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Old 24th January 2010, 07:21 AM   #11
diyAudio Member
Join Date: Jul 2008
Location: Pacific Northwest
Originally Posted by jason_watkins View Post
Lookin' good bko. I recall you're near pdx metro area?

I just got the shipment notification on my mcm's. I'm targeting 30hz or lower for HT however. I think I'll steal your rather nice handle idea .
Be sure to use an appropriate high-pass to protect your drivers. I've got a pair of MCM 55-2421s in a 30-Hz tapped horn currently, they will bottom out with extreme LFE (Batman Begins) when turned up (~105 dB at the couch, so only ~50 watts into the pair).
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Old 25th January 2010, 11:12 PM   #12
bko69 is offline bko69  United States
diyAudio Member
Join Date: Mar 2009
Location: PDX
My THs are finally done! They look good and they sound good to my ear, but i'm a little embarrassed to post the final measurements. I'm not sure what went wrong. My test box had better measurements. Must be the 45s i put in the corners for the handles.

Click the image to open in full size.
Click the image to open in full size.

the full photo set can be seen here: Tapped Horn build

30hz 30db
35hz 49db
40hz 64db
45hz 70db
50hz 73db
55hz 76db
60hz 78db
65hz 80db
70hz 81db
75hz 82db
80hz 83db
85hz 84db
90hz 84db
95hz 86db
100hz 87db


Last edited by bko69; 25th January 2010 at 11:15 PM.
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Old 26th January 2010, 12:01 AM   #13
jbell is offline jbell  United States
diyAudio Member
Join Date: Apr 2003
Location: .
LIVE SOUND Specific Tapped Horn thread...

yep, each reflector can make a big difference.....
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Old 18th June 2015, 02:38 AM   #14
diyAudio Member
Join Date: Apr 2015
Nice job! would like to build a pair for a friend!
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