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 NEW  Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

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PostPosted: 30 May 2009, 12:25 
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Joined: 30 May 2009, 12:11
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speakers made from pvc pipes, housing a 3 inch HiVi B3N, and a Hi-Vi T20-8 tweeter, rear firing bass port. 2-way crossover inside with binding post on back, wood platform with spikes. frequency range 65-20,000. nice sound stage and good low end response. would love to know what you think of the design.
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PostPosted: 30 May 2009, 16:42 
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Joined: 28 May 2008, 21:53
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Location: Winnipeg, CANADA
Hi ikymagoo. Welcome to the forum.

The pvc pipe speakers look great. Can you post a schematic of the cross-over? Did you damp the enclosure and are you getting any ringing?

For those interested in PVC pipe speakers, also take a look at some of the builds by Rob Sampson: http://www.t-linespeakers.org/projects/sampson/

Cheers

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PostPosted: 30 May 2009, 17:19 
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thanks,
i bought the crossover from parts-express so i don't have a schematic, the low pass output rolls off at 6 dB per octave and the high pass section has a 12 dB slope. Yes i did dampen the inside, i have some cotton socks glued to the inside of the PVC, no ringing, but i do get some mid-bass humming from the pipes but it's not to big of an issue.
i had fun building them, and i think they sound great. and look pretty cool :)


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PostPosted: 31 May 2009, 10:07 
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Do you recall what the crossover frequency is?

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PostPosted: 13 Aug 2009, 00:28 
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Joined: 13 Aug 2009, 00:23
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Hey ikymagoo

I'm planning my first ever speaker build and I'm basically going to rip this idea off (apologies) but using a small, full range driver!

How do you ensure a snug fit between driver and PVC? I assume you get PVC with a diameter slightly larger than that of the driver? Where do you go to find PVC? Any other suggestions? Thanks man, and come visit this thread for updates.


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PostPosted: 13 Aug 2009, 18:01 
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Hi,
Thanks for liking so much you want to make your own, the inside of the PVC pipe was a little bit bigger than the speaker so i used some foam speaker tape on the inside of the pipe, it worked pretty good. i got the PVC at Home Depot, prices aren't too bad, i was just going to a full range with a bass port off to the side but i added the tee instead of an elbow and added a tweeter, with the bass port at the back of it. the hardest part was the painting. it was a fun project. here is a video of them
Attachment:
PVC-Pipe-DIY-Speakers.jpg



Hope you have fun making yours and let me know if you have any questions
Eric


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PostPosted: 14 Aug 2009, 17:19 
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I like them! Nice job and it looks like it was fun. Bet your friends think you are a geek, but kinda cool to :)
Ri

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PostPosted: 19 Aug 2009, 02:40 
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Cool project and nice speakers.

I have two pairs of HiVi 2" speakers and planned to do something like this (see below).
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Attachment:
shoe-speaker.jpg


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PostPosted: 19 Aug 2009, 05:23 
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Sexxxayyy 8-)

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PostPosted: 20 Aug 2009, 20:27 
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I think that a pair of long legs would look better in those shoes! ;)

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