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I am pretty good with SPL related topics, but not SQ. I want to attempt SQ in USAC in 2000, but I also want to be competitive in DbDrag. I want to do a wall in my Dodge Daytona hatchback with 4 15's. I am just curious if doing a wall will cost me points or hinder my chances in SQ. I was considering using 8's up front for bass, and only using the wall at SPL comps. What do you guys think?
------------------ Daniel Lenz Ama 1-2 Member of TEAM EPICENTER "Step Up To The Button" 146.2 legal best 147.0 outlaw best 149.4 outlaw extreme best "Wisconsin's Loudest!! 1-2 Woofers" ***This post represents only my views, not those of Team Epicenter***
Posts: 764 | From: South Milwaukee, WI | Registered: May 1999
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posted
Only problem will be not being able to reproduce the lower registers of musical bass, because your wall pretty much kills any chance of being on the 1/4 wave of a lower note. You could overcome this by heavily eq'ing the lowest registers, but that would end up probably making you lows sound very tubby and thumpy. Tech-Man has been doing quite well all season with his walled dodge, maybe he could better answer this question.
------------------ STILL waiting to hear a GOOD pair of HLCD's!!
If it dont fit, force it... if it breaks, it needed to be replaced anyway...
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It is all system setup and how well you can get your midbass to work. I competed USAC in 96 and had Veritas aluminum horns with USD motors, Diamond 6.5 midbass in custom kicks, and a wall with 8 12's. The car sounded great and I received many compliments on how well the bass eminated from the front even though the subs were right by your head. It can be done, but expect hundreds of hours of tuning. Well, that's any SQ car though. The Griz has spoken.
------------------ Brian Obara Metro Audio Dynamics Omaha, NE
Can you smellellellellell what the Griz is cookin'???
Break it down!!!
Posts: 734 | From: Omaha, NE | Registered: Aug 1999
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Well I have seen one car here locally that had a wall of subs in an SQ can and the car will be at USAC finals. The person that owns it is Tony Rodregiuz (sorry on the spelling of that last name) he is among the top 5 in USAC points. A good portion of the points was done with his truck BUT the car has also done quite well. I have not gotten a chance to listen to it but from what I remember being told not damn bad...considering....
BTW he has PHGold amps and SS SPL 170 15's...6 of then in a Betetta..
------------------ _____________________ Member of "Team Underconstruction" Can you say 172dB outlaw 160's+ legal in a yugo? We can:-) 1999 USAC Finals Qualifier Usac Sactioned Judge -----Judged----- 1999 Spring Break Nationals 1999 Midwest Regional 1983 Camaro-152dB old system..new system on the way. -Irc Chat Room- chat.talkcity.com ports 6667,6668,6669,7000 Room Name #auto-audio I am the room coordinator for this room. Stop by sometime and say hi...We are busy after 9:00cdt usually.
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I have had a chance to judge a truck with 4-15's, 2pr of mids and 1 pair of tweets. Scored a big fat Zero. The first bass notes at moderate listening volume created tremendous air pressure that did not allow the mids to work without wavering (like talking through a fan). Needless to say the competitor was an unhappy camper, but understood after some basic explanation of physics.
------------------ E.C. Wuz here
Posts: 1057 | From: Vancouver, British Columbia, Canada 'eh | Registered: May 1999
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So, it can be done, but it is all about how well you tune it, correct?
Right now, my box is 5 cubic feet with huge ports. It sounded like crap when I first used it musically, but over the months, I have found the sweet spot with my amps and EQ that it really sounds nice musically, and know where to set it after an SPL competition. This sort of thing is what I would be looking at again if I were to do a wall. I just was wondering if I should build another box like the one I currently have or do 4 separate sealed boxes? Is anyone familiar with PG Xmax's. I have heard on numerous occasions that my stuff would hit much harder in a sealed box?????
------------------ Daniel Lenz Ama 1-2 Member of TEAM EPICENTER "Step Up To The Button" 146.2 legal best 147.0 outlaw best 149.4 outlaw extreme best "Wisconsin's Loudest!! 1-2 Woofers" ***This post represents only my views, not those of Team Epicenter***
Posts: 764 | From: South Milwaukee, WI | Registered: May 1999
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posted
I agree with Griz sounds like they needed a lesson in tuneing a SQ system. Heck you need very little bass in relation to the mids and highs. Not the type of bass that creates that kinda of pressure.
------------------ _____________________ Member of "Team Underconstruction" Can you say 172dB outlaw 160's+ legal in a yugo? We can:-) 1999 USAC Finals Qualifier Usac Sactioned Judge -----Judged----- 1999 Spring Break Nationals 1999 Midwest Regional 1983 Camaro-152dB old system..new system on the way. -Irc Chat Room- chat.talkcity.com ports 6667,6668,6669,7000 Room Name #auto-audio I am the room coordinator for this room. Stop by sometime and say hi...We are busy after 9:00cdt usually.
posted
E-mail hammer_one@hotmail.com. He is a member of this Forum and has a car with a wall of 10 x 12's for SPL, and 2 eights in a remade dash for SQ. He switches the wall off when doing SQ and he won all Pro sound offs he entered and it sounds unreal!!!
Posts: 137 | From: UK, | Registered: May 1999
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posted
E-mail hammer_one@hotmail.com. He is a member of this Forum and has a car with a wall of 10 x 12's for SPL, and 2 eights in a remade dash for SQ. He switches the wall off when doing SQ and he won all Pro sound offs he entered - it sounds unreal!!!
Posts: 137 | From: UK, | Registered: May 1999
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posted
If I do a wall with two 15" DD9000's for SQ will they be two slow for a good transient response? should I go with 12's? I also want spl. I have now room for mid bass larger then 2-4" per side. Im still working on this as its a big problem getting any spl around 80-100 hz out of them, which is where i need it for imaging. Audiophyle, you said, Only problem will be not being able to reproduce the lower registers of musical bass, because your wall pretty much kills any chance of being on the 1/4 wave of a lower note. I dont really understand that? Lower "registers" of musical bass? and do you need to be a 1/4 wave away from those lower notes to hear them properly? or did you just mean the lower notes will have to much pressure below the 1/4wave.
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Posts: 1269 | From: Fullerton. CA ,USA | Registered: Oct 1999
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