Street Beat Rules Discussion.

Here are the rules as they read right now.

1. No constructed enclosure or speaker placement that may manipulate the SPL sensor may
be placed forward of the “B” pillar and will be considered reason to reclassify the vehicle to the
Port Wars or Super Port Wars divisions or disqualification. This decision will be at the discretion
of the head judge.
2. Scores will be determined by an average SPL taken over 30 seconds.
3. Sensor placement will be any place in front of the “B” pillar facing forward with globe affixed
or mounted to windshield without globe at 12” to the left of passenger’s side A pillar and 4” above
the dash. (Competitor’s choice)
4. Only commercially available music may be used for judging (no burned cd’s). Only music
may be played. Music must contain a discernible bass beat or rhythm. Music with intentionally
extended bass tones will not be allowed. This will be at the discretion of the head judge.
5. 1200 rpm maximum (no revving engine during test).
6. Windows up or down, doors and/or sun roofs open or closed. Doors can be fanned but not
slammed during the run.
7. In the event of a system malfunction prior to a score being recorded, the competitor will be
given 5 minutes to make repairs and attempt to register a score.
8. Factory or factory replacement front seats must be installed in the vehicle in factory
locations. Must have the front bench or both front seats.
9. No woofers larger than 8” inches may be forward of the “B” pillars.
10. Exception to “USACI General Rules”. In Street Beat a competitor may compete in multiple
classes within the Street Beat division provided his/her vehicle meets the qualifications for that
class. .
(Example: A competitor has 4 - 10" woofers which qualifies him/her to compete in SB2, 3, 4 and
5 but not SB1. Remember that points qualification for SB1, 2, and 3 are listed as "maximum".)
11. Pros* may only compete in SB5.
12. SB5 is the only class open to any vehicles that use a system voltage higher than 14.7 volts
or that uses multiple alternators. Any competitor who qualifies for Street Beat 1 through 4
may compete in SB5 by choice.
13. Reruns are allowed.
14. Any current USACI member who competes in at least one Street Beat event will be invited
to compete in Street Beat at the USACI world finals.
16. In the event an issue arises that is not covered in this section, the USACI Outlaw
SPL “General Rules” will apply.

General Rules

DIVISIONS:
Outlaw SPL divisions are based on the configuration of the system and vehicle. Specific
guidelines for each division will be discussed in their respective sections of this book.
POWER CLASSES: See Appendix A – Power Class and Division Limitations
AMPLIFIERS DEFINED:
One amplifier is considered one power supply, one system board, driving 1 or 2 channels. A 3-4-
channel amp would be considered two amplifiers. A 5-6-channel amp would be considered three
amps and so on. A single heat sink with more than one power supply or system board may be
considered more than one amplifier at the discretion of USACI.
A car audio system’s total wattage shall be determined by the highest manufacturer rated output
divided by the proper number to ascertain the 4 ohm power output, or the manufacturer’s 4 ohm
rating, whichever is higher. If any amplifiers rating cannot be determined, that amplifier will be
moved to the highest power class in that division until such time as a rating can be determined.
USACI reserves the right to independently test any amplifier to determine the true RMS power
rating and reclassify that amplifier as needed.
BATTERIES and BATTERY LIMITATIONS DESCRIBED:
The physical size of each battery is limited to 800 cubic inches (13110 cubic cm) or less. (Height
x Length x Width. Excluding the battery terminals.) The physical shape of the battery is irrelevant.
A 12 volt battery is defined as a battery that has a nominal terminal voltage of 12-Volts, consists
of 6 internal series-connected cells, and is lead/acid or gel-type. A 16 volt battery is defined as a
battery that has a nominal terminal voltage of 16-Volts, consists of 8 internal series-connected
cells, and is lead/acid or gel-type. A battery shall have no more than two “unique” battery
terminals connected to the system, one being positive and the other being negative. Batteries
with more than two posts connected to the vehicle or system will be counted as multiple batteries.
Batteries that exceed these 800 cubic inches or exceed allowed number of cells will be
considered multiple batteries. (Example: 801-1600 cubic inches is tow batteries. 12 volt battery
with 7 to 12 cells would be two batteries, and so on).
These limitations apply to all classes with defined battery limits. Any class and/or division that
allows unlimited batteries will not be bound by this definition. “Stock” battery may be relocated
and/or used to power the audio system. (1 + Stock = 2 batteries total in the vehicle).
PROPER POWER CLASS:
A competitor may not compete in a power class other than the one that his/her total system
power dictates. The exception to this would be the unlimited or “OPEN” power class
Any and all amplifiers within the vehicle under test will be included in the system’s total power.
This sum will not include the power, if any, of the systems source unit (radio, cassette tape or CD
player) unless it is actively driving a speaker or a group of speakers. All amplifiers in the vehicle
must be operational and actively used in operating the sound system during testing or be
physically removed. At local events amplifiers may be left in the vehicle provided the event
director has the ability to definitively determine the amplifier is not in use.
Competitors whose systems include amplifiers that are not manufacturer rated, are modified
internally, or not commercially available will be required to compete in the unlimited power class
of their respective division.
POWER SOURCE All audio equipment must derive its power from the vehicle power source. No
external power sources (battery chargers, etc.) will be allowed. In the case of a podium, power
must be drawn from the vehicle power source. The test vehicle’s engine may be running during
testing, but will be limited to 1200rpm. The vehicle’s emergency brake must be set during testing.
USACI OUTLAW SPL JUDGES:
Outlaw SPL judges shall be appointed by the head judge or the event sponsors and are subject
to approval by USACI. A USACI Outlaw SPL judge shall not be allowed to judge any vehicle
being entered by an immediate family member, employee, employer or substantial customer. The
head judge may appoint an alternate to judge that vehicle. It is within the head judge’s or other
USACI Outlaw SPL official’s authority to decide the application of this rule to any disputes.
JUDGING ORDER:
The head judge will determine if there is a specific judging order. Judging will end when all
vehicles have been judged. No score or refund will be given to a competitor who fails to have
their vehicle in the judging line before the judging has ended.
“5 Minute Rule”
Any competitor who allows or causes more than a 5-minute “gap” between cars at the judging
station may have 1 point deducted from their highest score at the discretion of the event director.
USACI reserves the right to run an event using either an in-place or specific order judging routine.
At any event it is the responsibility of the event coordinator or head judge to inform the
competitors involved of the details of that day’s judging format.
MULTIPLE JUDGING LINES:
Some events may form two or more judging lines in order to expedite the judging process. In
such cases all competitors in a particular power class and division will be judged in the same line
and on the same test equipment. It is the responsibility of the competitor to confirm which lane his
or her power class and division is to be judged in.
DRIVING THE VEHICLE THROUGH:
Judging shall be conducted with each competitor’s vehicle being driven through a judging line in
an orderly fashion and under its own power. The vehicle must be capable of entering and exiting
the judging area under its own power. Vehicle malfunctions may be an exception to this rule and
will be evaluated by the head judge on an individual basis.
SYSTEM OR VEHICLE MALFUNCTIONS:
An equipment or vehicle malfunction is the competitor’s responsibility. Once the vehicle is in
position to be judged, the competitor shall be allowed a maximum of five minutes to correct or
repair any malfunction. After the allotted time has expired, the vehicle must be judged if possible
or given a score of zero. No repairs will be allowed after SPL testing has started. No refunds will
be given.
RERUNS:
At most events competitors will be allowed to rerun their vehicle to improve their score or
standing. If a competitor chooses to rerun his or her vehicle, the sound system must be made up
of the same size speakers, the same number of speakers, and the same number of amplifiers as
was in the vehicle on its first SPL attempt. A change in brand or power rating is acceptable
provided the new equipment does not change the power class or division of the vehicle. There
will be an additional fee for all reruns. All competitors must have an operational system in their
vehicle at the time of registration. This system must be the system the competitor competes with
at the event. Competitors may change equipment in case of malfunction, but entire systems and
enclosures may not be swapped.
Intent: The intent of this rule is to prevent competitors from sharing the same audio system in
more than one vehicle. The head judge at the event shall interpret this rule and such decision
may only be appealed to the USACI rules and ethics committee.
IN CASE OF A TIE:
In the rare event that two or more competitors in the same power class and division receive the
same final score, the winner will be determined by a run off. If after one runoff there is still a tie,
there may be additional run offs or the head official may conduct a coin toss. This will be left to
the discretion of the head event official.
Disrupting An Event
The head judge or event director reserves the right to deduct points or ask any competitor to
leave an event if the competitor’s behavior becomes disruptive during the course of the event. If a
disruptive competitor is asked to leave, the competitor will not receive a refund. Any points or
awards the competitor might have earned at that event will be forfeited. Competitors will be
responsible for the actions of their guests at the event.
If the cause of the inappropriate behavior is believed to be alcohol or any other controlled
substance, USACI has the right to ban the competitor from competing in any sanctioned USACI
events for a minimum of one year.
To help assure that every USACI event is conducted in a safe environment, no weapons in the
possession of a competitor or anyone accompanying a competitor will be tolerated. If the
competitor does not comply with this demand, he or she will be disqualified, asked to leave the
event site or be escorted from the site by the local authorities. Any threats towards anyone
involving a weapon, however casual, shall be deemed just cause for banning the competitor from
ever again competing in any USACI sanctioned event. No refunds will be given for being
disqualified.
Protests:
If a competitor has made a plausible complaint, involving any unfair or illegal item which may be
hidden in another competitor’s vehicle in the same power class and division, and would require
disassembly of that vehicle or audio system to verify its existence, then the complaint must be
accompanied by a cash security deposit. (No checks) Such complaints may only be made after
the vehicle in question has been judged at that event and before any prizes are awarded. The
security deposit required to file a protest at a Regular or Double Points event would be $500.
Regional, Triple, and finals events will be $1000.
The Head Judge must have the security deposit in hand before any action may be taken. The
Head Judge would then appoint two qualified persons to disassemble the vehicle for inspection.
The competitor whose vehicle is in question may elect not to have their vehicle inspected by
disqualifying themselves from the event with no refund. If, in the Head Judge’s opinion, the
vehicle in question is found to be inconsistent with this rule book, the cash security deposit will be
returned to the competitor making the complaint and the competitor in question may be
disqualified from that event and all future USACI events for a period of up to two years. If an
inconsistency is ruled to be unintentional, then the competitor in question may only be disqualified
from that event. If in the Head Judge’s opinion, no inconsistency is found in the vehicle in
question, then the cash security deposit, less 20% USACI protest fee, will be awarded to the
competitor whose vehicle was inspected and it will be the responsibility of the competitor who
was protested to reassemble the vehicle or audio system.
A USACI member may protest the output of any brand and model of amplifier. The protest
procedure will entail the member sending a letter of protest to the USACI office containing the
make and model of the amplifier to be protested. A $300 nonrefundable protest fee must
accompany this request. USACI will acquire the amplifier and test the amplifiers at the USACI
offices in order ascertain if the amplifier’s actual output falls within the published output specified
by the manufacturer. If this amplifier is found to produce 120% or more of its rated power, that
amplifier will be disqualified until the manufacturer correctly rates that amplifier. The USACI
rating standard is 14.4 volts with a 4 ohm non-inductive load measured at 62hz at 1% THD.
Appealing a Decision:
If a competitor questions his or her score or the possible error in the judging process by which
that score was achieved, the competitor may seek explanation by the judge or head judge of the
event. The decision of the head judge will be considered final at that event. After the event a
competitor may petition the USACI Rules & Ethics committee to reconsider either a rule or a head
judge’s decision. Neither USACI nor an event sponsor assumes responsibility for any awards
previously given another competitor, even if in error.
SOUND PRESSURE LEVEL TESTING:
All occupants of the vehicle under test shall have proper hearing protection placed over their ears
if remaining in the vehicle for testing. Refusal to wear properly placed hearing protection or
removal of it during the test shall be cause for immediate disqualification from the event and no
score or refund will be given. Neither the competitor nor the judge will be allowed to be in any
vehicle in the Super Modified class. Competitors in Super Modified will be required to control the
audio system from outside of the vehicle and the microphone/sensor will be placed on a
microphone/sensor stand to be provided by the competitor. Only the registered owner of the
vehicle or his/her attorney-in-fact may be inside the vehicle during SPL testing. The SPL
microphone may not be placed on the same side of the vehicle as the competitor. Competitor
must remain in the front of vehicle (forward of “B” post) during testing. (Updated 12/23/2008)
An audio system’s Sound Pressure Level will be measured using an approved sound pressure
level meter. Software for this test must be the current version of the USACI Outlaw SPL
competition compact disc. The director of the USACI event will provide a disk in case the
competitor does not have his own disk.
The SPL judge will be responsible for making sure the SPL meter is set up and functioning
correctly.
The competitor must have the vehicle ready to test prior to entering the judging lane. After the
SPL microphone/sensor has been placed, the software loaded, hearing protection properly
placed over the occupant’s ears and the system readied, the competitor should signal the judge
that he or she is ready for the test.
Once the test begins, the competitor has thirty seconds to try and achieve the highest score
possible. The music, tone or sweep may be restarted and/or the tracks can be changed as often
as possible within the thirty-second time window. The competitor may choose to stop the SPL
testing at any time before the end of the thirty-second time limit but the judge must be able to
verify that the correct software is being used during testing. The use of tone generators, doublers
or any other device that externally (outside of the closed signal chain) generates or alters the
frequencies that the system is playing during SPL testing is expressly prohibited and will result in
disqualification with no refund. Any tampering with the microphone/sensor or attempt to create a
measurement by any means other than SPL produced by the audio system will be considered
grounds for immediate disqualification and possibly being banned from future competition in any
sanctioned events. The senior USACI official present will investigate for any evidence of such
tampering and the ruling of this official is final.
THE COMPETITOR
DEFINING THE TERM “COMPETITOR”:
The term “competitor” applies to the vehicle’s owner, an employee of its owner, an immediate
family member, or a person bearing a power of attorney for the vehicle’s owner. If a competitor is
unable to attend an event, he or she may designate someone to drive the vehicle through the
judging line. The designated person will be considered a competitor and will assume all
responsibilities of such. A “competitor” may not run any vehicle under his name or membership
number unless said vehicle is legally registered to the competitor in his state of residence prior to
the event date. (A bill of sale will not fulfill the requirement for this rule. Updated (12/23/2008)
Defining the term “Pro”:
USACI Stock and Street Beat classes 1-4 are not open to “PRO” competitors. Any person who
meets any of the following conditions is considered a “PRO”.
Competitor works for a car audio dealer, manufacturer or distributor, or has worked for
any of the aforementioned at any time within 1 year of the competition date.
Competitor receives financial compensation for using a specific manufacturer’s
equipment
Competitor receives free equipment or equipment for less than 50% of MSRP from a
reseller and/or manufacturer
Competitors immediate family member(s) meet(s) one or all of the previous conditions
(A competitor may appeal the 1year rule by contacting the USACI office to receive a
variance. Such variance will be decided on an individual basis.)
Any competitor who does not meet the above conditions may still compete in and “PRO”
division should he/she choose to do so. This competitor upon determining he/she prefers a
“non-pro” class may move back to a stock division provided he/she still does not meet any of
the above criteria.
RESPONSIBILITY OF COMPETITOR:
The competitor is responsible for his or her vehicle and audio system and any physical or
mechanical damage resulting from their use or misuse of the vehicle and/or the audio system
therein. It is the competitor’s responsibility to know and abide by the rules contained in this book.
If an amplifier rating cannot be determined by the head judge at any event it is the responsibility
of the competitor to provide manufacturers literature or other paperwork to verify the power rating
of the amplifiers in question.
QUALIFYING FOR COMPETITION IN THE USACI FINALS:
A competitor member accruing 200 or more points for SPL or 100 or more points in Sound
Quality within the competition season will automatically qualify for an invitation to the USACI
World Finals. USACI will award additional World Finals invitations in each state based on points
accrued in comparison to the total number of points available in that state. In states with no points
and in specific cases to be decided by the Rules and Ethics Board, USACI may issue “special
invitations”.
A competitor may compete in multiple divisions at the world finals if the competitor so chooses.
The competitors must compete in the division and class in which he/she accrued the majority of
his/her points prior to competing in any other class or division.
USACI competitor members will accrue event points based on the following schedule.
Single point or “Regular” event
First place 15 event points
Second place 12 event points
Third place 10 event points
All other competitors’ 5 event points
At “DOUBLE POINTS” or TRIPLE POINTS” events the above values are doubled or tripled
respectively.
“Regional” event
First place 45 event points
Second place 40 event points
Third place 35 event points
Fourth place 30 event points
Fifth place 25 event points
All other competitors’ 15 event points
Judges may receive event points for judging an event. The accrual of events points for judging
shall be equal to a first place finish at that particular event. Event points accumulated by judging
may be used to qualify for finals but will not apply toward any point champion awards. Judges
opting to receive financial consideration for judging not receive points for the same effort.

OK guys here are the rules. I talked with Jennissa about a members meeting and she told me that at the last one there were very few spl guys there it was mostly SQ guys, and guess what the SQ rules got changed for last year. I can understand that its hard to get all the guys together at one place for a meeting. Personally I think it should have been held at finals, but hey what do I know. Luckily i think that after all the bs that went down at finals maybe, maybe the rules for sb will get defined like the rest of the classes have been done. Please feel free to post your suggestions here so that maybe they will be taken into consideration.

man you fingers have to be in pain. kimon put the mouse down and step away from the keyboard......lmfao

fstfred wrote:

man you fingers have to be in pain. kimon put the mouse down and step away from the keyboard......lmfao

You would think.....lol

ive done sb since 06 the first year. mike jaffe came up with the original rules. and there on his website

1. No constructed enclosure or speaker placement that may manipulate the SPL sensor may be placed forward of the “B” pillar and will be considered reason to reclassify the vehicle to the Port Wars or Super Port Wars divisions or disqualification. This decision will be at the discretion of the head judge.

2. Scores will be determined by an average SPL taken over 30 seconds. Only music may be played.

3. Sensor placement will be any place in front of the “B” pillar facing forward with globe affixed … or mounted to windshield without globe at 12” to the left of passenger’s side A pillar and 4” above the dash. (Competitor’s choice)

4. Choice of any commercially available music CD provided by competitor (No burned CDs). Music must contain a discernable bass beat or rhythm. (Must be music). Music with intentionally extended bass tones will not be allowed. This will be evaluated by the head judge.

5. 1200 rpm maximum (no revving engine during test).

6. Windows up or down, doors and/or sun roofs open or closed. Doors can be fanned but not slammed during the run.

7. In the event of a system malfunction prior to a score being recorded, the competitor will be given 5 minutes to make repairs and attempt to register a score.

8. * Factory or factory replacement front seats must be installed in the vehicle in factory locations. Must have the front bench or both
front seats.

9. No woofers larger than 8” inches may be forward of the “B” pillars.

10. A competitor can compete in any and all classes for which his/her vehicle qualifies. (Example: A competitor has 4 - 10" woofers which qualifies him/her to compete in SB2, 3, 4 and 5 but not SB1. Remember that points qualification for SB1, 2, and 3 are listed as "maximum".)

11. Pros* may only compete in SB5. (* See below)

12. SB5 is the only class open to any vehicles that use a system voltage higher than 14.7 maximum or utilize multiple alternators. Any competitor meeting any or all of the above qualifications may compete in SB5 by choice.

13. Reruns are allowed.

14. Any current USACI member who competes in at least one Street Beat event will be invited to compete in Street Beat at the USACI world finals.

15. A “competitor” may not run any vehicle under his name or membership number unless said vehicle is legally registered to the competitor in his state of residence prior to the event date. (A bill of sale will not fulfill the requirement for this rule.) The owner of the vehicle must be present at the event and must be the person who has registered to compete with it. Competitor may opt to have another person run said vehicle in the competition on his/her behalf.

16. In the event an issue arises that is not covered above the decision will be at the discretion of the head judge and the USACI Rules and Ethics Board.

* A USACI competitor is considered a Pro if he or she meets one or more of the following conditions: • He or she works for a car audio dealer, manufacturer or distributor, or • receives financial compensation for using a specific manufacturer’s equipment, or • a competitor’s immediate family member meets one or both of the previous conditions.

well dang it

I know that I am about to open a can of worms with this statement but oh well. I think Street Beat should be allowed more than one alternator.

Wish in one hand and Dung Pile in the other and which will fill up 1st.

Ralphs Wang.... A big juicy handful

14. Any current USACI member who competes in at least one Street Beat event will be invited
to compete in Street Beat at the USACI world finals.

i was told this rule was change middle of the season u half to have 200 this past world finals

Sb5 can have more than 1 alternator

lowdime wrote:

Sb5 can have more than 1 alternator

Yes but I was refering to SB 1 - 4

Boy, Street Beat sure is a can of worms for a class designed to only be offered at local shows and only to local competitors.

I remember when the initial discussion for street beat happened and I warned then that people would start building for the division and guess what, now we have problems because people are building for it and wanting more rules. Yeah, Ralph is indirectly to blame for even allowing Street Beat at finals because it wasn't designed for finals, much like my Intro division.

The whole premise of Street Beat was to have very few rules and be easy to understand by the local guy who didn't want to get caught up in a bunch of rules or get moved to one of the "OH MY GAWD I HAVE TO COMPETE AGAINST THAT!!" classes at a local show. Face it guys, those mobile speaker enclosures on wheels that are in a lot of the upper end classes are intimidating to the guy rollin' with 2 12's and a Pyramid amp.

My suggestion has always been for fewer rules to \"Female dog\" about and whoever is the most creative and loudest wins. Most of you didn't compete "back in the day" when Outlaw SPL was just that, Outlaw. Run what you brung, crank it up and whoever is loudest wins. Back then there weren't even any rules in Outlaw and the director classified people right there at the show.

Don't get me wrong, I like Street Beat. I like the fact that the SPL is derived from a 30 second average rather than pulling the trigger and seeing how much air you can compress in a second or two. I saw a 180 at finals this year and it wasn't near as impressive from a spectator's point of view than one of the SB cars raising he!! for 30 seconds.

FWIW, before asking for more rules, be careful what you ask for. I took SEVEN pages of rules out of the SQ book this year and didn't have NEAR the problems with people complaining that I've had in years past. I've found that more rules usually = more people complaining.

x2 run what ya brung but would like to keep oem glass just so super mods cant run and do easy 170s

Only allow mat in front of B pillar and thats it everything else needs to be OEM equivelent at least in 1-4.( No removing things or covering vents) If you wanna make a few mods to re inforce weak areas make that for sb5. Also I still say only 1 alternator in 1-4. Also batts need to be visable and you need to have at least 100 points to enter a sb class at finals. Last but not least is to enforce this RULES strictly!!!!!! No matter if its a manufacturer backed vehicle or not. RULES ARE RULES!!!!

2003f150 wrote:

Only allow mat in front of B pillar and thats it everything else needs to be OEM equivelent at least in 1-4.( No removing things or covering vents) If you wanna make a few mods to re inforce weak areas make that for sb5. Also I still say only 1 alternator in 1-4. Also batts need to be visable and you need to have at least 100 points to enter a sb class at finals. Last but not least is to enforce this RULES strictly!!!!!! No matter if its a manufacturer backed vehicle or not. RULES ARE RULES!!!!

I would specify the type of mat because fiberglass comes in a mat form just saying. Like it Team Sprown

Alarm God wrote:

2003f150 wrote:

Only allow mat in front of B pillar and thats it everything else needs to be OEM equivelent at least in 1-4.( No removing things or covering vents) If you wanna make a few mods to re inforce weak areas make that for sb5. Also I still say only 1 alternator in 1-4. Also batts need to be visable and you need to have at least 100 points to enter a sb class at finals. Last but not least is to enforce this RULES strictly!!!!!! No matter if its a manufacturer backed vehicle or not. RULES ARE RULES!!!!

I would specify the type of mat because fiberglass comes in a mat form just saying. Like it Team Sprown

Very true....foil back deadening LOL and TEAM SPROWN FTW!!!

Well I agree
Too many rules aren't fun... But no rules is insanity

The_Rowlands wrote:

x2 run what ya brung but would like to keep oem glass just so super mods cant run and do easy 170s

how about OEM glass in front of the b- pillar? I may want to do a walk through one day. Also my back window is JIMMED up because I accidently broke it and it was gonna cost $475 for a new back window.

Alarm God wrote:

I know that I am about to open a can of worms with this statement but oh well. I think Street Beat should be allowed more than one alternator.

Then get in sb5!!!!!!!!!!!!!!!!!

annarbor84 wrote:

Alarm God wrote:

I know that I am about to open a can of worms with this statement but oh well. I think Street Beat should be allowed more than one alternator.

Then get in sb5!!!!!!!!!!!!!!!!!

I am in SB5! I know that I am a pro, I work for a retailer. But I guess if I quit 3 months before finals and say that I don't and work at a cabinet TRIM SHOP I can enter a consumer class. But just a question for you have you seen the voltage drop these guys/gals have in street beat? Its insane. Yea the other classes have voltage drop but nothing like the sb runs do, that is why I made that statement. Plus do you know how many fullsize GM trucks/suvs have twin alts from the factory? I dont see why the sb competitors cant have multiple alts stock class does only other class that doesn't allow multiple alts is trunk 0-1000. so that is what 5 classes that aren't allowed multiple alts as the what 15 other classes that do. So how exactly does that make sense?

Fred only dropping to 11.5 is not low at all.

Its below what the amps normally like

Plus think about the batteries they dont like being drained like that im sure

was yall on nsb 100's?

sanman wrote:

was yall on nsb 100's?

Nope they had 9 sprinter batts on 8 sundown 3500 @ .5 ohm each and one 300 amp alt and only dropped to 11.5. I drop to 11 with 4 m3 @ .25 and 6 nsb 90 and 180 amp alt....wonder how much 3 more 90s would help....

2003f150 wrote:

sanman wrote:

was yall on nsb 100's?

Nope they had 9 sprinter batts on 8 sundown 3500 @ .5 ohm each and one 300 amp alt and only dropped to 11.5. I drop to 11 with 4 m3 @ .25 and 6 nsb 90 and 180 amp alt....wonder how much 3 more 90s would help....

alot