I'm surprised to read your experience, in my ears the SB has great treble (not only for a FR) and the last thing what I would say is "rough". But hey, ears and tastes are different
Thanks for your opinion!Yes. Give it just few hours of Yello or Prodigy just to strech the surround, You will notice a little bit more bass and everything will be smoother. Most of SB units are very compliant, this one is quite stiff.
I also would not say that treble is rough, it is just a little bit less silky and more simple in comparison with high quality dome tweeters.....But way better than what you get in many midfi commercial speakers ...
Right, 'timber' matching, something rarely discussed beyond matching stereo, etc., pairs, though 'part n' parcel' of 'pace, rhythm & timing' (PR&T) and the main reason why the pioneers limited HF flat BW to 12.5 kHz as there's nothing in acoustical music but top end 'air' in human 'breath', violins.
But, the lower the frequency, the wider its potential audible BW, so if you want to accurately reproduce all of a bombing war scene at live levels, need to think in terms of multi-way infrasonic mega compression horn systems or true 'wall of sound' speaker arrays.
I'm thinking of building a d'appolito version of the ddvp-20 with a tweeter in the middle.
Quite an undertaking though... 2m high
Quite an undertaking though... 2m high
No, right, by roughness I just mean peakiness of treble response compared to the dome. I don't really have much an issue with peakiness, not a source of fatigue in of itself and as mentioned there are no bad peaks.I'm surprised to read your experience, in my ears the SB has great treble (not only for a FR) and the last thing what I would say is "rough". But hey, ears and tastes are different
Treble is more distorted compared to smaller FR or dome tweeter, sort of garbled, but really it has a nice soft quality that is easy to listen to, partly why I prefer no tweeter in the end...
Also keep in mind these dont have much run in time on them
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Yeah, the distortion can be an issue, what I recently discovered in comparison with the Alpair 12P.
They definitely dont like to be pushed too hard, harshness and distortion ramp up abruptly.
On the plus side they do not lose dynamics at lower volumes, one of the best thing about them, never understood why so many speakers struggle with this.
On the plus side they do not lose dynamics at lower volumes, one of the best thing about them, never understood why so many speakers struggle with this.
Low Qms
Sb20frpc has glass fiber former and very high Qms=10
Usually it's about ~2 for aluminum formers
Qms of 10 is amazing for 8 inch driver....i wonder what would happen if they did high Cms / low Rms surround like they do with middle and Satori series....Fs would go significantly down, but motor is probably not ready for that. FR for sure would not be so even to 15 kHz...
Anyway, this driver is very succesfull set of compromises...
Anyway, this driver is very succesfull set of compromises...
Gentelmen a question can I use this driver for Home Theatre left centre right & surrounds in 30 litre sealed box. I listen to movies loud and have a 2 subs that cover till 100Hz
Are there using this SB driver in HT pros cons or something else I should look at . Room size is 15ft wide 10ft high ceeling and 28ft depth
regards
anand
Are there using this SB driver in HT pros cons or something else I should look at . Room size is 15ft wide 10ft high ceeling and 28ft depth
regards
anand
It would be an excellent choice.
Having the same driver for all channels should provide an amazing uniform sound field.
And 100hz sealed should be absolutely no problem for this driver.
Having the same driver for all channels should provide an amazing uniform sound field.
And 100hz sealed should be absolutely no problem for this driver.
Thank you for the reply , so is it sensible to connect it crossoverless , cause I have no experience in making crossover and I cannot find any builds anywhere where they give details of crossover.
Interesting point to use this driver in a cinema. The off axis response might be a consideration depending on application.
Here's a thought, Has anyone modeled it in a karlson speaker?
Here's a thought, Has anyone modeled it in a karlson speaker?
Re 'loud', it depends on which reference used, i.e. THX cinema reference for all but the LFE is 105 dB @ the Lp, so how far away is the listening area's central point with the understanding that in theory has to double the SPL (+6 dB) every doubling of distance.
At this level the driver (sealed) is already (X) maxed out at 100 Hz/m.........
I mean loud like 98db cause when i listen to my music in car I can measure using app on iphone it shows me 98
You could always change the x-over to 120hz or 150hz if you want to play it extra safe
No clue what it is displaying Vs what its measuring, i.e. peak or mean/average, though IME 98 dB/peak, while somewhat too loud for typical TV content, it's well below THX cinema reference, whereas its 'mean' is quite loud to most folks in an HT/mobile audio app, it's still below THX reference to the point where historically there's been few consumer products that meet them.
Regardless, the SB can only do a calc'd ~100 dB/m/2pi 'peak' (~80 dB avg.) sealed, so already out of dynamic headroom for any higher peak/avg. + loss over distance.
Note too that it's limited to 40 W, but in theory needs both a ~200 Hz XO/400 W to meet the 98 dB/m/2pi 'mean' (~118 dB peak), so a potential double 'whammy' to thwart meeting your SPL goal.
