Packaging Details
- Unit Type: piece
- Package Weight: 0.200kg (0.44lb.)
- Package Size: 30cm x 20cm x 10cm (11.81in x 7.87in x 3.94in)
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Tips:This link is scattered kit , see friends Detailing third ~ DIY Welding hands !
1 .DIYSuite welding, production, requires that you have at hand the appropriate measurement tools such as welding and installation of iron , multimeter , etc., and have a certain electronic technology and ability to successfully install and use only , we guarantee the package components are brand new original . If you do not have these conditions, please carefully shot !DIYThere unsuccessful risk !Electronic components in the front of the tin, cut legs if quality problems, can return, tin , cut feet, after welding damaged or production is not successful , we do not offer refunds or exchanges ,Thank you for your understanding and support !Because amplifier kit program was developed for the audio plant , rather there is an agreement , the circuit diagram can not be outsourced , not all programs provide schematics , please Amoy Friends of understanding !
2.Parts :Delivery of spare parts is an empty plate and a bag equipped with on-board components ,Excluding others such as heat sinks and power or speakers, and other accessories knob.NeedDIYPicture the same friends with yourself and then welding the components correspond to the insertion , after the completion of welding as shown ( some components due to quality improvement needs and different batches , the appearance will be slightly different ) .
TDA7294 power amplifier board 100W 1.0 subwoofer preamp parts Specials 5532
Product description:
TDA7294 subwoofer ( parts ) amplifier kit circuit using original STMicroelectronics (ST brand ) TDA7294 audio power amplifier , low-frequency processing circuit using the Texas Instruments (TI brand ) NE5532, the maximum output power of the circuit up to 100W. PCB layout is reasonable , no noise , high cost .
The circuit according to the preferences of DIY friends and friends of existing speaker cabinet to adjust the bass frequency and output frequency , as long as the replacement of circuit capacity C5 * , you can change the output frequency , capacitance from 103,223,323 , 473,683104Range selection , which is right for you to choose which frequency ~ ~ , you need full-frequency output , remove the C5 * like.( Note: If you like some of the lower frequencies , it can be replaced C4 original 224 474, R10OriginalReplace 22K 47K, as long as your subwoofer can withstand this frequency, otherwise not due to the impact of low frequency speaker bear appears primed to break the sound ! ! ! )Design is very user-friendly, to meet the different needs of friends , board compact, very flexible , can be used alone as 1.0 power amplifier , can also be combined into two panels power 2.0 applications, but also can convert your existing 2.0 amp upgrade to power 2.1 subwoofer Amplifier .
Power supply transformer Range: AC dual 11V ~ 25V, dual power DC power supply range: plus or minus 35V. ( Note: The DC power supply to use V + GND V- three lines of output DC power supply can not use a single power connection , such as a laptop is a single power supply ). Power Min less than 50W,The larger the input power supply , the amplifier output power more feet, equipped with a corresponding need for greater fin oh ~ ~
Note : When connecting dual power transformer input , please do note the correct access to three lines , otherwise the electricity will burn IC.
This kit PCB with high-grade double- glass panels , oil solder mask , PTH HASL process , quality visible. Panel indicate the original name and parameters , ideal for DIY welding friends hands oh ~ ~
PCB Size : about 53MM * 91MM
49 yuan for the spare parts price ( not including the radiator , please reprovision ) , shipping is an empty board and the board is equipped with all the components needed to understand your own electronic technology, and has some ability to complete the installation oh !
Welding board
PCB board has components logo , just insert the board to identify the components correspond to the front ( there are literally ) the appropriate location , and then in the opposite weld pin to the board .After welding is completed ,Please give sufficient volume IC TDA7294 heatsink installation and proper use of insulation particles , silicone film insulate . In the silicone film on both sides and the back TDA7294 IC good thermal coated silicon grease before power test machine , due to the negative power supply IC metal parts , remember ! Otherwise amplifier IC \'s easy to burn out ! !
This product is a result of parts, welding can be completed , work with your hands the ability to have a direct relationship , without providing aftermarket parts installed , please understand , if you need to install the tutorial , please contact customer service Want , thank you !
If you are uncomfortable welding yourself , please move the finished piece :
item.taobao.com/item.htm?id=10736790395
Complete the welding of the board
Connectivity applications , please refer to :
Tips
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