Author Topic: BES SM 280 panel speakers Bertagni  (Read 4183 times)

Offline non-prophet

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BES SM 280 panel speakers Bertagni
« on: December 02, 2015, 11:54:05 AM »
I have these speakers and they are in the way right now, In good working condition, but they do buzz on certain low frequencies.  I pulled the grilles and everything looks as it should.  Mind you, I was putting more power than I should and listening to music that these were not designed for.  Pots need some deoxit.  Overall, in excellent physical condition.  These sold for $1200 in 1984, definitely a cool looking speaker.  Manual included.  Forum price $150.

http://www.ebay.com/itm/272058974019?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
Duntech PCL-400 (Black Knight), KEF 105/3, Snell Type b
Aloia PST 11.1, Terra Song ss-1, Luxman c-1000, Melos MA333
Llano Phoenix CA-300, White Audio Labs A100, (2) Luxman M4000
McIntosh MA230

Offline MacGeek

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Re: BES SM 280 panel speakers Bertagni
« Reply #1 on: December 02, 2015, 06:30:33 PM »
I have encountered buzz and rattles and found it is sometimes a loose driver mounting screw or a wire inside, against a component or inside speaker wall.  A toothpick in a rattling screw hole often fixes the problem
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Offline Sir Thrift-a-Lot

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Re: BES SM 280 panel speakers Bertagni
« Reply #2 on: December 02, 2015, 09:49:31 PM »
I like to dip the toothpick in wood glue first.

Offline non-prophet

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Re: BES SM 280 panel speakers Bertagni
« Reply #3 on: December 02, 2015, 10:45:54 PM »
I personally think it was me and my music choices, electronica and hip hop, hooking them up to 275 watts also did not help.  they do not buzz at normal listening levels and it wasn't even the deepest bass, but a frequency around 45-50 hz that caused it at loud volumes, I think the manual states they go down to 35 hz.  The wire theory is a good one, I only checked the driver structure (Styrofoam drivers) for breaks or separation, played with them for a week looking for the problem with no luck.  Whatever, I will use these as target practice for my shotgun if I have to move them more than one more time.
Duntech PCL-400 (Black Knight), KEF 105/3, Snell Type b
Aloia PST 11.1, Terra Song ss-1, Luxman c-1000, Melos MA333
Llano Phoenix CA-300, White Audio Labs A100, (2) Luxman M4000
McIntosh MA230

Offline Sir Thrift-a-Lot

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Re: BES SM 280 panel speakers Bertagni
« Reply #4 on: December 02, 2015, 10:52:56 PM »
This was the first hit when I Googled.   Evidently the VC sometimes comes unglued from the styrofoam.

http://www.audiokarma.org/forums/index.php?threads/bes-sm-280-score.213068/

Offline non-prophet

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Re: BES SM 280 panel speakers Bertagni
« Reply #5 on: January 09, 2016, 02:44:20 PM »
$100!!!! make these go away
Duntech PCL-400 (Black Knight), KEF 105/3, Snell Type b
Aloia PST 11.1, Terra Song ss-1, Luxman c-1000, Melos MA333
Llano Phoenix CA-300, White Audio Labs A100, (2) Luxman M4000
McIntosh MA230

Offline non-prophet

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Re: BES SM 280 panel speakers Bertagni
« Reply #6 on: January 17, 2016, 10:44:43 PM »
Sold!
Duntech PCL-400 (Black Knight), KEF 105/3, Snell Type b
Aloia PST 11.1, Terra Song ss-1, Luxman c-1000, Melos MA333
Llano Phoenix CA-300, White Audio Labs A100, (2) Luxman M4000
McIntosh MA230