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BCM8

173.63.109.4
Posted on March 16, 2016 at 15:20:00
tsingle999
Audiophile

Posts: 303
Location: NY - Long Island
Joined: January 15, 2007



I picked up a pair of these chokes. It looks like a nickel core surrounded by steel though. Would that be right?

 

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     RE: BCM8 - mqracing 13:14:18 03/17/16 (2)
       RE: BCM8 - tsingle999 15:25:08 03/17/16 (1)
         RE: BCM8 - mqracing 15:37:14 03/18/16 (0)
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     RE: BCM8 - mqracing 13:14:18 03/17/16 (2)
       RE: BCM8 - tsingle999 15:25:08 03/17/16 (1)
         RE: BCM8 - mqracing 15:37:14 03/18/16 (0)
RE: BCM8, posted on March 17, 2016 at 13:14:18
mqracing
Manufacturer

Posts: 4323
Joined: June 29, 2000
 No. None of our chokes are built on nickel.



Builder of MagneQuest & Peerless transformers since 1989

 

RE: BCM8, posted on March 17, 2016 at 15:25:08
tsingle999
Audiophile

Posts: 303
Location: NY - Long Island
Joined: January 15, 2007
 What would account for the lamination color differences on both chokes? Different steel batches? Just curious. Thanks Mike!

 

RE: BCM8, posted on March 18, 2016 at 15:37:14
mqracing
Manufacturer

Posts: 4323
Joined: June 29, 2000
 It's really difficult for me to tell too, too much from the photo. The unit does look like it's been through the proverbial wringer. It's one of the drawbacks to buying used parts.

I do not mix lamination grades (except for our deliberate pinstriped designs) and in the greatest majority of cases each pair of transformers were built as a pair. Meaning that the laminations for the pair came off of the same string and that the two coils will have very tight dcr matching.

After stacking and being put in channel frames the chokes are then varnished with a clear high gloss varnish. The photo seems to show significant degradation of the clear coat varnish. With some areas seemingly stripped of the varnish.

If your buying used you need or should have an agreement with the seller that you can return the units if your not happy with the condition.

And especially with chokes which are not priced too high I would suggest buying new. You'll know in advance the condition which they will arrive in and you'll get the all of the current benefits made over the years in terms of performance.

MSL





Builder of MagneQuest & Peerless transformers since 1989

 

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