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2x50W TDA7492 Class-D Amplifier Board

Brand:| Model: AA-AB32174
Product Video
Overview
The Class D amplifier topology makes this 2 x 50W amplifier board efficient and consume less space than traditional solid state amplifiers.
Highlights
  • 2 x 50W Class D amplifier
  • Small footprint for space limited applications
  • Built-in cooling fan, pop noise suppression, and over-temp protection circuit
  • 14 to 27 VDC power supply required
Part # 
320-301
Weight: 0.6 lbs.  
IN STOCK
List Price$29.99
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Your Price
$24.90
Buy 4-up$23.62
Part # 320-301
Qty:  EA
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Product Details

2x50W TDA7492 Class-D Amplifier Board

This amplifier board features a state-of-the-art, dual channel Class-D TDA7492 IC, which delivers up to 50 watts per channel. The small 3.6" wide by 4.8" long footprint allows this amplifier board to be used in many applications were size constraints limit the use of conventional amplifiers. Just add a 14 to 27 VDC power supply, signal source, and speakers!

A low noise cooling fan is mounted atop the robust heatsink to maximize heat dissipation. Thermal protection is also included to extend the longevity of the amplifier board. Four fixed gain settings are available to allow for volume control at the source, and stereo RCA line-level inputs are pre-attached. Mounting holes are provided as is a 2.5 mm x 5.5 mm power jack for quick connection. Screw-down phoenix-type terminals are included for quick speaker wire connection.

Features:
• Class D amplifier topology featuring TDA7492 amplifier IC
• Heatsink with attached fan
• Pre-drilled mounting holes
• Over-temperature protection circuit
• Click and pop noise suppression
• Phoenix-type speaker terminals
• Line-level RCA input

Specifications:
• Power output (w/ 24 VDC power supply): 50W x 2 (6 ohms, THD 10%), 40W x 2 (8 ohms, THD 10%), 25W x 2 (6 ohms, THD 0.05%), 20W x 2 (8 ohms, THD 0.1%)
• Frequency response: 20 to 20,000 Hz (±3 dB)
• Minimum impedance: 4 ohms
• Recommended power supply: 14 to 27 VDC, 6A regulated
• Fixed gain settings: 25.6 dB, 31.6 dB, 35.1 dB, 37.6 dB
• Power input jack: 2.5 x 5.5 mm, center-positive
• Dimensions: 4.8" L x 3.6" W x 1.4" H



Product Specifications
  • Power Output (RMS Per Channel @ 8 ohms)20 Watts
  • Special FeaturesBoard Only Module
2x50W TDA7492 Class-D Amplifier Board
  • BrandParts Express
  • ModelAA-AB32174
  • Part Number320-301
  • UPC844632096679
  • Product CategoryHome Audio Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (10 Reviews)
  • Weight0.6 lbs.
  • California Prop 65

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

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Reviews

2x50W TDA7492 Class-D Amplifier Board
2x50W TDA7492 Class-D Amplifier Board is rated 4.5 out of 5 by 10.
Rated 5 out of 5 by from Great board and featuresMet all expectations, a nice little amplifier board. I have not been able to test for actual output but so far it is not lacking.
Date published: 2014-06-18
Rated 3 out of 5 by from stoped workingIt was a great amp. I had it for about a year and it just stopped working one day. Cant seem to figure out whats wrong with it. This is the second amp that stopped working that i bought from this site.
Date published: 2014-04-30
Rated 4 out of 5 by from Great AmplifierI bought this because the amplifier in my Altec lansing stopped working. I analyzed a lot before purchase as to which watt will suit my need. The amplifier is very good quality built. I use multiple speakers to play a single source. A volume control for my requirement was must. I assembled all the stuff and used old IBM laptop power supply 16v 3.5A. The sound is great and is exactly what I wanted. Parts express has the best prices. Looking for a nice subwoofer.
Date published: 2013-12-07
Rated 5 out of 5 by from Nice find.A nice quality amp for the price. Have it hooked up to 2 Book shelf speakers built with components bought from PE also. Powered by a 18.5V 3.5A laptop power supply.Nice upgrade from an old Teac passed down.Pic -->
Date published: 2013-09-04
Rated 4 out of 5 by from What a find this was!I bought this amp for an outdoor ipad music setup to play music at a wedding. I did not think an amp at this cost would work very well but I gave it a shot. It totally surprised me with power and quality. I used a Sony laptop power adapter with 19v and two HiVi F5 5" Bass/Midrange part #297-435 and a passive sub and they sound great. I also added theBT-1A Bluetooth Receiver Module Part # 320-353 to use them wirelessly with the ipad. O I also was able to use this setup as a pa system for the wedding. I cant wait to get more.
Date published: 2013-09-04
Rated 5 out of 5 by from Love this amp.I bought this to power a set of "shop speakers" but it never left my desk. I hooked it up to a set of home built computer speakers just to hear what it sounded like. I liked it so much I decided to leave it on my desk. I had a hard time finding a tip locally for the power supply I am using (19v from an old laptop, I removed the old tip and soldered on a new one). I am going to eventually build the "shop speakers" and put this amp to proper use...... Someday.
Date published: 2013-06-17

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
2x50W TDA7492 Class-D Amplifier Board

What would be the best recommended power supply, sold here, to use with this amp? 

Asked by: CrisR
I would recommend the power supply below.http://www.parts-express.com/24-vdc-6a-145w-regulated-switching-power-supply--320-314
Answered by: MattP
Date published: 2014-07-08

How much power should I expect at 4ohm? All the ratings are for 6&8ohm loads. I know the IC,TDA7492 can handle 4load b/c it says n the datasheet an also n the description above. It said for 4ohm not to go above 22v so with that psu what rms power I get?

Asked by: BigBob
Though not stated specifically, I do find it a reasonable assumption that the manufacturer does not recommend a 4-ohm speaker load. There are other considerations beyond what the output IC is rated for in and of itself. For example, a larger heat sink and fan may be necessary for 4-ohm operation at high power.
Answered by: Eric Chandler
Date published: 2014-06-03

I purchased this amplifier, but no instruction manual was included.  I am not sure how to set the jumper settings for gain?  Please let me know where I can download the manual for this amplifier.  Thank you.

Asked by: Phil010246
http://www.parts-express.com/pedocs/manuals/320-301-parts-express-manual.pdfAny time you need a manual or specs. or anything like that for an item on PE,just look at the right side of the page right underneath where it has the price and "add to cart" and all that it says "Manuals/Resources" and it will list links for manuals,if the item has one,and any other kind of info or schematics and stuff like that for that item. Its easy to overlook,I've done it myself but now you know where to look and if its not there you can email PE and see if they can point you in the right direction or there is always Google!
Answered by: BigBob
Date published: 2014-05-27

Any way to power this with a battery? Ultrafire in Series?

Asked by: shayd
The most practical way to power this amplifier and get the most from it will be with two 12V sealed lead acid batteries in series that are 5 mA or greater.
Answered by: MattP
Date published: 2014-05-14

I'm repurposing a 1940's table top wood radio (11x11x19) into a blue tooth speaker system. I have gutted out the radio completely and would like to know the best way to set this project up with speakers, amp and blue tooth capabilities. please help! TY!

Asked by: Saber1
Please call or email our tech support for further help with this matter, 800-338-0531 x1 or tech@parts-express.com.
Answered by: MattP
Date published: 2014-03-31

Thinking about using one side of this wee amp as a Power section in a small lightweight guitar amp. Would be driving it with a Soldano SP77 pre amp...not sure about the input levels to the TDA7492. Also. would it drive a 12'' 8 ohm without burning up?

Asked by: Haggis
The input sensitivity is from 220mV to 910 mV depending on the gain settings which are adjustable on the amplifier. This will drive a 12" 8 ohm speaker without a problem.
Answered by: MattP
Date published: 2014-03-24

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