sound isolation?!? need help
 

who makes best sound isolators?
solid or soft compound?
where to buy?international shipping avaible?
any idea about price?

will use them for engine walls ( in the boat)

thnx for any input

Talk to an engine builder who has a dyno room. My buddies shop has the foam "bumpy" panels insulating his dyno room and it works great. If nobody comes up with a source for you, Ill give him a call.

Call the TIARA boat comp. They use sound insulation in their boats

I have found that sometimes it is better to go to the source that works in acoustical barriers (or whatever I need) than to rely on what a boat maker found and is using. Other times it seems that boaters did a lot of trial and error to come up with what works. In seats for example it blows me away that people are not using space age foam in their seats. Car racers are and they don't take any pounding compared to Offshore. I think sound isolation is the same. These guys know all about sound isolation. Try the link below.

Link to Accoustical company

Get me a picture if what you are trying to do and I may be able to help you out.

Jon

are you trying to reduce high or low frequency?
or vibration?
are you trying to reduce noise for the pass or spectators

Sound Insulation for Boats
 

Timucin,
If you are looking for a real good sound insulation barrier, there is a place in Marblehead Ma. called Sounddown. Their Phone number is 781-598-4248 They make large boat mufflers and special insulation for boats.

The boat insulation has fiberglass on one surface with a thin layer of Lead in the Middle with another Layer of fiberglass on the outside with an aluminum face that has small fibers running through is as support.

You can cut the stuff with a sharp razor knife and pair of heavy duty shears.

Good luck with your project.
Brian

thnx all for your help.

BigBT: will call them on monday

Apache77:trying to reduce sound .will be seating infront of twin bigblock engine and there is only one fiber wall between us.I will isolate both sides of this wall to reduce the engines sound.

Audiofn:will take pic on monday and can post it on tuesday.this is a straight wall between engine room and cockpit

Tom: xtra thnx for the link.I think these are the compounds I am looking for.

thnx

Timucin your Builder used Airex Good choice there, But Why 10 MM ? Firewall Bulkhead 25 MM I would Think. Also in front of the Cockpit is there a Deflector system ?

Steve
no deflector yet, but planning to add .

I have a small vibration problem, there is this little boom sound everyonce in a while do you think that stuff would help me too.

apache77

:eek: :eek: :eek: :eek:

more photos pls

i will post more tomorrow

Yes PLEASE post more. Rag's

Try this it is liquid you buy it by the gal and roll it on. CASCADEAUIDO.COM Bend Or. 541-389-6821

Tim

Sounddown has technical papers available that do an excellent job of describing the different types of acoustical barriers and acoustical attenuating materials available. For your application you may want a combination of the two.

On your bulkhead, you definitely want a "barrier" which will be a foam base containing a dead soft suspended barrier material with significant mass. The lead sheet works best, with the suspended vinyl sheet being a close second. For the sides of your engine compartment you may wish for an acoustical attenuating material. This material does nothing to "stop" sound energy, it simply traps a lot of it and keeps it from echoing around. Soundcote makes a butyl covered foam that works well for this application (and it is lightweight).

You may also wish to add automotive headliner material to your cockpit cover as it will quiet the cockpit significantly.

I've reduced the sound level at cruise at the helm of my diesel cruiser by 6 dB. That's half, twice. And it wasn't exactly loud to start with, just louder than I wanted. Before doing this, i never heard the exhaust noise. Now all I can hear is a cool little remnant of turbo shriek coming out the transom corner air intakes and a pleasantly muffled exhaust noise. At docking speeds can hear the turbos "idling" instead of mechanical clatter.

I can even go INTO the engine compartment with them running without thinking I'll be deaf before I can crawl out. Before, all of the clatter echoed around retaining its energy, whereas now it is trapped and absorbed on every large surface. I was very pleased with the results.

:eek: :eek: :eek: :eek: HOW MANY WATTS IS THAT:confused: :confused: LOOKS LIKE ENOUGH BATTERIES TO POWER KEY WEST:D :D :p

Timucin -

check out www.acoustiblok.com
they make a really cool product that may help you, if it's not too heavy.
all the best,
Hans