RD Audio Testing Results

lilmaniac2
5,000+ posts

Ask Me about SI Mag V4!
Rd Audio Alpha

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12" Test Session Box

.3 db behind the mag

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Note these scores are to be used as a referance only to other drivers that were tested in this test. I can make a driver do a 150, but this box was built to be most like most spl applications out there today.

doing a 143.7 sealed on the dash in a 2 cube ported box with 2 4 inch aeros tuned to 50 hz peaking 52 hz with approximately 1800 watts. With this amount of power the coil temperature raised quickly and the sub approached mechanically limit

SQ listening Results

1st test

JimJ's Cargo Van in a 1.8 cube sealed box with around 800 watts of power

the subwoofer played accurately and did well in upper frequencies. The bass seemed to be lacking in the lower end, compared to other drivers such as the mag this subwoofer reminded me of the sound of the q in the sealed box ) The low end was there, but not as i would like. I'll let JimJ post his results in here thouroughly

2nd test

2 cubes ported in a Trunk car with approximately 800 watts of power

This subwoofer enjoyed the ported box alot more than the sealed. I must say i was pleasantly surprised low end output of this driver in the ported box. IMO ported is the way to go with this driver. But meh im a SPL nerd.

Im awaiting doing more testing in the trunk car for SPL results hopefully i can get some numbers for you tomorrow out of the trunk car.

Id like to thank RD audio for the opportunity to test this speaker and it lived up to the expectations i had for it

All in all a very nice Mid Level Driver

for pictures and other hype check this thread

http://www.caraudio.com/forum/showthread.php?t=226670

 
now throw in the NEW alphas and see what happens:yumyum:
Yeah, I talked with the owner and it sounds like the new alphas are going to have a good amount more output than the old ones. They will require more power to get loud, but will get louder.

But it is good to see a review on the old alphas. Especially since the prices on the 12's are crazy low right now until Rd runs out of them.

 
Good review chad, these drivers seem to be solid from what my team has found as well. We metered one of our 15" elites on the termlab in an SPL enviroment, and every burp was within .2 DB every time consistantly for around 20 minutes...which is pretty good considering we were throwing ~3kw at it every time.

here is some *** **** of one of our elite 15's

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Thanks snoop, Sorry guys no results today for the SPL, i had to work on another vehicle today... hopefully tomorrow i can get some bass race numbers,

that is if anybody is interested

 
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lilmaniac2

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