woofer identification

Looks like a B&C 21SW150 to me.

No 21ipal.. the ipal's magnet isn't painted black.

And the cooling/ventilation gap on the ipal is different.

Actually both drivers are visually near identical from that angle...only the 21ipal has 12 vent holes, the 21sw150 has 8.

Pictured driver has 10

Nothing in the b&c current or archived range matches it. Could be special order or could be a fake. If unmarked that suggests the latter. These are VERY expensive drivers if legit, so if it's too cheap for comfort, be careful.

Edited by Hemisphere - 06 November 2017 at 7:48am

Phase 1: Post on Speakerplans
Phase 2: ?????
Phase 3: Profit!

Can you share it?

Phase 1: Post on Speakerplans
Phase 2: ?????
Phase 3: Profit!

Datasheets are often issued before production, sometimes things change as actual production begins or changes during the run. I wouldn't go 100% on pictures printed on datasheets.

I have B&C make a lot of samples and OEM types and seen quite a few alterations on magnets, baskets, cones .. that you find in no regular production part.
I have 21SW152 in my cabs with 10 holes in this undeep milled ring groove and also some with an 8 hole magnet structure without the groove. So nothing to go on really.

Going by the basket, it seems to match 21SW150. Going by the magnet, it could also be 21SW152.
If it was DIY the speaker would be a regular production part with proper labels.
Probably OEM... out of what are they ? Is the seller willing to provide that info ?
Fake is possible, but the market for these is relatively small, so not very likely.

On a side note : Is it really unmarked, because in the picture we can't see the side of the magnet, were the sticker could be.

Edited by Peter Jan - 06 November 2017 at 9:37am

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
sgarfa Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 10 December 2013 Status: Offline Points: 101	Post Options Post Reply Quote sgarfa Report Post Thanks(0) Quote Reply Topic: woofer identification Posted: 04 November 2017 at 11:11am
	Hi, I'm negotiating for unmarked subwoofers, the seller sent me photos of the cones, but you do noti dont understand that neo 21 " are...

smitske96 Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 16 February 2016 Location: The Netherlands Status: Offline Points: 1092	Post Options Post Reply Quote smitske96 Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 1:50pm
	Looks like a B&C 21SW150 to me.

Isitone Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 23 October 2017 Location: Bern Status: Offline Points: 5	Post Options Post Reply Quote Isitone Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 10:02pm
	B&C, that's right, but the 21IPAL... Martin-Audio Cabinet? btw... my first Post on this Forum, hello everybody Edited by Isitone - 05 November 2017 at 10:04pm

smitske96 Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 16 February 2016 Location: The Netherlands Status: Offline Points: 1092	Post Options Post Reply Quote smitske96 Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 10:52pm
	No 21ipal.. the ipal's magnet isn't painted black. And the cooling/ventilation gap on the ipal is different.

Hemisphere Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 21 April 2008 Status: Offline Points: 2272	Post Options Post Reply Quote Hemisphere Report Post Thanks(0) Quote Reply Posted: 06 November 2017 at 7:35am
	Looks line for line match for the 21sw150 datasheet diagram. Just the magnet finish looks less smooth than datasheet photo.
	Phase 1: Post on Speakerplans Phase 2: ????? Phase 3: Profit!

Hemisphere Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 21 April 2008 Status: Offline Points: 2272	Post Options Post Reply Quote Hemisphere Report Post Thanks(0) Quote Reply Posted: 06 November 2017 at 7:40am
	Actually both drivers are visually near identical from that angle...only the 21ipal has 12 vent holes, the 21sw150 has 8. Pictured driver has 10 Nothing in the b&c current or archived range matches it. Could be special order or could be a fake. If unmarked that suggests the latter. These are VERY expensive drivers if legit, so if it's too cheap for comfort, be careful. Edited by Hemisphere - 06 November 2017 at 7:48am
	Phase 1: Post on Speakerplans Phase 2: ????? Phase 3: Profit!

smitske96 Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 16 February 2016 Location: The Netherlands Status: Offline Points: 1092	Post Options Post Reply Quote smitske96 Report Post Thanks(0) Quote Reply Posted: 06 November 2017 at 7:52am
	@Hemisphere I found a picture of the 21sw150 with 10 vent holes ;)

Hemisphere Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 21 April 2008 Status: Offline Points: 2272	Post Options Post Reply Quote Hemisphere Report Post Thanks(0) Quote Reply Posted: 06 November 2017 at 8:38am
	Can you share it?
	Phase 1: Post on Speakerplans Phase 2: ????? Phase 3: Profit!

cravings Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7441	Post Options Post Reply Quote cravings Report Post Thanks(0) Quote Reply Posted: 06 November 2017 at 8:53am
	first result on google images here.. from partsexpress

Peter Jan Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 16 December 2008 Location: Belgium Status: Offline Points: 1019	Post Options Post Reply Quote Peter Jan Report Post Thanks(0) Quote Reply Posted: 06 November 2017 at 9:33am
	Datasheets are often issued before production, sometimes things change as actual production begins or changes during the run. I wouldn't go 100% on pictures printed on datasheets. I have B&C make a lot of samples and OEM types and seen quite a few alterations on magnets, baskets, cones .. that you find in no regular production part. I have 21SW152 in my cabs with 10 holes in this undeep milled ring groove and also some with an 8 hole magnet structure without the groove. So nothing to go on really. Going by the basket, it seems to match 21SW150. Going by the magnet, it could also be 21SW152. If it was DIY the speaker would be a regular production part with proper labels. Probably OEM... out of what are they ? Is the seller willing to provide that info ? Fake is possible, but the market for these is relatively small, so not very likely. On a side note : Is it really unmarked, because in the picture we can't see the side of the magnet, were the sticker could be. Edited by Peter Jan - 06 November 2017 at 9:37am

sgarfa Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 10 December 2013 Status: Offline Points: 101	Post Options Post Reply Quote sgarfa Report Post Thanks(0) Quote Reply Posted: 07 November 2017 at 10:51am
	thanks to all, the seller has now sent me the photos of the sticker ... it is a 21sw150 8ohm proel oem.. Edited by sgarfa - 07 November 2017 at 12:38pm