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Application & Enclosure Guide
Please read through this manual to familiarize yourself with your new speakers. Should your PowerBass
Autosound speaker components ever require service, you will need to have the original dated receipt.
Autosound "M" Series Subwoofer
M-1004
M-1204
M-1504
M-1004D
M-1204D
M-1504D
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Summary of Contents for Power bass AutoSound M Series
- Page 1 M-1004 M-1004D M-1204 M-1204D M-1504 M-1504D Autosound "M" Series Subwoofer Application & Enclosure Guide Please read through this manual to familiarize yourself with your new speakers. Should your PowerBass Autosound speaker components ever require service, you will need to have the original dated receipt.
- Page 2 Thank you and Congratulations Congratulations on your decision to purchase PowerBass “M” series woofers. You now own a woofer of uncompromising design and engineering philosophy from a factory that truly believes in the relentless pursuit of perfection. Incorporating the highest quality parts and state-of-the-art materials, these woofers display the ultimate balance between high fidelity, extreme performance and long-lasting reliability.
- Page 3 POWERBASS AUTOSOUND "M" WOOFER FEATURES Proprietary 4-layer, Non-pressed Paper, DDC Finish Cone: The premium grade cones on these sub- woofers are blend of papers and wood pulps, and coated in DDC to protect the cone and eliminate distor- tion. This results in an extremely stiff cone that is resistant to environmental elements while remaining exceptionally stable even under the stress of high sound pressure levels.
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Page 4: Wiring Guidelines
WIRING GUIDELINES It is highly recommended that you seek an authorized PowerBass dealer to properly setup, wire and install your woofers for maximum performance. There are multiple ways to wire your woofers depending on your amplifier and system configuration. The use of multiple voice coils offers you more versatility in system configuration. - Page 5 SINGLE VOICE COIL WIRING SERIES-PARALLEL STANDARD Amplifier Single 4 ohm woofer PARALLEL Amplifier Parallel wiring of two single 4 ohm subs = 2 ohms Amplifier Series/ Parallel wiring of four single 4 ohm subs = 4 ohms PARALLEL Amplifier Parallel wiring of four single 4 ohm subs = 1 ohms...
- Page 6 INSTALLATION EXPERIENCE Installation of PowerBass Autosound Subwoofers requires experience with a variety of mechanical proce- dures including enclosure construction. This manual only provides general installation and operation in- structions. If you have any reservations about your installation skills, please contact your local Authorized PowerBass dealer for assistance.
- Page 7 • VENTED BOX: Also known as a ported or bass reflex enclosure, this type of box is almost as easy to construct as a sealed enclosure. This design however is more efficient and results in an increase of bass output at certain frequencies. Although vented enclosure has an output advantage at some frequencies, it also has a steeper roll off, which will only affect bass frequencies below port tun- ing.
- Page 8 TIPS TO GET THE MOST OUT OF YOUR M SERIES WOOFER Your PowerBass Autosound subwoofer has been meticulous engineered and designed to handle high power musical reproduction. Despite their rugged construction, it is possible to damage your speaker if they are improperly used. In general, you will hear distortion as a so-called warning before any damage occurs.
- Page 9 BOX CONSTRUCTION (SEALED OR VENTED): The material used for enclosure walls should be solid, dense and free of voids or warps. Your enclosure should be made ¾” or 19mm material, Finland or Baltic birch type plywood is recommended where the enclosure will be transported frequently. High- density fiberboard - MDF (not chip board) can be used on permanently installed systems.
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Page 10: Installation Precautions
PREPARING FOR INSTALLTION NOTE: The tools listed below may be required for basic installation. • An electric drill with bits • Saber, circular and jig saw • Phillips-head and standard screwdrivers • Wire strippers • Crimping tool and needle-nose pliers •... - Page 11 PARAMETERS FOR POWERBASS M SERIES WOOFERS (Due to Constant Improvements, Specifications and Parameters are subject to change without notice.) M-1004 M-1004D M-1204 M-1204D M-1504 M-1504D VC Impedance 4Ω 4Ω + 4Ω 4Ω 4Ω + 4Ω 4Ω 4Ω + 4Ω (ohms) Test Impedance (ohms) Driver...
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Page 12: Recommended Enclosures
RECOMMENDED ENCLOSURES Please note that these enclosure volume recommendations are for the internal airspace inside the enclo- sure and include the displacement of the subwoofer and ports. When choosing your enclosure type, please pay close attention to your specific woofer, failing to use the correct enclosure may result in lower power handling and poor sound quality. - Page 13 M-1004D Optimum Sealed Volume English Unit Metric Unit Gross Vb internal 0.75 Cu.ft 21.24L Fc, (resonance frequency of the closed box system) 52Hz 52Hz F3 (-3dB Cutoff) 55Hz 55Hz External Dimensions of the enclosure WXHXD, 3/4" (19mm) MDF 13.5 x 13.5 x 10.5 inch 34.3 x 34.3 x 26.7 cm 0.64 0.64...
- Page 14 M-1204 Optimum Sealed Volume English Unit Metric Unit Gross Vb internal 1.25 Cu.ft 35.4L Fc, (resonance frequency of the closed box system) 45Hz 45Hz F3 (-3dB Cutoff) 46Hz 46Hz External Dimensions of the enclosure WXHXD, 3/4" (19mm) MDF 15 x 15 x 13.5 inch 38.1 x 38.1 x 34.3 cm 0.69 0.69...
- Page 15 M-1204D Optimum Sealed Volume English Unit Metric Unit Gross Vb internal 1.25 Cu.ft 35.4L Fc, (resonance frequency of the closed box system) 44Hz 44Hz F3 (-3dB Cutoff) 40Hz 40Hz External Dimensions of the enclosure WXHXD, 3/4" (19mm) MDF 15 x 15 x 13.5 inch 38.1 x 38.1 x 34.3 cm 0.706 0.706...
- Page 16 M-1504 Optimum Sealed Volume English Unit Metric Unit Gross Vb internal 2.75 Cu.ft 77.9L Fc, (resonance frequency of the closed box system) 35Hz 35Hz F3 (-3dB Cutoff) 34Hz 34Hz External Dimensions of the enclosure WXHXD, 3/4" (19mm) MDF 18.25 x 18.25 x 20 inch 46.23x46.23x50.8 cm 0.74 0.74 Pe (Watts-RMS)
- Page 17 M-1504D Optimum Sealed Volume English Unit Metric Unit Gross Vb internal 2.75 Cu.ft 77.9L Fc, (resonance frequency of the closed box system) 35Hz 35Hz F3 (-3dB Cutoff) 34Hz 34Hz External Dimensions of the enclosure WXHXD, 3/4" (19mm) MDF 18.25 x 18.25 x 20 inch 46.23x46.23x50.8 cm 0.73 0.73 Pe (Watts-RMS)
- Page 18 WE WANT YOU LISTENING FOR A LIFETIME Dear Customer, Selecting fine audio equipment such as the speakers you’ve just purchased is only the start of your musi- cal enjoyment. Now it’s time to consider how you can maximize the fun and excitement your equipment offers.
- Page 19 POWERBASS AUTOSOUND LIMITED WARRANTY POLICY PowerBass USA, Inc. offers limited warranty on PowerBass products under normal use on the following terms: PowerBass Autosound Speakers are to be free of defects in material and workmanship for a period of one (1) year. This warranty applies only to PowerBass products sold to consumers by Authorized PowerBass Dealers in the United States of America.
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