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Single 12" bass Cab


DIYjapan
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I can see what you mean. However if it is for stopping draughts then it ought to work. Unless it's from the Y100 store :) It will be crushed when you screw the baffle down remember so my thought is that it should be fine. It's impossible to be sure from a photo at this distance. Go ahead and if you think it's an issue later you can always replace it.

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So I finished. From wood, screws, parts, speaker and wire to a completed bass cabinet in under 30 days. That's a new land speed record at my house. All in all I am very pleased with the look of the finished cab. After some very brief testing I think it sounds good. Better than the old hartke combo it's replacing (though, I still like my little combo).
I learned a lot on this project and for all the great advice on parts, software, how-to's, and encouraging I would really like to thank everyone who contributed. I never could have finished in the fashion and with the confidence that I did without everyone's help. Thanks so very much.

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I would just buy an Acme lowB


best cab i have owned

bracing video - [url="https://youtu.be/uJy3TscsL-U"]https://youtu.be/uJy3TscsL-U[attachment=251744:IMG_0936.JPG][/url]

[url="https://youtu.be/uJy3TscsL-U"][attachment=251745:IMG_0936.JPG][/url]

Edited by deepbass5
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  • 1 month later...

Update: Used my set up (TC Electronics BH250, DIY Cab) at a recent outdoor art festival. I was pleased with the sound on the stage and could easily hear myself over the guitar and piano players with out needing any floor monitors or being mic'd to the PA. The sound technician for the show was a fellow bass player and he said that the cab sounded fine. To some `Fine` may not be heavenly praise but to a first time builder I was elated. The bass player from the band that followed us came up and oogled the cab too saying that it looked really good. Several guys said that it reminded them of a traditional style of Japanese cabinet carpentry.

Again, I'd really like to express thanks to everyone who helped me on this journey.

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  • 2 weeks later...

Hi-pass filter question.
I was tempted to buy a 80hz High pass filter from Parts Express to stop any harmful / needless info going to the speaker.
If what I've read is correct the 80hz would actually start cutting things off around the 80 hz with w/a slight roll off down to 60hz.
I was originally looking for a 50 hz High pass filter but they didn't have one and I haven't got a clue on how to make/design one.
Any help ?

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+1 for the Thumpinator.
Essential bit of kit if your amp has no built-in HPF.
My Mesa Subway D800 has it built-in but my Fender Rumble 500 head does not and it's worth every penny to clean up and control the bottom end and improve the efficiency of your speaker cab.

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[quote name='deepbass5' timestamp='1503233436' post='3356571']
I would just buy an Acme lowB


best cab i have owned

bracing video - [url="https://youtu.be/uJy3TscsL-U"]https://youtu.be/uJy3TscsL-U[attachment=251744:IMG_0936.JPG][/url]

[url="https://youtu.be/uJy3TscsL-U"][attachment=251745:IMG_0936.JPG][/url]
[/quote]Why? You sacrifice sensitivity for low end that you do not need.

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[quote name='Gottastopbuyinggear' timestamp='1509698067' post='3400888']
If you're also DIY inclined in the electronics area then try the fdeck HPF pre. I built one from this layout: [url="http://tagboardeffects.blogspot.co.uk/2015/01/hpf-technology-hpf-pre-2.html"]http://tagboardeffec...-hpf-pre-2.html[/url]
[/quote]

+1. I did the same and wouldn't play without it now.

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I was originally looking for a 50 hz High pass filter but they didn't have one and I haven't got a clue on how to make/design one.
Any help ?



If you want to make one, google for Sallen-Key high-pass filters - they're second-order (12dB/octave), you'd want two cascaded to give you fourth order (24dB/octave). Edited by tauzero
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  • 2 weeks later...
  • 3 months later...

Got the  fdeck HPF pre over the christmas holidays and have had a few chances to try it out with my DIY amp.

I will have to say that it really helps keep the driver under control. It may be just me but it seems to be more forceful not necessarily louder but the notes hit more clearly and have a bit more umphff to them. So, my two thumbs up for this small handy little device. Thanks for the heads up.

 

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  • 1 month later...

WIRING Help please.

I made a second cabinet to use with this first cabinet. Same design more or less. In the second cabinet I have two neutrik speakon connectors (Neutrik NL4MPR). The driver in both cabs are Eminence Beta 12a-2.  I need to know how to wire it all correctly.

I was thinking to wire the driver to the 1+/1- on the Neutrik NL4MPR then the 2+/2- on that same Neutrik NL4MPR to the 1+/1- on the second Neutrik NL4MPR.  

option 2: wire the driver to the 1+/1- on the Neutrik NL4MPR then the extra +/- of the driver to the 1+/1- on the second Neutrik NL4MPR. 

These are used with Speakon classic pro cable 2 core cable.

Urgent!

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Wiring: update - please let me know if this is the wrong way. Thanks.

so i wired the speakon 1+\- to the driver. 

Then the 2+\- to the second speakon. 

I hoped this would let me connect my original bass cab to that second speakon. NO dice.

 

so I wired the 1+\- on speakon to the driver. Then the drivers second connectors to speakon #2’s 1+\- . Then i could connect my second cab without any problems. 

 

The drivers are 8 ohm. In this configuration does that make it a 4ohm load for my amp? Or 16? 

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If you have wired this all correctly (it looks like you have) then the speakers are in parallel and the combined impedance is 4ohms.

Well done by the way. I'm so pleased your cab worked out well enough for you to build a second. You'll be amazed at just how much that second speaker does for your sound.

  • Thanks 1
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So I made a second bass cab which I recently posted about. It is more or less the same as the first cab that I made in this thread. I didn't add too many photos to this thread but I was able to make a Youtube video of the second cabs build. I will put a link to the video here. I am not sure if that runs a foul of the Basschat rules or not... if it does then to the admin please let me know and I will happily remove the content. If it is OK then I'd love to share my build with all of you. Cheers.

https://youtu.be/cskZJGpgIfs

Here is the link to my YouTube video. Thanks.

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