Pics baby Fostex FE83 2-inch driver on large Yuichi horn - diyAudio
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Old 16th August 2015, 09:38 AM   #1
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Default Pics baby Fostex FE83 2-inch driver on large Yuichi horn

For fun, I swapped out my Faital Pro HF200 drivers and added in the baby 2 inch Fostex FE83 paper cones I had lying around.

The existing system consists of:

Tweeter: Faital Pro one inch CD with matching FP alloy horn

Mid horn: Azura 340 Hz horn with Faital Pro HF200 CD

Mid bass: 12 inch Kappalite in sealed birch box (hidden behind the large Walnut cabs)

Bass: Bill Fitzmaurice Table Tuba, with 8 inch Tang Band driver. (To be veneered.)

Amps: six channel Holton Precision audio power amp, plus separate pro amp for sub

Xover: MiniDSP 2x8

Source: Spotify, I-phone, Pure docting station, digital to xover.

Great sound, very 'big', and wide/high sound stage.

With the baby Fostex drivers, the sound is more laid back, more 'analogue.' I'm very impressed...and with tuning, I think these would/could make for a great start into horns. We're comparing $100 of drivers vs $600.

A fun project.
Attached Images
File Type: jpg fostex 83 rear.jpg (77.1 KB, 221 views)
File Type: jpg fostex 83 up close 2.jpg (64.0 KB, 215 views)
File Type: jpg fostex 83 up close.jpg (50.7 KB, 213 views)
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Old 16th August 2015, 09:43 AM   #2
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A few more pics, including CNC'd stands in Walnut ply. CNC routered hole for Faital Pro tweeter.
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File Type: jpg single cab.jpg (57.2 KB, 212 views)
File Type: jpg stand 2.jpg (100.9 KB, 210 views)
File Type: jpg stand.jpg (82.2 KB, 82 views)
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Old 16th August 2015, 11:24 AM   #3
Scott L is offline Scott L  United States
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Default excellent !

Now, this is what I call a great idea !
Taking advantage of the entire flare rate !

I have often wondered why [very] large horns are constructed with only
2 inch throats (?)
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Old 16th August 2015, 04:10 PM   #4
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Quote:
Originally Posted by atilsley View Post
2 inch Fostex FE83 paper cones
Andrew, it is a 3" driver (80mm).

A good use for the driver. What about trying FF85wk?

dave
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Old 16th August 2015, 10:47 PM   #5
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Quote:
Originally Posted by planet10 View Post
Andrew, it is a 3" driver (80mm).

A good use for the driver. What about trying FF85wk?

dave
Thanks Dave....I had the FF83 spare, so they got a look in initially.

I realised it was 3 inch after I posted...interetsinglly, the size of the actual cone is exactly 50mm (2 inches)...that's how I made the mistake.

With the FF85wk, what would you suggest are the main advantages...the power rating is ismilar...but seems to have more xmas. The high freq range is impressive...but isn't that academic as I'm only using the bandwidth of 700Hz to 3,500Hz? I guess if someone wanted to build a two way, then this drver owuld be a good contender.

Kind regards.

Andrew
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Old 16th August 2015, 10:51 PM   #6
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The main advantage … at least in a box/baffle … is that it sounds better. They get really good when treated.

Click the image to open in full size.

In a box they can reach about an octave lower than the FE83.

dave
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Old 16th August 2015, 10:56 PM   #7
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OK, thanks Dave...that's very intresting.

Do you hear from many folk about using paper cones in horns, isntead of CD's (generally speaking)? The difference in price, for example, is huge.
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Old 16th August 2015, 10:58 PM   #8
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I don't pay much attention to front-loaded horns, but i have heard about many using cones, and domes horn loaded.

dave
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Old 16th August 2015, 11:07 PM   #9
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OK, thanks again.

All the best.
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Old 17th August 2015, 02:51 AM   #10
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Quote:
Originally Posted by atilsley View Post
Thanks Dave....I had the FF83 spare, so they got a look in initially.

I realised it was 3 inch after I posted...interetsinglly, the size of the actual cone is exactly 50mm (2 inches)...that's how I made the mistake.

Andrew
Hardly a mistake.
A 2" diameter Cone is a 2" Speaker, even (especially IMO) in Aus.
Complete unadulterated 'Brochure Babbles'.. no more .. no less.
Why not add in the Bezel diameter while at it ? Or the box it came in.
Reads too much like a braggart in a Bar telling a hapless woman about the size of his 'apparatus'.
Think she might Laugh when faced with the reality?
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