How to convert passive subwoofer into active?

[AV1992]

Hi,

I have a Sony STR-DH790 receiver which has a active subwoofer input but my subwoofer is a passive one. I have 5.1 speaker setup with 165W each. I want to utilise the same setup. So request for help.

Product specifications:
Sony STR-DH790 Specifications
Amplifier

• • • SPEAKER IMPEDANCE
      6–16 ohms
    • NUMBER OF DECODABLE CHANNELS
      5.1.2ch
    • NUMBER OF AMP. CHANNELS
      7
  • • POWER OUTPUT
      145 W (6 ohms, 1 kHz, 1ch THD 0.9%)
    • SOUND FIELD
      2ch Stereo, Direct, Multi Ch Stereo, Dolby Surround, Neural: X, Front Surround, Audio Enhancer, Headphone 2ch

Philips HTS 3378 Specifications

Speakers
• System: full range satellite
• Speaker impedance:
• For HTS3276: 4 ohm (centre), 8 ohm
(Front/Rear)
• For HTS3371, HTS3378: 4 ohm
(centre), 4 ohm (Front/Rear)
• Speaker drivers:
• Centre/Front/Rear: 3” full range
• Frequency response: 150 Hz ~ 20 kHz


Subwoofer
• Impedance: 4 ohm
• Speaker drivers: 165 mm (6.5”) woofer
• Frequency response: 40 Hz ~ 150 Hz

 

[sandeepgarg]

There are a lot of videos on the net. Hope they work well. Good luck.

 

[prateekatasniya]

Hi..
You can add a power amplifier for the subwoofer.

 

[tuff]

Like @prateekatasniya said. get a class D amp that can drive 4 ohm loads.100 to 150 watts should suffice. It will depend on how much you want to spend to power that sucker up.

 

[OM_2K19]

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