Some speaker driver measurements... - Page 101

454Casull · 12th August 2020, 03:46 PM

Quote:

Originally Posted by HiFiCompass

The measurements of SB Acoustics SB12CACS25-4 woofer:

SB Acoustics SB12CACS25-4 | HiFiCompass

Hmm... I wouldn't use this driver above 2kHz (and that with a 4th order LP), given the shelf in on-axis and the dropping off-axis. Doesn't seem to be a very good performer in the bass, so the SS 10F/4424 (8424) overall looks to be much better as the mid in a 3-way, or in a 2-way the full-copper-sleeve SB drivers are superior as well.

Paul Ebert · 12th August 2020, 04:38 PM

I agree. A disappointment. I'm in the market for a mid that is as good as the PTT6.5. The PTT4.0 fits the bill except that I'd like higher sensitivity. This is not it (nor, IMHO, is the SS 10F). Rumor has it that Purifi will release a mid at some point. That would make me really happy.

TNT · 05:13 PM

And Faital 3fe22 to make it complete? ;-)

//

HiFiCompass · 12th August 2020, 05:11 PM

SB12CACS and 10F4424G are absolutely differently intended speakers. One is a woofer and another is a fullrange. So, the comparison doesn't have a sense.
The cone materials are different, so the sounding is very different too. Apples and oranges...

Zvu · 12th August 2020, 06:05 PM

I'd definitely use it. Crossed over sharply at 2.2kHz with Seas DXT and at 200Hz with SB23NBAC ported or RSS210 closed. Passive for upper and active for lower crossover point, of course.

5th element · 12th August 2020, 09:08 PM

Although the 12CACS performance isn't bad the motor clearly isn't in the same league as that of the 15BNAC.

I'm glad that SB actually added a shorting ring to the CAC Vs SBs other 12 series drivers but am still at a complete loss as to why they don't go with the copper sleeve of the 15 and 17.

454Casull · 12th August 2020, 10:20 PM

Quote:

Originally Posted by 5th element

Although the 12CACS performance isn't bad the motor clearly isn't in the same league as that of the 15BNAC.

I'm glad that SB actually added a shorting ring to the CAC Vs SBs other 12 series drivers but am still at a complete loss as to why they don't go with the copper sleeve of the 15 and 17.

Yeah, you'd think the "xAC" series should all have them... oh well. Missed opportunity.

tktran303 · 13th August 2020, 05:28 AM

Quote:

Originally Posted by HiFiCompass

The cone materials are different, so the sounding is very different too.

Have you compared the SB 15/17 N(B)AC, CAC, CRC, MFC, NRX2?

I've always been curious about they sound
I have a SB15NBAC and MW13PNW.
I'd like to EQ them to within 0.1dB from in their useable frequency ranges (50Hz to ~2KHz) and compare them via listening.
No tweeter

ginetto61 · 13th August 2020, 05:34 AM

Quote:

Originally Posted by HiFiCompass

... The cone materials are different, so the sounding is very different too. Apples and oranges...

Hi, may i ask if you prefer a specific cone material sound ?
Personally i think that aluminum has a big potential for really great sound
thanks a lot

HiFiCompass · 13th August 2020, 06:11 AM

Quote:

Originally Posted by tktran303

Have you compared the SB 15/17 N(B)AC, CAC, CRC, MFC, NRX2?

I've always been curious about they sound

I have a SB15NBAC and MW13PNW.

I'd like to EQ them to within 0.1dB from in their useable frequency ranges (50Hz to ~2KHz) and compare them via listening.

No tweeter

Yes, one day I compared CRC, CAC, MFC and NRX.
I would place them in this order by my personal taste:

1. CRC and NRX
2. MFC
3. CAC

12th August 2020, 05:09 PM	#1003
TNT diyAudio Member Join Date: Apr 2003 Location: Sweden	And Faital 3fe22 to make it complete? ;-) // __________________ More distortion to the people! Timing . . . . is paramount. Last edited by TNT; 12th August 2020 at 05:13 PM.

12th August 2020, 06:05 PM	#1005
Zvu diyAudio Member Join Date: Jan 2009 Location: Belgrade	I'd definitely use it. Crossed over sharply at 2.2kHz with Seas DXT and at 200Hz with SB23NBAC ported or RSS210 closed. Passive for upper and active for lower crossover point, of course. __________________ Tesla; George Carlin

12th August 2020, 09:08 PM	#1006
5th element diyAudio Member Join Date: Oct 2002 Location: England	Although the 12CACS performance isn't bad the motor clearly isn't in the same league as that of the 15BNAC. I'm glad that SB actually added a shorting ring to the CAC Vs SBs other 12 series drivers but am still at a complete loss as to why they don't go with the copper sleeve of the 15 and 17. __________________ What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz! Now with website! www.5een.co.uk under construction.

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12th August 2020, 04:38 PM	#1002
Paul Ebert diyAudio Member Join Date: Mar 2003 Location: Saline, Michigan	I agree. A disappointment. I'm in the market for a mid that is as good as the PTT6.5. The PTT4.0 fits the bill except that I'd like higher sensitivity. This is not it (nor, IMHO, is the SS 10F). Rumor has it that Purifi will release a mid at some point. That would make me really happy.

12th August 2020, 05:11 PM	#1004
HiFiCompass diyAudio Member Join Date: Jan 2018	SB12CACS and 10F4424G are absolutely differently intended speakers. One is a woofer and another is a fullrange. So, the comparison doesn't have a sense. The cone materials are different, so the sounding is very different too. Apples and oranges...