So I finally found a set of speakers that seemed like a good enough deal and
they came in last week. I'm wondering if anyone has any input/experience
installing speakers. They aren't flush mount which needs I'll need to be
cutting a few holes... some of my curiosity lies in wondering if there's any
certain saw blades one should use for cutting fiberglass.... I was going to
just drill a few holes to start a hand jig saw... maybe tape up the area
with duck tape to avoid scratching.. other than that I didn't really know if
there was anything one should take precaution with.

Also, though they weigh a couple pounds each, should I worry much about
providing some of support to the backing... like a brace to dissipate weight
on the fiberglass walls?

TIA

-j

"Jay" wrote in message ...
So I finally found a set of speakers that seemed like a good enough deal
and they came in last week. I'm wondering if anyone has any
input/experience installing speakers. They aren't flush mount which needs
I'll need to be cutting a few holes... some of my curiosity lies in
wondering if there's any certain saw blades one should use for cutting
fiberglass.... I was going to just drill a few holes to start a hand jig
saw... maybe tape up the area with duck tape to avoid scratching.. other
than that I didn't really know if there was anything one should take
precaution with.

Also, though they weigh a couple pounds each, should I worry much about
providing some of support to the backing... like a brace to dissipate
weight on the fiberglass walls?

TIA

-j


Always cover the face of the cut/drill area with duct tape...it reduces the
likelihood of the gelcoat chipping.

You say these are not flushmount speakers so I assume they are already
installed in boxes and the brackets for the boxes are what you will be
attaching to the boat.

I would consider some sort of backing strap or plate the help support the
brackets. Large washers are another consideration.

"JimH" wrote in message
...

"Jay" wrote in message ...
So I finally found a set of speakers that seemed like a good enough deal
and they came in last week. I'm wondering if anyone has any
input/experience installing speakers. They aren't flush mount which
needs I'll need to be cutting a few holes... some of my curiosity lies in
wondering if there's any certain saw blades one should use for cutting
fiberglass.... I was going to just drill a few holes to start a hand jig
saw... maybe tape up the area with duck tape to avoid scratching.. other
than that I didn't really know if there was anything one should take
precaution with.

Also, though they weigh a couple pounds each, should I worry much about
providing some of support to the backing... like a brace to dissipate
weight on the fiberglass walls?

TIA

-j


Always cover the face of the cut/drill area with duct tape...it reduces
the likelihood of the gelcoat chipping.

NEVER use duct tape for masking. When you remove it either the adhesive
will stay and is a bear to remove, or it will tear off any finish it was
applied
over. Use something like 3M blue tape.

You say these are not flushmount speakers so I assume they are already
installed in boxes and the brackets for the boxes are what you will be
attaching to the boat.

I would consider some sort of backing strap or plate the help support the
brackets. Large washers are another consideration.

"Doug Dotson" dougdotson@NOSPAMcablespeedNOSPAMcom wrote in message
...

"JimH" wrote in message
...

"Jay" wrote in message
...
So I finally found a set of speakers that seemed like a good enough deal
and they came in last week. I'm wondering if anyone has any
input/experience installing speakers. They aren't flush mount which
needs I'll need to be cutting a few holes... some of my curiosity lies
in wondering if there's any certain saw blades one should use for
cutting fiberglass.... I was going to just drill a few holes to start a
hand jig saw... maybe tape up the area with duck tape to avoid
scratching.. other than that I didn't really know if there was anything
one should take precaution with.

Also, though they weigh a couple pounds each, should I worry much about
providing some of support to the backing... like a brace to dissipate
weight on the fiberglass walls?

TIA

-j


Always cover the face of the cut/drill area with duct tape...it reduces
the likelihood of the gelcoat chipping.

NEVER use duct tape for masking.

You are correct. I should have said masking tape.

Jay wrote:
So I finally found a set of speakers that seemed like a good enough deal and
they came in last week. I'm wondering if anyone has any input/experience
installing speakers. They aren't flush mount which needs I'll need to be
cutting a few holes... some of my curiosity lies in wondering if there's any
certain saw blades one should use for cutting fiberglass.... I was going to
just drill a few holes to start a hand jig saw... maybe tape up the area
with duck tape to avoid scratching.. other than that I didn't really know if
there was anything one should take precaution with.

I've used a RotoZip for this - much easier than a Sabre Saw. If its
simple glass it goes through it very quickly. Mine were in the cockpit
seats which had a 1/2 ply backing, so I went though 3 or 4 bits for both
holes. Tape the area with masking tape, draw your circle, and have a
helper with a vacuum to keep the dust down.


Also, though they weigh a couple pounds each, should I worry much about
providing some of support to the backing... like a brace to dissipate weight
on the fiberglass walls?

You shouldn't need support, but you could glass in some marine ply
before or after you make your hole.

Before you cut into the boat, are the speakers magnetically
shielded so as not to interfere with your compass?

Jeff Morris wrote:
Jay wrote:

So I finally found a set of speakers that seemed like a good enough
deal and they came in last week. I'm wondering if anyone has any
input/experience installing speakers. They aren't flush mount which
needs I'll need to be cutting a few holes... some of my curiosity lies
in wondering if there's any certain saw blades one should use for
cutting fiberglass.... I was going to just drill a few holes to start
a hand jig saw... maybe tape up the area with duck tape to avoid
scratching.. other than that I didn't really know if there was
anything one should take precaution with.


I've used a RotoZip for this - much easier than a Sabre Saw. If its
simple glass it goes through it very quickly. Mine were in the cockpit
seats which had a 1/2 ply backing, so I went though 3 or 4 bits for both
holes. Tape the area with masking tape, draw your circle, and have a
helper with a vacuum to keep the dust down.


Also, though they weigh a couple pounds each, should I worry much
about providing some of support to the backing... like a brace to
dissipate weight on the fiberglass walls?


You shouldn't need support, but you could glass in some marine ply
before or after you make your hole.

They are, actually... though we're usually only on a landlocked river....

-j


"chuck" wrote in message
...
Before you cut into the boat, are the speakers magnetically shielded so as
not to interfere with your compass?

Jeff Morris wrote:
Jay wrote:

So I finally found a set of speakers that seemed like a good enough deal
and they came in last week. I'm wondering if anyone has any
input/experience installing speakers. They aren't flush mount which
needs I'll need to be cutting a few holes... some of my curiosity lies
in wondering if there's any certain saw blades one should use for
cutting fiberglass.... I was going to just drill a few holes to start a
hand jig saw... maybe tape up the area with duck tape to avoid
scratching.. other than that I didn't really know if there was anything
one should take precaution with.


I've used a RotoZip for this - much easier than a Sabre Saw. If its
simple glass it goes through it very quickly. Mine were in the cockpit
seats which had a 1/2 ply backing, so I went though 3 or 4 bits for both
holes. Tape the area with masking tape, draw your circle, and have a
helper with a vacuum to keep the dust down.


Also, though they weigh a couple pounds each, should I worry much about
providing some of support to the backing... like a brace to dissipate
weight on the fiberglass walls?


You shouldn't need support, but you could glass in some marine ply
before or after you make your hole.

Those speakers are not magnetically shielded. That is not a problem as long
as you keep them away from the compass...e.g. 5 feet or so.


"Jay" wrote in message
...
They are, actually... though we're usually only on a landlocked river....

-j


"chuck" wrote in message
...
Before you cut into the boat, are the speakers magnetically shielded so
as not to interfere with your compass?

Jeff Morris wrote:
Jay wrote:

Some folks recommend a minimum of 3 meters or ten feet
separation. Wouldn't hurt to conduct a test. Probably best
done with the boat out of the water so it can't move during
the test.

May not be a problem at all on a landlocked river, but other
readers might be more concerned about the effects of strong
onboard magnets on offshore navigation. Some modern speakers
have amazingly powerful magnets.







JimH wrote:
Those speakers are not magnetically shielded. That is not a problem as long
as you keep them away from the compass...e.g. 5 feet or so.


"Jay" wrote in message
...

They are, actually... though we're usually only on a landlocked river....

-j


"chuck" wrote in message
...

Before you cut into the boat, are the speakers magnetically shielded so
as not to interfere with your compass?

Jeff Morris wrote:

Jay wrote:

Might be a good idea to determine what's behind the bulkhead before
drilling and cutting. If you cut the hole accurately, you can use SS
wood screws in correctly sized holes to attach them.
JR
Jay wrote:

So I finally found a set of speakers that seemed like a good enough deal and
they came in last week. I'm wondering if anyone has any input/experience
installing speakers. They aren't flush mount which needs I'll need to be
cutting a few holes... some of my curiosity lies in wondering if there's any
certain saw blades one should use for cutting fiberglass.... I was going to
just drill a few holes to start a hand jig saw... maybe tape up the area
with duck tape to avoid scratching.. other than that I didn't really know if
there was anything one should take precaution with.

Also, though they weigh a couple pounds each, should I worry much about
providing some of support to the backing... like a brace to dissipate weight
on the fiberglass walls?

TIA

-j




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Home Page: http://www.seanet.com/~jasonrnorth