EFTA02626777.pdf
dataset_11 pdf 172.0 KB • Feb 3, 2026 • 4 pages
From: Eric Roth <
Sent: Tuesday, August 28, 2018 5:48 PM
To: Jeffrey E.; Jay Massar
Subject: RE: G550 sn 5173 SUBWOOFER PLACEMENT
There is already a subwoofer in the aft section of the divan and there is enough volume of air within the total cavity.
These subs are designed for Gulfstream to require minimal air movement as many of the subs are located under the seat
base with approx. less than 2 cubic feet of volume.
Best Regards,
Eric
ERIC H. ROTH I PRESIDENT
C <maiIto: > I www.intljet.com
<http://www.intljet.com/> <http://twitter.comMI/intljet> <http://www.facebook.com/intljet>
2221Smithtown Avenue, Long Island MacArthur Airport, Ronkonkoma, New York 11779
From: jeffrey E. [mailto:jeevacation@gmail.comj
Sent: Tuesday, August 28, 2018 1:44 PM
To: Eric Roth <->; Jay Massar <
Subject: Re: G550 sn 5173 SUBWOOFER PLACEMENT
EFTA_R1_01840865
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it appears to project under the bed. you need air movement
On Tue, Aug 28, 2018 at 1:37 PM, Eric Roth < <mailto: » wrote:
Jeffrey,
We were in the aircraft this morning looking for "space" opportunities for the sub woofer. I was hoping that we
had space underneath the L/H #2 seat, but this is already occupied.
My suggestion- you have a subwoofer as part of this system design and it needs to go back for optimum
performance.
We only see two opportunities and they are both in the fwd arm rest of the L/H divan:
1. Fwd side (we would need to create a speaker grill to allow acoustic penetration)
2. Aft side (see attached engineering drawing) where it is "visually concealed".
Since low octave frequencies are non —directional ( it is not nice to roll your eyes at me ), I advise installing as
drawing.
Please provide direction so that we can move forward.
Best Regards,
Eric
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ERIC H. ROTH I PRESIDENT
IC -<mailto: :-> I www.intljet.com
<http://www.intljet.com/> <http://twitter.com/#!/intljet> <http://www.facebook.com/intljet>
2221Smithtown Avenue, Long Island
chttps://maps.google.comfiq=2221+Smithtown+Avenue,+Long+Island&entry=gmail&source=g> MacArthur Airport,
Ronkonkoma, New York 11779
From: Maurice Blibaum
Sent: Tuesday, August 28, 2018 1:21PM
To: Eric Roth < <mailto: >>
Subject: G550 sn 5173 JEFFERY SUBWOOFER PLACEMENT
I don't have a divan frame as in Jeffery's AC. This should give an idea though of what's going on.
MAURICE BLIBAUM I STRUCTURAL DESIGNER
<http://www.intljet.comh
IF <mailto > I www.intljet.com
<http://www.intljet.com/> <http://www.facebook.com/intljet> <http://www.twitter.com/intljet>
2221Smithtown Avenue, Long Island
<https://maps.google.com/?q=2221+Smithtown+Avenue,+Long+Island&entry=gmail&source=g> MacArthur Airport,
Ronkonkoma, New York 11779
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