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Old 21st August 2017, 10:43 PM   #1481
planet10 is offline planet10  Canada
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The Metronome
All the sims Scott did were in Martin's sheets, but any TL Modeler should do. The approximation is close enuff that one can just model an ML-V (ML-TQWT).

dave
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Old 22nd August 2017, 06:13 AM   #1482
GM is offline GM  United States
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Here's a Scottmoose Alpair 7P Metronome in Hornresp that can be easily manipulated using the Loudspeaker Wizard:

GM
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File Type: txt Alpair7pMetro_SM.txt (972 Bytes, 95 views)
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Old 12th October 2017, 12:34 PM   #1483
AmadeusMozart is offline AmadeusMozart  New Zealand
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It must be a record - this thread still going after all these years. I've seen plans for the bipole FE126e(n) and wonder if anyone built those and what the feedback is. Similarly I wonder if anyone made a bipole with the FE103E(n).

Thanks, AM.
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Old 13th October 2017, 09:52 PM   #1484
mightym is offline mightym  United States
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Quote:
Originally Posted by planet10 View Post
All the sims Scott did were in Martin's sheets, but any TL Modeler should do. The approximation is close enuff that one can just model an ML-V (ML-TQWT).

dave
Thanks Dave,

I don't know how I missed the reply back on August... I just got E Mail notification today on the latest post, and saw your answer.

I have an ML-TQWT simulator I can use.

John
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Old 17th January 2018, 06:16 PM   #1485
yildiray35 is offline yildiray35  Turkey
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Hi Friends , i like Metronome project. It's look like very eays for building and it's looking very nice. I have got a pair Fostex fe167e drivers on bass reflex cabinet. I want build a metronome and i read 30 page on this topic and i will continiue to read. I find metronome plan for FE167e on Dave web site. ( http://p10hifi.net/FH/download/metro...67-1v0-map.pdf ). But i don'd find measures of the top section and port. My other question : Will i use any insulating material on the inner surface? Thanks to everyone and best regards.
Yildiray
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Old 17th January 2018, 08:40 PM   #1486
Jim Shearer is offline Jim Shearer  United States
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yildray35,

Checking my notes from when I built an FE167e Met 8 or 9 years ago, I used:
port Dia = 3"
port L = 2"
cabinet dimensions:
internal height = 60"
Z(driver) = 30"
S(0) = 4" x 2.5"
S(L) = 10" x 7"

Cover ONLY the BACK interior surface with felt or acoustic foam; IIRC, I used foam; probably 1.5" egg-crate style foam, but I'm not sure.

I did use BSC; 0.7 mH and 1.5 R; but this will depend on your preferences and room conditions.

Cheers, Jim
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Old 18th January 2018, 06:06 AM   #1487
yildiray35 is offline yildiray35  Turkey
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Quote:
Originally Posted by Jim Shearer View Post
yildray35,

Checking my notes from when I built an FE167e Met 8 or 9 years ago, I used:
port Dia = 3"
port L = 2"
cabinet dimensions:
internal height = 60"
Z(driver) = 30"
S(0) = 4" x 2.5"
S(L) = 10" x 7"

Cover ONLY the BACK interior surface with felt or acoustic foam; IIRC, I used foam; probably 1.5" egg-crate style foam, but I'm not sure.

I did use BSC; 0.7 mH and 1.5 R; but this will depend on your preferences and room conditions.

Cheers, Jim
Thanks my friend! Now I clarified in my head.
Cheers!
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Old 21st July 2018, 08:12 PM   #1488
Sarchi is offline Sarchi  Canada
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I hope nobody minds if I bump this up with a dumb question . I've read about 30 pages of this topic but far from all of it.

I'm building the FE127e Metronome, and the plan shows a 2" radius port (terminus). My question is, should I cut a 2" hole, in which case the tube's inner diameter will be 1.5 - 1.75"? Or is it the inner diameter of the tube that has to be 2"?
Attached Images
File Type: jpg IMG_20180721_130812640.jpg (481.8 KB, 171 views)
File Type: jpg IMG_20180721_154257577_HDR.jpg (394.1 KB, 161 views)
File Type: png Screenshot_20180721-161438.png (139.2 KB, 160 views)

Last edited by Sarchi; 21st July 2018 at 08:15 PM.
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Old 21st July 2018, 08:23 PM   #1489
planet10 is offline planet10  Canada
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The Metronome
Inner diameter is 2”. You can use commonly available plumbing pipe.

If you need to change the diameter: http://p10hifi.net/FAL/downloads/ChangingPortSize.pdf

dave
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Old 22nd July 2018, 12:34 AM   #1490
jackinnj is offline jackinnj  United States
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The Metronome
@sarchi -- from the picture i am wondering if you have lost the terminal 2 digits from the fingers on your hand -- i used to work in a die casting factory where some of the punch press operators were similarly afflicted.
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