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First full range build - Fostex ff165wk
First full range build - Fostex ff165wk
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Old 1st May 2017, 05:05 PM   #1
sadat is offline sadat  United Kingdom
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Join Date: Mar 2017
Default First full range build - Fostex ff165wk

Hi All,

My first post here! Although I have been searching around the site quite a bit.

Planning to build speakers for my rented room in London~ 11ftx 12ft. I know there are tons of similar posts out there but I created a new one as I plan to post pictures and updates from start to end of the build.

Background:

I have never built a full range setup before so planning to give it a go. Unlike most of you here my knowledge and experience of audio is relatively non-existent. However electronics and DIY is my hobby! I have made DIY speakers before but they were built without much audio knowledge, experience or measurements. The picture shows the setup I have back home which was built purely for the sake of loud bass and music!

My setup is quite simple. I finished building a 2-channel LM3886 recently, capable of providing 30W into 8Ω. and thus now am planning to build the speakers for the amp. After reading several threads around here I have settled on the Fostex FF165WK. Also they fit my budget and and have an RMS power of 30W so matches my amp perfectly. These are available in ebay UK but would prefer other retailers if anyone knows about?

I tend to listen to music with more lows and tighter punch bass. But I have come to acknowledge that full range sound will be completely different so I have an open mind. While I truly respect the type of music most people play in these system, I will probably be listening to mostly metal, rock and some pop music from Youtube .

Plan:
For the enclosures (the main reason for the post), I was planning to go with the recommended designs from the fostex datasheet but I think they won't full fill my low end expectations and I don't intend to spend more on a sub. I am primarily looking at MLTLs such as the one designed by Bob Brines M12-F165. If i do go with this, I will indeed buy the plans before proceeding.

However I am also looking at something like this https://youtu.be/eqUbYFLLV4I.

I also don't know if I should go with the popular horn designs like the dallas II, or the recommended datasheet enclosure with the fe206en? The dallas would poses a problem to buld with all those angles but the one in the datasheet should be fine to cope with.

My tools are modest; jigsaw, power drill, hand saw, power sander,wood glue, some 12" clamps and rulers.

Any ideas are welcome.

Thanks
Sadat
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Old 1st May 2017, 05:58 PM   #2
chrisb is offline chrisb
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Join Date: Aug 2002
Location: victoria BC
A short list of observations / comments, in no particular order of significance:

- if you have the floorspace, a full length MLTL such as Bob's or Dave Dlugos' Compact Floorstander will definitely deliver deeper bass extension and impact than the Fostex BR box;

- whether using MDF or Baltic Birch plywood (I'd suggest the latter), you'll want access to something like a decent table or track saw to provide clean cuts for glue joints - do not rely on gap filling properties of Gorilla etc type expanding polyurethanes, or construction adhesives;

- I'd highly recommend chamfering a 45dg bevel on the rear side of driver hole. A router would come in handy for both that, and a more accurate though hole for the driver;

- FF165WK does not require a BLH as complex at the Dallas - it does work very well in the FrugalHorn FHXL, but that one requires more real estate than I think you can currently afford.

- depending on your hearing, you may not need a tweeter with the 165s - I certainly don't find them particularly lacking, but at over 65 the top end of my hearing is long a distant memory
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Old 1st May 2017, 06:10 PM   #3
zman01 is offline zman01  Bangladesh
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Join Date: Feb 2011
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First full range build - Fostex ff165wk
sadat,

Not to sound discouraging and no offence to the wide-band driver aficionados, in my experience metal music doesn't sound very good on FR speakers, but YMMV. And I've had no experience with the FF165WK driver.

Good luck with your build.
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Old 1st May 2017, 06:28 PM   #4
chrisb is offline chrisb
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Indeed, while 132 sq ft is not a huge room, you might well find that Zia is correct with his assessment re the suitability of a FR system to your music tastes, and perhaps listening levels.
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Old 1st May 2017, 08:24 PM   #5
giantstairs is offline giantstairs  Spain
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Just my experience, so take with a grain of salt, but I do not like the combo of the ff165wk with a chipamp (in my case an audiosector version). I have the drivers in large BIB cabs and still do not find the bass sufficient to balance out the mids. Don't like the highs much either.

In this price range I greatly prefer the Alpair 10.3, and there are plenty of cabs around that will work. There are even flatpacks in the U.K. of the above mentioned FHXL. You may even be able to hear a pair before laying out your pounds.

As mentioned above you may also want to look to standard multiway speakers for your choice of music.
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Old 2nd May 2017, 12:35 AM   #6
sadat is offline sadat  United Kingdom
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Thanks everyone for your input.

Believe me, I have given the multi-way systems a serious thought, was even was gonna go for the SEAS MIMIR, but then I don't really like the idea of a crossover. I'm not a big fan of them lets say. The way I see it, the amount of money I'm gonna spend on those inductors and caps can be better served on spending it on the driver!

Thus I opted for full range drivers. I am not too bothered about the room size for now as the room is rented so I might move to a bigger room or house in the future but won't be making speakers that often. But definitely not considering an overly large enclosure.


chris,

Thanks for most of your suggestions. Is this the compact floor-stander you were referring to: Frugal-phile | Box Library / Fostex. Also when I was referring to the BLH, i meant to use them for the FE206ens. Right now I am thinking of two routes; MLTL with ff165wk or recommended BLH with FE206en. But not sure which will be better for tighter low end bass. I am not too fussed about the high ends so I think I'll live without a tweeter.

zman,

Not at all, you're input is appreciated, thanks. I see you're from Dhaka. Me too.

giantstairs,

I understand. Well I can't afford tubes or expensive amps so my modest lm3886 will have to do. The Mark Audio drivers does look interesting it's also slightly cheaper than ff165 or fe206 in the UK. I'll look into it. Unfortunately I don't know many audiophile people who own such systems to enable me to have a listen before splashing out the .

Btw does anyone have any suggestions or links for buying ff165 apart from ebay?

Sadat,
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Old 2nd May 2017, 12:48 AM   #7
planet10 is online now planet10  Canada
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First full range build - Fostex ff165wk
Quote:
Originally Posted by sadat View Post
Is this the compact floor-stander you were referring to: Frugal-phile | Box Library / Fostex. Also when I was referring to the BLH, i meant to use them for the FE206ens. Right now I am thinking of two routes; MLTL with ff165wk or recommended BLH with FE206en.
The Compact Floorstander Fonken165 is part of the paid planset for FF165wk.

Click the image to open in full size.

The Fostex recommended enclosures are a mixed bag. For the FE206 the FE208 horn is better, but not up to Dallas II, Kirishima, or Vulcan. BTW FF165wk works well in Victor.

dave
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Old 2nd May 2017, 01:12 AM   #8
sadat is offline sadat  United Kingdom
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Join Date: Mar 2017
Hi Dave,

Thanks for you input. I've seen that picture before in one of the threads or maybe on a youtube video. The fonken165 looks nice! Do you mean the fe208 sigma is better that 206en? In that case it should be cause that 208 costs ~2.5 times the 206 here in the UK.

As for the Kirishima, Vulcan and Victor, those would be too large for my taste. The Dallas II with the 206en is an option (don't know how i'll cut all those angles) and am also considering the fonken165/or bob's MLTL with ff165.

Sadat,
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Old 2nd May 2017, 03:07 AM   #9
planet10 is online now planet10  Canada
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First full range build - Fostex ff165wk
Quote:
Originally Posted by sadat View Post
Do you mean the fe208 sigma is better that 206en?
No, i mean the 206 is better in the 208 horn than in the 206 horn.

dave
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Old 2nd May 2017, 09:22 AM   #10
giantstairs is offline giantstairs  Spain
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Quote:
Originally Posted by sadat View Post

giantstairs,

I understand. Well I can't afford tubes or expensive amps so my modest lm3886 will have to do. The Mark Audio drivers does look interesting it's also slightly cheaper than ff165 or fe206 in the UK. I'll look into it. Unfortunately I don't know many audiophile people who own such systems to enable me to have a listen before splashing out the .
Hi Sadat,
I understand and never suggested expensive amps. I imagine even a cheap tube amp will pair better with these drivers and, if you're into diy, a nice Pass F2 or F3 would sound great for not too much money.

What I did mention is that the 10.3 (I made these for a friend and had them for about a month) will sound very good with your chipamp.

As someone who has bought way too many drivers without being able to listen first I understand your predicament so offering my 2 cents.

You could get in touch with member "orangeart", the UK dealer for Mark Audio, he may be able to help you out with demoing, flatpack, etc. I have no affiliation other than a good experience buying drivers.

Here is the website:
Mark Audio drivers and flat pack speaker kits
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