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Old 10th November 2005, 07:06 AM   #11
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I think the FE167 is the best balance between bass and high response.
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Old 10th November 2005, 08:27 AM   #12
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If you can live with the somewhat lighter bass, the FE167E would be my choice. As a bonus, when you have more room, you can stuff them into either Martin King's Project 2 ML TQWT, or Bob Brines FT1600MK2 MLTL. This driver gives the potential to have a pair of speakers at some point in the future which will mug anything commercial up to around 1500UK, or higher. And no, I'm not joking, they're that good.

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Old 10th November 2005, 04:08 PM   #13
jeremym is offline jeremym  Canada
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I'll toss in my $.02. I run my FE167s with the SI amp, and they pair very nicely. The SI amp seems to bring out a lot of mid and high frequency detail from the relatively laid back sounding 167-it's a very satisfying combo. Can't imagine getting too much more bang for your buck.
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Old 11th November 2005, 04:17 PM   #14
renfrow is offline renfrow  United States
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Also the CSS-FR125S is another full range driver you might look into:


Enclosure plans can be found at:

planet_10 HiFi

Or, you might want to try some two way kits that are out there, these are cheap enough that you could try them, and sell them if they really don't work well with the T-Amp:


Dayton BR-1S

The Kit41 does not include enclosure, but is designed to fit the Parts Express 7L enclosure. The Dayton BR-1S includes the enclosure.

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Old 11th November 2005, 09:46 PM   #15
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Thanks again for the helpful replies!

I've had considered going with the Tang Bands because they are so inexpensive and I could put them in a smaller enclosure...but in the end I ended up ordering the fostex 167E from Madisound.

Thanks for everyone's input and wish me luck in my enclosure construction
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Old 14th November 2005, 05:30 PM   #16
regal is offline regal  United States
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you will never go near 50hz with the sonic T-amp, it rolls off under 100hz because of a filter built into it.

I paired 2 fostex 127E in the standard BR with a sub and the sound was very good but not very loud.
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Old 15th November 2005, 01:00 AM   #17
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If you feel comfortable with a bit of fiddly electronics work, you can replace the input capacitors that function as a low pass filter and completely remove bass roll off. All you need are two 2.2 or 3.3uf caps (film, not electrolytic) and some fine gauge wire (30awg worked for me). It only takes a couple minutes to jumper in the caps. You'll want to check the Class D amp forum for diagrams or images depicting the capacitors you want to replace. It's a simple mod and well worth it.

Also, the 167's he used are about 3db more efficient than the 127's.
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Old 16th November 2005, 05:47 PM   #18
Kensai is offline Kensai  United States
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Kenwood KFC-6949S

Yeah, I know its a car speak, but its good stuff and readily available (Best Buy has them for $45-$55/pr. depending on their mood the day you walk in). They are true 1 driver fullrangers, 4ohm and I believe 92dB efficient.

I'm using a pair with a T-Amp in OB configuration as my PC speakers. I took the stretcher bars from a pair of 16"x20" canvases and mounted matching sheets of black foam core to them with 2" binder clips (I used OfficeMax brand ones and carefully made sure that the side with the engraved "OfficeMax" was on the front of each, so I can tell my friends that's where I got them). These are hinge mounted to lengths of cheap 1"x2" that are cut appropriately to wedge securely into available spaces on my computer desk, so they are fully adjustible from flat 180 degrees down to the point where they start bumping into gear on my desk (about 90 degress or so, though I usually keep them more in the 130-140 range for optimal sound in my seat). I have the drivers themselves mounted in the foam core as far up and out as possible so that they center right about ear level and are as far apart as I can get in my space (desk is in a corner).

I'm using 3" lengths of CAT5 (free) as cabling between the T-Amp and the speaks (bare on the amp side, using appropriate gold plated slip on connectors bought at AutoZone for $5 on the speaker side). I have a PreSonus HP4 headphone amp in my rig since I'm forced to use headphones for about 80% of my sound there, but the unit includes a high quality pot and a mute switch for monitor out, so I use this box as preamp for everything. My source is an Emu 0404, and I have to use the PatchMix driver to smooth out the response curve. With minimal reinforcement, I'm getting a solid 40hz on the low end before the resonse just drops off a cliff. The rest of the character is actually a bit on the bright side, so most of the rest of the EQ I use are slight lowerings at various points to eliminate some screeching. The drivers, though mellowed out nicely with breakin, so I've reviced my EQ curve a couple times since the initial time. In this sort of setup, I would have to rate them as being very good from about 40hz to around 16khz, though I have to admit that I think my hearing kinda cuts out around 16khz (though my cats freak when I turn up the shelf filter on 16khz while using the test tone generator).

So, that's probably $80 including the amp and all parts used, and I feel they are really good sounding, though I think the better than expected results are a synergy of surpsingly good for price source (Emu0404, $80), decent preamp (PreSonus HP4, $100, but I'm only using about $30-$50 of that as part of my speaker chain) and incredible value athat is the T-Amp (I gave lik $23 for it shipped), so as always, your mileage may vary.

I had been trying to do this with a pair of Pioneer 163P speaks (6.5" fullrangers) but they were very delicate compared to the Kenwoods with almost no excursion, so it was the best I could do to get a weak 50hz response out of them which did not sound very good. They were really great from about 65 to around 14-15k. I know they've got a 164 series out now, and have infact seen a boxed set of a pair of 164Ps, a pair of 164Ss (the 6"x9" equivalent) and some cheap CD deck for under $100 at Walmart just recently (I'm going to wait and see if any of these get clearanced for some experiment fodder, probably after the holidays).

Have fun.

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Old 18th November 2005, 03:02 PM   #19
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Default Fostex 127e...

Hi all... this is my first post!

>>>Have you thought about the FE127? I've been thinking about a pretty similar project and the WinISD models look pretty encouraging.

I am currently using the Fostex 127e in pipes with the SI amp and they work great together.

I think you made a good choice buying the 167e. It should also be great with the SI amp.

The new TB Bamboo's work great too.

Someone made a comment about the SI rolling off below 100Hz. Although the SI has amazing mids and treble it does need help in the bass.... using a powered sub takes care of this nicely.

Peace and enjoy your new speakers!

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