The board is available from many suppliers in eBay and TaoBao. I purchased it from this TaoBao shop TAS5630 ´ó¹¦ÂÊÊý×Ö¹¦·Å°å£¨ºÀ»ª°æ£©.
The board is basically a clone of TI TAS5630 EVM. TI offers gerber files of this EVM. The price is RMB288, about US 48.00. This is much cheaper than the TI original EVM (US 399.00)!
Will performance be affected by the low price? I use my AP-S1 to make some tests. The board is powered by a linear supply of 40 V (unloaded). AP measurement BW is 22 Hz to 22 kHz with an additional 20 kHz LPF. Dummy load is 8 R.
Below is THD vs freq for 1 W, 10 W and 25 W. From the TI EVM user's guide, you can see similar test data shown in Fig. 8. The figure is shown below for reference.
From this test, the TaoBao board is performing as good as the original TI board. Measurement filters causes THD drop from about 7 kHz due to suppression of 3rd and higher harmonics.
The board is basically a clone of TI TAS5630 EVM. TI offers gerber files of this EVM. The price is RMB288, about US 48.00. This is much cheaper than the TI original EVM (US 399.00)!
Will performance be affected by the low price? I use my AP-S1 to make some tests. The board is powered by a linear supply of 40 V (unloaded). AP measurement BW is 22 Hz to 22 kHz with an additional 20 kHz LPF. Dummy load is 8 R.
Below is THD vs freq for 1 W, 10 W and 25 W. From the TI EVM user's guide, you can see similar test data shown in Fig. 8. The figure is shown below for reference.
From this test, the TaoBao board is performing as good as the original TI board. Measurement filters causes THD drop from about 7 kHz due to suppression of 3rd and higher harmonics.
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Hi,
I own a TAS5360 mono board from Sure Electronics and a little different from TaoBoa. I did not make any measurements from this board. I use this board to drive my woofers.
I notice you from your measurements, at high power outputs the low frequency response drops off, it is a little concern, similarly at different loads, the high freq. response rises, also not good.
I own a TAS5360 mono board from Sure Electronics and a little different from TaoBoa. I did not make any measurements from this board. I use this board to drive my woofers.
I notice you from your measurements, at high power outputs the low frequency response drops off, it is a little concern, similarly at different loads, the high freq. response rises, also not good.
THD vs Output W and Freq (revised)
I forgot to bypass the current limit resistor in my last measurement. It caused THD rise in the low freq. for 25 W into 8 R as depicted in the above graph. Sorry for my careless. I redo the measurement today with the resistor bypassed. New data is shown below together with THD vs output power for 8 R load.
I forgot to bypass the current limit resistor in my last measurement. It caused THD rise in the low freq. for 25 W into 8 R as depicted in the above graph. Sorry for my careless. I redo the measurement today with the resistor bypassed. New data is shown below together with THD vs output power for 8 R load.
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Hi,
Do you see severe roll off in the low-freq. region? The board has 10 uF coupling caps in inputs. I measured roll off due to this high-pass effect (-0.2 dB at 20 Hz).
Do you see severe roll off in the low-freq. region? The board has 10 uF coupling caps in inputs. I measured roll off due to this high-pass effect (-0.2 dB at 20 Hz).
What I mean is look at your 1st post, 2nd image, the red curve at high power i.e. 200W output, it starts to roll off at bass region and not so at low power output shown on the same the image?
I guess you mean distortion rolloff lower freq at higher power? Y-axis = THD% not SPL ? Or do you mean something else?
2nd graph of post #1 was extracted from TI EVM user's guide for reference/comparison. You can download it http://www.ti.com/lit/ug/slau287a/slau287a.pdf
I have frequency response curve for 50 W into 4R and 8R as depicted below.
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Why does filter start at 2000hz? L=15uH ? Maybe little less with 50w passing? And what is C? At 1w inductor maybe higher value.
Next question is, is filter enough with 8 ohm load, frequency respons is perfect, but is switchingfrequency weakened enough, and if SMPS is used, remaining noise from that switching-frequency can also maybe consume power? I think I read somewhere that if input contains much high frequencies (20kHz) and outputfilter is "light" higher amounts of power could be going to switching frequency, in some cases then even cause tripping protectioncircuit? But again frequency respons looks very good🙂 When hooked to 4 ohm speaker and little impedance rise with higher frequency this is real good🙂 Distortion also too low to hear I think
Next question is, is filter enough with 8 ohm load, frequency respons is perfect, but is switchingfrequency weakened enough, and if SMPS is used, remaining noise from that switching-frequency can also maybe consume power? I think I read somewhere that if input contains much high frequencies (20kHz) and outputfilter is "light" higher amounts of power could be going to switching frequency, in some cases then even cause tripping protectioncircuit? But again frequency respons looks very good🙂 When hooked to 4 ohm speaker and little impedance rise with higher frequency this is real good🙂 Distortion also too low to hear I think
No sure I understand your question regarding 20kHz. The output inductors are 10 uH (by measurement). The measured response is pretty much identical close to SPICE simulation. Please see figure below (red: 8R, blue: 4R load).
Switching freq. is 384 kHz. It is suppressed by 33 dB for both 4 and 8 Ohm.
Switching freq. is 384 kHz. It is suppressed by 33 dB for both 4 and 8 Ohm.
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Hello,
Sorry if I reopen an old thread,
But I also bought this card and would like your opinion.
I'm going to make an electric bass amplifier,
The card is powered by a 48v and 12.5A switching power supply, and piloted two woofers Celestion BL-10, 10 ", 100W RMS, 8 Ohm.
Everything works well, but frequencies below 100 Hz seem to be very attenuated, and if i increase the bass on the preamplifier equalizer, the sound goes out distorted.
some idea?
I read that some capacitors on the input rail could make a low frequency filter, but I would not know how to modify the card ...
... and this one?
TAS5630 Subwoofer 600W D Type OPA1632DR TL072 Amplifier
what do you think?
Can it throw out 600W on 4 Ohms?
Should be on 2 Ohms ...
thank you all.
Sorry if I reopen an old thread,
But I also bought this card and would like your opinion.
I'm going to make an electric bass amplifier,
The card is powered by a 48v and 12.5A switching power supply, and piloted two woofers Celestion BL-10, 10 ", 100W RMS, 8 Ohm.
Everything works well, but frequencies below 100 Hz seem to be very attenuated, and if i increase the bass on the preamplifier equalizer, the sound goes out distorted.
some idea?
I read that some capacitors on the input rail could make a low frequency filter, but I would not know how to modify the card ...
... and this one?
TAS5630 Subwoofer 600W D Type OPA1632DR TL072 Amplifier
what do you think?
Can it throw out 600W on 4 Ohms?
Should be on 2 Ohms ...
thank you all.
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