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Old 16th February 2008, 11:06 AM   #1
Bluto is offline Bluto  United States
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Default CSS FR125's - Dissapointed

I'd been following these from the onset and bought 4 of them a month ago.

Finally got around to giving them initial test tonight. Simply wired them and powered up.

I'm real disappointed. These take a whole bunch of power to get any volume out of. I put an easy 30 watts to them. In my mind they sound no better than TB's 4"er that sell for 1/3 the cost that I'd purchased to see what a decent 4" could do and the TB's easily play near to twice as loud.

Will volume increase dramatically within an enclosure? Can't see why.

After all I'd read I expected the Cat's Pajamas.

Your experience appreciated.

Bluto

Side note ..... I'd asked awhile back if anyone was familiar with the Oakton brand (now defunct) and not much known by members. I bought a pair anyhow (NOS). These things are dynamite 8" FR's !! If you run into them , buy them!
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Old 16th February 2008, 12:33 PM   #2
rabbitz is offline rabbitz  Australia
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Wrong way to evaluate these drivers. I used to sell loudspeaker drivers and used to test the drivers before they shipped and I can tell you none sounded good just hooked up. A baffle and an enclosure makes a HUGE difference..... even a cardboard box with some stuffing.

Get yourself a good designed enclosure and try again. These are very good fullrange drivers and I'm not a fullrange freak. A bit low on the SPL and power handling but very good sound.

I noticed you have 4 and if going bipolar then the SPL will rise as well as the power handling. Besides, watts are cheap these days.

Do not pass GO until you have tried them in an enclosure.
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Old 16th February 2008, 01:27 PM   #3
bigwill is offline bigwill  United Kingdom
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Seconding this, the world's finest driver probably sounds dreadful simply hooked up sitting there. The dipole rolloff would be in the 100s of hertz range and the speaker would have a ridiculously low apparent efficiency
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Old 16th February 2008, 03:21 PM   #4
GM is online now GM  United States
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Yes, these have abysmal efficiency, it's the price you pay for a small driver that can go low. Anyway, in a sim the FR125S is a drop in replacement with an adapter ring for a RS 40-1354 MLTL I did years ago for a buddy that a bunch of fairly serious local DIYers were pretty impressed with, so thanks to a generous benefactor I'm planning to see if life imitates 'art' (sim) in the next week or so.........

GM
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Old 16th February 2008, 07:20 PM   #5
Bluto is offline Bluto  United States
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Thanks Guys -

Rabbitz - Sure, I know it's a poor test but initially the way I listen to any driver just to check tonal quality and what it'll handle before it breaks up. I get at least a general idea ( I hope) of where I can go with it based upon how it compares with other drivers I have on hand. Plans were and remain undecided but a bipolar similiar to BD's as well as a 2 driver Calhoun horn were amongst considerations. I'll at least whip together a 4' TL to see if that helps, plenty of OSB and cardboard around.

BigWill - As above, simply have never run into a driver to date that tested so poorly with this simple test.

GM - I went mostly on testimony and not numbers to make buy decision. Add that you have to believe anything originating from Reimer and Company simply must be good. Build quality is thus far finest driver I've ever personally owned. Easy to look at as well, a pretty driver. Simply hard to believe at this point driver will come alive in most suggested enclosures. All I'm seeing now is possible Office speakers with low power amp because as soon as I'd hit it with any juice it broke up. Biggest concern now is that I was fairly well settled in on one of a few designs and now I'm afraid to put both work and expense into any of those I had in mind. I've bought over 2 dozen different drivers in the last year just to see what they'd sound like and each did well in some application. I sincerely believed this one would outshine all I'd purchased and plans had this as 1st intended keeper.

Gotta believe you Guys and all else said by others prior to purchase.
I'll play with it and see what happens.

Thanks -

Bluto
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Old 16th February 2008, 07:34 PM   #6
GM is online now GM  United States
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You're welcome!

Hmm, I don't recall having much to say about it beyond its poor efficiency and overall wide BW smoothness. For sure it's not a very dynamic driver, at least based on its published specs, so is best used in an apartment, small room or as nearfield monitors.

Anyway, all I'm hoping for performance wise is that they give a ~Jordan JX92S type of wide BW smoothness with enough extra clarity/imaging WRT the tweaked 40-1354s in my buddy's apartment to justify their much higher pricing and if we're happy with the results I'll post the design if anyone's interested.

GM
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Old 16th February 2008, 09:35 PM   #7
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For those who like small drivers, these fit the bill. I do think they are an excellent little driver. Heavy on the little part. I was a little disappointed in the beginning too but I had to smack myself and realize it's a 4.5" driver. Wake up Cal, a 4.5" driver! OK, back to reality. IMHO opinion, that size of a driver has no business sounding that good. It only took about 10 hours for the driver to loosen up and offer some warmth to the low end.

The Calhoun's even impressed planet10.
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Old 16th February 2008, 09:43 PM   #8
OzMikeH is offline OzMikeH  Australia
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Behavior of the cone with it out of the box will be very different to in a box. it might bring some breakup modes in early because the excursion for a given input is greater than normal. no backpressure, (for want of a better term) Yep, even on an open baffle, the edges of the cone will be experienceing different forces.

Kind of like testing an amp into a 50 ohm load.
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Old 16th February 2008, 09:52 PM   #9
sfreak is offline sfreak  Australia
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Like Cal was saying, they do take 10-20 hours to loosen up and start to show there full potenital. I have them currently hooked up to my amp for my PC speakers. 3x3 room. And they play very loud. In 7L bass reflex cabinets. When they do start distorting and exceed xmax they are way passed comfortable listening levels anyways. Have at least 2000 hours on them now. Never missed a beat.
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Old 16th February 2008, 10:04 PM   #10
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Default CSS 125

I have the WR + Dayton neo tweet crossed high (8k) 2nd order

1) In a 25' x 17' (12' ceiling) room set on stands they did performed well but bass was lost (not the most efficient as said here)

2) In a den/office (9' x 10') set high above TV stand they perform admirably and they seem to go very deep (almost below 60Hz) as If a subwoofer was not needed

3) Right now I used one of them only as center channel to complement my ProAC studio I (ScanSpeak 8542). They are crossed high (I beliveve ~80hz if memory serves me right ) using the Panasonic AV digital receiver. They reproduce very clear voices and are very dynamic as a center channel

My kids always enjoyed them and asked me why I took one away...
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