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Yung SD500-6 500W Class D Subwoofer Plate Amplifier Module with 6 dB at 25 Hz

Brand:| Model: SD500-6
The Yung SD500-6 Class D subwoofer amplifier module rocks larger home subwoofer loudspeakers with its 500 watts RMS at 4 ohms and bass boost.
  • Class D amplifier circuit with switching power supply provides excellent efficiency
  • Capable of sustained, continuous output without thermal shutdown
  • Built-in limiter circuit protection prevents peak overloads
  • Low-level, high level, and LFE inputs for flexible interconnection
  • Manual and automatic on/off mode options
  • 6 dB @ 25 Hz bass boost plus fully adjustable phase, gain, and crossover points
  • Switchable 115/230V input voltage
Part # 
Weight: 7.1 lbs.  
List Price$299.99
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Part # 301-514
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Product Details

Yung SD500-6 500W Class D Subwoofer Plate Amplifier Module with 6 dB at 25 Hz

Yung International's SD Series Class D subwoofer power amplifiers are equipped with the unique ability to operate continuously at full rated output—a performance attribute not shared by most home audio amp designs. The benefits of this remarkable reserve capacity include solid, punchy dynamic range and fewer "nuisance" shutdowns when operated at sustained high levels. A bass boost option enables the addition of 6dB of EQ centered at 25 Hz, perfect for sealed enclosures and even certain vented box alignments.

The amplifiers are also extremely compact, lightweight, and cool-running, allowing users to enjoy the advantages of compact system form factors and flexibility of placement. An internal peak limiting circuit prevents amplifier overload, and protection against internal and external faults is also provided. Input power requirements are user configurable to either 115 VAC or 230 VAC line voltage.

Room optimization and system integration are accomplished easily, thanks to the SD Series amps' inclusion of fully variable level, crossover frequency, and phase controls. Signal input is connected via dual RCA-type jacks, including the means to accept the output of an A/V receiver's LFE output, and dual RCA jacks are also provided to facilitate line level loop-through. When in standby mode, the amp's full active operation is engaged by signal presence of less than 1/2 watt.

Specifications: • Measured power output: 500 watts RMS into 4 ohms @ < 1.0% THD • Signal to noise ratio (at rated power): >90 dB • Input sensitivity (@ low level): 210 mV/50 Hz • Bass boost: 6 dB @ 25 Hz • Low pass adjustment: 40 Hz to 200 Hz • Phase adjustment: Continuously variable from 0º (normal) to 180º (reverse) • Power requirements: Switchable, 115/230 VAC, 50/60 Hz • Dimensions: 9-7/8" W x 10-5/8" H x 3" D; Cutout dimensions: 8-7/8" W x 9-3/4" H.

Yung SD500-6 500W Class D Subwoofer Plate Amplifier Module with 6 dB at 25 Hz
  • BrandYung International
  • ModelSD500-6
  • Part Number301-514
  • UPC844632095658
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (12 Reviews)
  • Weight7.1 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Yung SD500-6 500W Class D Subwoofer Plate Amplifier Module with 6 dB at 25 Hz
Yung SD500-6 500W Class D Subwoofer Plate Amplifier Module with 6 dB at 25 Hz is rated 4.3333 out of 5 by 12.
Rated 5 out of 5 by from Quality & Operation excellent!I have been operating the Young SD500-6 for one monthI have been operating the Young SD500-6 for one monthQuality better then expected. All Parts are Glued In Place to Prevent damage from Excessive audio Vibrations. It has a removable Heavy Duty Power cord. The unit I received, has a Large aluminum heat sink on the Pre Driver Power Audio Transistors. The Main Power Out Put Driving Transistors are heat sinked to the Plate itself. The on board, Bass Boost , Cut & Freq controls work very good. The only issue I found is the Power Output transistors that are head sinked to the plate itself, are mounted near the audio pots (The Bass Boost, Cut & Freq Controls). This causes all the main heat to dissipate the majority of the heat near these controls, but so far it has not been an issue. The Entire Plate itself does get fairly warm while in use but not really hot. I have been operating the Plate Amp at mid power for 30 to 60 minute continuous intervals with a total on time of over 8 hours. The Plate Amp gets fairly warm to the touch but not hot. I have it mounted in a 2 foot cubed area, with out any fans for cooling. I have not tested it at full output. I’m using it in my home theater room to drive six 12” sub woofers. The Plate seems to operate better at higher impedances then lower, so if you’re connecting more then one speaker to the unit I would configure your connections to give higher load impedance then low load impedance that’s within the amp specifications. I know Amp power out decreases at higher impedance loads but the Plate stays cooler and seems to have less distortion. This is by ear only, I have not verified it with a Scope (Oscilloscope) to actually look at the distortion levels.Over All: Price Vs Power - I give it 5 starsSuggestion: I would put the unit into some type of metal electrical box to prevent any of the components from getting damaged or any one toughing it while in operation. Also I would add a fan to the side of the box to help move the air around the plate. I suggest a 220vac PC fan connected at 120vac. to reduce fan speed and fan noise. You only need to keep the air moving. If you put the Plate Amp into a sub woofer wooden box, the air movement from the sub would probable be enough to keep the unit cool.
Date published: 2014-02-25
Rated 1 out of 5 by from Unreliable, poor quality.I purchased this sub amp about 10 months ago, at the time around $US300. My brother built a sub box, extremely well built, with 2 x Vifa 10" drivers. I routed the rear of the box, so the Yung SD500-6 would fit neatly.It has worked fine for a few months, with the exception of the initial problem: with no devices connected, when i initially turned the SD500 amp on and it makes a noise that sounds like a repeating tweet sound. High pitch, repeated, volume does not change with volume controls on sub amp. This went away after some time.The problem today: When connected to my home theatre amp, nothing comes out. When connected to an RCA lead to phono plug, connected to my phone, nothing comes out. It has a LED power light on the back, but nothing seems to be working. Swapped out every cable, problem solved it to the best of my ability and it shows no signs of life, other than the LED power light.Due to freight costs, i'm left with a $300+ paper weight as there are no schematics or wiring diagrams available after the purchase.
Date published: 2014-02-23
Rated 5 out of 5 by from bestim very happy with Yung SD500-6 500W Class D Subwoofer Plate Amplifier Module with 6 dB at 25 Hz excellent, Shipping very fast thanks parts express
Date published: 2014-02-04
Rated 5 out of 5 by from Great Plate AmplifierI purchased the Yung SD500-6 to pair with a sealed Dayton HO-15. This amplifier did not disappoint. It has plenty of power, and the boost really helps my sealed subwoofer reach down low for ground shaking bass during movies. I have a very large great room with a single 15" sub, and this amplifier provides more than enough power to fill my room with amazing bass.I have used Bash plate amplifiers in the past, and so far, the Yung amplifier is every bit as solid as the Bash amplifiers I have used in the past.
Date published: 2014-02-06
Rated 3 out of 5 by from Gone in a few monthsInstalled this to power a home built sealed box NHT-1259 4-ohm sub. It definitely out-performed my previous class A amp, and had very low thermal load. The pre-amp and this plate amp are on opposite sides of the room and do not share the same power circuit. I have used a Radial isolation transformer in the past with great results. In this case, the amp seemed not to like the output impedance of the isolation transformer and had a lot of hum. If I connected it directly, letting the GND's connect seemed to quiet it down. Odd. I suspect that may be where things have gone badly. The amp was not heavily used, and we only powered it up on occasion to watch a movie. The last time I left the power on, expecting the auto shutoff to kick in. Not sure if it did. But, it's dead now. The unit comes on when there is signal, but the amp seems to be in protect mode, as there is no power to the speaker. I replaced this with an older 250-watt Dayton branded amp I have lying around, it the Dayton amp seems to work fine without an isolation transformer and is going on and off with signal as correct in auto mode.So, not sure what killed this thing. I think I am just a few days outside of warranty. So, I cannot recommend this amp just for this reason. Short lived.
Date published: 2014-04-15
Rated 4 out of 5 by from Provides PopI purchased this SW amp to replace the blown amp in my Newton Series 500W SW. Had to build up the bottom to accommodate the deeper amp. Plugged it in yesterday and reran Advanced MCACC on my Pioneer Elite SC65 and the sub-woofer rocks. Before purchasing, I called Tech Support and asked which of their SW plate amps would be best and they recommended this unit then transferred me to Sales. Whole process was smooth as the sound I am now enjoying.
Date published: 2013-07-19

Product Q&A

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Yung SD500-6 500W Class D Subwoofer Plate Amplifier Module with 6 dB at 25 Hz

Frequencies between the woofer and the midrange go where?

This amp has a crossover maximum of 200hz. Does this mean nothing is sent to the woofer above 200hz.? If so, the frequencies from 200hz. up to where the midrange starts would be lost since most midrange speakers don’t start until well above 200hz. Is there a way this amp can be set to send the woofer frequencies above 200hz, up to about the 500hz range, or disable the crossover and let me add one myself? Thanks.
Asked by: Steve in Omaha
Perhaps you didn't read the product title. This is a SUBwoofer amp. As in NOT a "woofer" amp. Its for low bass only.
Answered by: Matt
Date published: 2014-04-14

What about a 16 ohm speaker system?

The specs for this speaker says "500 watts RMS into 4 ohms". My question - what about a 16 ohm speaker system? How much wattage would the speakers be getting? I've got two 8-ohm speakers wired in a series to give me 15 ohms total.
Asked by: marababol
The best way to wire your speakers is in parallel for a 4 ohm load and best suited for the SD500-6 / 500 watts @ 4 ohms or250 watts per 8 ohm speaker.Amps don't care how many speakers are connected as long the impedance does not exceed its operating load, output power is divided.Below shows impedance verse power.Two 8 ohm speakers wired in parallel = 4 ohmsTwo 8 ohm speakers wired in series = 16 ohms500 watts @ 4 ohms250 watts @ 8 ohms125 watts @ 16 ohms62.5 watts @ 32 ohms
Answered by: salvatore J
Date published: 2014-04-14

How is the "switchable" 6dB "bass boost" accomplished? I don't see a switch on the front panel. Is there a switch on the inside?

Yung SD500-6 500W Class D Subwoofer Amp Module with 6 dB @ 25 Hz
Asked by: FireCloud
I may be wrong, but I don't believe it is "switchable," nor does the product info describe it as such. My guess is that these units are pulls from production subwoofers or perhaps designed to augment the bass response of a typical subwoofer driver at a target frequency (in this case 25Hz). Can't find any confirmation of this, but the documentation doesn't seem to indicate that the boost is switchable, though if you are using a reasonably modern AVR, you can probably adjust for this with the subwoofer settings, even with the non-boost version. Just my 2c.
Answered by: jmarchitect
Date published: 2013-02-21

What is the slope of the variable crossover?

Asked by: darrellh44
Hello Darrell,I checked PDF specifications and it does not say their either.if i had to guess based on 30 years experience say:18 db.please explain the concern to better understand for best suggestion.
Answered by: salvatore J
Date published: 2012-12-17

What mounting screws are recommended?

Asked by: monomer
Hello monomer,I'm sure a Phillips pan-head #8 wood screw will do.if you want to kick it up a notch:#8-23 Phillips machine screws with TEE-NUTS.Screw length is dependent on your wood thickness.1/2 wood = 3/4 in.3/4 wood = 1 in.TIP:For #8 wood screws drill a pilot hole using 3/32 drill bit.Note:please test fit #8 size first,,,, manufactures tooling can change without notice....
Answered by: salvatore J
Date published: 2013-02-08

I'm building massive ported sub box and tuning it to about 32hz. It's built for an 18" sub. would this be able to drive this (i'm still undecided on driver but will need decent power.) it would be driven hard playing music just as much as movies.

Asked by: spur31
Without knowing anything about the subwoofer it is impossble to say. This is sufficient power for most large subwoofers on the market especially if it is a high sensitivity type driver.
Answered by: MattP
Date published: 2014-02-19

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