SDA Driver Seals: Original Foam vs. Mortite vs. Armaflex Foam

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  • Toolfan66
    Toolfan66 Posts: 16,895
    edited January 2012
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    Round it is..

    Is the 1.875 center to center on the holes? Also will .250 holes be ok or do you need them to be a different size?

    Colors? I probably can come close to matching any color you would like.
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  • DarqueKnight
    DarqueKnight Posts: 6,764
    edited January 2012
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    thejck wrote: »
    How do u pull the old drivers off if you used mortite. They are a pia.

    I made a small prying bar from a 8-1/2" piece of coathanger wire. I flattened the prying end a little bit (reduced thickness about half) to make it easier to get under the rim hole.

    I still use the pry bar with my Armacelled drivers. Of course, the Armacell does not cause as tight a fit as the Mortite, but the Amacelled drivers don't always fall right out after unscrewing.
    Proud and loyal citizen of the Digital Domain and Solid State Country!
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  • heiney9
    heiney9 Posts: 25,079
    edited January 2012
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    thejck wrote: »
    How do u pull the old drivers off if you used mortite. They are a pia.
    Toolfan66 wrote: »
    I pulled the crossover and pushed from the back side then worked my way up.. I don't miss mortite at all..

    Mortite has been in place over 2 years now and I've taken the speakers apart twice, never a single issue. Actually the Mortite stays in place on the back of the drivers. Not sure why you are having issues.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • DarqueKnight
    DarqueKnight Posts: 6,764
    edited January 2012
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    Toolfan66 wrote: »
    Is the 1.875 center to center on the holes?

    Yes.
    Toolfan66 wrote: »
    Also will .250 holes be ok or do you need them to be a different size?

    I had to take one of the screws out and match the plate hole to my drill bits. The holes are 3/16". With the large flathead screws I am using, 1/4" holes would work.
    Toolfan66 wrote: »
    Colors? I probably can come close to matching any color you would like.

    Black.
    Proud and loyal citizen of the Digital Domain and Solid State Country!
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  • Toolfan66
    Toolfan66 Posts: 16,895
    edited January 2012
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    Consider it done!!:smile:
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  • DarqueKnight
    DarqueKnight Posts: 6,764
    edited January 2012
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    Thanks. Send me a PM with cost and shipping.
    Proud and loyal citizen of the Digital Domain and Solid State Country!
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  • thejck
    thejck Posts: 849
    edited January 2012
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    heiney9 wrote: »
    Mortite has been in place over 2 years now and I've taken the speakers apart twice, never a single issue. Actually the Mortite stays in place on the back of the drivers. Not sure why you are having issues.

    H9

    One of my braces had come loose and i had to pull a driver to get to it. I struggled with the driver and ended up having to use a screw driver to pry on it which nicked the wood slightly and I am not too trilled about it. I ended up using a screw that was able to grip the screw hole on the basket and use that to pry. I am not sure what damage this has caused and I have had a really frustrating day cause of it.

    When I installed the mortite I pushed it onto the basket and then screwed it onto the wood. When I pulled it off half of it was on the basket and the rest on the wood. I even had used poly urethane on the wood before I installed the mortite to prevent it sticking.
    I am using Larrys rings as well and maybe that is what is causing the sticking.
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  • thejck
    thejck Posts: 849
    edited January 2012
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    going to try this in the morning.
    Isnt the Armacell only sticky on one side?
    You said you cut the tape at a 1/4 inch did you end up getting 4 strips from each section or was there some cutting waste.

    DarqueKnight wrote: »
    I made a small prying bar from a 8-1/2" piece of coathanger wire. I flattened the prying end a little bit (reduced thickness about half) to make it easier to get under the rim hole.

    I still use the pry bar with my Armacelled drivers. Of course, the Armacell does not cause as tight a fit as the Mortite, but the Amacelled drivers don't always fall right out after unscrewing.
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  • DarqueKnight
    DarqueKnight Posts: 6,764
    edited January 2012
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    thejck wrote: »
    going to try this in the morning. Isnt the Armacell only sticky on one side?

    Yes, the Armacell is only sticky on one side, but some of my drivers have a snug fit which requires some extra effort to remove them. I made the small end of the prying bar 3/8 inch long.

    One clarification: I call this a "pry bar", but I don't use a prying action where the flat end is inserted in a driver's rim hole and the bar is pressed downward to pry the rim up. The flat end is inserted in the rim hole 1/8" to 1/4" and the tool is pulled outward.
    thejck wrote: »
    You said you cut the tape at a 1/4 inch did you end up getting 4 strips from each section or was there some cutting waste.

    I cut 1/2 inch strips. The Armacell is 2 inches wide, so this allowed four 1/2 inch strips per section:
    DarqueKnight wrote: »
    Marks 1/2" apart were made on the Amaflex's backing at regular intervals. Ink and pencil marks did not easily adhere to Armaflex's yellow wax paper backing, therefore a fine point ink pen was used to punch holes and then the pen and straight edge (24" drafting T-square and 48" carpenter's level) were used to scribe cutting guide lines.
    Proud and loyal citizen of the Digital Domain and Solid State Country!
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  • vmaxer
    vmaxer Posts: 5,116
    edited May 2013
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    Old thread, great info.
    Pio Elete Pro 520
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    Micro Seiki DD-40 - Lyra-Dorian and Denon DL-160
    PS Audio GCPH phono pre
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    Workkout room:
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    Ft - SDA 1C

    Not being used:
    RTi 38's -4
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    RT25i's -2, using other 2 in shop
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  • xschop
    xschop Posts: 4,684
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    11 years later, and still relevant. Enjoy reading Ray's findings.
    nooshinjohn wrote: »
    qwertycus wrote: »
    replacing the plastic brackets with something more substantial, maybe machined from aluminum or steel?

    Looks like a job for SUPERLARRY! (aka Toolforlifefan):tongue:


    Put me down for six in natural brushed aluminum.:biggrin::cool:

    First time reading this post. So someone was pondering alloy faceplates back in the day.

    And F1 didn't blow a fuse lol
    Don't take experimental gene therapies from known eugenicists.
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  • pitdogg2
    pitdogg2 Posts: 24,559
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    Anything Ray did is always going to be relevant when it comes to SDA's.
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  • skipshot12
    skipshot12 Posts: 999
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    Absolutely relevant 11 years later.

    I’m going thru this right now and, all that came before saved me from the headaches of trial and error….
    I thank you all.

    Skip
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