3e audio SY-DAP1002 Manuale - Pagina 14

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SY-DAPx002 UG
Q&A
Q
TPA3250 vs TPA3255 which one is better?
TPA3250 is better than TPA3255 regarding THD,Noise and Efficiency,TPA3250 design is
smaller and more compacted, the advance of TPA3255 is only can output higher power,
A
but has higher thermal lose also.
they are the same level on audio quality point of view.
Q
Why use DSP in this product?
In the past many people used to change or upgrade the OP-Amp or analog circuit which
limited to achieve a good implementation on a whole audio system, with a powerful DSP
A
you can make many things more wonderful in digital world, for example you can design
your own custom EQ like High/low pass, crossover,bass,treble,loudness control,etc.
Just leave it as is if you don't want touch DSP (flat EQ).
Q
How can I access the DSP for design my own EQ
There is a USBi download connector that giving user directly connect to ADAU1701 DSP,all
you need to do is make your individual design and then download to on board
A
EEPROM,please note that MUST use our SigmaStudio design template(please get from our
website) for furtuer EQ design and modification.
Q
how is the OP-AMP performance, do we need change it?
the OP-AMP is OPA1602 sound plus series and performance is very good, but change OP-
A
AMP always fun of DIY.
Only Rev1.0 available and Rev1.1 change to other common part like NE5532.
Q
What is the voltage on amplifier power rail?
A
TPA3250 - 30V; TPA3255 - 37V,44V Max
Q
What DIY stuff can be done in this product?
We put many efforts to achieve this high quality customized design, for detail DIY please
refer to previous sections.
A
Please note that any other change is high risk damage the whole product and result in
invalid warranty
Q
What is cooling way ?
For SY-DAP1002, as it is lower power output and power dissipations, use internal bottom
side conductive to PCB surface and plus external heatsink.
A
For SY-DAP2002, as higher output power and power dissipations, beside using a larger
heatsink, an active cooling way by using a FAN to have fully thermal management.
Please note that there is a FAN noise(>20dB) when is it active trigger by sensor.
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Rev 1.0
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