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Multi-Way Conventional loudspeakers with crossovers

Sticker on magnet over vent
Sticker on magnet over vent
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Old 21st January 2018, 07:21 AM   #1
Mrcloc is offline Mrcloc  South Africa
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Default Sticker on magnet over vent

Hi. I can't seem to find information on this. My two extra visaton w170s' arrived today, and I was looking at them (as one does when getting new toys), and I noticed the sticker on the back covers the vent in the magnet. Should I leave it? Should I tear it off? Will it have an effect on the parameters?
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Old 21st January 2018, 07:26 AM   #2
Keruskerfuerst is offline Keruskerfuerst  Germany
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Can you post a picture?

Normally the vent on the back side of the magnet (vent of voice coil) should be left free.
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Old 21st January 2018, 07:31 AM   #3
Mrcloc is offline Mrcloc  South Africa
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Thanks, here's a picture.
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File Type: jpg WP_20180121_10_29_59_Pro (2).jpg (306.7 KB, 94 views)
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Old 21st January 2018, 07:34 AM   #4
Keruskerfuerst is offline Keruskerfuerst  Germany
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Is there a hole (for voice coil cooling) under the sticker?
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Old 21st January 2018, 07:43 AM   #5
Mrcloc is offline Mrcloc  South Africa
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There's a hole, but I don't know if it goes all the way through.

One does not simply remove the sticker. It's really on there, and won't go back on easily. So, if I remove it and there isn't a hole, no harm done (except that the sticker isn't nicely on), but if there is a hole, then surely I've affected Qms? But is this actually the right thing to do?
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Old 21st January 2018, 07:46 AM   #6
Mrcloc is offline Mrcloc  South Africa
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Ok, I did an image search, and it looks like it's just a divet. The w250s doesn't have a similar sticker.
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Old 21st January 2018, 08:18 AM   #7
Keruskerfuerst is offline Keruskerfuerst  Germany
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You can use a long, thin needle and stick through the sticker.
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Old 21st January 2018, 10:47 AM   #8
TBTL is offline TBTL  Germany
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Visaton WxxxS series indeed do not have a vented pole piece.
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