LowCost SPL - the measuring format of the subwoofer system, which aims to equalize the participants by classification according to its cost.

 

Procedure of measurement
On measurement to the participant 30 seconds are given (without preparation). The sensor is located inside on the windshield 30 cm from the right front pillar and 10 cm from the dashboard. Sound pressure is measured in the range up to 50 Hz inclusive. In offset goes maximum result (peak).

Valuation

The cost of the subwoofer system is the sum of the RRP (recommended retail prices in russian rubles on the date of measurement) of all amplifiers (connected to subwoofers) and subwoofers (connected to the audio system).

The RRP of each component is calculated based on the following source PRIORITY:
1. The official website of the manufacturer in the domain. RU.
2. Large online stores and portals dedicated to car audio (for example magnitola.ru, loudsound.ru etc.).
3. Small and medium-sized local online shops of car audio (representatives of shops are located in the settlement where measurements are carried out).
4. The official website of the manufacturer of the component in its own domain zone (the price is calculated in rubles at the exchange rate of the Central Bank of the Russian Federation on the date of measurements).

5. Foreign online stores and portals (the price is calculated taking into account delivery to Russia in rubles at the rate of the Central Bank of the Russian Federation on the date of measurements)

The cost of manually assembled components is calculated by the RRP of the donor whose motor (magnet, magnetic cores, core) is used in the product.
If it is impossible to determine the cost of the component according to the above rules - its cost is equal to 100,000 rubles.

In contentious valuation situations, priority is given to the higher price.


Participants are divided into 6 classes:

1. Class 20K (the cost of the subwoofer system does not exceed 20 thousand rubles inclusive).

2. Class 30K (the cost of the subwoofer system does not exceed 30 thousand rubles inclusive).

3. Class 50K (the cost of the subwoofer system does not exceed 50 thousand rubles inclusive).

4. Class 100K (the cost of the subwoofer system does not exceed 100 thousand rubles inclusive).

5. Class Unlim (the cost of the subwoofer system exceeds 100 thousand rubles or assembled enclosure of all subwoofer speakers is outside the original luggage compartment AND not higher than 15 cm from the bottom line of the glazing).

6. Class Extreme (enclosure of subwoofer speakers is located outside the original luggage compartment and above the bottom line of the glazing by more than 15 cm).
 

Restrictions

  • In classes 20K-30K-50K-100K assembled acoustic enclosure and connected subwoofers must be within the original luggage compartment and not higher than 15 cm from the bottom line of the glazing (subwoofers in the inverted state do not affect the height)⚠
  • ⚠In the class Unlim assembled acoustic enclosure and connected subwoofers must be no higher than 15 cm from the bottom line of the glazing (subwoofers in the inverted state do not affect the height)⚠
  • On judging in classes with 20K to 100K you need to install the rear seat backrest in the standard (stock) position.
  • Acoustic enclosure of subwoofers in any class should be behind the middle rack of the car (acoustic design-design for installation of subwoofers and mounted on it mounts, accessories, ports, etc.).
  • All sound material must be played through loudspeakers.
  • In case of absence of the participant in the car during refereeing it automatically gets to a class Extreme.
  • It is forbidden to move audio system components from one vehicle to another during the whole competition.
  • Organizers of the format are forbidden to participate in the competition.

Permissions

  • Measurements are made in any position of the doors and without taking into account the people holding the car.
  • Any music/test material can be used.
  • Any strengthening of a body and glasses are allowed.
  • It is allowed to remove / change elements of salon and their position on measurement.

Disputable situation

  • In contentious valuation situations, priority is given to the higher price.
  • When the result of two participants is the same, priority is given to the result with the lower frequency. If both the result and the frequency are the same, priority is given to the cheaper subwoofer system.
  • Any component of the subwoofer link must be available for inspection by judges.
  • Participation fee after registration is not refundable under any circumstances.
  • Re-measurement is given only in case of technical problems during measurement.

Revision of the rules of 29.08.2019
©Copying, reproduction, distribution or other use of the material without the written permission of the organizers is not allowed.