The Metronome

[planet10]

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

 

[GM]

Here's a Scottmoose Alpair 7P Metronome in Hornresp that can be easily manipulated using the Loudspeaker Wizard:

GM

 

[AmadeusMozart]

It must be a record - this thread still going after all these years. I've seen plans for the bipole FE126e and wonder if anyone built those and what the feedback is. Similarly I wonder if anyone made a bipole with the FE103E.

Thanks, AM.

 

[mightym]

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

 

[yildiray35]

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/metronomeFE167-1v0-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

 

[Jim Shearer]

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

 

[yildiray35]

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!

 

[Sarchi]

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"?

 

[planet10]

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

 

[jackinnj]

@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.

 

[nuconz]

@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.

maybe should have been pm?

 

[Sarchi]

Thanks Dave.

Jack, that's my father in law in the pics. His hands are fine, it's just a photo illusion.

 

[Sarchi]

Some build pics. One speaker is close to built.

 

[Sarchi]

Hoping to hear them by sometime tonight. Nickname so far "High Hopes"

 

[GM]

High Hopes - Frank Sinatra : YouTube

GM

 

[jackinnj]

For folks in US, Canada and Mexico, I could have the Metronome panels CNC cut and powder coated in white or black (or uncoated if you wanted to veneer). Would probably need to run 100 sets to make it economic.

High Hopes - Frank Sinatra : YouTube

GM

On a live recording from Las Vegas, Sinatra said that he pitied people who didn't drink, because the best they were gonna feel is when they woke up in the morning.

 

[nuconz]

For folks in US, Canada and Mexico, I could have the Metronome panels CNC cut and powder coated in white or black (or uncoated if you wanted to veneer). Would probably need to run 100 sets to make it economic.

~ how much per set?

 

[Sarchi]

I did get mine running on Monday evening, and they sound really good. 👍

 

[Sarchi]

Every Metronome plan is driver specific. You'd have to get 100 people wanting to build it with the same driver??

 

[GM]

On a live recording from Las Vegas, Sinatra said that he pitied people who didn't drink, because the best they were gonna feel is when they woke up in the morning.

Having 'lived' on both sides of this 'road', there's a certain amount of truth to it, but overall prefer the mostly 'dry' side.

GM