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  5. SL715
DD Audio SL715 15" (38cm) Subwoofer
SKU:  SL715-D2
1000 Watt

SL715

SKU:  SL715-D2

Technical Highlights

  • With 1000 Watt RMS power, 27.7 Hz Fs, optimal for precise bass.
  • 3-inch voice coil, impedance D2/D4, designed for maximum efficiency.
  • Rigid cones, dual-layer spiders, wide bandwidth from 30-300 Hz.
  • More technical details
€299,00
€299,00 €299,00
5% discount with credit card
inkl. VAT , possibly plus shipping
Impedance: D2 (2x2 Ohm)
Delivery
May 28, - Jun 2,
x piece
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SL715 by DD Audio

The SL715 from DD Audio is a 15-inch Subwoofer with an RMS power of 1000 watts. It is available with either a D2 or D4 impedance and features a high-energy 3-inch voice coil. The construction includes rigid, lightweight cones with low mass as well as dual-layer spiders and highly compressed EROM surrounds. The design utilizes flat cast frames in combination with highly efficient motors for a compact build. The frequency focus is in a range of 30 to 300 Hz. This Subwoofer is designed for integration into sealed enclosures or enclosures with bass reflex ports.

Features
  • 15-inch (38 cm) Subwoofer
  • Power: 1000 watts RMS
  • Impedance: D2 or D4
  • 3-inch voice coil
  • Rigid, lightweight cones with low mass
  • Dual-layer spiders
  • Highly compressed EROM surrounds
  • Flat cast frames
  • Highly efficient motors
  • Frequency range: 30 to 300 Hz
Technical Specifications
  • Diaphragm diameter: 381 mm
  • Fs: 27.7 Hz
  • Qms: 6
  • Qes: 0.73
  • Qts: 0.66
  • Vas: 54.9 liters
  • Xmech: 40 mm
  • Xmax: 19 mm
  • Frame outer dimensions: 391 mm
  • Frame outer dimensions with gasket: 394 mm
  • Mounting diameter: 352 mm
  • Mounting depth: 172 mm
  • Motor diameter: 170 mm
  • Motor depth: 63.5 mm
  • Woofer displacement: 2.55 liters
  • Sealed enclosure: 25.4 – 70.8 liters
  • Enclosure with bass reflex port: 50 – 77.9 liters

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Frequently Asked Questions about SL715

What technical features does the SL715 Subwoofer offer?

The SL715 from DD Audio offers a variety of technical features that make it unique. It is equipped with a 3-inch voice coil that ensures high energy efficiency. The cones are made from a rigid, lightweight material, which, combined with dual-layer spiders and highly compressed EROM surrounds, provides precise and fast sound. Designed for a power of 1000 watts RMS, it is capable of covering frequencies between 30 Hz and 300 Hz, making it suitable for various musical applications. This means that this Subwoofer also performs well in compact enclosures such as in vehicles or boats. Its versatility is also evident in the ability to integrate it into both sealed and bass reflex enclosures.

How can the SL715 Subwoofer be optimally installed in vehicles?

The SL715 Subwoofer features a compact design that offers a variety of installation options in the vehicle. With an outer frame diameter of 391 mm and a mounting depth of 172 mm, it can be flexibly installed under or behind seats. The woofer displacement value of 0.09 cubic feet must be considered in the enclosure design. Both sealed enclosures with a volume of 1.25 to 2.5 cubic feet and bass reflex enclosures with a volume range of 1.75 to 2.75 cubic feet are suitable. These dimensions make the SL715 versatile in use, whether in trucks, motorcycle bags, or off-road vehicles.

What frequencies can the SL715 optimally reproduce?

The SL715 from DD Audio is designed to optimally reproduce frequencies in the range of 30 Hz to 300 Hz. By focusing on this range, the Subwoofer can clearly represent both low and mid frequencies, providing excellent sonic depth. Particularly, the nature of the cones, made from a rigid yet lightweight material, combined with the high-energy 3-inch voice coil, allows the SL715 to accurately reproduce these frequencies. This makes it ideal for music genres that require detailed bass reproduction.

What Thiele/Small parameters characterize the SL715 Subwoofer?

The Thiele/Small parameters of the SL715 Subwoofer from DD Audio are crucial for its performance and are evident in several aspects. The Fs value, which describes the resonance frequency, is at 27.7 Hz. The Qms is specified at a value of 6, indicating good mechanical quality. The Qes value is at 0.73 and the resulting Qts is 0.66, which indicates good electrical matching and underscores its suitability for both sealed and bass reflex enclosures. A Vas value of 54.9 liters indicates the equivalent volume performance, which, along with an Xmax of 19 mm, allows for precise reproduction of low frequencies.

How resilient is the SL715 Subwoofer in terms of wattage?

The SL715 Subwoofer from DD Audio is designed for a continuous power of 1000 watts RMS, indicating its high resilience. This power capacity stems from the robust construction of the voice coil and the materials used. The 3-inch voice coil is responsible for efficiently converting electrical energy into mechanical vibrations without losing quality. This high power allows the SL715 to provide clear and powerful sound in both music pieces with intense bass parts and in quiet passages.

What are the dimensions of the SL715 and how do they affect the enclosure choice?

The SL715 has specific dimensions that play an important role in the choice of enclosure. With an outer frame diameter of 391 mm and a mounting depth of 172 mm, it can be easily integrated into compact enclosure solutions. The mounting diameter of 352 mm and the motor structure with a diameter of 170 mm give the SL715 the flexibility to be used in both sealed and bass reflex enclosures. The enclosure volume should be between 1.25 and 2.75 cubic feet, depending on whether a sealed or bass reflex enclosure is desired. These dimensions facilitate placement in smaller volume spaces, such as those found in vehicles or motorcycle bags.

What does the Xmax value mean for the SL715 Subwoofer and why is it important?

The Xmax value of the SL715 Subwoofer from DD Audio is 19 mm and indicates the maximum linear displacement of the diaphragm. This parameter is crucial as it describes the subwoofer's ability to reproduce low frequencies without distortion. A high Xmax value indicates that the subwoofer is capable of moving large amounts of air, which is particularly advantageous in musical genres with strong bass components. This feature allows for maintaining sound quality even at high volumes, which is especially important if you enjoy listening to music loudly.

How does the impedance of the SL715 affect the choice of the amplifier?

The SL715 Subwoofer from DD Audio is available in two impedance variants: D2 (2 Ohm) and D4 (4 Ohm). These values directly influence the choice of the amplifier, as impedance determines the power output of an amplifier. An amplifier optimized for a 2 Ohm load can deliver more current and thus provide more power to the Subwoofer, resulting in stronger bass reproduction. When using a 4 Ohm setup, the SL715 is suitable for operation with amplifiers that prefer a more stable load, leading to a more consistent power intake. The choice between D2 and D4 should be made depending on the specific audio system and the desired sound characteristics.

What motor features does the SL715 have?

The SL715 Subwoofer features a specially designed motor with a diameter of 170 mm and a depth of 63.5 mm. These dimensions contribute to the compact design of the Subwoofer and allow for its versatile use in different enclosure types. The motor works in combination with the 3-inch voice coil, which ensures high power conversion. The design of the motor is intended to enable efficient drive of the diaphragm, which is particularly important for reproducing bass frequencies. This ensures a fast and precise response to input signals.

How does the woofer displacement affect the enclosure design of the SL715?

The woofer displacement of the SL715 is 0.09 cubic feet or 2.55 liters. This parameter is a crucial aspect of the enclosure design, as it indicates the volume occupied by the woofer itself. When calculating the required internal volume of an enclosure, this displacement must be taken into account to ensure optimal acoustic properties. For sealed enclosures, the recommended volume range is 1.25 to 2.5 cubic feet, while bass reflex enclosures require between 1.75 and 2.75 cubic feet. A correctly sized enclosure allows the SL715 to achieve its full power output.

Manufacturer information / responsible person

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

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