Hi guys,
I'm a newbie so please apologize for my ignorance🙄
I'd like to know if it's possible to limit up to 10 watt rms (at 4 ohm) the output of the tda2030.
In particular I'm reffering to this amp board:
TDA2030A Audio Power Amplifier Board Module Mono Stereo Amp Subwoofer DIY G4F7 | eBay
thank you very much in advance for your patience and for the kindness😉
best regards🙂
I'm a newbie so please apologize for my ignorance🙄
I'd like to know if it's possible to limit up to 10 watt rms (at 4 ohm) the output of the tda2030.
In particular I'm reffering to this amp board:
TDA2030A Audio Power Amplifier Board Module Mono Stereo Amp Subwoofer DIY G4F7 | eBay
thank you very much in advance for your patience and for the kindness😉
best regards🙂
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The supply voltage the amp runs on determines the max voltage swing the amp can deliver. Running the TDA2030 on a single 28 volt DC rail should get you close to 10 watts rms into 8 ohms.
Thank you Mooly for your kind reply!😉
The problem is that I need just 10 watt into 4 ohm: is that possible?
thank you again😉
The problem is that I need just 10 watt into 4 ohm: is that possible?
thank you again😉
On the datasheet that I have, there's Figure 3 which shows output power (at 0.5% distortion) vs supply voltage.
On the 4R load line, the 10W power corresponds to a total supply voltage of 24V (+/-12V if using two supplies).
On the 4R load line, the 10W power corresponds to a total supply voltage of 24V (+/-12V if using two supplies).
10 watts into 4 ohm would require an output voltage of 6.3v rms. That would mean running on around 20 volts DC to generate that.
6.3 multiplied by root 2 gives 8.9 volts peak or 17.8 volts peak to peak. Allow a little for losses and 20 volts should be about right.
(Its actually much better to have a bit of extra headroom rather than put strict limits on power output. No harm will come to a 10w speaker running off a 20 watt amp, but you might cause speaker damage by running it off a 10w amp that is clipping)
6.3 multiplied by root 2 gives 8.9 volts peak or 17.8 volts peak to peak. Allow a little for losses and 20 volts should be about right.
(Its actually much better to have a bit of extra headroom rather than put strict limits on power output. No harm will come to a 10w speaker running off a 20 watt amp, but you might cause speaker damage by running it off a 10w amp that is clipping)
ah Mooly, by the way: for the power supply I've a transformer with this features:
single phase secondary (I mean: only two cables on the secondary side)/ 19,5 volt/ 55 watt max/ 2,5 amp.
Well, waht do you think about this power supply?...Could I use it to feed two TDA2030 amp board (like the one in the link above)?
thank you for your kindness, Mooly!😉
single phase secondary (I mean: only two cables on the secondary side)/ 19,5 volt/ 55 watt max/ 2,5 amp.
Well, waht do you think about this power supply?...Could I use it to feed two TDA2030 amp board (like the one in the link above)?
thank you for your kindness, Mooly!😉
That transformer would give around 27 volts dc which is above what the board details recommend unless you change the capacitors for higher voltage ones.
A 2.5A secondary is under rated in theory (for two channels at maximum output) but in practice would probably OK for normal music.
A 2.5A secondary is under rated in theory (for two channels at maximum output) but in practice would probably OK for normal music.
You can use that transformer but then you will NOT meet your 10W into 4 ohm goal.
Is that OK with you?
Why do you think you need 10W into 4n ohm?
Please detail load/speaker and requirements.
Is that OK with you?
Why do you think you need 10W into 4n ohm?
Please detail load/speaker and requirements.
thank you guys for the precious support😉
The problem is that the speakers that I want to use with the TDA2030 amp board, can handle 18 watt max.😕🙄
Regards
The problem is that the speakers that I want to use with the TDA2030 amp board, can handle 18 watt max.😕🙄
Regards
Its really not a problem... a 20 or 30 watt amplifier is absolutely fine in practice.
Speaker Selection and Amplifier Power Ratings
Speaker Selection and Amplifier Power Ratings
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