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BrianHP - PE Vifa M18-08-08 mark

104.35.189.164
Posted on April 27, 2023 at 14:18:40
Edp
Audiophile

Posts: 4503
Joined: September 23, 1999
 Since came from Areial Acoustics, tossed together a mini-Model 10T (except finishes reversed on enclosures)

Paired with Vifa PL11WG and Vifa D25ag.

Fun but not a Vifa M26 growl unit. Still does f3 of 35 (no Room boost) and f10 of 27 ( Room boost included )
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Again thanks for heads up on very limited supplies of Unobtainiums

 

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RE: BrianHP - PE Vifa M18-08-08 mark, posted on May 3, 2023 at 11:42:58
mark.korda@myfairpoint.net
Audiophile

Posts: 1253
Location: Maine
Joined: August 16, 2011



Hi, I made these from a sheet of plywood on my front porch. The 6.5 inch coax from Parts Express cost me 25.00 and was a Vifa from Denmark. I 'm half Danish so I painted the flag with some model paint. The design is a Weems Pipe with some added mods inspired by Frank Van AlStine, modeling clay. I power them with a Heathkit AA -32 and use a Titanic sub woofer with a BASH amp.......I keep changing stuff around like you guys must but this is my flag ship to date.......Mark Korda

 

Were those the A17WG of old or a newer version?, posted on May 6, 2023 at 08:35:21
Edp
Audiophile

Posts: 4503
Joined: September 23, 1999
 They offered several different tweeter coax versions.

The Vifa Coax series ( except for the M&K 4") are very rare, with a interesting demand by folks looking to use a low powered tube amp building units much like yours. The somewhat higher efficiency and suitable for sealed or TL loading.

I have old catalogs that referenced a foam surround A16 version with even higher efficiency but have never actually seen one

Was the clay used for terminal tuning or for enclosure/line resonance control?

 

RE: Were those the A17WG of old or a newer version?, posted on May 6, 2023 at 15:30:36
mark.korda@myfairpoint.net
Audiophile

Posts: 1253
Location: Maine
Joined: August 16, 2011
 Edp, there is a piece of plywood inside the enclosure in sort of a bass reflex affair but it is actually a tapered pipe. There is a little section inside at the front of the pipe where a small brace goes across as in Weems dimensions. Instead of leaving in hollow I packed it with Plastistine Clay. My goal was to lower the point of resonation. These portrait a perfect stand up bass as I grew up with one sitting in the living room.My father played it in a community symphony. I know the feel of resonation when I plucked that bass. Take care Edp...Mark Korda

 

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