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English
Sealed Box
Bass Reflex Box
ML 3800
ML 2500
Extension
Punch
SPL
Extension
Punch
SPL
Extension
Punch
SPL
ML 3000
Find your Box
Sealed Box
Dimension
Reflex Box
Dimension
Sealed Box
Performance
Reflex Box
Performance
Enclosure Design
The ML Subwoofers electro-acoustic parameters are optimized for use in an enclosure. In this
manual we have provided the specifications for two different sealed and reflex (vented) enclosure
configurations for each model, which vary in size and performance. For each type you will find
projects that favor size, for minimum possible bulk, or for absolute performance, to the detriment
of the space taken up.
ALL OF THESES PROJECTS HAVE BEEN DESIGNED, TESTED AND OPTIMIZED IN THE
LABORATORY AND THEN PERFECTED IN THE ACTUAL VEHICLE INTERIOR.
THE REPORTED CURVES ARE NOT SOFTWARE SIMULATIONS; THEY ARE ACTUAL
DATA OBTAINED BY SOUND MEASUREMENTS DEVICES IN THE VEHICLE.
ML subwoofers can be used in many other enclosure configurations other than the ones listed in
this manual. With the help of a computer simulation software, you may design an enclosure that
is better suited for the acoustics of your vehicle and your desired performance. There are some
practical suggestions to follow when designing an enclosure.
Please remember that:
1_
In the designs included in this manual, the box volume includes the displacement volume of
the speaker itself considering it is mounted with the frame/magnet structure inside the box;
2_
If you invert the subwoofer, with the frame/magnet assembly on the outside of the enclosure,
you should subtract the speaker displacement volume (Total driver displacement) from the
suggested enclosure volume;
3_
The suggested designs, both sealed and reflex (vented), have been optimized considering
the use of a sheet damping material like the AZ Audiocomp FONOFORM on all the internal walls
of the enclosure, other than the speaker’s baffle.
4_
The tuning ports specified in the reflex (vented) designs are meant for mounting near one of the
box corners and their material displacement volume is already included in the overall box volume;
5_
If you wish to design an enclosure with several subwoofers, use only the same subwoofer model
using the same enclosure configuration. Each subwoofer should have its own separate enclosure
within the single structure.
Find your Box
The table below summarizes the main acoustic features for each suggested project. Choose the
kind of sound and performance that you wish to obtain according to your needs and personal
taste. The values are expressed according to the following parameters:
Extension
Indicates the system ability to extend to the lowest of frequencies; that is how deep low frequencies
can be heard and felt. A high value indicates very good extension.
Punch
Means the response speed of the system to musical transients. A high value means a sharp,
impactful sound. Lower values indicate a softer bass.
SPL
This parameter indicates the highest sound pressure that the system can achieve. To obtain very
high SPL level systems, we recommend you choose the projects with a higher value.
Dimension:
This design is deliberately small in order to optimize the available
space; this is the perfect solution for those who have a small space
but do not want to give up a powerful bass.
Performance:
Bigger, both in dimensions and sound, it responds with a full
bodily bass with excellent extension and dynamics.
Dimension:
Almost the same dimensions as the Sealed Box Performance, yet offering
a wider extension, with a stronger sound and an excellent articulation.
Performance:
Great power handling, high sensitivity values and great impact; this is
the perfect design for powerful bass with every kind of music.
Those who wish to find more information on building these enclosures can visit the following address:
www.hertzaudiovideo.com
, where technical files are available in PDF format containing all the tables
with precise measurements.
Caution
Design
