to be adjusted. Does anyone know what the approximate distances should be for 35mm, 120 and 4 x 5 film? I am hoping someone has this combination and can give me something to start with.

    I am guessing that the original head scale might not be as accurate with the color head, or they just lost the scale strip.

    Thanks in advance!
     
  6. George Nova Scotia

    George Nova Scotia Subscriber

    Messages:
    590
    Joined:
    Mar 17, 2010
    Location:
    Milford, Nova Scotia
    Shooter:
    Multi Format
    With the color head - a diffuser head, crank it all the way down. The top bellows should be fully compressed with the bottom of the head ending up just above the negative carrier. Only the condenser head requires various adjustments and the scale...
     
  7. Eric Muetterties

    Eric Muetterties Member

    Messages:
    4
    Joined:
    Mar 15, 2012
    Location:
    Dublin, CA
    Shooter:
    35mm Pan
    Thanks!