DIY Sound Group HTM-12 Build

Discussion in 'DIY Speaker & Subwoofer Building' started by mkohman, Nov 18, 2017.

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  1. PsyVision

    PsyVision
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    I have some cheaper non-Stanley ones as I'm a tight arse but found them good/useful for assembling the cab. I found the Stanley corner clamps good, so based on that I'd get the Stanley band clamp. The cheapo corner clamps I also got were a bit sh*te for accuracy though.
     
  2. mattkhan

    mattkhan
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    I have them as well, they do a good job & are particularly useful for holding a baffle in position while you attach more clamps to really press it down. You do need to make sure the piece is supported (i.e. has something opposing the force of the clamp) mind you. I might just be a bit hamfisted but they really can be a PITA to attach due to the way the corner pieces attach to the strap and the way you have to manually pull the strap through. I think https://www.amazon.co.uk/Bessey-BESBAN700-BAN700-Band-Clamp/dp/B000JLSNGI are meant to be better on this front (note the handle that does that coarse adjustment) but 4x the price so....

    if you have irregular angles to clamp then https://www.amazon.co.uk/Bessey-BVE-Vario-Angles-BESBVE/dp/B0000224B4 are also useful
     
  3. mkohman

    mkohman
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    The Stanley Band Clamp is brilliant. It was £9.99 on amazon but whilst building I needed another one and didn't want to have to wait for delivery so I get one from screwfix for around £6.00 equally as good so either one will more than do the job[emoji106]
     
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  4. mkohman

    mkohman
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    Back on it today... Braces all installed now gluing on the front baffles.. Do you reckon that's enough clamps lol [emoji23] IMG_20171207_163445795.jpg IMG_20171207_163438682.jpg
     
  5. Liammonty123

    Liammonty123
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    Woah, I can see a spot around 20mm without a clamp, this could cause serious problems!
     
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  6. mkohman

    mkohman
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    @Liammonty123[emoji23][emoji23]
     
  7. mkohman

    mkohman
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    Whilst I fully appreciate that for some this may seem like a total overkill and the fact that I will probably never see the speakers unless I need to access them, I still wanted to make sure that the speakers look professional rather than a DIY job.

    That and the fact that I am really ocd with things like this, I spent the best part of this afternoon, routing all the corners of each speakers with a 9.5mm rounding router bit, sanding excess glue and prepping the speakers for primer stage.

    IMG_20171209_131140312.jpg IMG_20171209_131145194.jpg IMG_20171209_140450143.jpg IMG_20171209_140522912.jpg

    I had everything ready and was going to paint the first coat of primer, then I remembered that I still need to cut out the speaker terminal connections at the back of the speakers.. When facing the back of the speakers, 5 inches up, 4 inches across is where I marked the centre point.. After some careful measurements and calculations, patience and belief in myself (because today was the first time I ever used a router) I managed to get perfect round cuts which enables the speakers connections to fit in flush with the surface of the rear of the speakers cabinet... I hope you like the pictures :)

    IMG_20171209_150938372.jpg IMG_20171209_150947588.jpg IMG_20171209_151422068.jpg IMG_20171209_153828851.jpg IMG_20171209_153718934.jpg IMG_20171209_164937437.jpg
     
  8. Liammonty123

    Liammonty123
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    Looking brill them mate. With the amount of prep work you've put in im sure they will look pro when you've finished.
     
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  9. mkohman

    mkohman
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    Cheers Liam.. Much appreciated, I hope so too, let's see if I can pull off the paint job as well.. [emoji4][emoji106]
     
  10. markymiles

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    Looking good. 1st time with a router, you'd never know. :smashin:. I see you've got the forum favourite circle jig :)
     
  11. mkohman

    mkohman
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    Thank you.. I had no idea this jig was the forum favourite lol.. I was advised from a member on AVSFORUMS.. Also I got it from Germany.. [emoji4]
     
  12. mkohman

    mkohman
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    Minor update :

    During the week I did a bit of filling around the edges even though it was totally not needed but still wanted to do it just incase... I then took the speakers out into the garden and gave them a good sand with the orbital sander and 240 grit sand paper.

    After a good wipe down to get rid of the dust and particals , today I gave them the first coat of primer.. Tomorrow I'll sand down with 400 or 600 grit sandpaper then give them another coat of primer before moving onto 3 top coats of matt black... IMG_20171211_111740809.jpg IMG_20171212_121915908.jpg IMG_20171214_151713769.jpg IMG_20171214_155442350.jpg
     
  13. Liammonty123

    Liammonty123
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    Looking really good, bet you can't wait to finish them, have you decided what youre doing with the crossovers?
     
  14. mkohman

    mkohman
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    Cheers Liam, I'm taking my time with them as I want to make sure I finish them to a professional standard.. I think I'm just going to screw the crossovers to the left side panel.. It's the most secure way of doing it. With regards to cabling there is a HF LF and an IN terminal on the crossovers.. Am I right in thinking HF to the CD, LF to the 12" Eminence Woofer and the IN goes to the speaker cable connection terminals? What is the other two connectors Pad and the one next to it? Thanks
     
  15. Liammonty123

    Liammonty123
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    Why not just the back for ease? You may find it tricky to screw onto the side! Yes you are absolutely correct re wiring. The hf pad is just for bringing down the highs by a couple db if you don't have the speakers behind a screen, as most screens attenuate the highs slightly. So in your case and mine this isn't necessary!
     
  16. mkohman

    mkohman
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    I didn't want to at the back as I figure that's the most needed for dampening as it's directly behind the woofer hence the side.. However when I come to installing it, if it's too fidgety then I'll just install at the back lol [emoji23]
     
  17. Liammonty123

    Liammonty123
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    I myself was considering installing on the sides but as you say it was incredibly fidgety/near impossible when using offsets and screws. I've ordered some screws and offsets for mine and when they come I will be screwing them to the backs of the cabinets and covering back over with the polywadding!
     
  18. PsyVision

    PsyVision
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    Mine are on the side :)
     
  19. mkohman

    mkohman
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    That's awesome.. [emoji106] I would be very greatful if you could pm me the links for screws and offsets as I may also buy the same if you don't mind.. Cheers Liam
     
  20. mkohman

    mkohman
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    Hey dude.. Hopefully your well.. Did you also use different screws and offsets?
     
  21. PsyVision

    PsyVision
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    I got some offsets posted in my kit. Not sure what they came with, the crossover kits maybe? I then just got some suitable screws from Wickes and voila.
     
  22. mkohman

    mkohman
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    Cool I also got some offsets but there tiny ones , they came with the kit.. Is that what you used? Also what type of screws did you use? The screws it's supplied with seem a bit short.. Cheers Rich.
     
  23. mkohman

    mkohman
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    Guys, need some advice.. I am going to do 1 more coat of primer/undercoat (or maybe 2 more) and then I want to do possibly 3 coats of matt black paint. I was initially planing on spraying with matt black spray cans but my only worry was not being able to get an even coat all around so I think I am going to stick with foam roller which leaves a brilliant spray effect ..

    The paint I am looking at is as below:

    Wilko Quick Dry Matt Paint Black 500ml

    Would appreciate if anyone could chip and advise if this seems suitable for the task.

    Thank you in advance :)
     
  24. PsyVision

    PsyVision
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    I just used the spacers that came with the kit. The black ones that offer ~1cm spacing. Then just normal wood screws, 20/25x4mm or something I think.

    Paint wise, I just used matt black dulux emulsion paint so anything (what you have linked) will do. Don't use blackboard paint though, that was crap.
     
  25. mkohman

    mkohman
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    Managed to put 2 more coats of primer today whilst sanding with 320 grit sand paper in between coats.. In total 3 coats of primer.. I think tomorrow I'll pop round to Wilko's and buy that matt black paint. I'll try to get first coat on tomorrow afternoon...
    IMG_20171215_170757605.jpg IMG_20171215_170812561.jpg IMG_20171215_174926123.jpg
     
  26. PsyVision

    PsyVision
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    Looking good!
     
  27. mkohman

    mkohman
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    Cheers @PsyVision [emoji106]
     
  28. mkohman

    mkohman
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    I think 3 coats of primer/undercoat worked out really well .. Ready for matt black tomorrow. I will go over them lightly with 400 grit before first coat of matt black.. Then 400 grit between each coat.. Aiming for 3 coats [emoji106] IMG_20171215_201511353.jpg IMG_20171215_201519707.jpg IMG_20171215_201541954.jpg
     
  29. The Dreamer

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    It must be a lot warmer where you are than at our place! I can’t even work in the garage to get my frames finished, let alone start on building the speakers!

    I’ve still got my HTM-12s and V6s sat in the garage in their boxes - no way could I do anything with them until it warms up a bit!:(

    Going Stateside again tomorrow - this’ll be the first time in a while that I haven’t come back with speakers of some sort!:D (Though I’ll probably pop over to Home Depot and find some tools to bring back :facepalm:)
     
  30. mkohman

    mkohman
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    It's actually very cold lol, however I have been building these speakers in the spare loft bedroom which is very warm lol hence why I am able to make progress.. If it was summer I would have been doing work in my garage too, however the fact that I have sold my speakers and have nothing at moment has been pushing me to finish them.. The only time I ever had to work outside was when sanding and when I had to round all the edges with the router..

    Have a safe trip and I hope you will start on your HTM-12's soon.. Your room is looking amazing by the way.. Hope you have many years of enjoyment.. Keep up the great work [emoji106]
     

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