Making the Back-loaded horn speaker

【Specification】
L(ホーン長さ): 2,555㎜
SO(スロート断面積): 10,500㎟
VA(空気室): 7,161㎤
Enclosure: Birch Plywood (t15㎜)
Glue①: Konishi Mokkoyo-Bond
Glue②: Franklin Titebond-ORIGINAL
Full range unit: Fostex FE163En-S (φ16cm)
Super Tweeter: Fostex T96A-EX2
Condenser: Fostex CS0.68 (0.68μF)
Terminal: Fostex T150B
Speaker Cable: AmazonBasics 12AWG
Solder: Goot (音響部品用)SD-65 φ1.2㎜(Sn60%/Pb40%)

[@RacerXGTO]

Sansui produced the SP-707J back loaded speaker using a JBL speaker. They are so rare. It's nice to see this cabinet being built again.

[@TheAlberto6842]

Very nicely built , wonderful craftsmanship !

[@Emmanuele_Valente]

Splendida realizzazione, complimenti! Io le ascolterei con un single ended monotriodo a riscaldamento diretto 🤩

[@miroslavnovotny5025]

please share more and more and more videos. You have done a great job and i'm really interested. just WOW

[@hifilover34]

Great work. I have the same driver and I want to do similar project. These Fostex drivers are awesome...

[@tisserandstephane7845]

Very good job your enclosure is the state of the art

[@user-oc8hl1zl1i]

thanks!!

[@brianraulerson5037]

Lovely work, old boy! Really well done!

[@MrDingaling007]

Very nice. And i am sure they sound amazing after the Fostex driver has been run in after 100 hours.

[@goranvuk8501]

You are an artist

[@tristansotomayor8354]

Amazing Would love to see more of your work!

[@albertogazzogarra6383]

Impresionante trabajo felicitaciones.

[@andredebacco]

Nice work !

[@anniga69]

Fantastic work....

[@user-oc8hl1zl1i]

thanks!

[@user-rt1io2vu8x]

素晴らしい技術で感心しました。私にはできそうもないです。 FE163En-s は２０１１年のユニットですね。保存状態もよくいい音でしょうね。

[@user-oc8hl1zl1i]

よくご存知ですね！ このスーパーツィーターも同時期に限定販売された物です。 日常が忙しく、設計から完成まで10年近くかかってしまいました…

[@vikassm]

Wow! Art 👍

[@sakudou01]

何と！　・・・　私と同じフルレンジを！ 私も同じフォステクスのFE163-E-改（改＝φ120×ｔ15のキャンセル・マグネット接着+磁気アース取付）を使用しています！ 片CH.２発のヴァーティカル・トゥイン配置です。 間には同じ、フォステクスの最安ホーンツイータであるFT17H-改（改＝防磁カバー撤去同径のキャンセル・マグネット接着＋樹脂製ホーン2か所に穴をあけシリコンコーキング材を注入-共振減衰用）を１発挟んでいます。 スコーカーはこれも同じフォステクスの古参ワイドレンジツイーターのFT600-改2発のヴァーティカル・トゥイン配置（改＝φ80×ｔ10のキャンセル・マグネット接着+磁気アース取付）の構成の３Wayです。 エンクロージャーは手造りで自作の145ＬのＴＱＷＴエンクロジャーです。 折けしの共鳴管長は３６０㎝ありますので、１/４波長共振周波数は23.5Ｈｚです。 中韓のリスニング・ポイントでの実測で、20Hz～18KHz間完全にフラットです。 このSP.システムの、およそ6年前の古い空気録音です。 kzbin.info/www/bejne/sHOng4qKq6hrmtE

[@tonytungsten4278]

Very good woodwork. Very very strange to fit the drivers before box complete and risk glue squeezing out and dripping onto drivers.

[@mistermagoo8928]

Con el baffle que recomienda el fabricante, suena exelente.

[@EduardoMendez-vm3yu]

MUY BUENAS CUAL ES LA MEJOR MARCAS DE BOCINAS DE BAJOS AGUDOS Y GRAVES OARA ACOPLAR UN BUEN PARLANTE??????

[@2802Ruslan]

Perfect!!!

[@user-oc8hl1zl1i]

Thank you!!

[@rmzidann]

Front baffle edge diffraction? Umm…. Nice build, but I would make sure the front baffles are rounded off at the edges as opposed to sticking out like the KLH 5 or the Wharfdale Linton. Edge diffraction is a real thing and can affect soundstage and imaging. Otherwise great build. Well done! 👍👍

[@carlhess512]

Can I get or buy a set of your build plans?

[@carlhess512]

Hello. Great wood working. Like you, I don’t use and mails in my speaker builds. And using the biscuits is well worth the extra time. You did you not use and felt inside on the back walls ? And would you share your build plans ? I have a pair of NOS Fostex FE166En drivers and your box build is just the box I’d like to build Thank you and will be watching more of your woodworking skilled videos

[@user-oc8hl1zl1i]

Thank you for your comment! I used biscuits for reinforcement, but I don't think it's a problem if you don't use them. The Fostex FE166En is a 16cm driver, so it can be used with this design. However, the build plans are hand-drawn and drawn in Japanese, so it may be difficult to understand.

[@sabolctar4702]

Nice work, do you have a drawing PDF from the plane?

[@user-oc8hl1zl1i]

No, this is just a handwritten drawing. thanks!!

[@yamahaha012000]

ベニア？なんだけどとても美しい仕上がり

[@user-oc8hl1zl1i]

ありがとうございます！ フィンランドバーチという白樺の合板で作りました。

[@machoje]

*THANK YOU FOR SHOWING HOW THEY SOUND…LET ME SQUEEZE A FART BRO*

[@alfa168fan2]

Where to order this kind of plywood? What is its name? Thanks

[@user-oc8hl1zl1i]

This plywood is Finnish birch. In Japan, it is often used for acoustics. The price is high... bought it here↓ gouhan.net/

[@thomasschafer7268]

Nice work.100%. Craftmn. Difficult to find japanese fostex horn plan. ( nagaoko) !!!!😩😩😩

[@user-oc8hl1zl1i]

thanks！ Nagaoka is famous, but I haven't used it as a reference.

[@drpainlesss]

What Wood is used for this build?

[@user-oc8hl1zl1i]

I used Finnish Birch plywood.

[@Alex-Paganini]

КАКОВ НОМИНАЛ КОНДЕНСАТОРА?

[@user-oc8hl1zl1i]

Емкость конденсатора 0,68 мкФ. ( 0.68μF) Я использовал CS0.68 от fostex. Спасибо.

[@AEROWINS45]

👍👍👍👍👍🙌🙌🙌👏👏👏👏👏🙏

[@Armonia2810]

ok you showed us that you are a good carpenter.. but nothing from a design... black midnight... no data, no reasoning, no calculation, no process... you found somewhere, a design of a rear funnel, copied it, and put the 2 first random loudspeaker you found in front of you without a crossover... Unacceptable... almost a cheat...

[@ClaudioMartella]

Those as fostex speakers and there was a crossover inside.

[@Armonia2810]

@@ClaudioMartella okay now we are enlightened. we realized that you have no idea about the design, calculation and construction of a speaker and just like a good carpenter you tried to copy a specific speaker by replacing the original speakers with whatever cheap you found on the market that fits the holes...

[@DirectX3]

People can't respond to your stupidity. Sorry, just can't. 😵‍💫

[@johankamarudin5155]

​@@Armonia2810yes, agree with you.

[@alland1241]

@@Armonia2810 Do you practice at being a tit because you're very good at it

[@kumchavalcha]

man of culture i see;)