What should be the power of the receiver, considering the existing speakers?



I have a Sony Mutek Ddw2000 Home Theater, including the STR-DG520 Receiver.
Unfortunately, a receiver channel has been damaged, and has no repair.
I then need to replace this receiver.

These are the technical specifications of the broken receiver, and of its speakers, which I intend to keep with me:

RECEIVER
Output power*
(6 ohms, 1 kHz, 10% THD)
Surround Mode Output (Reference) *
RMS Output
FRONT: 140 W per channel *
CENTER: 140 W per channel *
SURROUND: 140 W per channel *
SURROUND BACK: 140W per channel *

(*) Measured at 127 V AC, 60 Hz

Inputs:
Analog Sensitivity: 800 mV / 50 kohms
Digital: (Coaxial) Impedance: 75 ohms
Outputs (Analog):
AUDIO OUT Voltage: 800 mV / 10 kohms
SUB WOOFER Voltage: 2 V / 1 kohm
Tone:
Gain levels ± 6 dB in 1 dB steps
Playback frequency range: 28 - 20,000 Hz

SPEAKERS:

Front Speakers (SS-MSP16)
2 way system, 3 units, magnetically shielded
Speaker Unit:
Woofer: 160 mm, cone type × 2
Tweeter: 25mm, Horn Type
Cabinet Type Bass reflex
Nominal Impedance: 6 ohms
Dimensions (W x H x D) (Approx.): 250 × 950 × 274 mm
Weight (approx.) 14.1 kg

Center Speaker (SS-CNP16)
Speaker system: 2-way, 3-unit, magnetically shielded
Speaker Units:
Woofer: 100 mm, cone type × 2
Tweeter: 25mm, Horn Type
Cabinet Type Bass reflex
Nominal Impedance: 6 ohms
Dimensions (W x H x D) (Approx.): 514 × 174 × 223 mm
Weight (approx.) 4.9 kg

Side Surround / Rear Surround Speakers (SS-SRP16)
Speaker System: Full Range
Speaker Unit: Woofer: 100 mm, Cone Type
Enclosure Type: Bass reflex
Nominal Impedance: 6 ohms
Dimensions (W x H x D) (Approx.): 171 × 216 × 163 mm
Weight (approx.) 1.5 kg

Subwoofers (SA-WP16)
Speaker System: Active, Magnetically Shielded Subwoofer
Speaker unit: 250 mm cone type
Enclosure Type: Acoustic Volume-loaded Bass Reflex
RMS output: 165 W (6 ohms, 100 Hz, 10% THD)
Input: LINE IN (input jacks)
Power: 127 V / 220 V AC, 60 Hz
Consumption: 80 W
Dimensions (W x H x D) (approx.): 335 × 410 × 412 mm including front panel
Weight (approx.) 10.6 kg

I would like the guidance of friends here on the forum, which should be the RMS power per channel of the receiver I shall buy, considering the rest of the home theater, ie the speakers, since the new receiver will work with them.

I appreciate the help.


Comments

  • txcoastal1txcoastal1 Posts: 10,503
    Replace the receiver w/denon/marantz, or Yamaha adventage receiver with preamp outs for possible future upgrades

    “Accessories for less” website has good deals
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC
  • pitdogg2pitdogg2 Posts: 13,728
    10% distortion whoa....
  • FestYboyFestYboy Posts: 3,575
    That 140W output rating is bloated. 10% distortion would be beyond unlistenable. Go with the above-mentioned suggestions, even if they're rated at half the Sony, they will give far better performance.
  • Tony MTony M Posts: 8,274
    2nd on replacing receiver with another brand.
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • remomoreiraremomoreira Posts: 6
    txcoastal1 wrote: »
    Replace the receiver w/denon/marantz, or Yamaha adventage receiver with preamp outs for possible future upgrades

    “Accessories for less” website has good deals

    Thank you!! :smile:
  • remomoreiraremomoreira Posts: 6
    FestYboy wrote: »
    That 140W output rating is bloated. 10% distortion would be beyond unlistenable. Go with the above-mentioned suggestions, even if they're rated at half the Sony, they will give far better performance.

    Thank you! :smile:
  • mrlorenmrloren Posts: 2,003
    Do not mess with non ES Sony AVR's. Not the best in the world.

    Look at the above A4L for a Denon/Marantz or Yamaha
    When I was a kid my parents told me to turn it down. Now I'm an adult and my kids tell me to turn it down.

    Family Room:
    Samsung UN75RU710DFXZA,
    Denon AVR-X4400H, Emotiva XPA3 GEN3
    Oppo BDP-93,Sony UBP-X800BM, WD Live HUB.
    Main: Polk LsiM 705
    Center: Polk LSiM 704C
    Front High/Rear High In-Ceiling Polk 80F/X RT
    Surrounds: Polk S15
    Sub: HSU VTF3-MK5

    Bed Room;
    Marantz SR5010, BDP-S270
    Main: Polk Signature S20
    Center: Polk Signature S35
    Rear: Polk R15
    Sub: HSU STF-2

    Working Warehouse;
    Sony 2100ES AVR, Sony DVP-NS3100ES for disc
    Cerwin Vega AT-12 (blasters) Advent Prodigy (listening)
    Old sony 12" Sub
    Mini tower PC with 400GB of music
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