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wondom bru5 pc dsp configurable TPA 3255 "300w x 2" mini amplifier

Roland68 said:
In fact, the TPA3116 can operate at up to 26V by default, but 24V is more common for power supplies. The wattage is irrelevant as long as it's large enough.

However, this thread is about the BRU5 with the TPA3255, which, as stated in the thread title, can operate at up to 48V.
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The TPA 3116 I used with a 12V 1A (don't laugh) it got plenty enough for living room .
The BRU 5 I only got last friday, hooked it up to a 20V FSP 6,35A, and looks fine. Both the 3116 and the Bru5 is not even warm with these PSU-s
But with 48V it gets hot (from other members) I seen most user use it with a 36 V. I also planned to use 36V Meanwell 150W (for 2 BRU5 in a case) maybe even the JAB5 will share that enclosure.
 
HalasKYO said:
For the BRU5 wondwom states 48V, with which it gets toasty. In the forum the coservative ax is 36V. what would be the optimal for the TPA3255? Ain't 20-24 V enough if only sub 10W is needed from them ? (maybe a puffer condensator between PSU and amp ~50-60V ...)
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Yes, that is right, like a truck, Just because its max load capacity is 3,000 kg, that doesn't mean it's a good idea to load it to the absolute limit every single time. By running it slightly under capacity - say, at 2,900 kg - you put far less stress on the engine, brakes, and suspension. This approach ensures the truck runs reliably and, most importantly, significantly extends its service life by reducing wear and tear.

So, My view is Max 48V is suitable for the TPA3225, Max 26V is suitable for the TPA3116, follow this Max standard and slightly lower it according to your own needs.
 
scorlee said:
Yes, that is right, like a truck, Just because its max load capacity is 3,000 kg, that doesn't mean it's a good idea to load it to the absolute limit every single time. By running it slightly under capacity - say, at 2,900 kg - you put far less stress on the engine, brakes, and suspension. This approach ensures the truck runs reliably and, most importantly, significantly extends its service life by reducing wear and tear.

So, My view is Max 48V is suitable for the TPA3225, Max 26V is suitable for the TPA3116, follow this Max standard and slightly lower it according to your own needs.
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What do you think, can I run 2-3 BRU5 or JAB5 from a 20V supply , and if so do I need to puffer the input (add a condensator in paralell which exceeds the input voltage ) that should also help with bass delivery and filter some of the ripple from supply. (1 have 2 bru5 and 1 jab 5, that is why I ask), I will not use it on high power for sure.
 
Roland68 said:
In fact, the TPA3116 can operate at up to 26V by default, but 24V is more common for power supplies. The wattage is irrelevant as long as it's large enough.

However, this thread is about the BRU5 with the TPA3255, which, as stated in the thread title, can operate at up to 48V.
Click to expand...
Yes, you are right, I agree with you
 
So I made some measurements with the BRU5, with normal Hifi speaker, the sound is analytic and the noisefloor is OK. But with the Compression driver (without crossover as I planned to use the DSP for that)... well, a lot of hiss..
I must add an L-pad or series resistor to pull down the sensitivity of the CD , otherwise I must use a different amp.
Did anyone made some mod to the amp (reduce gain?) to lower the noisefloor ? Or is it jus a theory?
 
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