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 NEW    Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

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Fostex-FX120-Fullrange-Driver.jpg
Fostex-FX120-Fullrange-Driver.jpgFostex FX120 Fullrange Driver8172 viewsCloseup of the Fostex FX120 fullrange driver used in a T-Line Speaker Box. For more info, see the Fostex FX120 MLTL Speaker Enclosure project page.
DIY-TQWT-Fostex-FX120-Speaker.jpg
DIY-TQWT-Fostex-FX120-Speaker.jpgDIY ML-TQWT Fostex FX120 Speakers8458 viewsA pair of DIY Fostex FX120 Mass Loaded - Tapered Quarter Wavelength Tube (ML-TQWT) Speakers.
PIC-0128.jpg
PIC-0128.jpgBig open baffle speakers8359 viewsThese huge speakers belong to a member of the local audio club and were used in a demonstration of the use of sound baffles to remove unwanted reflections. They consist of a plate amp powered 10" woofer, a co-planar and normal cone mid-range and two small soft dome tweeters. Also a titanium dome tweeter was mounted on the rear and could be switched in or out. The woofer crossover point and volume was also adjustable. Big BASS!
Fostex-FE126E-Bass-Reflex.jpg
Fostex-FE126E-Bass-Reflex.jpgFostex FE126E in DIY 12L Bass Reflex Cabinets 9270 viewsThese are a small pair of 12L Fostex FE126E in 1/2" solid pine BR enclosures. The port is 2" x 4". They do sound great though with surprising bass from the FE126E. They are 9.5" square...I know square...but I found it helps reinforce the bass.
Goldwood-Open-Baffle-Speakers.jpg
Goldwood-Open-Baffle-Speakers.jpg8" and 15" Goldwood Open Baffle Speakers9784 viewsGoldwood 8" full rangers whizzers and all (Qts 1.07) which should do the trick for the midbass lacking with the low Qts Fostex FE126E. The Goldwood 8 inchers have great bass in OB compared to the Fostex and really don't need that much bass augmentation.I ran the 8" full range and LP the 15" Goldwood subs in at 60hz. Nice deep bass, nice midbass punch and smooth highs. This speaker has a nice vintage tone that is definitely on the warm side. Just how I like it.
Goldwood-Open-Baffle-Speakers-Back.jpg
Goldwood-Open-Baffle-Speakers-Back.jpgGoldwood Open Baffle Speakers - Rear View11619 viewsRear view of 8" and 15" Goldwood drivers on an open baffle.
Fostex-FE127E-DIY-Bass-Reflex-Loudspeaker.jpg
Fostex-FE127E-DIY-Bass-Reflex-Loudspeaker.jpgBass Reflex Speaker with Fostex FE127E 8034 viewsThis is a Bass Reflex Speaker using the Fostex FE127E Fullrange Driver.

Related
DIY Bookshelf Bass Reflex Speakers with Fostex FE127E
Fostex-FX120-Bookshelf-Coral-Flat-6B-Speakers.jpg
Fostex-FX120-Bookshelf-Coral-Flat-6B-Speakers.jpgDIY Fostex FX120 and Coral Flat-6B Bass Reflex Speakers8270 viewsDIY Bass Reflex Speakers. The larger speakers are 6.5"-7" (depending on how you measure them) Coral Flat-6B's. The build cost for them where about 2/3's that of my Fostex FX120 Speakers. I am going to dampen the stamped Coral frames some day, just to hear if it makes a difference. But so far I have nothing but praise left for these old drivers. They are 20+ years old, but they still kick ass.
Fostex-FX120-DIY-Bass-Reflex.jpg
Fostex-FX120-DIY-Bass-Reflex.jpgFostex FX120 Speaker in Bookshelf Sized DIY Bass Reflex Enclosure7379 viewsDIY Bass Reflex Speakers using the Fostex FX120 Fullrange Driver.

Related
DIY Fostex FX120 Bookshelf Bass Reflex Speaker Project
Fostex-FE207E-1-cubic-foot-bass-reflex-speaker.jpg
Fostex-FE207E-1-cubic-foot-bass-reflex-speaker.jpgFostex FE207E - DIY 1 ft^3 Bass Reflex Enclosure8342 viewsFostex FE207E fullrange drivers in 1 ft^3 ported box. The speaker enclosure was built by another local MA fellow, Dave Jacobsen. I also like these speakers very much.
Radio-Shack-40-1354-ML-TQWT.jpg
Radio-Shack-40-1354-ML-TQWT.jpgRadio Shack 40-1354 ML-TQWT Speaker8739 viewsThis is the Bob Brines folded TQWTs for the Radio Shack 40-1354 fullrange drivers. The dustcaps have been removed and phase plugs installed. With the phase plugs, I've stopped using super tweeters with these. They are awfully satisfying. The great wood work was completed by Mike Berg, who built the cabinets for me!
Fostex-FE167E-Bookshelf-Speakers.jpg
Fostex-FE167E-Bookshelf-Speakers.jpgDIY Fostex FE167E Bookshelf Speakers in Listening Room9222 viewsA pair of DIY Fostex FE167E Bookshelf Speakers in the Listening Room.
By Gary E (MN, USA)
Fostex-FE167E-Bass-Reflex-Bookshelf.jpg
Fostex-FE167E-Bass-Reflex-Bookshelf.jpgDIY Fostex FE167E Bass Reflex Bookshelf Speakers8641 viewsClose up view of the Fostex FE167E fullrange driver in the 15L Fostex FE167E Speakers Recommended Bass Reflex Enclosure
By Gary E (MN, USA)
Fostex-FE103E-Asymmetrical-Bass-Reflex.jpg
Fostex-FE103E-Asymmetrical-Bass-Reflex.jpgDIY Fostex FE103E Asymmetrical Bass Reflex Speakers8032 viewsDIY Asymmetrical Bass Reflex enclosure for the Fostex FE103E Driver.
Fostex-FE103E-Asymmetrical-Bass-Reflex-Makore.jpg
Fostex-FE103E-Asymmetrical-Bass-Reflex-Makore.jpgFostex FE103E Asymmetrical Vented Speakers8458 viewsAsymmetrical Bass Reflex Speakers using the Fostex FE103E Driver with a Makore finish.

Fostex-FX120-Frequency-Response-150mm.png
Fostex-FX120-Frequency-Response-150mm.pngFostex FX120 Frequency Response7968 viewsFrequency Response plot of a Fostex FX120 Fullrange Speaker. The measurements were made on-axis at 6 inches (150 mm) from the driver using a Radio Shack 33-2050 SPL Meter.
Fostex-FX120-Magnet.jpg
Fostex-FX120-Magnet.jpgFostex FX120 Speaker Mounted on Baffle10247 viewsThe Fostex FX120 Fullrange Speakers have a removable rubber ring that goes around the magnet. The baffle is 1" thick, so I used to router to make a 1/2" chamfer to give the driver some room to breathe. The hookup wire is plain 22 ga copper.
PE-Curved-Speaker-Box-Inside.jpg
PE-Curved-Speaker-Box-Inside.jpgInside of Curved Parts Express Cabinet10593 viewsInside view of the 0.38 ft^3 Curved Parts Express Cabinet. The baffle fits in tightly and is held in place with four nuts.
Fostex-FX120-Bass-Reflex.jpg
Fostex-FX120-Bass-Reflex.jpgFostex FX120 in Bass Reflex Speaker Box11798 viewsThe front baffle is MDF and you can see the deep piano gloss finish on the curved enclosure. The grill is held in place with magnets and is included with the cabinet. See the Fostex FX120 DIY Bass Reflex Bookshelf Speakers page for more information.
Fostex-FX120-BR.jpg
Fostex-FX120-BR.jpgFostex FX120 in Bass Reflex Enclsoure9134 viewsHere is a front and rear view of the finished Fostex FX120 Bass Reflex Bookshelf Speakers. The cabinet size is about 0.38 ft^3 and tunned to about 63 Hz. See the page for more information.
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