Audio Database

DSW-707
Commentary

Active subwoofer employing the newly developed P. P. D. D. system.

The P. P. D. D. (Push-Pull Dual Driver) Parallel method developed by DENON is used to enable powerful deep bass playback even though it is relatively small.
The p. P. D. D. Parallel method solves this problem by attaching the edge of one speaker in the opposite direction so that harmonic distortions cancel each other out, reducing low-frequency distortion.
In addition, since the two woofers are push-pull driven, the driving force and vibration equivalent mass are doubled, and the low-frequency reproduction range is expanded.

The unit is equipped with two 20 cm cone type woofers, and by connecting them in parallel, the effective diaphragm area is secured and the amplitude distortion of the speaker is suppressed.
This unit uses a wide rubber edge, a double bumper that reduces rolling, and an aluminum bobbin that increases durability and braking to reduce distortion.
In addition, the amplifier is equipped with a circuit to prevent unpleasant hard clips to the ear, thereby achieving high sound pressure.

A bass-reflex system is adopted for the enclosure, and 18 mm thick MDF material is used for the plate material.
In addition, by adopting an independent sealed amplifier, chattering is suppressed and unnecessary vibration is suppressed.

Equipped with an auto power off function that automatically goes into standby state when there is no signal for several minutes.
It returns to ON automatically when a signal is input.
There were 2 kinds of variations, wood grain finish and black finish.

Model Rating
Method Built-in Amplifier / 1-Way / 2-Speaker / Bass Reflex System / Floor Type / Anti-magnetic Design
<Woofer>
Units Used For Ultra Low Band : 20 cm Cone Type x2
Playback frequency band 20 Hz to 200 Hz
Maximum output sound pressure level 109dB
Amplifier Unit
Maximum power output 110W
Input impedance Line : 47k Ω
High : 4.7k Ω
Filter characteristic 50 Hz ~ 200 Hz (Continuously Variable)
Output terminal Speaker system (L, R)
Line out (stereo, mini jack)
Pwer 100 VAC, 50Hz/60Hz
Power consumption 78W
<General>
External dimensions Width 256x Height 560x Depth 410 mm
Weight 17.6kg
Attachment RCA pin code
2 Parallel 2-Core Cords
Slip Stopper x4