Anybody use spectrum?

[ShaneSauce 2]

My tar based sound deadening fell off my panels a while back..

Anybody use the spray/brush on spectrum?

Is it worth it?

[Impious 1,476]

www.sounddeadenershowdown.com

Clean the surface well. Get some of the buytl CLD tiles from the above link. Live happily ever after.

CLD to my understanding is more effective than liquid deadener at vibration control. I have a few gallons of spectrum in my vehicle but can't really tell you how effective the Spectrum itself is as there's some mat deadener under it. If I had it to do over again, I'd have skipped the Spectrum as I really only bought it because I got it for cheap 2nd hand and it took forever to apply by brush.

[///M5 2,833]

Exactly what Impious said. Don't bother and I would also HIGHLY recommend taking a peak at the CLD tiles from SDS.

[eggyhustles 33]

I did

damn waste of money

I spoke to Ant from SS, told him i wanted to get rid of some road noise and he recommended the spray on stuff for my wheel wells, and hood..

didn't eliminate any road noise..

[///M5 2,833]

I did

damn waste of money

I spoke to Ant from SS, told him i wanted to get rid of some road noise and he recommended the spray on stuff for my wheel wells, and hood..

didn't eliminate any road noise..

Typical Ant, not interested in helping just in selling product. Recommending sludge for decreasing road noise is asinine.

[Anthony Collova 2]

Spectrum, is an amazing vibration damper. a viscoelastic vibration damper that will reduce strucure borne noise just as effectivly as a quality CLD mat as long as it is applied at similar thicknesses.

As far as using it in wheel wells, it is a great way to reduce structure borne noise closest to the source..

Under the hood it is good for reducing the structure borne noise caused by the engine.

Like any sound deeadening project however, vibration damping is only part of the equasion. The other part is the reduction of airborne sound waves. For this, the use of a noise barrier is ideal.

I am curious about eggyhustles reulsts.

Eggy, how much product did you use?

Did you apply it to the sheet metal surrounding the wheel wells or the plastic?

Though Spectrum is not the only product that should be used for noise reduction, it is a very powerful tool that will certain aid in noise reduction.

ANT

[///M5 2,833]

Spectrum, is an amazing vibration damper. a viscoelastic vibration damper that will reduce strucure borne noise just as effectivly as a quality CLD mat as long as it is applied at similar thicknesses.

Actually it, won't. I don't understand why you think it would. Completely different mechanism.

Though Spectrum is not the only product that should be used for noise reduction, it is a very powerful tool that will certain aid in noise reduction.

Boo, seriously? You don't post for months and then come with this? It most definitely does not ABSORB noise which you seem to be implying and even as a blocker it isn't effective. It should be used for defeating structural resonance and changing damping, but a CLD is better for that. Its sole advantage is in the way that it is applied, but considering you don't need to cover that much of a panel even that is of dubious benefit.

[Anthony Collova 2]

Spectrum, is an amazing vibration damper. a viscoelastic vibration damper that will reduce strucure borne noise just as effectivly as a quality CLD mat as long as it is applied at similar thicknesses.

Actually it, won't. I don't understand why you think it would. Completely different mechanism.

Though Spectrum is not the only product that should be used for noise reduction, it is a very powerful tool that will certain aid in noise reduction.

Boo, seriously? You don't post for months and then come with this? It most definitely does not ABSORB noise which you seem to be implying and even as a blocker it isn't effective. It should be used for defeating structural resonance and changing damping, but a CLD is better for that. Its sole advantage is in the way that it is applied, but considering you don't need to cover that much of a panel even that is of dubious benefit.

I never said anything is absorbed. Those are your words, not mine. Reduced, and absorbed might yield similar audible results in some cases, product to product, but we are talking about vibration reduction through conversion of energy.

Spectrum is a viscoelastic damper which converts vibrations in to heat. Just like a a constraint layer damper does. Same principle applies. Since you have a degree in this field, I would expect you to know that the function of the foil is replaced a viscosity is increased passed the point of sheer force..

For example, if we take a CLD mat, like Damplifier Pro, and we remove the foil it will have nearly the same vibration damping power. Now, if we drop the temperature of the butyl to -40 f. then hardness/viscosity increases and the vibration damping results increase back up to a similar point compared to when the foil was applied. The viscoelastic coatings (around room temperature) can be compared to the frozen butyl adhesive without the foil, since the elastomeric value and the mooney hardness measurements are decently close. Thought the products may be different in composition and nature, the results they provide are the same reduction in vibrations through transfer of vibrational energy in to heat.

Keep in mind to that the formulation for vinyl barriers is not all that different from acrylic coatings. Resins, plasticizers, mineral filler and 10 other chemicals and additives make each one different, but in the end it is mostly vinyl or acrylic resin, Calcium carbonate or barium sulfate and a few other things. If I increased the amount of plasticizer in Spectrum, and changed out the talc, mica and CC for more barytes, I could make my own non vinyl, acrylic mass loaded barrier. It might not be as flexile but it would be damned close. The weight and density could be easily matched as well. Use enough Spectrum in the wheel wells and you not only reduce the vibrations, but you also start working on airborne noise to a decent degree. Kind of like adding a MLV barrier without the decoupler. Not ideal, but it does work a lot better than loading up on CLD mats, which as you know is hardly worth the money that is required to get those results. The various types of mineral filler in Spectrum, aid a great deal in noise reduction.

I stand by what I said earlier. Spectrum is a very powerful tool in when total noise reduction is the goal. Like every tool, it should be used within the realm of its limitations.

ANT

[///M5 2,833]

Spectrum, is an amazing vibration damper. a viscoelastic vibration damper that will reduce strucure borne noise just as effectivly as a quality CLD mat as long as it is applied at similar thicknesses.

Actually it, won't. I don't understand why you think it would. Completely different mechanism.

Though Spectrum is not the only product that should be used for noise reduction, it is a very powerful tool that will certain aid in noise reduction.

Boo, seriously? You don't post for months and then come with this? It most definitely does not ABSORB noise which you seem to be implying and even as a blocker it isn't effective. It should be used for defeating structural resonance and changing damping, but a CLD is better for that. Its sole advantage is in the way that it is applied, but considering you don't need to cover that much of a panel even that is of dubious benefit.

I never said anything is absorbed. Those are your words, not mine. Reduced, and absorbed might yield similar audible results in some cases, product to product, but we are talking about vibration reduction through conversion of energy.

Spectrum is a viscoelastic damper which converts vibrations in to heat. Just like a a constraint layer damper does. Same principle applies. Since you have a degree in this field, I would expect you to know that the function of the foil is replaced a viscosity is increased passed the point of sheer force..

For example, if we take a CLD mat, like Damplifier Pro, and we remove the foil it will have nearly the same vibration damping power. Now, if we drop the temperature of the butyl to -40 f. then hardness/viscosity increases and the vibration damping results increase back up to a similar point compared to when the foil was applied. The viscoelastic coatings (around room temperature) can be compared to the frozen butyl adhesive without the foil, since the elastomeric value and the mooney hardness measurements are decently close. Thought the products may be different in composition and nature, the results they provide are the same reduction in vibrations through transfer of vibrational energy in to heat.

Keep in mind to that the formulation for vinyl barriers is not all that different from acrylic coatings. Resins, plasticizers, mineral filler and 10 other chemicals and additives make each one different, but in the end it is mostly vinyl or acrylic resin, Calcium carbonate or barium sulfate and a few other things. If I increased the amount of plasticizer in Spectrum, and changed out the talc, mica and CC for more barytes, I could make my own non vinyl, acrylic mass loaded barrier. It might not be as flexile but it would be damned close. The weight and density could be easily matched as well. Use enough Spectrum in the wheel wells and you not only reduce the vibrations, but you also start working on airborne noise to a decent degree. Kind of like adding a MLV barrier without the decoupler. Not ideal, but it does work a lot better than loading up on CLD mats, which as you know is hardly worth the money that is required to get those results. The various types of mineral filler in Spectrum, aid a great deal in noise reduction.

I stand by what I said earlier. Spectrum is a very powerful tool in when total noise reduction is the goal. Like every tool, it should be used within the realm of its limitations.

ANT

We weren't talking about resonant energy, but reducing road noise. Which you stated works which "implies" it is either a barrier or absorber which it is not an effective one. I realize it was my word, but by stating it will help in noise reduction that is exactly what you were saying. Stopping structure borne noise sources is not noise reduction, but an elimination of a source.

The second statement I bolded of yours begs for more detail. It is an interesting claim and I'd like to understand why and how you claim that mat without the constraining has the same effect as with it.

The last statement surely agrees with what I have said. Not a good absorber or barrier.

[///M5 2,833]

I am curious about eggyhustles reulsts.

Eggy, how much product did you use?

Did you apply it to the sheet metal surrounding the wheel wells or the plastic?

Me to. Putting it on the hood is even worse than your other recommendations. Perhaps you would like to enlighten us as to how that will reduce road noise, although at this point I don't expect you will respond.

[Anthony Collova 2]

I think you might not fully understand the abilities of viscoelastic coatings.

In addition to reducing stucture borne noise, they also have a very good mass loading effect. The only issue with them is that a decoupler is not in place, so the results are not as good as a true barrier. These coatings however, will reduce more aiborne noise than constraint layer dampers (when applied at similar thicknesses) . As I stated in my previous post, the difference between the vinyl formulation and the coatings formulation is just a few small changes in resin type (an a couple small addatives) the cured elastomeric coatings are very similar to the vinyl barriers. Barriers however do not exhibit the same viscoelastic nature as the coatings do.

Applying a coating on the hood is a great way to pick up extra surface area when you are trying to nail down the last few trouble spots.

As you drive, the engine noise travels through your fireswall, in to the cabin. This is where most of the engine noise that we hear comes from.

The rest comes either from under the car, or over the car.

Some sound waves go through the hood, which then enter through our windshield and ceiling, or under the car through the floor pan.

Anythin you put between the source of the noise, and your ears will, to some degree reduce noise. Some things are obviously better than others which is why using the most efficient product for the desired goals is always ideal. That being said, Spectrum is a very cabale vibration damper and to some degree (a larger degree than other products) will reduce airborne noise as well. There is simply no way around this

////M5

I konw you are going to chime in, and try to tear my logic apart. I know your motives. I am sure you want to help people on this forum. I have read your other threads, and though I do not always agree your negative tone and methods, I can appreciate your blunt honesty, and I do know that you know your shit. But please, if you are going to continue to follow me around this forum, and try to evoke a response by talking trash about me, even in threads that I am not posting in, I would encoureage you to stop. No only does it make me feel uncomfortable coming to this forum, ( a forum I am a vendor on) but I am sure you are driving away other members of this forum as well. Several have spoken to me about how you make them feel uncomfortable as well.

Don't expect me to jump in to any further debate with you, as I already konw how it will end up.

ANT

[Impious 1,476]

but I am sure you are driving away other members of this forum as well. Several have spoken to me about how you make them feel uncomfortable as well.

Pot calling kettle black.

[///M5 2,833]

I think you might not fully understand the abilities of viscoelastic coatings.

Other way around, you have proven over and over that you don't. Good that you are in marketing/sales and not development, although I question that as well as you could have a hell of a lot more successful company.

Applying a coating on the hood is a great way to pick up extra surface area when you are trying to nail down the last few trouble spots.

Extra surface area, lol. Great reason to apply a damper. You crack me up. I am sure you again won't back that up. (Probably better if you don't try )

But please, if you are going to continue to follow me around this forum, and try to evoke a response by talking trash about me, even in threads that I am not posting in, I would encoureage you to stop. No only does it make me feel uncomfortable coming to this forum, ( a forum I am a vendor on) but I am sure you are driving away other members of this forum as well. Several have spoken to me about how you make them feel uncomfortable as well.

You are actually following me around, look who posted here first. I treat you no differently than anyone that posts incorrect information. I call everyone out equally. I hope it makes you feel uncomfortable posting lies and incorrect information as I have no tolerance for that. As for distancing people on the forum, I am aware that the kneejerk reaction is to not like my approach but most people who have lashed out at me also send me PM's thanking me for actually helping them instead of just giving them a canned answer not based on their needs.

What really sucks is that you are a vendor on this forum, but don't support it. You claimed you'd show us through responding in threads that you care about the forum and again proved this isn't the case. You care about moving product and even do it unethically like recommending that people put Spectrum on their hoods. If you want to do that on DIYMA where you own the forum I can't and therefore don't say shit, but I won't let that misinformation fly here. The editing you request won't happen on this forum unlike others as that shady shit doesn't fly here. If you can't take the time to be up front, honest, and forthcoming then it is easy you don't have to post.

Don't expect me to jump in to any further debate with you, as I already konw how it will end up.

I wouldn't want to look stupid either. Feel free to not. I'll refrain from ripping your last post apart this time. Just get your facts right next time so we don't have to go through this again. It isn't fun for me either.

I konw you are going to chime in, and try to tear my logic apart. I know your motives.

I've never hid from my motives. I want this forum to be a great place of information for everyone with no BS. Your posts show that your motives are to sell your product even if it means to not give solid advice. Either you do this exclusively for your pocket or you truly don't understand what you sell. Not sure which is your "motive" but my response to either will be the same. I do know if your motives were truly to improve the board you'd welcome other vendors, so I guess we can assume what yours are as well.