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Thread: NrT Upgrade instructions with video!

  1. #1
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    Exclamation NrT Upgrade instructions with video!

    Sierra-1 NrT Upgrade Instructions


    --> Link to order the NrT Upgrade Kit

    Recommended Tools:

    Phillips head screwdriver
    1/2" Hex Nut Driver (1/2” socket)
    Stubby handled Phillips head screwdriver (short handle)

    1 Remove the Tweeter Video Link

    a) Gently lay the speaker back so the front of the speaker is facing upward.
    b) Using the Phillips head screwdriver, carefully remove the (4) screws from around the perimeter of the tweeter and set them aside.
    c) Lean the speaker forward and carefully remove the tweeter and gasket from the cabinet.
    d) Gently remove each female wire connector from the tweeter’s male terminals. You will need to gently wiggle the connector to remove it from the terminal. Do not apply too much force or you will risk damaging the tweeter and/or the connector itself.

    2 Remove the Woofer Video Link

    a) Using the Phillips head screwdriver, carefully remove the (4) screws from around the perimeter of the woofer and set them aside.
    b) Lean the speaker forward and carefully remove the woofer from the cabinet.
    c) Gently remove each female connector from the woofer’s male terminals. You will need to gently wiggle the connector to remove it from the terminal. Do not apply too much force or you will risk damaging the woofer and/or the connector itself.

    3 Remove damping material and disconnect the crossover lead wires Video Link

    a) Reach inside the cabinet, fold the white Dacron batting material in half and then pull it from the cabinet.
    b) Using the 1/2" Hex nut driver, carefully remove the securing nut from each of the two binding posts on the inside of the cabinet and set these aside.
    c) Using your fingers, remove the lock washer that is underneath the nut you just removed and set these aside. The crossover lead wires should now be free.
    d) Remove the red and black crossover lead wires from the binding post terminals.

    4 Remove the old crossover Video Link

    a) Examine the crossover board which is secured on the bottom of the speaker cabinet. Locate the (4) securing screws at each corner of the crossover board.
    b) Using the stubby handled Phillips head screwdriver, carefully remove each of the (4) screws and set these aside. Please be careful to avoid damaging any of the crossover components.
    c) After all (4) screws have been removed, remove the crossover from the speaker cabinet.

    5 Install crossover screws Video Link

    a) Using the same screws that you removed from the crossover, insert these into the (4) screw holes in the NrT crossover.

    6 Install NrT crossover into speaker cabinet Video Link

    a) Look inside the speaker cabinet and find the (4) screw hole inserts on the bottom baffle.
    b) Place the NrT crossover inside the cabinet such that each mounting screw is lined up with each corresponding screw insert. Align the crossover such that the two crossover lead wires are in the back of the cabinet and the woofer and tweeter wires are towards the front of the cabinet.
    c) Using the stubby handled Phillips head screwdriver, gently tighten down each mounting screw, making sure that each screw is tightening down in the screw insert. The crossover board must not bend so take your time.

    7 Attach crossover lead wires to binding posts Video Link

    a) Place the crossover lead wires back onto the binding post terminals. Please make sure to keep red to red and black to black.
    b) Install the lock washers that were removed in step 3, part c.
    c) Install the nuts that were removed in step 3, part c.
    d) Using the 1/2” Hex nut driver, tighten down the securing nuts. These should be tightened so that the binding posts on the back of the speaker are secure and will not twist or turn.

    8 Reinstall the damping material Video Link

    a) Grab the woofer and tweeter crossover wires and position them so that they hang outside the speaker cabinet.
    b) Fold the damping material in half and place it back into the cabinet.
    c) Unfold the damping material such that it now covers the internal walls of the cabinet.

    9 Install the new tweeter Video Link

    a) Grab the red and black crossover wires and insert them through the opening in the shelf brace and then out through the tweeter opening.
    b) Place the tweeter gasket into the tweeter cutout and position it such that all (4) screw holes are aligned.
    c) Using the red and black crossover wires, gently push the female terminals back onto the corresponding male terminals on the new tweeter.
    d) Place the new tweeter back into the speaker cabinet.

    10 Reinstall the woofer Video Link

    a) Grab the brown and black crossover wires and pull them outside the speaker cabinet through the woofer opening.
    b) Using the brown and black wires, gently push the female terminals back onto the corresponding male terminals on the woofer.
    c) Place the woofer back into the speaker cabinet.

    11 Insert the woofer and tweeter securing screws Video Link

    a) Using your hands, manipulate the positioning of the woofer and tweeter such that the screw holes in each component align with the screw holes in the loudspeaker cabinet.
    b) Insert the (4) woofer mounting screws and (4) tweeter mounting screws. Note, these use the same screws. Hand tighten each screw.

    12 Tighten all screws Video Link

    a) Using a Phillips head screwdriver, securely tighten down all (8) screws. Do not over tighten!

    Congratulations, you are finished
    Last edited by davef; 05-21-2018 at 04:26 PM.
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    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

  2. #2
    Join Date
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    Default Re: NrT Upgrade instructions with video!

    Awesome, Dave! Looks simple enough. Just awaiting the parts to arrive.

    Not to be picky, but........

    In step 10 you say "new woofer", when in fact the original woofer is being reinstalled. Might want to clear that up to avoid any confusion.
    Ed

  3. #3
    Join Date
    Jun 2010
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    Default Re: NrT Upgrade instructions with video!

    Nice job on the instructions.

    I'm on my way to ACE to pick up a 1/2" nut wrench.....

  4. #4
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    Default Re: NrT Upgrade instructions with video!

    Quote Originally Posted by Mag_Neato View Post
    Not to be picky, but........

    In step 10 you say "new woofer", when in fact the original woofer is being reinstalled. Might want to clear that up to avoid any confusion.
    Thanks for catching that!
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    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

  5. #5
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    Default Re: NrT Upgrade instructions with video!

    My pleasure, Dave! Actually, it is something I've become accustomed to being in a technical position.

    If you don't mind my asking, have the NrT kits started to ship?
    Ed

  6. #6
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    Default Re: NrT Upgrade instructions with video!

    Quote Originally Posted by Mag_Neato View Post
    My pleasure, Dave! Actually, it is something I've become accustomed to being in a technical position.

    If you don't mind my asking, have the NrT kits started to ship?
    Yep .... It is a bit insane over here today but yes, NrT kits are shipping out today, tomorrow, Thursday etc. We hope to have all kit orders shipped by this Thursday.

    Later today I will post a pic of all the crossovers that are waiting to be tested (exclusively by me of course). I am grateful that we took care of all of the billing in advance -- getting all of these out in combination with our current Thanksgiving Sale orders has pushed us to the limits of our capabilities
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    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

  7. #7
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    Default Re: NrT Upgrade instructions with video!

    Here is a batch of over 100 tested crossovers that will be shipping tomorrow (or at least most of them )
    Attached Images Attached Images
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    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

  8. #8

    Default Re: NrT Upgrade instructions with video!

    That's a crazy picture - thanks for sharing

    Really puts into perspective what you are up against!

    Can't wait to get mine - but please don't rush things!

    BK

  9. #9
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    Default Re: NrT Upgrade instructions with video!

    Reality sinks in! It's easy to forget the scope of a project until you are faced with the actual volume of it, and the steps required to expedite it.

    Dave, do the new tweeters require hand tweaking of the damping material by you guys? Thought you had mentioned that in a post somewhere.
    Ed

  10. #10
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    Default Re: NrT Upgrade instructions with video!

    Quote Originally Posted by bk_856er View Post
    That's a crazy picture - thanks for sharing

    Really puts into perspective what you are up against!
    And that is less than half of what we have to ship

    We are getting through it though
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    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

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