Sony Car Stereos  
SONY XM-SD51X Class D Mono Subwoofer Amplifier
Sony XM-SD51X Class D Mono Subwoofer Amplifier

Technical Specification

  • RMS Power Output (Watts x Channels): 250 x 1
  • Frequency Response: 20-200 Hz
  • THD at Rated RMS Power: 1%
  • Signal to Noise Ratio: 76 dB
  • Input Voltage: 14.4v
  • Peak Power Output (Watts x Channels): 600 x 1
  • Power at 2 Ohms (Watts x Channels): 500 x 1
  • Bridged Power (Watts x Channels): N/A x N/A
  • Minimum Impedance Bridged: 0
  • Minimum Impedance Un bridged: 2
  • Amplifier Class: D
  • Tri-Way Capable: No
  • Low-Pass Crossover Frequency: 50-300 Hz
  • Low-Pass Slope (dB/octave): 12 dB/oct
  • High-Pass Crossover Frequency: N/A
  • High-Pass Slope (dB/octave): N/A
  • Bass Boost: 0-10 dB
  • Bass Boost Frequency: 40 Hz
  • Fan Cooled: No
  • Fuse Rating: 40 x 2
  • Speaker Level Inputs: Yes
  • Pre amp Outputs: 1 pair
  • LED Power Indicator: Yes


  • Reviews

    4 Thumbs Up :CAN U SAY S.P.L ??

    To all looking to buy this amp. My two bits.

    When I ordered this amplifier i bought it with my hard earned bonus around xmas 2005. I was in the market for a mono block amp as I never had one and I was always borrowing others on time share ha ha.
    I searched all of amazon for an amp that was good looking, cost optional and of course had to balance power with cost. when i came across this amp i was like ok let's try this. I already had 2 Audio pipe 10's at 250rms each and an xplod Deck.

    So I decided to marry the two together with a boss digital eq.
    I dare say I was soulfully disappointed when i first hooked it up. Now obviously someone is going to say (i new this was sh***) but you have to read on.
    I really was hurt because i had one 10 on the wires and it sounded good mind u and I had a reggae CD i just burn all 90%+ bass to test this sucker.
    So sun fall sun rise. I opened the back of the car took the sucker out went for the manual are scanned the pictures.

    At one point i looked up to the sky and said right......Volume..!!!
    Man look.. I had the amp at standard(settings on shipping)
    I went and got me a screw driver and turned the bit*** up.

    NOW... we're talking. That Sony is hot........it's heavy no fooling, don't even THINK about stuffing it under chair because if you run it hard it WILL get hot....... I am in love with the phone line remote level control. Tt's beautiful. at night especially because the blue that it emits blends back with my blue seats and interior. My best friend wanted to buy it the moment it landed in my hands and i am so darn glad i chose not too. I am only sorry it doesn't get below 40hz. Other wise it's bloody shaking. If you can set your receiver to mono like my explod can do it and then you'll see.........4 stars mate

    I plan to take the whole set up down and rewire and do a final set up and retest with a bass CD and give you the results.


    3 Thumbs Up :Nice power, when it works...

    I've been using this amp for my two 10" Sony Xplod subs and they hit HARD. No complaints with sound or inadequate power but about a month ago it started having problems. Every time i turned my car off it blew a fuse. The people at circuit city knew enough to tell me it was the amp and not the wires but they didn't have the equipment to investigate further so now i'm out $200 and have two killer subs that I can't use...


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