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ArthurG View Drop Down
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    Posted: 24 March 2010 at 2:26pm
Originally posted by technofreak technofreak wrote:

Thanks. The biggest difference from the old version seems to be a few more dB sensitivity at midrange frequencies (I assume the currently published specs are old version's). Reference efficiency is 1,09% old vs. 1,63% new. Other than that they simulate very similarly in the 45...200 Hz range - essentially the same extension, SPL, group delay, cone excursion etc. In my application - no real difference between the two.
in terms of parameters, they are very similar, yes, but in terms of sound, the new one is much much better due to the highly improved mid range.
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technofreak View Drop Down
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Points: 74 		Post Options Post Options   Thanks (0) Thanks(0)   Quote technofreak Quote  Post ReplyReply Direct Link To This Post Posted: 24 March 2010 at 1:59pm
Thanks. The biggest difference from the old version seems to be a few more dB sensitivity at midrange frequencies (I assume the currently published specs are old version's). Reference efficiency is 1,09% old vs. 1,63% new. Other than that they simulate very similarly in the 45...200 Hz range - essentially the same extension, SPL, group delay, cone excursion etc. In my application - no real difference between the two.
It's techno and it's freak
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ArthurG View Drop Down
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Points: 552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ArthurG Quote  Post ReplyReply Direct Link To This Post Posted: 24 March 2010 at 12:04pm
As I don't remember clearly, I will take a picture tomorrow of my Sov 8-225 samples and I will post it here Smile

FYI, TS paraneters of the new Sov 8-225 are:
Re 6.5 ohm
Fe 68 Hz
Vas 21 liters
SD 214 cm2
mms 16.7 gr
BL 10.9
Qms 5
Qes 0.39
Qts 0.36
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Nitz V1505 View Drop Down
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Originally posted by ceharden ceharden wrote:

Use the one which sounds the best, simple as that!
+1, Id go with the fanes myself cos they appear to drop lower. The dip in the 1.5-3khz region is not a bad thing IMO cos I normally eq mids down at around that point. No speaker out there has a ruler flat response and for the money fanes aint bad. Just trust your ears mate.
LET THE BASS ROLL LIKE THUNDER
& THE TOPS LIKE LIGHTNING.....
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technofreak View Drop Down
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Points: 74 		Post Options Post Options   Thanks (0) Thanks(0)   Quote technofreak Quote  Post ReplyReply Direct Link To This Post Posted: 24 March 2010 at 11:47am

Does this new version has different dust cap than the old ones? Quoting myself: "I ordered 4 drivers, 3 of them look like on the official photos by Fane (photos in the datasheet, for example) - more traditional placed dust cap, made of impregnated cloth (like these hi-fi soft-dome tweeters, but one looks more like Eminence Beta 8 with solid paper dust cap glued directly to the voice coil."

I still haven't measured the different driver separately... Very likely this is the new version, and the others are the old ones. Doesn't bother me since I'm not going to use them for upper midrange, just for low-mid from 100 Hz to up to 400...500 Hz; and also as stand-alone bass for small events. They have nice bass, clean and defined, not massively low or loud, but not shabby either. Now all I need is a proper amp to drive them.

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ArthurG View Drop Down
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Points: 552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ArthurG Quote  Post ReplyReply Direct Link To This Post Posted: 24 March 2010 at 10:22am
Originally posted by technofreak technofreak wrote:

...And yet another different looking measurement here. 

this measurement is with a very old version. New ones, since Dec 2009, are like the curve I have posted. I did a small box last week for a OEM customer, Sov 8-225 + CD130, tuned at 70hz, with xover at 2.6kHz and I'm flat within 3dB from 200Hz to 18kHz. Very smooth and warm sounding speaker Smile
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technofreak View Drop Down
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Points: 74 		Post Options Post Options   Thanks (0) Thanks(0)   Quote technofreak Quote  Post ReplyReply Direct Link To This Post Posted: 24 March 2010 at 9:53am

...And yet another different looking measurement here. I re-measured today, after they have played some 20 hours. In-room measurements, 1/8 oct. smoothing, ~55 l vented box tuned to ~45 Hz, two speakers per cab in push-pull. Red line is taken from 2 cm of dust cap, green from approx. 1 m, blue line is from ~60 cm with the inverted driver covered with blanket to minimize it's possible influence.

(Just for a comparison, my current mid-tops with Eminence Alpha 6 and Celestion HF50:)
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mrchay View Drop Down
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useful info :-)

I have decided to use the p.audio sn-8mb as the drivers - I will keep the fanes for a new 12v rig I think. The plan will be to have 2 sov 8-225 per side, and no dedicated sub.

how to fill that midrange watford gap though? perhaps 2 inch comps but everyone seems to hate them running low :-(
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ArthurG View Drop Down
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Points: 552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ArthurG Quote  Post ReplyReply Direct Link To This Post Posted: 24 March 2010 at 9:03am
Originally posted by technofreak technofreak wrote:

Hi,

Just got my Sovereign 8-225s - not very good midranges, I'd say. Huge hole in the 1,2...3 kHz region. But sounds good up to 1 kHz.

huge hole in mid range ? 

strange, actual Sov 8-225 in production is like that:


and the sound is very very good. One of my fav 8" of the moment
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technofreak View Drop Down
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Points: 74 		Post Options Post Options   Thanks (0) Thanks(0)   Quote technofreak Quote  Post ReplyReply Direct Link To This Post Posted: 22 March 2010 at 4:11pm

Hi,

Just got my Sovereign 8-225s - not very good midranges, I'd say. Huge hole in the 1,2...3 kHz region. But sounds good up to 1 kHz.

Build is good, due to fairly thick cone they seem to be more like mid-bass/low-mid (exactly how I'm going to use them) than dedicated mid drivers. Eminence Beta 8 would be tried and tested 8" mid, in hi-fi applications also.

And... Thee seems to be 2 versions of Sovereign 8-225 - I ordered 4 drivers, 3 of them look like on the official photos by Fane - more traditional placed dust cap, made of impregnated cloth (like these hi-fi soft-dome tweeters, but one looks more like Eminence Beta 8 with solid paper dust cap glued directly to the voice coil. It also seems to have slightly thinner cone. No difference in markings or basket/magnet. As for now I haven't measured this strange animal, but I guess the graph will look like Eminence Beta too...
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mrchay View Drop Down
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Points: 516 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mrchay Quote  Post ReplyReply Direct Link To This Post Posted: 22 March 2010 at 11:57am

i think this is a bit of a pointless conversation I shouldnt have started really :-(
it seems like people have lost sight of having fun, its all big business, replays of debates about the same arrangements of ply round a driver, and loads of tire kicking about this or that box. 

darkmatter, cheers for thoughts. Jake, cheers for advice about passive xover. 
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JaKe View Drop Down
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As cilla says but if you have got time to spare then if nothing else you will learn something by having a go and get a better idea of what works and what doesn't.
A good start would be to build an oversize test box with but with the same baffle dimensions you intend to use for the final design. Tune the box by adjusting the internal volume and port length.
If using a passive xover then the low pass inductor will add resistance in series with the driver so be prepared to retune the cab at this point.
You should soon work out which driver you prefer the sound of.
Enjoy.
JaKe
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