Motorola Console Salvage

croat47 · 15th February 2009, 02:20 AM

Through a great community called "Freecycle", I came across an old Motorola Console Stereo. While I have some questions about the amp posted in the Tubes section, I've also got a few about the drivers.

It seems the cabinet was loaded with Jensen "Special Design" drivers in some series parallel fashion with the following and their labels:

T-High: 50K638562 / 220839 / P5-VAH / C1 6328
T-Low: 50K638577 / 220831 / P525-WA / C1 6327
Mid: 50K638576 / 220839 / P525-WA / C1 6326
15" Woofer: 50C632259-C / 220840 / P15R / C5835 3

There is an extension cabinet, loaded similarly, save the woofer is 10" and labeled:

Motorola Golden Voice / 50K642740 / 575826

Each 4-driver compliment is 8-ohm. The only crossover component is an orange cardboard-cased 5uF Motorola cap that acts as high pass to the two "tweeters". With a finger tap, you can tell that the two "tweeters" are sporting different resonances. Everything else is running full range.

Any help is sorting out what I've got here would be most appreciated. All the magnets, including the 15" driver's, are very small, so my guess would be Alnico. I will try to post picks within the next couple of days. But, if anyone might know what these are and if they are worth hanging on to, that would be fantastic. Any posts of "They're junk, just ship them to me" will be a dead give away!

Last bit: all the cabinets were "open" backed in the sense that a protective hardboard cover was over the backs, but was full of ~1.5" holes. So, I've very tempted to throw the mid and two tweets on a narrow open baffle with some monopole bass support. The small magnets and low mass should be good in OB, yes?

GM · 15th February 2009, 03:14 AM

Yes.

GM

planet10 · 15th February 2009, 03:37 AM

pictures?

dave

croat47 · 15th February 2009, 12:11 PM

Working on it...give me a day. You will see the backdrop of a major renovation in one of the images.

But, the "mids" and "tweeters" are different in that the mids have ribs and the tweeters are smooth. Both have round holes as the open space rather than what is now a typical basket. The largest magnet on the 15" is not much larger than a votive candle (was the first visual reference looking around the LR).

Two other interesting aspects are that the surround is paper and formed into the cone and that the mids/woofers have a seam in the cone from what I imagine to be the forming process.

Pictures to follow in a day or so...

croat47 · 3rd March 2009, 02:37 AM

Can not seem to post pictures. Are BMP's valid?

No...they are not. Figured it out...

croat47 · 3rd March 2009, 02:46 AM

Front of "Low" Tweet (left) and Mid

croat47 · 3rd March 2009, 02:48 AM

Back of "Low" Tweet (left) and Mid

croat47 · 3rd March 2009, 02:52 AM

Back of "High" Tweeter. The cone is glossier on the front than the "Low" Tweeter...

croat47 · 3rd March 2009, 02:54 AM

Side profile of 10". Magnet is relatively large compared to cone size after you see the 15"...

croat47 · 3rd March 2009, 02:55 AM

15" Top...ish...

The magnet is tiny, but not seen in this image.

15th February 2009, 02:20 AM	#1
croat47 diyAudio Member Join Date: May 2005 Location: Eastern Shore, Maryland	Motorola Console Salvage Through a great community called "Freecycle", I came across an old Motorola Console Stereo. While I have some questions about the amp posted in the Tubes section, I've also got a few about the drivers. It seems the cabinet was loaded with Jensen "Special Design" drivers in some series parallel fashion with the following and their labels: T-High: 50K638562 / 220839 / P5-VAH / C1 6328 T-Low: 50K638577 / 220831 / P525-WA / C1 6327 Mid: 50K638576 / 220839 / P525-WA / C1 6326 15" Woofer: 50C632259-C / 220840 / P15R / C5835 3 There is an extension cabinet, loaded similarly, save the woofer is 10" and labeled: Motorola Golden Voice / 50K642740 / 575826 Each 4-driver compliment is 8-ohm. The only crossover component is an orange cardboard-cased 5uF Motorola cap that acts as high pass to the two "tweeters". With a finger tap, you can tell that the two "tweeters" are sporting different resonances. Everything else is running full range. Any help is sorting out what I've got here would be most appreciated. All the magnets, including the 15" driver's, are very small, so my guess would be Alnico. I will try to post picks within the next couple of days. But, if anyone might know what these are and if they are worth hanging on to, that would be fantastic. Any posts of "They're junk, just ship them to me" will be a dead give away! Last bit: all the cabinets were "open" backed in the sense that a protective hardboard cover was over the backs, but was full of ~1.5" holes. So, I've very tempted to throw the mid and two tweets on a narrow open baffle with some monopole bass support. The small magnets and low mass should be good in OB, yes? __________________ Regards, Aaron

15th February 2009, 03:14 AM	#2
GM diyAudio Member Join Date: Jun 2003 Location: Chamblee, Ga.	Yes. GM __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

15th February 2009, 03:37 AM	#3
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	pictures? dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

15th February 2009, 12:11 PM	#4
croat47 diyAudio Member Join Date: May 2005 Location: Eastern Shore, Maryland	Working on it...give me a day. You will see the backdrop of a major renovation in one of the images. But, the "mids" and "tweeters" are different in that the mids have ribs and the tweeters are smooth. Both have round holes as the open space rather than what is now a typical basket. The largest magnet on the 15" is not much larger than a votive candle (was the first visual reference looking around the LR). Two other interesting aspects are that the surround is paper and formed into the cone and that the mids/woofers have a seam in the cone from what I imagine to be the forming process. Pictures to follow in a day or so... __________________ Regards, Aaron

3rd March 2009, 02:37 AM	#5
croat47 diyAudio Member Join Date: May 2005 Location: Eastern Shore, Maryland	Can not seem to post pictures. Are BMP's valid? No...they are not. Figured it out... __________________ Regards, Aaron


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