I did a cursory search on this transformer, but could find nothing. If you don’t know the specs, you could find the turns ratio, but I’m not aware of any way to determine the power handling without melting it (perhaps some more experienced member here could help). Without this info, it would be difficult to determine if this transformer has enough capacity to safely use in whatever amp you choose.
In order to help you, we’ll need a bit more info, like how much power you’re looking for, the impedance of your speakers, what your experience level is, and around how much you’re willing to spend. The more info you can provide the better.
In order to help you, we’ll need a bit more info, like how much power you’re looking for, the impedance of your speakers, what your experience level is, and around how much you’re willing to spend. The more info you can provide the better.
Well its possible to measure the winding resistances, inject a low level signal on the primary such as with an audio oscillator, and thus measure the turns ratios.
The mass determines the rough power handling.
What you can't be sure of is whether its mains rated, although if the ratios make sense with that 32V and 12V marking there's little doubt its a mains transformer (and you'll know the primary voltages).
The relative power handling of secondaries can be determined from the turn ratios and resistance ratios.
Any reason you didn't show the wires?
The mass determines the rough power handling.
What you can't be sure of is whether its mains rated, although if the ratios make sense with that 32V and 12V marking there's little doubt its a mains transformer (and you'll know the primary voltages).
The relative power handling of secondaries can be determined from the turn ratios and resistance ratios.
Any reason you didn't show the wires?
I going to pass on that tranny. I'm in unknown territory as it is. Maybe I'll start with a inexpensive kit and learn from that.
Your approach is completely dependent upon how much power per channel you'd like to achieve. You didnt mention that in your OP. Many "lightweight" class D amps operate from 12 - 24 VDC, which is a fairly easy voltage to find a power supply for, as it falls in the range of many widely available laptop bricks.
The heavy weight class D amps of course require higher voltage. So let us know what power output you'd like the amplifier to have. I'm sure with that stake set, folks 'round here will have lots of recommendations.
Beyond that, there's also the consideration of analog vs digital input. Some class D amps can be had with I2S inputs, which means the music stays digital all the way up until the speaker terminals. The easiest example of this is a Raspberry Pi with a HifiBerry AMP2 - sort of attach half A to half B affair and then after flashing an SD card with something like Moode player OS, it works. ~$100 for ~20W per channel that is. Or try the Zoudio amp, which you can connect to via BT from your phone or W10 system. Still in the < 50W realm, for ~$100.
Both will need a power supply - of good quality.
So besides the WPC, you can choose if you want RCA line level inputs, or an all digital system when considering class D.
The heavy weight class D amps of course require higher voltage. So let us know what power output you'd like the amplifier to have. I'm sure with that stake set, folks 'round here will have lots of recommendations.
Beyond that, there's also the consideration of analog vs digital input. Some class D amps can be had with I2S inputs, which means the music stays digital all the way up until the speaker terminals. The easiest example of this is a Raspberry Pi with a HifiBerry AMP2 - sort of attach half A to half B affair and then after flashing an SD card with something like Moode player OS, it works. ~$100 for ~20W per channel that is. Or try the Zoudio amp, which you can connect to via BT from your phone or W10 system. Still in the < 50W realm, for ~$100.
Both will need a power supply - of good quality.
So besides the WPC, you can choose if you want RCA line level inputs, or an all digital system when considering class D.
Why not try the TDA8932 Mono boards off ebay?
The two boards will set you back $7 and all you need do is add an Alps Pot and a couple of 19v laptop bricks. Again a large thread on mods, although I kept to stock and just added a 2000uF cap on the power input.
The SQ is very acceptable - in fact I built my amp to listen to the radio via Moode and have ended up ditching my NAD amp and using the TDA8932 as my main amp.
The two boards will set you back $7 and all you need do is add an Alps Pot and a couple of 19v laptop bricks. Again a large thread on mods, although I kept to stock and just added a 2000uF cap on the power input.
The SQ is very acceptable - in fact I built my amp to listen to the radio via Moode and have ended up ditching my NAD amp and using the TDA8932 as my main amp.
Yes - they are the boards. Shop around - you should get them even cheaper from China.
Main thread is here Fasten seat belts. TDA8932 pessimistic review.