audio set-up for beginners [continued]

**jhnkvn** · July 4th, 2017 12:14 PM

Originally Posted by joms

Guys pa audition naman ng new focals. Dati kasi i find the tweeters ng focal medyo matalas and fatiguing. Some say na iba na daw ngayon. I plan to install a sound setup sa starex namin and i want to see kung ok na yung tweeters ng bagong focal ES165k / ES 165K2 / ES 165KX2. I plan to power them with Helix G5 (subs is JL 12w3v3) using a Helix DSP.2 (Head unit = Pioneer 8850)

Kung meron din sa inyo merong 10" in a sealed box, baka pwede din pa audition. I want to see kasi kung kaya na ng 10" sealed yung starex para mas maliit lang yung box.

Music pref ko is pop, jazz, 80s, disco and the like. Im not really into rock/trance/hard core music/etc

Salamat!

It was never "iba" but it's really more of proper tuning above all else.

The sound characteristics of Focal's old metal dome tweets are known to be "matalas" but that's because of people not taking advantage of the material properties. All materials have specific behaviors and while their ultimate purpose is to recreate beautiful sound, they also behave differently. Each has their own pro's and con's so to speak. For example, should the material (metal) enter its break-up zone, it will really sound harsh (again, due to the material characteristics of metal) versus a soft dome tweet as comparison which has a more pleasing "break-up" personality.

I have the Focal Kevlars. If you're around Banawe or plan to visit it, just hit me with a PM and I'll let you listen to it. Nobody in my book has ever complained about it being harsh and many say the opposite actually.

**joms** · July 6th, 2017 10:45 AM

Thanks to all those who replied and PMd me.

jhnkvn - ill PM you if I get to be in the area of banawe. I'm a bit far (paranaque) but ill try to make a way to go to Banawe one of these days. I'd love to hear your kevlars. By any chance are these the new kevlars or the old ones? Thanks

sientobente - are you by any chance a member of the yahoo group "SQ Manila"? If you are, will you attend the audition night at lower antipolo, Brickfire (8pm) this friday (July 7)? I'd also love to listen to your flax. If you aren't going, then are you free tomorrow evening? I can meet you anywhere in lower antipolo area. Kahit sandali lang =)

desmosedici - thanks for the message. I'd love to hear your system. Just tell me when you are free.

**desmosedici** · July 6th, 2017 05:49 PM

Originally Posted by jhnkvn

Noise dampening insulation basically comes down to two things: absorbing or blocking the sound, and reducing/eliminating the movement of parts which leads to vibration and rattling noises.

To tackle the latter..

You need to understand the three parts of sound deadeners..

1. mass to be dampened (sheet metal in a car)
2. constraining layer (butyl rubber)
3. reflection dampening layer (aluminum layer)

When the mass to be dampened (henceforth sheet metal) is vibrating, it will ring until the energy is either lost in heat, or radiated into the surrounding air as kinetic energy. Vibrations from the cars driving along the road, the air moving past the panels, from the engine just being turned on - all these can excite the atoms in the sheet metal and make it reverberate and we consider this movement as "noise". To negate it, we need to counter the ring with an equal but opposite force as best we can. Thus enters the sound deadening where the constraining layer (butyl) is set to bond with the reflecting dampening mass (aluminum) to the sheetmetal that will respond to a vibration with an opposite vibration -- canceling out the first vibration.

To do this, they use the first vibration impact to push the aluminum layer at a delay that coincides with its distance from the sheet metal. this first impact causes the aluminum to vibrate out of phase with the sheet metal, hopefully causing both of their vibrations to stop dead in their tracks - or close to it. This is why the butyl viscosity and its thickness are very important to get the aluminum layer to vibrate at the right phase-time to the sheet metal.

In reality tho, the vast majority of the dampening is less on the aluminum layer but more on the forces the butyl creates. This is why I don't mind generic OEM butyls with no aluminum layers on it.

But that's the vibration aspect and more geared towards car audio...

If we look at the former..

A piece of paper won't block off sound well. But a huge slab of concrete will. You basically need mass to absorb sounds.

Now, don't worry, there's actually a car running in the Philippines that has concrete poured inside it as a cost-effective way to reduce vibrations and noise. But that car competes in worldwide decibel competitions as any vibration (or out of phase sounds) reduces your score drastically. For one, it has enough decibels to kill a person inside

That's interesting. Thanks. I thought all along that sticking those mats was all about mass damping (adding mass to prevent the car panel from vibrating by changing its resonant frequency). Turns out that aluminum layer is there to cancel out the movement of the panels - parang principle ng noise cancellation?

**jhnkvn** · July 7th, 2017 02:42 PM

Originally Posted by joms

Thanks to all those who replied and PMd me.

jhnkvn - ill PM you if I get to be in the area of banawe. I'm a bit far (paranaque) but ill try to make a way to go to Banawe one of these days. I'd love to hear your kevlars. By any chance are these the new kevlars or the old ones? Thanks

sientobente - are you by any chance a member of the yahoo group "SQ Manila"? If you are, will you attend the audition night at lower antipolo, Brickfire (8pm) this friday (July 7)? I'd also love to listen to your flax. If you aren't going, then are you free tomorrow evening? I can meet you anywhere in lower antipolo area. Kahit sandali lang =)

desmosedici - thanks for the message. I'd love to hear your system. Just tell me when you are free.

Sure. These are one generation behind being the KRX3 set (2006?-2016) set. Don't worry, they roughly have the same specifications as the old K3P (2001-2005?) set except iba lang yun tweeter. The old K3P uses the older titanium domes while the newer ones has a Kevlar sandwich thrown in it.

If you're attending the SQ Manila, I might be there after dinner. It's been a while since the last Audition Nights was held.

**sientobente** · July 7th, 2017 04:37 PM

Originally Posted by joms

Thanks to all those who replied and PMd me.

jhnkvn - ill PM you if I get to be in the area of banawe. I'm a bit far (paranaque) but ill try to make a way to go to Banawe one of these days. I'd love to hear your kevlars. By any chance are these the new kevlars or the old ones? Thanks

sientobente - are you by any chance a member of the yahoo group "SQ Manila"? If you are, will you attend the audition night at lower antipolo, Brickfire (8pm) this friday (July 7)? I'd also love to listen to your flax. If you aren't going, then are you free tomorrow evening? I can meet you anywhere in lower antipolo area. Kahit sandali lang =)

desmosedici - thanks for the message. I'd love to hear your system. Just tell me when you are free.

Sorry, not yet a member. Sayang, Brickfire is literally across the street from our subdivision, kaso I am out of town right now. I am probably free next weekend though. Maganda, if we can schedule an audition dun sa place ng installer ko, SimpleSound, in Vermont Park, so you can also listen to more cars than just mine.

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**joms** · July 8th, 2017 07:28 AM

Originally Posted by sientobente

Sorry, not yet a member. Sayang, Brickfire is literally across the street from our subdivision, kaso I am out of town right now. I am probably free next weekend though. Maganda, if we can schedule an audition dun sa place ng installer ko, SimpleSound, in Vermont Park, so you can also listen to more cars than just mine.

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ah kayna jonz ka pala nagpa install. I was with him last night in SQ Manila audition night.

jhnkvn = sir did you go to Brickfire? umuwi na kasi ako ng maaga pero the only one i auditioned na naka focal kevlars was jonz' ride. Sayang hindi ko na audition yung sayo.

**phil15** · July 10th, 2017 01:21 PM

Filinvest ka lang pala. I work at Vermont and my installer is Jonz too. Hindi ako nakarating last Friday sa audition nights.Lets grab beer minsan sir *sientobente

Originally Posted by sientobente

Sorry, not yet a member. Sayang, Brickfire is literally across the street from our subdivision, kaso I am out of town right now. I am probably free next weekend though. Maganda, if we can schedule an audition dun sa place ng installer ko, SimpleSound, in Vermont Park, so you can also listen to more cars than just mine.

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**sientobente** · July 11th, 2017 03:52 AM

Originally Posted by phil15

Filinvest ka lang pala. I work at Vermont and my installer is Jonz too. Hindi ako nakarating last Friday sa audition nights.Lets grab beer minsan sir *sientobente

Sure thing bro! Might drop by Jonz this weekend.

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**red_one** · July 18th, 2017 08:58 AM

Upgraded the ASX head unit to 10" Android head unit. 10" Multi-touch screen, Quad-core CPU, 2GB RAM, 32GB Storage, WIFI, Bluetooth, GPS Navi, Steering wheel control, Rear Camera ready, DVR ready, OBD2 ready.

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**ssaloon** · July 18th, 2017 09:20 AM

Originally Posted by red_one

Upgraded the ASX head unit to 10" Android head unit. 10" Multi-touch screen, Quad-core CPU, 2GB RAM, 32GB Storage, WIFI, Bluetooth, GPS Navi, Steering wheel control, Rear Camera ready, DVR ready, OBD2 ready.

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How's the interface? Snappy and no lag when cycling through the menu?