Pic that showed up in my email today

[1rockford1 5,000+ posts]

me want re se.new style one

 

[Louisiana_CRX 5,000+ posts]

me want re se.new style one

those look nice

 

[1rockford1 5,000+ posts]

meh

 

[sobe3yourself. 10+ year member]

i cannot explain to you how many fvcks i do not give

 

[ahole-ic]

i cannot explain to you how many fvcks i do not give

Son clearly you give more fucks than jenna jameson because you took the time to post with the rest of us. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[twistedchild420 5,000+ posts]

Much better read here.........

Car Audio Classifieds

 

[Johnny Law.Lulz 5,000+ posts]

DC=RE= paying more for less.

 

[audiophile831 10+ year member]

Its funny how many people got all bent outta shape on SMD over this .. lol

 

[PioneerSPL1990 10+ year member]

Much better read here.........
Car Audio Classifieds

oh hears another joke of a fucking site. sucks that i can't read it because apparently i deserved a permaban with no warning for "attacking" the moderation.

twisted could u be so kind to copy and paste?

 

[2000LaDe 10+ year member]

if you cannot see the similarity to the re motor i'm afraid i can't help you here... This is widely known and i'm sure rusty wouldn't deny it as the re designs were sold for some time and are proven. It is likely dc uses different compliance suspension and perhaps a coil variation to make it all their own... But as for the se to the lvl-3 motor the only physical motor variation is that the re has an extended lip from the top plate in the frame id and the lvl-3 doesn't. Again; this is fine for what it is but denying the similarity is silly.
You missed what i said on the frames... Exact same factory. Not just country... Xy (abbreviated long chinese name) makes almost all of the cast frames in the world today on the same exact molds. If i get a frame, dc gets a frame, and dd gets a frame there is a 95% chance they came from the exact mold at the exact factory.

Regardless of application, period, a large diameter pole vent is a very poor method of coil cooling -- did you check the klippel link ? There is a dramatic increase in cooling blocking the vent.

For stamped frames there is a reason many stamped frames now come with spider plateau venting -- see ia 187, dd 1508, and pretty much any jl sub (jl uses their patented elevated frame method and their patent goes into great detail on the thermal benefits as well). The use of un-vented stamped frame and large diameter pole vent is either because :

1) the driver doesn't need to handle any more power than it will "naturally" for it's coil size / spec.

2) the manufacturer is unaware of recent research in thermal power handling.

3) the manufacturer doesn't care or thinks it looks good to have a big vent.

4) the vent is used to keep air noise to a minimum for a specific application.

Typically it is #1 -- for instance... A dc lvl-3 will handle 600-watts as it sits. It would handle alot more with a plugged pole... I've re-coned some as such and power handling was increased tremendously.

Even in the dc line the vent gets small as you move up in the series to increase the bypass factor -- eg: More air goes behind the former and windings and less air in and out of the vent.

Totally blocking the pole without channels also has an efficiency draw-back which is why it is sometimes bypassed -- up to 0.4 db in my testing... Which is why we used a vented coil collar on the ns v.1 with plugged pole. This is why scott @ fi developed his cooling channels... So on and so forth.

for the first -- it is pretty widely known that most of the dc lines are at least roughly based on the old re motors. Is this bad ? Well - they are proven designs so not really in that regard. The spiders are also the exact same tool -- also a proven spider design. I won't go into the comparison to our product (sa-8) as i'm not trying to stir the pot.
Also -- 95% of the baskets made today come from the same place (xy in china) -- so this is a pretty irrelevant point on frames. If frames break for any reason this is due to either falling out of the box or really bad baffle flexing. Being that the frames are sourced from the same place and the tools haven't changed for years any other attempted point is irrelevant. I'm sure that you are probably pointing a finger at us given hank's recent frame damage (from falling out of the box) -- which is silly to insinuate a frame issue with the 4-spoke having been proven for years on motors as large as the 9500f from dd.

As for the large pole vent... A large pole vent is the worst possible way to cool a voice coil. For instance... While scott (fi/aa) used pole vents in the past you will notice that all of the fi/aa drivers that offer thermal upgrades totally block off the pole vent -- good reason for that thermally.

Thermal analysis and heat transfer

klippel has written about this in depth -- see above for an example discussion on pole venting.

Alternatively you can manage the back pressure and direct it with the use of a smaller vent and other elements; which is the method i prefer.

We've also done extensive testing on thermal performance in house here as well and verified the same.

real man of genius

 

[CL1CKCLACK 5,000+ posts]

so ghey

 

[tylork92 10+ year member]

was wondering how long this would take to get here. it is a known fact that Rusty bought the old RE plans. The older RE subs were great subs so im glad there essentially still around.

 

[1rockford1 5,000+ posts]

so dc = old re?

 

[AlterEgo99 5,000+ posts]

I was hopin' for some nudz. //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[Johnny Law.Lulz 5,000+ posts]

Jacob is a great person IMO.