so i just metered my car 143 on dash what do you other guys hit
pro stock (under back window)

 

never measured but i have dual 12" P3s with the 1000.1 monoblock on them in a 3.5 cubic foot vented box

 

Heres a list. All wattage is actual clamped wattage.

No wall enclosures
1 18" DC XL 18" 148.6 @37Hz ~600 watts
2 18" RD Heavyweights 150.4 @ 39hz ~1600watts
2 18" Sundown Zv2 18" 152 @40Hz ~3200 watts

Walled Enclosures
2 18" Sundown Zv2 18" 153.5@37Hz ~3200watts
2 18" Sundown Zv2 18" 151.5@30Hz ~3200 Watts (Different enclosure)
2 18" Sundown Audio Nightshade v2 18" 153.5@30Hz ~7,000watts <--- Played over 150dB all the way from 23hz to 60hz within 2-3dB.

 

I burped 140 and can do 136 all day long, and thats only on 500rms. Ive won a stock class trophy at all 3 events Ive attended. My first show I almost didnt qualify as stock because my box was over an inch too tall. So I pulled out the cargo shelf and set the box in the storage tray over my amps. Judge said that was good to go, and I even gained .2db with it there.
With real power, spl specific subs and some deadening these HHRs can make great numbers.

 

were those burps or on music?

 

Burp

 

Can you hear me now?.....lol

 

i hit 130 with a 12inch open air and a 1200 watt amp. It looked cool and only cost me $75 so it worked for me. I also have the pioneer sound

 

Can hear just fine! :)