Hi everyone,
For those who is interested, I've done some comparison between the new SB17NRX2C35-4 driver and the old SB17NRXC35-4 driver from SB Acoustics.
Details can be found here: SB17NRX2C35-4 vs SB17NRXC35-4
Regards
/Goran
For those who is interested, I've done some comparison between the new SB17NRX2C35-4 driver and the old SB17NRXC35-4 driver from SB Acoustics.
Details can be found here: SB17NRX2C35-4 vs SB17NRXC35-4
Regards
/Goran
Thank you very much.
Do you by any chance post FRD files for the NRX2C35-4 ?
" electrical third-order cross-over with an acoustical fourth-order Linkwitz-Riley cross-over topology"
I know what a third-order cross over is, but what do you mean by acoustical fourth-orde r Linkwitz-Riley topology?
Do you by any chance post FRD files for the NRX2C35-4 ?
" electrical third-order cross-over with an acoustical fourth-order Linkwitz-Riley cross-over topology"
I know what a third-order cross over is, but what do you mean by acoustical fourth-orde r Linkwitz-Riley topology?
It's interesting comparing this with the aluminum cone version.
While the test setup is not identical. It looks like the paper version, is smoother, but has worse cone break up that occurs earlier 6kHz vs 10kHZ.
While the test setup is not identical. It looks like the paper version, is smoother, but has worse cone break up that occurs earlier 6kHz vs 10kHZ.
The newer version is 2db less efficient than older version according to specs on sb site. While I dont see much difference in your tests. Wonder why sb decided to lower sensitivity in the specs.
Either to get greater bass extension or to get the same bass extension but in a smaller cabinet.
The raising of the cone edge/surround resonance to just below 2kHz is significant though. You can easily cross over below this, whereas before you could not.
A bigger dustcap will also push more air through the pole vent and possibly increase power handling.
Last edited:
Probably because the old specs were a bit exaggerated or the old version has changed over time, but the spec sheet wasn't updated!
They use the same voice-coil and magnet etc. The only visible change is the larger dust-cap.
Sba says that the new vented voice coil former will decrease some air flow resonance in the motor structure, is that something you have noted?
No, can't say I have, but the new NRX version is an improvement in my opinion with its smoother frequency response. The cone break-up is worse though and might need some special attention depending on the cross-over design.
- Status
- Not open for further replies.