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Old 6th October 2011, 03:11 AM   #21
doorman is offline doorman  Canada
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Your speakers are gorgeous & innovative!
Well done!
don
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Old 6th October 2011, 07:55 AM   #22
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Location: Lisbon
Quote:
Originally Posted by markaudio View Post
Hi Martin,
If you can get the Yam for a nice price and its in good condition, could be a good buy. Talking of amps, I'm hunting for an all-Japan Luxman 503S this during the coming week in Tokyo - see pic. I've gotta a bit of the "love thing" for vintage Japanese Moffys.

Cheers
Mark.
wow , nice looking Luxman. i have a friend not using a luxman 384A he has but i cant convince him to sell it.

i already offered him 600€ , ive seen them on 2nd hand market for 400/500€ still wont sell.
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Old 6th October 2011, 08:29 AM   #23
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One piece spherical CHR-70.3 cabinets were made by a diyer in China.
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Old 6th October 2011, 12:33 PM   #24
EUVL is offline EUVL  Europe
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Jan,

I am very pleased to see how your IKEA bowls have turned out.




Patrick
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Old 7th October 2011, 11:56 AM   #25
ma10 is offline ma10  United Kingdom
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Jan, those look very good, especially the cone at the back!

Musik007, I like the finish on the wood on those. I was tempted to stain mine.
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Old 7th October 2011, 05:16 PM   #26
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Hi Pactrick,

Your Alpair 6 IKEA bowl looks great.

Tony.

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Jan,

I am very pleased to see how your IKEA bowls have turned out.




Patrick
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Old 8th October 2011, 11:13 AM   #27
ma10 is offline ma10  United Kingdom
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...Looking at the bowls, I'd think a 1" (25-mm) diameter port X 50-mm long, Fb around 54Hz, F3 around 49Hz, looks reasonable. This should get you started. I guess you'll try to squeeze them in the lower real bowl? You might want to try 60-mm long to kick off and trim back depending on room placement, your listening preference etc.

Other members might like to try on their software, offer some additional variations on my calcs.

Cheers
Mark.

I think I will add a port but not sure on the placement... would adding it to the back half (where the binding posts are) be ok?
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Old 8th October 2011, 01:37 PM   #28
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I think I will add a port but not sure on the placement... would adding it to the back half (where the binding posts are) be ok?
Hi Martin,
Greetings from Tokyo (just arrived for the shows).
Yes, add to the back half, in place of the binding posts is OK; Or leave the posts and position the port just above (or below if there's room). I'd suggest above to avoid the cables.

Cheers
Mark.

Last edited by markaudio; 8th October 2011 at 09:09 PM.
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Old 8th October 2011, 06:13 PM   #29
ma10 is offline ma10  United Kingdom
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Originally Posted by markaudio View Post
Hi Martin,
Greetings from Tokyo (just arrived for the shows).
Yes, add to the back half, in place of the binding posts is OK; Or levee the posts and position the port just above (or below if there's room). I'd suggest above to avoid the cables.

Cheers
Mark.
Hi Mark, thanks for replying! I couldn't seem to find ready made ports as small as 25mm so had to make some:

Click the image to open in full size.

The silver colour top parts are "collers" for fishing rods with some black electrical conduit couplers which were 25mm and has a combined length of ~70mm. ~10mm for speaker wall, 60mm for the actual port (50mm if I push the coupler further in):

Click the image to open in full size.

I decided to place them under the binding posts in the end, simply because it will less likely to become a dust collector and the wiring still seems ok I think! Anyway, here's a quick shot of the back with the port installed:

Click the image to open in full size.

It definitely has more Oomph! now but going to listen a bit longer to make sure!

Mark, thanks once again and hope you have a great time in Japan!!
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Old 8th October 2011, 09:13 PM   #30
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Hi Martin,
Looking good, pretty much how I thought they'd look. Excellent work on making your own ports!

Cheers
Mark.
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