Author Topic: Got a Fostex Fe127 - What enclosure dillema?  (Read 7943 times)

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Offline darkangel69

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Got a Fostex Fe127 - What enclosure dillema?
« on: Aug 07, 2014 at 04:38 PM »
Help po sa mga pdvd members natin diyan, just want to have your suggesstions on enclosure design that would work with Fostex FE127.

TIA.
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Offline CoolTOYZPH

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #1 on: Aug 07, 2014 at 05:04 PM »
Same dilemma as yours. I have the fostex 120A and also unsure on what box to use.
Fostex 120A http://www.madisoundspeakerstore.com/approx-5-fullrange/fostex-f120a-5-full-range-with-alnico-magnet/

I am inclined towards the Pencil Cut FA box but would like to hear the comments of existing users.
http://diyaudioprojects.com/Speakers/Fostex-FX120-ML-TQWT/

Sorry for the Hi-jack of the thread.
Anyway I read the recommended box for the FE127 is the sealed bi-pole.
http://diyaudioprojects.com/Drivers/FE127E/FE127E.htm


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Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #2 on: Aug 07, 2014 at 05:36 PM »
Same dilemma as yours. I have the fostex 120A and also unsure on what box to use.
Fostex 120A http://www.madisoundspeakerstore.com/approx-5-fullrange/fostex-f120a-5-full-range-with-alnico-magnet/

I am inclined towards the Pencil Cut FA box but would like to hear the comments of existing users.
http://diyaudioprojects.com/Speakers/Fostex-FX120-ML-TQWT/

Sorry for the Hi-jack of the thread.
Anyway I read the recommended box for the FE127 is the sealed bi-pole.
http://diyaudioprojects.com/Drivers/FE127E/FE127E.htm

No need to apologize sir CoolTOYZ, I hope diy speaker masters here will give us some reccomendations on what enclosure should we need. Anyways I'm not in a hurry naman since I have other projects as well awaiting my time...
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Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #3 on: Aug 07, 2014 at 05:38 PM »
I'm thinking if I would use the mid/bass drivers of the Pioneer S-99t since I don't use them anymore (got another floorstander w/c sounds great to my ears).
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Offline Gino

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #4 on: Aug 07, 2014 at 05:51 PM »
I made 5 liter ported boxes tuned to 100hz.  This was Bob Brines' suggestion. In his words the factory recommended 10liter boxes are a joke. They sound too bright. I use a 10" sub with it. Fantastic SQ with a mini tube amp for my desktop.

If you will not use a sub, I recommend the Frugel Mk2 boxes. These are small back horn floorstanders. Since the sound will work with the floor and back wall, speaker placement is important.

You can see my bookshelf build in the Speaker: Speaker DIY'ers thread.
« Last Edit: Aug 07, 2014 at 05:59 PM by Gino »

Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #5 on: Aug 07, 2014 at 06:50 PM »
I made 5 liter ported boxes tuned to 100hz.  This was Bob Brines' suggestion. In his words the factory recommended 10liter boxes are a joke. They sound too bright. I use a 10" sub with it. Fantastic SQ with a mini tube amp for my desktop.

If you will not use a sub, I recommend the Frugel Mk2 boxes. These are small back horn floorstanders. Since the sound will work with the floor and back wall, speaker placement is important.

You can see my bookshelf build in the Speaker: Speaker DIY'ers thread.

Will check your build sir, thanks for the insight and help, highly appreciate it... ;D
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Offline Gino

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Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #7 on: Aug 07, 2014 at 06:56 PM »
By the way would an MTM have great results with the Fostex FE127 along with 8" mid/bass?
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Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #8 on: Aug 07, 2014 at 07:00 PM »
Nice build! Are these speakers your designs sir? Do you have measurements? I think this would be fine with the Fostex FE127 that I have.





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Offline CoolTOYZPH

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #9 on: Aug 07, 2014 at 07:02 PM »
Gino, if you do not mind, why did you decide on a BS instead of FS since your room is big enough?
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Offline Gino

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #10 on: Aug 07, 2014 at 07:05 PM »
I don't recommend that. Integrating the sound will be more trouble than it is worth. You will have to deal with crossovers. Very good ones will be very expensive.

You will also have to consider the speaker sensitivity. The 8"er must have a sensitivity of 93db too to match the FE127.

Sensitivity is also affected by the box design. To build a floorstander with the 127 and the 8 inch, you are in principle building two boxes on to of each other.

My reco is a pair of bookshelf speakers plus a sub or a standalone floorstander. Frugel, pensil, bass reflex.

Offline Gino

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #11 on: Aug 07, 2014 at 07:16 PM »
@darkangel, I designed that and cleared with Bob Brines. The final dimensions will depend on the thickness of your board. I used 15mm sheets and 50mm inside diameter x 75mm length ports. Internal box volume is 5 liters. Box external dimensions using 15mm sheets is 154mm width x 256mm height x 213mm depth. adjust accordingly for you wood thickness.

@Cooltoyz, I went with bookshelfs plus sub because I was building a desktop system for my Mac. The Frugel Mk2 are really short floorstanders. That is why those are angled upwards. They must also be placed correctly since they load the floor and wall. You cannot put these on stands or they will not sound right.

« Last Edit: Aug 07, 2014 at 07:26 PM by Gino »

Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #12 on: Aug 07, 2014 at 07:19 PM »
I don't recommend that. Integrating the sound will be more trouble than it is worth. You will have to deal with crossovers. Very good ones will be very expensive.

You will also have to consider the speaker sensitivity. The 8"er must have a sensitivity of 93db too to match the FE127.

Sensitivity is also affected by the box design. To build a floorstander with the 127 and the 8 inch, you are in principle building two boxes on to of each other.

My reco is a pair of bookshelf speakers plus a sub or a standalone floorstander. Frugel, pensil, bass reflex.

The reason why I'm asking if the 8" will work with an MTM is because the Pioneer S-99t take up too much space on my living room and I'm not using them anymore.
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Offline Gino

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #13 on: Aug 07, 2014 at 07:22 PM »
Don't use them. Your life will be simpler. Sell them and get an 8" or 10" active subwoofer with speaker level inputs.

Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #14 on: Aug 07, 2014 at 07:22 PM »
@darkangel, I designed that and cleared with Bob Brines. The final dimensions will depend on the thickness of your board. I used 15mm sheets and 50mm inside diameter x 75mm length ports. Internal box volume is 5 liters. Box external dimensions using 15mm sheets is 154mm width x 254mm height x 210mm depth. adjust accordingly for you wood thickness.

@Cooltoyz, I went with bookshelfs because I was building a desktop system for my Mac. The Frugel Mk2 are really short floorstanders. That is why those are angled upwards. I also find bookshelf plus sub combo much more flexible. If these were for my home audio room, I would have built Frugels.

Will ask my local furniture shop if they can build me a box for the Fostex drivers that I have. I have a dining table made of solid wood (cherry), puwede kaya gamitin yun?
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Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #15 on: Aug 07, 2014 at 07:23 PM »
Don't use them. Your life will be simpler. Sell them and get an 8" or 10" active subwoofer with speaker level inputs.

Sir Gino kahit nga bargain na no takers pa rin dun sa Pioneer FS ko, yun din problema ko... ;D
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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #17 on: Aug 07, 2014 at 07:27 PM »
Yun nga eh, walang gusto bumili. So why do you want to have an undesirable speaker in your system? Ditch them and build proper speakers.

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #18 on: Aug 07, 2014 at 07:43 PM »
This discussion is going nowhere. Balitaan mo na lang kami.

Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #19 on: Aug 07, 2014 at 07:45 PM »
This discussion is going nowhere. Balitaan mo na lang kami.

Sorry sa OT sir Gino, salamat po sa mga insights.
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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #20 on: Aug 07, 2014 at 08:07 PM »
@Cooltoyz, ang ganda ng mltl box sa link mo. Very nice speakers you have there.

Offline CoolTOYZPH

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #21 on: Aug 07, 2014 at 08:21 PM »
Sir Gino, do you recommend the box design?

@Cooltoyz, ang ganda ng mltl box sa link mo. Very nice speakers you have there.
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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #22 on: Aug 07, 2014 at 08:36 PM »
I've not heard that particular speakers but I've heard TL boxes before. They pack a wallop in the bass department. Even for small drivers (3"-6"), the amount of bass is surprising. Of course it will depend on room dimension and speaker placement. Smaller wide band drivers tend to have a smoother mid to highs curve.

If you have the time, you can mockup ML boxes using corrugated cardboard and duct tape. This way you can have an idea of its sound.

Offline CoolTOYZPH

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #23 on: Aug 07, 2014 at 08:55 PM »
Naku Sir that is the biggest problem... time!   :-\

If you have the time, you can mockup ML boxes using corrugated cardboard and duct tape. This way you can have an idea of its sound.
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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #24 on: Aug 07, 2014 at 09:01 PM »
Anthony is your man. He built the first TLs for Wiredstate 10 years ago. Gaganda pa ng wood veneer niya.

Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #25 on: Aug 07, 2014 at 09:03 PM »
Naku Sir that is the biggest problem... time!   :-\


Problema nga yan sir, pero paunti unti naman siguro puwede matapos project na gustong mabuo.

@Gino Sir sana naman huwag mag-conclude kaagad about the issue of building a "case", humihingi ako ng mga payo ng mga masters natin dito sa PDVD at hindi para magmukha pa na ako ang magaling. Sabihan mo lang ako ng maayos at sa tamang paraan para mas lalo kong maintindihan. Ako ay isa lamang mangmang kumpara sa inyo sa larangan ng paggawa, ayoko ng argumento gusto ko happy tayo lahat dito.
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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #26 on: Aug 07, 2014 at 09:06 PM »
OK. Sige.

Offline darkangel69

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #27 on: Aug 07, 2014 at 09:10 PM »
OK. Sige.

Salamat po sa pag-intindi... ;D

Mabalik tayo sa enclosure design, meron bang kaso kung mabigat na kahoy ang gagamitin kagaya ng cherry? Ang plano ko ay gayahin ang design mo sir Gino, tama lang ang sukat para sa desktop PC na gamit ko sa room.
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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #28 on: Aug 07, 2014 at 09:22 PM »
Maganda ang Cherry. Gaano kakapal iyan? Mas makapal, masmalaki ang final speaker dimensions. Akin 15mm ang wood sheet.

Oh ang box ko tuned sa 100hz. This means by itself, mahina ang overall bass.  Walang gapang. Kailangan ng sub. Pero malutong ang midbass. Enough na hindi tunog lata. Ok ang mga vocal and guitars. Kung compared sa usual pc speakers, these are better sounding. Swak sa T-amp. Malakas ang volume niya even with as little as 3.5watts.

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Re: Got a Fostex Fe127 - What enclosure dillema?
« Reply #29 on: Aug 07, 2014 at 09:28 PM »
25mm po ang kapal, if ever ba kung heavy and sturdy na frame kailangan pa ba ng bracing sa loob? Ok lang nman yung tuning to 100hz since mga papakinggan ko lang using the planned speaker ay mostly for vocals and instruments heavy songs. Yung isang DIY FS ko ay enough na LF nun para sa mga ibang genre na pinapakinggan ko. Ang amp ko na ipaparis ay yung Sony TA-1055a, 20watts lang po ito at warm sounding sa iba kong speaker.

Paano pala yung pag-tune sa isang desired frequency? Kailangan ba may crossover pa or capacitor at resistor lang puwede na? Or yung size ng internal box ang magdidikta dito?
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