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Yung SD300 300W Class D Subwoofer Plate Amplifier Module No Boost

Brand:|Model: SD300|Part # 301-508
The Yung SD300 300W Class D subwoofer amplifier module produces 300 watts of continuous, honest power, which is enough to drive most home subwoofer speaker systems to very high playback volumes!
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List Price$229.99
Regular Price$139.88
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Part # 301-508
  • 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
  • Fully adjustable phase, gain, and crossover points ensure system optimization
  • Switchable 115/230V input voltage

Product Details

Yung SD300 300W Class D Subwoofer Plate Amplifier Module No Boost

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.

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. The amplifier also accepts high (or speaker) level input signals through binding post terminals. 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: 300 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 • Input sensitivity (@ high level): 3.0V/50 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: 10" W x 7-3/8" H x 2-1/2" D; Cutout dimensions: 9-1/4" W x 6-5/8" H.

Yung SD300 300W Class D Subwoofer Plate Amplifier Module No Boost
  • BrandYung International
  • ModelSD300
  • Part Number301-508
  • UPC844632095627
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (16 Reviews)
  • Weight3.7 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 SD300 300W Class D Subwoofer Plate Amplifier Module No Boost
Yung SD300 300W Class D Subwoofer Plate Amplifier Module No Boost is rated 4.4375 out of 5 by 16.
Rated 5 out of 5 by from Very pleasedI had an amplifier go bad in my Sony dual subwoofer. I looked at replacing the whole subwoofer but the speakers were in very good shape. I decided on the 300 W plate amplifier. It was an easy installation and the amplifier sounds excellent.The original plate was larger than the SD300. I just cut and put a piece of MDF to fill the gap. I put the screws back in that held the original plate to keep the cabinet airtight. On the dual woofer, I connected one woofer in reverse phase because as you see in the picture, it was mounted in reverse.I have my subwoofer back at a fraction of the cost of a complete replacement. thank you Parts Express.
Date published: 2015-03-02
Rated 5 out of 5 by from good amp does the Job!It's called right a review about the product!! Not a story about how you built your box and what you do with your life. Anyways bought this amp June of 2013, does everything it says in the description. Has not failed me yetDoes not get that hot. Sounds clean the bass.Don't think it's really 300watts more like true100watts if even. But really good for my application, I'm very happy with it and satisfied + in the real world of wattage it's usually $1.00 a watt in real watt world so good price. I would buy it again if needed.
Date published: 2015-01-29
Rated 1 out of 5 by from High failure rate!These work well - at first. I have purchased two units for two speaker/sub combos I built. The first unit failed while still under warranty, luckily, and its replacement is still working. The second unit, no such luck. that is a 2/3 failure rate. Both failures the fuse would immediately blow when the amp was switched to auto-on. Now I must decide whether i want to risk purchasing another of the same amp which will fit the cutout in my enclosure, or build a new enclosure to fit a different brand's amp.
Date published: 2014-11-30
Rated 5 out of 5 by from Nice unit, and I used it a bit unconventionallyThis unit is powering a cylinder-type subwoofer I built some time back and put into storage to maybe sell. I already have pairs of cylinder subs in each of my audio rigs, and this one involved a left-over piece of Sonotube and a spare driver. I decided to put the sub to use as a third unit in my home-theater system, and I will probably end up selling it off after a while. For now, it is probably overkill. Anyway, I did not care to install a plate amp in a cylinder sub, so I built a small wooden enclosure (I do a lot of woodworking), and the package is now on the floor, pretty much out of sight. Saves some shelf space. The amp works fine. It runs cool and has more than enough 4-ohm power to light up the driver. I have only three negative observations, neither of which is a big deal. First, there is no eight-ohm rating for the amp. It would be nice to know what that is. Second, there is no input-impedance rating. That would be nice to know, especially if one intended to double up the units from a single LFE output on a receiver. Third, it has only two power-set options: "off" and "auto." It would be nice if it had a third: "on," because I switch mine on and off with a power strip. The auto option seems to work nicely enough with the power strip, however. Good amp, so far.
Date published: 2014-09-17
Rated 5 out of 5 by from Great amp with nice features.I purchased this item to make a home theater satellite subwoofer with the following items listed bellow:1 x Precision Port 2" Flared Speaker Cabinet Port Tube Kit - tuned to 35Hz1 x Knock-Down MDF 0.67 cu. ft. Subwoofer Speaker Cabinet1 x Yung SD300 300W Class D Subwoofer Plate Amplifier Module No Boost1 x E8v3D2 SUNDOWN AUDIO PRO 8" SUB DVC 2 OHM 300W RMS BASS SUBWOOFER SPEAKER NEW4 x Rubber feet (screw in) 1" top taper to 3/4" floor footprint, 1/2 length1 x 4 Oz One step Polyurethane Onyx wood stain in multiple coats for a durable finish.The first step was to dry assemble and test fit the cabinet pieces. Once dry fitting was done then was the step of adding adhesive (gorilla glue) and brad nails to cabinet. Four 2x2 pine cleats were also added for front faceplate stability and strengthening where Subwoofer was to be seated as well as overall cabinet stability and strength. The back of the cabinet was also measure and cut according to the cut out area as measured on inside of Yung plate amplifier for a nice snug fit 9" x 6.5". The top rear of cabinet was to be the set location of the precision port and a suitable center line was determined for drilling a pilot hole for the 4.25" cut out using a custom polycarbonate hole gauge on my plunge router with a 1/4 straight router bit.All surfaces were sanded cleaned then the stain was then applied and allowed to dry for 4-6 hours and additional stains were added accordingly 4 times. Once dry the unit was ready for assembly of all pieces after another final dry fit. Pilot Holes for all of the screws for amp, sub and port were made prior to final assembly for ease and to avoid splitting the wood cabinet during final assembly. Once finally and fully assembled this baby went into my new media room and was hooked up to power and into my 9.2 Pioneer 1523K's subwoofer RCA out put. Musically this sub performs as well as most 12" satellite subs and is only an 8" mind you but a very beefy 8" Subwoofer. On any movie and digitally enhanced sound tracks this sub also performs as well as bigger subs but with a much smaller footprint. There is plenty of fine tuning that can be made just by changing the adjustable parameters via controls on the amplifier board also. All in all this is a great amp and the price and quality cannot be beat.Overall it was a pretty simple and fairly straightforward build and would recommend for novice to beginner to build too.
Date published: 2014-08-30
Rated 5 out of 5 by from Very satisfied!!I purchased this plate amp to replace one in a sub that had quite.After modifying the mounting hole to fit and connecting the sub to my home stereo I am very impressed with the performance of this amp.I only wish is that the dimensions for mounting the plate could be specified.
Date published: 2013-09-22
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Product Q&A

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Yung SD300 300W Class D Subwoofer Plate Amplifier Module No Boost

I have a 250-watt RMS powered sub from a Infinity TSS-1200 speaker system that is no longer working. What is the best option to replace or repair the amp?

Asked by: JeffL7
Most sub amps are very similar in function so the main things you would want to consider are the power and the physical mounting, I usually recommend measuring the cutout and plate size as a place to start.
Answered by: Chrisf
Date published: 2016-01-27

I just installed this amp, replacing a failed unit. I am having an issue with the auto-On. The sub will not turn on when the receiver is powered up. Any fixes or suggestions to correct this?

Asked by: Tzudawg
The sub will only power up when it receives a signal, not when the receiver is powered up. If it only powers up with the volume turned up a little, you will need to bump up the sub output level on the receiver and compensate by turning the gain down on the amp.
Answered by: MattP
Date published: 2015-10-09

If I have a LFE cable in the LFE input, does that signal pass through to the OUTPUT?

Asked by: dgskijiji
The output will pass whatever is plugged into the input/LFE.
Answered by: MattP
Date published: 2015-10-06

Does the LFE input pass signal through to the output? Could i run a LFE from the same side output to another amp?

Asked by: dgskijiji
No, the output is only a pass-through of the input.
Answered by: MattP
Date published: 2015-10-05

I'm guessing this Yung does not want to be mounted into an enclosure filled with fiberfill damping.  Reference my BASH300 failure review.  Do you agree?  I'm thinking better the Dayton 250 with sealed backside.  Do you agree?  Thanks!

Asked by: trustdollar
This can be mounted in an enclosure will fiber fill, we just recommend keeping some space between them. This or the Dayton SPA250 will work fine for that application assuming you can modify the enclosure for mounting.
Answered by: MattP
Date published: 2015-09-27

I am considering using this amp in a ported enclosure so I need to mitigate over-excursion below 30Hz. Does this plate amp have a high-pass filter and, if so, what are the filter type and parameters? If not, do *any* plate amps have a high-pass filter?

Asked by: juddwilcox
Most plate amps have a subsonic/infrasonic/rumble/HighPass filter that sets between 20 and 30Hz. This is to allow easier operation of the PSU and not stress it with both thermal and current conditions that are beyond its capabilities.
Answered by: Wolfy
Date published: 2015-09-27
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