... as the 32W/4878T01 from the table.
Also too expensive for my liking, therefore I use the SB Acoustics which is quite close.
Linear THD scale ... 🤐
That looks pretty high for 90dBSpl, SB34NRXL is in the 0,2% area at that level. But no idea if that measurement is valid.
That looks pretty high for 90dBSpl, SB34NRXL is in the 0,2% area at that level. But no idea if that measurement is valid.
The THD results on dibirama is always strange. Anyway, look the THD of the SB34NRXL below 50Hz, the 12RS430 seems much better in that region, so probably have a more linear motor for large excursions than the SB.
I only found the SB34NRX75-6, not the XL75-8 version? Do you have a link?
But all of these don't correlate with my measurements - here 2 12" in a complete speaker at 96dBSPL which would correlate to 1 at 90dBSpl. Linear THD scale for easier comparison but way wider spreaded. The 12" play up to about 550Hz, don't look at the rest.
And this is with some EQing the low frequencies so it worsens <50Hz.
Is there any writing about the measurement situation? then I can do a few quick measurements similar next week.
But all of these don't correlate with my measurements - here 2 12" in a complete speaker at 96dBSPL which would correlate to 1 at 90dBSpl. Linear THD scale for easier comparison but way wider spreaded. The 12" play up to about 550Hz, don't look at the rest.
And this is with some EQing the low frequencies so it worsens <50Hz.
Is there any writing about the measurement situation? then I can do a few quick measurements similar next week.
Indeed, on dibirama, there is only the NRX75-6 and not the NRXL75-8. My bad, sorry!
Here is a NRXL75-8 measurement, looks better in the low-end than the NRX75-6, although not completely comparable because the measurement conditions are different (dibirama vs hificompass).
https://hificompass.com/en/speakers/measurements/sbacoustics/sb-acoustics-sb34nrxl75-8
HiFiCompass measurements are very good and I often get very similar results.
(They only had some strange MD60N results, I belive these where very early units. And measurements are not correct >40kHz, dont know why they show up to 50kHz.)
(They only had some strange MD60N results, I belive these where very early units. And measurements are not correct >40kHz, dont know why they show up to 50kHz.)
My order of 4 RS430's from TLHP not arrived yet. Checked today and site says that 3 are in stock waiting on the last one. Supposed to arrive to their warehouse between 10th and 17th, so guessing they will have more in than just my 1.
I am replacing dual 12" drivers in large floorstanders. They will be replacing dual HPM100 drivers. Good old drivers, but these modern ones have the higher Xmax, higher power handling, similar FS, higher sensitivity, and lower distortion I am assuming. Every now and then I hit the end of driver stroke with these and these drivers are the only non-modern units in these speakers. I hope to hear a noticable improvement.
I wish they offered a 4 ohm version to get more out of the amps, since at higher frequencies like 500 hz they will need a good deal of voltage. (And chips like the TPA3255 are capping out aaround 50V)
You can buy the enclosures if you wish, at "reasonable" prices, quality is ?
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