Car audio (dB Drag) contestant rules:
1.1 dB Drag competition – it’s car audio systems competition.
Sound pressure measurements are recorded with SPL-Lab/Term-Lab devices.
1.2 These competition purpose- to popularize the culture of car audio enthusiasts in Lithuania, to encourage car owners and users to follow the traffic rules, to ensure the safety of participants and spectators, their property and to establish the rights and obligations of participants.
The participant must be acquainted with the rules of the competition and during the registration confirm this with a signature or during registration register that he / she has read these Rules.
1.3 A participant who does not follow these rules – will be disqualified and all results measured during the competition – will be canceled.
2.Participation in competitions
2.1 Participate in competition can person not younger than 18 (eighteen) years of age, who have filled the registration form, which could be found in the description of each event, paid the Competition participant’s fee in accordance with the procedure and terms established by the organizers, brought technically tidy, clean cars and fulfilled the conditions specified in the Rules.
2.2 All information about the terms of registration of participants, payment of the participant’s fee is indicated in the descriptions of the competition. Participants on the website www.bassroyal.lt must fill in the registration form and pay the Participant fee (the participant fee may vary depending on the location of the event, the scale of the event, etc., the participant fee is indicated in the descriptions of each competition event). The participation fee can be paid by the persons who have filled in the application by bank transfer to the organizer’s account:
Company code 305069380
Bank acc. LT897300010158192456 (Swedbank)
Swift code: HABALT22
or in cash on the day of the Competition to the Organizer of the Competition at the place of the Competition, not later than before the start of the Competition.
2.3 The Competition Organizer has the right to suspend the Registration of Participants earlier than the deadlines specified in the Competition Descriptions.
2.4 Priority is given to Participants who have registered during pre-registration and paid the Participant fee by bank transfer.
2.5 On the day of the competition, Participants must arrive at the time set by the organizer. If the Participants arrive later, the Organizer has the right do not let participant enter the Competition area.
2.6 Upon registration, payment of the Participant Fee. The Organizer issues a note to the Participant, which confirms the Participant’s registration.
2.7 A mark confirming the payment of the registration fee is attached to the Participant’s sheet issued to each participant, which the participant must keep on the front panel of his car for the entire duration of the competition. The participate start sticker is considered an analogue of the mark.
2.8 At the end of the registration, the technical commission, convened by the Organizer, inspects the car audio equipment of all participants and confirms in which class the Participant will compete.
2.9 In the registration form, the Participant must indicate the modifications of the car, if there is any.
3. Competition categories
3.1 SPL RACE
3.1.1 During the measurement, the maximum instantaneous sound pressure level in the car interior, in the range of 20-60Hz, is recorded.
3.1.2 During the measurement, Participants can use any media (USB, data storage, Bluetooth interface, etc.) with any music recording
3.1.3 The measured frequency shall be not less than 20 Hz and not more than 60 Hz.
3.1.4 If the maximum result is recorded during the measurement in the band below 20 Hz or above 60 Hz, the result will be fixed as 0,00 dB.
3.1.5 Sound pressure measurement is performed in 60s.
3.2 BASS RACE
3.2.1 During the measurement, the average pressure for 60 seconds in the car interior, in the range of 25-50 Hz, is recorded. 3.2.2 To perform the measurement, the Participant is given an audio track prepared by the Competition Organizers (in the range of 25-50 Hz). 3.2.3 The average pressure emitted by the car sound system is recorded. 3.2.4 The result is registrated when entire soundtrack was played.
4. Division into classes
4.1 Participants are divided into seven classes: Junior, Street Stock, Street A, Street B, Street C, Extreme, Extreme PLUS.
4.2 Participants are divided into classes according to the sound system installed in the car and the modifications made to the car.
4.3 Every speaker with a diameter of 25cm and more is considered a subwoofer. Passive audio emitters, ports, and channels are not considered subwoofers.
4.4 In classes Junior, Street Stock, Street A, Street B ir Street C may participate unprocessed cars without partitions or walls with the number of seats specified in the technical passport. The seats may be folded during the sound pressure measurement, but it must be possible to fold them to their original position at the request of the judge. The entire sound system must be installed in the boot. Additional openings on the outside of the car body are not permitted. Any partition or wall in a car is an acoustic system.
4.5 Cars with acoustic systems can only compete in the Extreme class.
The rear windowsill is not considered as an acoustic system. Minimum makeovers (door speaker podiums, rear windowsill) is not included in car makeover.
4.6 Participants can use any audio system powered by the car’s 12V electrical system. If the supply voltage exceeds 16 V with the engine switched off, the competitor may compete only in the Extreme and Extreme PLUS classes.
4.7 The car’s engine does not have to be switched off during the measurement.
5.1.1 In this class may participate Participants with the manufacturer’s factory subwoofers and factory boxes.
5.1.2 The subwoofer and box must conform to the specified model.
5.1.3 The audio equipment used in these classes must be accessible to everyone (there can be no custom-made equipment).
5.1.4 In this class may not participate companies involved in the sale of audio equipment or their representatives.
5.1.5 These classes are designed for cars, without major modifications, also cannot include the following cars: Honda CRX, Fiat Panda, Seat Marbella, Yugos, trucks, minibuses.
5.1.6 Standard 12V, 6-section lead / acid or gel batteries (AGM) for cars are allowed. Batteries must be securely fastened. Battery capacity is unlimited.
Lithium batteries are prohibited.
5.1.7 An amplifier with a power declared by the manufacturer not exceeding 500 W rms and a total resistance not less than 1 Ohm is permitted.
5.2 STREET STOCK
5.2.1 The Street Stock class is for participants who have not previously participated in the upper classes (Street A, Street B, Street C, Extreme, Extreme PLUS).
5.2.2 The audio equipment used in these classes must be accessible to everyone (there can be no custom-made equipment).
5.2.3 In this class may not participate companies involved in the sale of audio equipment or their representatives.
5.2.4 These classes are designed for cars, without major modifications, also cannot include the following cars: Honda CRX, Fiat Panda, Seat Marbella, Yugos, trucks, minibuses.
5.2.5 Standard 12V, 6-section lead / acid or gel batteries (AGM) for cars are allowed. Batteries must be securely fastened. Battery capacity is unlimited.
Lithium batteries are prohibited.
5.2.6 The number of speakers is unlimited.
5.2.7 This class allows 1 amplifier with a manufacturer’s declared power not exceeding 1500 W rms and a total resistance of at least 1 Ohm.
5.3 STREET A
5.3.1 Minibuses and trucks are not allowed on Street classes.
5.3.2 Amplifiers used for non-subwoofers are not counted.
5.3.3 Standard 12 V batteries are allowed. The main battery must be in the place provided by the manufacturer, the additional one – in the trunk. Batteries must be securely fastened. Battery capacity is unlimited.
Lithium batteries are prohibited.
5.3.4 Up to 2 low frequency amplifiers can be used.
5.3.5 Acoustic walls or partitions are not permitted, except for the rear window sill.
5.3.6 One 30 cm (12 „) diameter subwoofer
or not more than two 25 cm (10 „) subwoofers, or not more than three 20 cm (8“) subwoofers.
5.4 STREET B
5.4 .1 Minibuses and trucks are not allowed on Street classes.
5.4.2 Amplifiers used for non-subwoofers are not counted.
5.4.3 Standard 12 V batteries are allowed. The main battery must be in the place provided by the manufacturer, the additional one – in the trunk. Batteries must be securely fastened. Battery capacity is unlimited.
Lithium batteries are prohibited.
5.4.4 Up to 2 low frequency amplifiers can be used. Acoustic walls or partitions are not permitted, except for the rear window sill.
5.4.5 One 38 cm (15″) diameter subwoofer
or not more than 2pcs – 30 cm (12″) subwoofers,
or not more than 3pcs – 25 cm (10″) subwoofers,
or not more than 4psc – 20 cm (8″) subwoofers.
5.5 STREET C
5.5.1 Up to 2 low frequency amplifiers can be used. Acoustic walls or partitions are not permitted, except for the rear window sill.
5.5.2 Battery capacity is unlimited.
5.5.3 One 46 cm (18“) diameter subwoofer,
or not more than 2pcs – 38 cm (15″) subwoofers,
or not more than 3pcs – 30 cm (12″) subwoofers,
or not more than 4pcs – 25 cm (10″) subwoofers,
or not more than 5pcs – 20 cm (8″) subwoofers.
5.6.1 The number of speakers is unlimited.
5.6.2 Not more than 4 amplifiers per speaker.
5.6.3 Battery capacity is unlimited. The maximum allowable voltage is 18 V.
5.6.4 The equipment must be installed behind the front door frame.
4.5.5 Acoustic walls or partitions are not permitted, except for the rear window sill.
5.7 EXTREME PLUS
5.7.1 The number of speakers is unlimited.
5.7.2 Not more than 4 amplifiers per speaker.
5.7.3 Battery capacity is unlimited. The maximum allowable voltage is 18 V.
5.7.4 The equipment must be installed till the front door frame.
6. Vehicle requirements
6.1 The vehicle must approach the measuring point itself, with the help of its own engine.
6.2 The sound pressure sensor is attached to the windscreen at a distance of 30 cm from the right strut of the car and at a distance of 10 cm from the front panel. The distance from the sensor to the seat must not be less than 76.2 cm
6.3 Sound generator, frequency multipliers, harmonizers, speakers with servomechanisms and so on, use is prohibited.
6.4 All components of the audio system must be safely attached (additional, capacitors, amplifiers, etc.) and must not violate the rules for their use and exploit specified by the manufacturer.
6.5 The cables for the sound system must not present a hazard.
6.6 Subwoofer boxes may not be attached during the competition, if they do not violate the rules for their use and exploit.
6.7 During the measurement, the car’s original or retrofitted air-blowing devices must be switched off (this provision also applies to the car’s interior air conditioning system), doors, windows, hatches or boot lids and all other openings must be closed (except the driver’s door), the parking brake must be applied . Failure to comply with these requirements will result in disqualification.
6.8 At the measuring site during the preparation for 5 min. the participant is allowed to seal, in the opinion of the participant, leaky places of the car with adhesive tape or other materials.
7. The course of competition
7.1 After the division of the participants into groups, the qualifying stage of the competition is carried out in each group, i.e. the sound pressure of all cars in the same group is measured.
7.2 After the participant enters the measurement site, participant is given 5 min. of preparation.
7.4 The participant must arrive at the site in 5 minutes. after the judge instructs the microphone. If the participant does not arrive at the site within the set time, the measurement is not performed. In this case, the participant’s result is 0.00dB.
7.5 After the qualifying stage, there are eight or four (if there are less than 8 participants in the group) participants whose car sound pressure measurement results are the best. They continue to compete in the upper stages, others are eliminated from the competition.
7.6 After the qualification, the participants compete in pairs according to the result shown in the following order: first with the eighth, second with the seventh, third with the sixth, fourth with the fifth (first with the fourth, second with the third).
7.7 The relegation stage of the competition follows the rule: losing – falling out.
7.8 The participant can use any medium (USB, data logger, Bluetooth interface, etc.) with any music recording, the measured frequency is not lower than 20 Hz and not higher than 60 Hz. The recording must be musical. If the sound recording during the measurement is lower than 20Hz or higher than 60Hz, the result is 0.00db or the Organizer indicates in the Competition Description that the music recording will be provided by the Organizer.
7.8 If a failure has occurred in the participant’s audio system during the measurement, but the result is recorded higher, the participant must be able to rectify the fault before the next stage of the competition. If this fails, the losing participant in the pair enters the next round.
7.9 If the audio system fails at the measurement site but before the measurement starts, the participant can clear / adjust his audio system for 5 minutes. If he is not able to get his audio system fixed in order during this time, the participant loses the right to compete further – he falls out.
7.10 Only the driver’s side door can be opened during the measurement. If any door other than the driver is opened during the measurement, the participant will be disqualified.
7.11 If the second participant agrees and the judge allows, once the violation has been remedied, a re-measurement is carried out (immediately without leaving the measurement place).
7.12 Between measurements, or at a sound measurement site within 5 minutes of preparation, it is permissible to change the subwoofers or other parts of the system to the same (or smaller) size, quantity and power as declared at the time of registration.
7.13 With the same measurement results, participants are given the opportunity to charge their car batteries for 5 minutes (only with the help of the engine, without the use of any additional loaders) and check the sound system without leaving the site. After 5 minutes, the
7.14 Only the participant controls his car sound system.
7.15 The participant is allowed to have a support group (up to 5 people including children) at the measurement site next to the car. The participant and / or members of the support team are allowed to hold the car body parts by touch during the measurement. Actions of the participant and / or members of his / her support group (intoxication with alcohol or other psychotropic substances, aggressive behavior, fights, insults of judges, other participants, spectators and other acts contrary to generally accepted moral norms) entitle the judges to disqualify the participant.
7.16 During all competitions, the participant is fully responsible for the actions of his support group members in accordance with the provisions of these rules.
7.17 If less than 4 Participants are formed in the specified Classes during the Registration of the Competition – the class will be canceled. Participants in the canceled class are promoted to a higher class. If the Participant does not agree to change the class – the Participant has the right to refuse to participate in the Competition or Category.
8. Final provisions
8.1 Car audio systems can create high sound pressure, so participants are advised not to be in the car during the measurements and to use the remote control. Those without a remote control of the audio system are allowed to be in the car if the participant uses additional hearing protection (headphones). Unauthorized persons are not allowed in the car during the measurement.
8.2 The organizers do not take responsibility for possible health problems of the participants.
8.3 The organizers and judges do not take responsibility for possible failures or damages of the participant’s audio system or car during the competition.
8.4 The participants of the competition must not violate public order, respect other participants and spectators, listen to the instructions of the judges. Road traffic rules must be observed in the territory of the event, violators are responsible for their violations in accordance with the laws of the Republic of Lithuania.
8.5 Distribution of advertising material (flags, awnings, music track, booklets, flyers, etc.), exposition during the event in the event area is allowed only with the prior agreement of the competition organizers and their permission. If the advertisement is not coordinated with the competition organizers, the person / group of persons will receive a warning. Failure to observe the warning – the driver / person or group of persons / participant is sanctioned: disqualification, leaving the event area, in case of conflict – a fine of 100 EUR.
8.6 All protests against judges’ decisions are made only in writing. A fee of 35Є (thirty-five euros) is charged for accepting an opposition. If the protest is found to be justified, the fee is refunded. If the protest is not recognized by the judges, the fee is used for organizational costs and is not refunded to the protester.
8.7 The registration fee will not be refunded to the disqualified participant.
8.8 Provisions made public between stages can be edited by the organizers.
The organizer reserves the right to change, fill in the rules, it is not obliged to inform the interested parties.
In all related questions, individuals can inquire by e-mail: