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In the Forum: Horn-Loaded Speakers
In the Thread: Bye-Bye, Fane
Post Subject: Community m4 is a dud?Posted by mjloudspeaker on: 8/15/2009
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thanks for the help, romy, this is im8, it works, which is good.

This is what I think of m4. taken from website I made, when I could not post here. I will keep it up, as info for this driver is very rare, not much out there about it.

Personally, I like the industrial appearance and it is charming and endearing to me, in both utility and sound. Stock it is very flawed by design, sorry Community! But the intent to create a fine driver is there, and they have done it, in my opinion. So from http://communitym4.wetpaint.com/ the development of this for musical use. The work is so simple, really.

From the site:

"1- Purpose
The use of the largest, most powerful commercial PA usage critical midrange driver for critical, high fidelity application for home, or other use.

2- Problems
Stock unmodified driver suffers from some acoustical problems, all related to it's intended Sound Reinforcement Public Address Use;

(a)- "Lack of Tone"

(b)- Some specific "Frequency Band Colourations" and "Resonances", as heard by me.

(c)- A "Dead" or "Flat" Sounding Quality

(d)- A "Not Right" Sound, evidenced by listening to driver without horn loading, "in the Raw", a proven technique to evaluate qualities in any driver.

3- Some Thoughts on the Original Design
The Stock Driver as conceived by Community seems optimized for the following purposes, and employs the following devices;

(a)- Impervious to the Natural Elements when used Outdoors, "it's intended location", with Rugged, Long Life, Sealed and Gasketed Fiberglass Housing, Plastic Surround, and Aluminium or Carbon Fiber Diaphragm Cone .

(b)- Front Chamber Design, which directs all Acoustical Energy "Sound", to the 4" (four inch) Exit, and includes a Concentric Design Phase Plug, which channels this "Sound" and "Boosts" some frequencies by several Decibels of Total Output.

(c)- Removal of the Front Chamber and Phase Plug reveals that my version has aluminium cone, with Plastic Surround.

4- Findings
This Driver listened to "in the Raw" reveals it's true character and qualities, with immense and intricate sound potential. Romy the Cat's flat out dismissal seems premature, and maybe was done with the stock unmodified driver.

(a)- No front chamber is required for my use.

(b)- No phase plug is required for my use.

(c)- The additional acoustic gain (helpful in a Public Address Venue) is not required in my use.

(d)- The driver sounds effortless, accurate, with very good balance, and with a musical softness, and I can listen to it "in the Raw", and miss it, when it is taken away.

(e)- The vertical design horn is the candidate for this driver, to free up space in the room, a la Romy, visit his site, and search "Hanging MidBass Horn", however, this horn will be smaller, for 200 Hz upwards use.

(f)- The low opinion of many who have heard the stock item, and the undesirability of it because of these opinions, makes this driver not wanted for other than intended PA use, and also makes it a great buy on Ebay! MY OPINION HERE.

(g)- This driver has had much effort and development in it's design, and cannot be underrated any longer, it is a significant step forward in sound reproduction, and cannot be discounted lightly, and I will tailor its output to my audio needs.


5- Future
Uploading pictures next, some videos, and horn.
"

I am excited about this one, go figure.
Take care, j.

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