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PostPosted: 25 Feb 2009, 01:05 
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Joined: 23 Jan 2009, 02:10
Posts: 13
Location: Barnstead, New Hampshire United States
Hello,

I am looking into the possibility of diving waay in and trying my hand at building some small, bookshelf' type bass reflex speakers to be used with a small
tube amp (K-12 amp kit with some mods) or similar powered DIY tube amp. I have "0" experience with building speakers, but am mechanically handy, have a number of woodworking tools, and am an electrical engineer with 24+ years of various design experience, looking for some experienced opinions on whether this is a reasonable matchup for an 8 - 15W tube amp, a good/bad idea, or any pointers/advice that you are kindly enough to offer a noob with enough knowledge to get into serious trouble.

I would plan to use this in my office (actually an L-shaped room) that is approximately 5m x 5m, with carpeted floor.

Many thanks for any help you can offer!
Mike


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PostPosted: 25 Feb 2009, 13:36 
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Joined: 28 May 2008, 21:53
Posts: 4580
Location: Winnipeg, CANADA
Hi Mike,
The Fostex FE103E is good, but I like the Fostex FE127E better for only a little more money. You get a touch more sensitivity and bass.

Here are a couple FE127E ideas:

And here are a couple Fostex FE103E ideas:

And some photos:
Gary's Fostex FE103E Asymmetrical Vented Speakers
Image

Fostex FE127E Bookshelf Speakers
Image

Hope this give you some ideas. Will you be using a sub to fill in the low end?

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PostPosted: 25 Feb 2009, 20:33 
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Joined: 23 Jan 2009, 02:10
Posts: 13
Location: Barnstead, New Hampshire United States
Thank you, those look like good ideas - I will consider the 127 drivers also as they appear very nice from the specs.
At this point I don't plan to use a sub - I've got lots of corners available to play with as I may like and want to try to get a nice tight, even sound with these speakers.
I've got an old H-K SS amp and big Advent speakers for watching movies with ;-)

Maybe a future project - if this doesn't turn out a disaster - will be to work on a higher powered system with a sub. We'll also have to let the economic situation play into how much "mad-money" I can invest into this at this time.


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PostPosted: 25 Feb 2009, 23:23 
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Joined: 28 May 2008, 21:53
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Location: Winnipeg, CANADA
If you are not going to be using a sub, I would lean towards the FE127E for that little extra bit of bottom over the FE103E. Also, since you have corners, you could consider a BiB (Bigger is Better) enclosure.

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PostPosted: 06 Mar 2009, 12:26 
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Joined: 06 Jun 2008, 20:12
Posts: 972
Location: Houston, TX
I built some FE127E Fonken MKII speakers. Liked them very much with my small tube amp. I thought it was a good match. I have been lamenting the lack of bass but recently tried an equalizer and moved them around the room alot. Much improved bass with combo of equalization and use of corners.
They dont like complicated music but sound fantastic for jazz, folk, light rock. Have not tried any big band music. I am glad I build them and like I said they are a great match for tubes.
Ri

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