[Folsom]

I have been thinking about using FR125's... Two of them. They are priced fairly and seem to be a nicer driver.

Box selection, um IB, side Horn Loading, foward firing ported box? I am not sure.... I want some decent defined bass, and I know ports can actually do this, I experience it now with my cheaper speakers.

I also had the Visaton B200 suggested to me, which cost double the amount so it is a little more expensive than I would like to go with.

What other fun suggestions do you guys have? I am not familiar enough with any Fostex to know what ones can get at least down to 60hz like the FR125's seem to do in any application, or that sound good, need X type box etc... I however have seen some priced around the FR125's range.

Any ways if you guys got any suggestions I would certainly be more than willing to read about and take into consideration.

I thought floor standers would be nice but I can also make some stubbie speaker stands if need be... I think I am going to use Cardas one twist posts (I like the function, and easy, and especially the material). Had no plans for a tweeter or crossover.

The only way I would think about using a crossover is if I threw in my Dynaudio 9 inch drivers with some full range FR125's or some thing.... However I would have to check the condition of the Dynaudio's and they may be rather sub-par, they where originally boxed for a car (they where not cheap though at all, a lot more than what I am going to spend on speakers now). The other issue is Ohms with throwing in bass drivers. Oh well.

[Jason1]

How about a floor standing line of four FR125s, ported? Sensitivity would be mid 90s, and the bass fairly impressive.

Yes, there will be comb filtering issues, though I doubt the sound will be seriously degraded over a single FR125. A 4.5" driver naturally beams, and won't have a ruler flat response (to 20khz) while producing 60hz tones.

Of course, this would cost double.

[Folsom]

How about a floor standing line of four FR125s, ported? Sensitivity would be mid 90s, and the bass fairly impressive.

Yes, there will be comb filtering issues, though I doubt the sound will be seriously degraded over a single FR125. A 4.5" driver naturally beams, and won't have a ruler flat response (to 20khz) while producing 60hz tones.

Of course, this would cost double.

Actually that would be three times as much. It does sound fun though... I could just go with the Visaton B200's instead if that was the case, where I had more to invest.

[Jason1]

How about a floor standing line of four FR125s, ported? Sensitivity would be mid 90s, and the bass fairly impressive.

Yes, there will be comb filtering issues, though I doubt the sound will be seriously degraded over a single FR125. A 4.5" driver naturally beams, and won't have a ruler flat response (to 20khz) while producing 60hz tones.

Of course, this would cost double.

Actually that would be three times as much. It does sound fun though... I could just go with the Visaton B200's instead if that was the case, where I had more to invest.

Ah, for some reason I thought you were originally planning on using 2 FR125s per side. My mistake.

[mcgsxr]

I have both the FR125's, and the b200 Visatons.

For a smaller room, and for bass below 80Hz, I would go with the FR's for sure.

In a larger space (necessary for the open baffles, the best way to use the b200 in my experience) and with less desire for strong bass, but a strong desire for staggering mids and highs, I would take the b200.

On a budget?  Go with the FR in a ported box, 0.25 feet, tuned to 55Hz.

Great little driver, will surprise you, and can be affordable...

If you are willing to spend a little more, and your amp can handle 4 ohms, then it would be worth thinking about a bipole, with 1 FR and 1 WR per side - the FR pointing forward, the WR rear facing...

Have fun!

[kfr01]

The FR125S speakers are fantastic through the midrange; I can't emphasise this enough, the midrange is truely magical.  

However, given the music I've seen you list (RATM, rock, etc.) on other threads, I don't think you'd be happy with them ported.  

When pushed, just like any other single full-range driver, they start to lose a little composure.  

I've tried them sealed and ported.  They sound MUCH better sealed.  

See my full review of the ported version here:

http://www.audiocircle.com/index.php?topic=21993&highlight=fr125s

The bipole suggested in the previous post would be what I would try, if budget would allow.  If not, then a sealed design.

[Folsom]

I found this thread over at DIY audio.

http://www.diyaudio.com/forums/showthread.php?s=&threadid=75789&perpage=10&pagenumber=1

What do you think? -3db at 45hz not bad huh? The PR is definatly closer to a sealed.

When I plotted a sealed in WinISD it barely went below 100hz :/

The other thing I was thinking about was this thing instead of a PR for a similiar to sealed box,

http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=296-546




Different drivers.... I was looking at Fostex website with all of the crazy exciting Horn recommended enclosurers... They are complicated as it gets no... but they have them for $30-400 drivers. The thing is while people discuss the boxes and build them like crazy no one ever talks about how any of them sound, so I have no idea if I would like any of them!

[kfr01]

I found this thread over at DIY audio.

http://www.diyaudio.com/forums/showthread.php?s=&threadid=75789&perpage=10&pagenumber=1

What do you think? -3db at 45hz not bad huh? The PR is definatly closer to a sealed.

When I plotted a sealed in WinISD it barely went below 100hz :/

The other thing I was thinking about was this thing instead of a PR for a similiar to sealed box,

http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=296-546

That'd be pretty interesting.  I mean, the fact that you can consider so many different applications for the FR125S makes it an ideal driver to play with.

Order some, build some prototype boxes, and see which application you prefer.

If you don't like any, the used market for Adire/CSS drivers is pretty strong.  I'm sure the resale would be quick.

[Watson]

You're running Tangband fullranges, right?

One thing you might want to try before moving to new drivers is mounting the Tangbands in a simple open baffle (i.e. as dipoles).  The Tangbands can be run as dipoles as long as you cross them high enough to your sub, and people on both the Madisound forum and DIYaudio have reported very good results using them like this.

[Folsom]

I have decided on a no subwoofer route. I like the detailed sound way to much to sacrafice any thing for SPL at this point. I know I thought about using a subwoofer a lot and it was the plan... I just do not think I would enjoy one now.

[mcgsxr]

If you do go with the FR's, and the drone, or passive radiator, and do not like it... ping me, I will be interested in them...

I like the look of that design, but have too much on my plate to take them on right now.

Good luck, the FR can satisfy in so many configs - OB, ported, sealed, aperiodic, PR... transmission line!

What a driver!

[ryno]

Hi DOS
Thanks for the links. I like the PR idea.
I have a WR125, in a ported box it was to boomy in my room, 10'x12'
Sealed in a parts express .375 ft3 box, they're much better, but a little light on the low end. The PR might be perfect for me.
To bad I didn't see this last night, I just placed an order at parts express. Their PR is pretty cheap.
Do the aperiodic vents extent the low end, or just let you use a smaller box?
Keep us posted if you try it.
Ryan