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Paul Carmody's Swope MTM build from India

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  • DeZZar
    replied
    They look great - especially for a first build! Well done. Now you can sit back and enjoy the music!

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  • Jeanpher
    replied
    Hello Everyone,

    I had caught up with some personal work, couldn't find time to finish the speakers. Finally last weekend I took some time to finish the speakers. The material I chose is Virgo 0.8mm wood grain pattern. I tried to match the grains pattern from side to side, it came out pretty good. I have learned many things from my mistakes in this project and you could see that in the details. I am very happy and satisfied with how it came out after finishing.

    Thank you all members of this forum for helping me in some way to finish this project. Special thanks to Chris Roemer for helping me with all queries.

    Attached Files

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  • DeZZar
    replied
    I would definitely recommend a laminate finish - it is a LOT of work to get a satisfactory paint finish over MDF. I've seen professionals apply laminate to MDF first and THEN apply the paint finish to get a better result.

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  • Jeanpher
    replied
    Weekends are awesome Finally, I got some time to put together everything and had a good listening session too. Initially, when I listened to it, I felt like something is missing in HF. Then I checked the wiring and found one of the tweeter polarities has been reversed. Oh, Thank God you helped me figure it out soon. It sounds good looking forward to inviting my friends to listen to it post COVID. Thanks again Paul for such a nice design.

    I am planning to finish it either with paint or laminate sheet, any ideas, please comment.
    Click image for larger version

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  • Chris Roemer
    replied
    Sorry, I misspoke.
    BOTH your XO pics look correct. I (mentally) swapped the 22uF NPE w/the 6.8uF pp cap (which has a smaller value, but is larger in size - since it's NOT an npe).

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  • Jeanpher
    replied
    Originally posted by Chris Roemer View Post
    I THINK your 1.5ohm (tweeter) series resistor needs to go to the other end of the coil (so the cap, coil, & resistor make a "T" - like in Paul's schemo).
    If I'm seeing your layout correctly ... ?
    As per the schematic below one end of the resistor should connect to 68uf cap and 0.4mh inductor, which I have done, if I connect to another end of the coil, that is to the 22uf cap to the woofer, then it is wrong rite?

    Click image for larger version  Name:	MTM XO Layout mod.jpg Views:	0 Size:	79.2 KB ID:	1469963

    Or I misunderstood, you may be talking about the placement of the parts in layout, does it matter really?

    Click image for larger version

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  • Chris Roemer
    replied
    I THINK your 1.5ohm (tweeter) series resistor needs to go to the other end of the coil (so the cap, coil, & resistor make a "T" - like in Paul's schemo).
    If I'm seeing your layout correctly ... ?

    Leave a comment:


  • Jeanpher
    replied
    I have done chamfering and lined the wall with acoustic felt. I have arranged the crossover parts and haven't done the proper soldering, just waiting for the expert's approval to go ahead.

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    Attached Files

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  • davidB
    replied
    At least you have a good helper there.

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  • unclejunebug
    replied
    Looking good! Nothing some filler won’t solve. Mistakes are just part of the process

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  • DeZZar
    replied
    Whoops!

    Oh well...at least you remembered to mirror the tweeter offsets. I finished up routing out speaker cutouts in a project once with offset tweeters and looking at them side by side after I realised I marked the both out on the same side.... Had to cut a plug, glue and fill and try again!!

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  • Jeanpher
    replied
    Today I had some time to route the holes. I have made some mistakes too like forgot to lock the depth couple of times, Will fix it with wood filler or putty.
    Click image for larger version

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  • DeZZar
    replied
    Looking great!! Hope you can get them finished soon!! 👍

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  • Jeanpher
    replied
    Update: I got some time this week, so I have put together the other enclosure too except the baffle, even I trimmed the edges using the router. it looks like only a minor sanding necessary later.

    Click image for larger version

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    I have decided to use a double-layer baffle, done the cutout too.

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    Just the speaker holes to be routed, experts tips to do so are most welcome. The dry fit looks perfect

    Click image for larger version

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    There is so much sawdust in my house, So I need to complete this soon before being kicked out of the house.
    Using a router without proper workplace and gears was a bad idea, should have taken it to a carpenter.

    There is heavy continuous rain in our place(Kanyakumari) so there is often power failure, which again slows down my progress. Hope it will be better tomorrow.

    So far so good thank you for looking.

    Regards
    Jean

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  • Jeanpher
    replied
    Update: Last Sunday, I got some time to put together the one of the enclosure. Without clamps it was very difficult job keep it in place(square) when drilling and screwing. Somehow with my brothers help, I could put it together. Waiting for next Sunday.
    Click image for larger version

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    Attached Files

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