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#1 |
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If there are 2 types of speakers characteristics: -Free Air (no need of enclosure just a baffle) -Enclosure specific (XX cubic feet of internal volume) So I asked my self?... is the internal volume of the spheres enough for the HL-70 to perform properly? I email Hertz and they told me it's a Free Air driver and for my application I need at least 1 Liter = 61.0237 in³ of internal volume. According to my math a 5" sphere is about 65 in³ so I should be OK, but "NO" I measured the spheres and real dimensions have a 4.5" diameter less the sides I cut short to match the a-pillars... I did a water test to find out the internal volume and it's a little under 1/2 liter.I guess I'm going to have to open a second hole into the A-pillars to vent the enclosure for proper driver performance. Also will use some Poly Fill. .
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. CLA 250, 4MATIC |
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#2 |
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Roadrunner Jr.
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“To argue with a person who has renounced the use of reason is like administering medicine to the dead.” ― Thomas Paine Last edited by sqcomp; 12-13-2010 at 01:08 PM. |
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#3 |
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I kind of knew, but never realized on the effects on such a small driver and how it will play lower frequencies from 200 Hz to 14k Hz. The Spheres as sealed enclosures could affect it's performance, but if I open them into the a-pillar I won't have a problem.
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. CLA 250, 4MATIC |
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#4 |
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Here is a little bit more work on the spheres...
What I thought it would be flat black came out brown, ... ![]() Any way at the end I may end up "FLOCKING" the spheres and the a-pillars, SQ, Palmer or any body else... do you know how to do it? I've been searching online and can't find a DIY ![]() Spheres with primer and some spray paint: ![]() ![]() ![]() ![]() ![]()
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. CLA 250, 4MATIC |
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#5 |
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. CLA 250, 4MATIC |
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#6 |
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I brought the spheres up stairs, for my wife to see... she surprised me and said..."They look pretty good"
So for now they are going to live like that, maybe add some soft texture and a flat black look; then after everything is installed I'll think about flocking or not. I have to get smaller Threaded Inserts to hold the HL-70s to the spheres, the ones I got are a tad too big. AM... save the best for last! ![]() .
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. CLA 250, 4MATIC |
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#7 |
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HAPPY TURKEY DAY EVERY BODY!
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. CLA 250, 4MATIC |
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#8 |
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Black looks much better!
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. CLA 250, 4MATIC |
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#9 |
![]() ![]() ![]() ![]() Drives: Yaris Sedan 2009 Join Date: Sep 2010
Location: Quebec
Posts: 566
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Interior:ALL red, black roof Exterior:RTX scorpion painted GOLD, side and rear visor, oem spoiler, MI mesh grill, Hella supertone horn, RS badge, Vios badge, CF pillar, Led mirror cover, fog light HID 3000k, Projector retrofit HID 8000K Performance :MI CrankPulley, Tein springs, UR and TRD bar, TURBO IN PROGRESS Audio : Pionner DEH-80PRS, HAT L1V2, PowerBass 1100.5X 5 channel amp
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#10 |
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After celebrating turkey day in New Hampshire and a long weekend with Family and Friends, we are back and here I am trying to install the "threaded inserts" I wish they make smaller ones for my 3" speakers, it has to be precises or it won't work, not a lot of space to play with.
Finally at the end looks good and they work great! ![]() ![]() Derick.
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. CLA 250, 4MATIC |
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#11 |
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Sqcomp...
what does "glassing with a racketball" means? ![]() D.
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. CLA 250, 4MATIC |
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#12 |
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Next step... Open a second hole into to the spheres to let the Mids breath! The opening would be a little bit bigger than the red mark, and then I'll match it in the A-pillar, and will seal the edges with Butyl Rope to help with vibrations and acoustics. ![]() Derick.
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. CLA 250, 4MATIC |
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#13 |
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Left a-pillar is ready for speaker + wires, I'm letting the HL-70s breath through the a-pillar, I added some peaces of CLD-Tiles inside the sphere and behind the a-pillar, I will cover the CLD-Tiles behind the a-pillar with CCFoam, I also got a layer of CCFoam between the sphere and the a-pillar.
Feels very solid, we'll see how it works and if it needs more dampening material... ![]() ![]() Derick
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. CLA 250, 4MATIC |
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#14 |
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. CLA 250, 4MATIC |
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#15 |
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I'm getting 16 sq feet of MLV, 10 sq feet have Pressure Sensitive Adhesive, we'll see how it works...LINK to MLV
By the way forgot to mention that the amp and sub are here!
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. CLA 250, 4MATIC |
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#16 |
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I had to peak in one of the boxes... IDQ12's are AWESOME!
The pictures I've seen online don't make justice to such a beautiful beast.
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. CLA 250, 4MATIC |
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#17 |
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One of each! ![]() ![]() ![]() ![]() D.
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. CLA 250, 4MATIC |
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#18 |
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Secret Agent
Drives: 2008 Yaris Hatch Join Date: Feb 2009
Location: Arizona
Posts: 350
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Derick, those are some really nice electroacoustic transducers you got there!
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www.sonicelectronix.com for all your mobile audio needs! |
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