Hello,
I was wondering, what amp board should I use with a record player?
Do I need also a pre-amp?
LM1875T Dual Channal 30W 30W 2 0 Stereo Audio Power Amplifier Board Module | eBay
Will this work? If not, what budget pre-amp should I get to use with this amp board?
Thanks
I was wondering, what amp board should I use with a record player?
Do I need also a pre-amp?
LM1875T Dual Channal 30W 30W 2 0 Stereo Audio Power Amplifier Board Module | eBay
Will this work? If not, what budget pre-amp should I get to use with this amp board?
Thanks
Oh woaw! LM1875T ... I know 1876T exists but this...?
It should be more like 1875F (FAKE) But absolutely I might even work.
It mainly depends on the recordplayers output voltage. If its near 2V RMS it should be fine. But I really havent seen any that has it so high. Then yes, you do need a preamp
It should be more like 1875F (FAKE) But absolutely I might even work.
It mainly depends on the recordplayers output voltage. If its near 2V RMS it should be fine. But I really havent seen any that has it so high. Then yes, you do need a preamp
i'm not sure you need pre-amp.
if it ain't as loud as it should be, you can increase the gain .
so for now just build the reference design,
try it.
then try it with your... say computer as a source.
if it louder on your computer than on the record player, then adjust the gain setting resistors a bit. you can download the datasheet of the chip, gain calculation is found within it.
if it ain't as loud as it should be, you can increase the gain .
so for now just build the reference design,
try it.
then try it with your... say computer as a source.
if it louder on your computer than on the record player, then adjust the gain setting resistors a bit. you can download the datasheet of the chip, gain calculation is found within it.
Bogus! The LM1875T is made by TI. You can convince yourself of this pretty easily by looking at the data sheet and product page available here: LM1875 | Mid/High-Power Class D Amplifiers | Audio | Description & parametrics
Now, whether the eBay kit comes with a real or a fake LM1875 is anybody's guess. If, on the other hand, you buy the parts from the TI distributors (Mouser, Digikey, Newark, et al.) you're 99.9999999 % certain that you'll get a real part.
The LM1875 is a fine little mid-power IC amplifier. Nothing wrong with it.
To use any power amp with a record player (aka turntable), you'll need a RIAA preamp (aka phono preamp).
Tom
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I would not recommend an amplifier from China.
Too many turn out to be fakes and/or using fake components.
30 watt is plenty. even 15 is plenty.
2x10 watt is far more than enough for a livingroom even if you like to listen to loud music. pretty loud music.
tda7294 is by far an overkill for 99% of home applications.
but, nothing stopping anyone from going fo it 😀
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