<arossdotme>
both use the same TI audio power amplifier IC. they use different pre-amp IC’s
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<DocScrutinizer05>
arossdotme: wire to speaker terminals in first one look flimsy
<DocScrutinizer05>
second one looks way better design - the input are farther away from the speaker terminals and it seems they got the preamp directly behind the inpout jacks, not on other end of main PCB like first one
<DocScrutinizer05>
I'd go for second one for sure, even when it's 30 bucks more
<arossdotme>
ok.
<DocScrutinizer05>
however keep in mind you need a stable powerful 40V supply
<DocScrutinizer05>
(or 25V, or higher)
<arossdotme>
my dilemma was i like the case, connectors look more robust and easier too. and the vol pot was not on the same pcb. arr well i guess if i really want i can make my own case with the board only version of the 2rd one :)
<arossdotme>
yea the power supply issue.....
<arossdotme>
i have a 400w stepup dc-dc converter. i found it can give double the input voltage.
<arossdotme>
i also have a 100w boost converter too. that seams able to do 3x the input :). hmm.
<arossdotme>
its min in voltage is 3.somethingV wheres my 400w one is 8v
<arossdotme>
i heard that one can get multiable PSUs and wire the DC in seriels to get a bigger voltage :), dad said to make sure the dc ground is not connected mains earth.
<arossdotme>
or i would just by a mains one if i rally want.
<arossdotme>
my use for it it so power one 150w peak PA speaker i was given.
<arossdotme>
I assume the amp will be ok if one speaker is no connected ?
<arossdotme>
*(so i want around 75w constant). its a 8ohm speaker too.
<arossdotme>
which has the advantage of only needing 36V in i think it was. only a few £ bewteen the 300w mono TI and 300w 2x TI. hmm arrgh what to do?...
<arossdotme>
what do you think of the sure mono board?
<DocScrutinizer05>
the sure thing... well it has a fan. Though that makes sense, I don't really like fans
<DocScrutinizer05>
can't say much about it, except it's not even listing specs for 8Ohm load, which doesn't mean 8Ohm won't work, just that the supposed 300W for sure won't be available
<DocScrutinizer05>
it also doesn't list THD at a more reasonable operation point, like 200W. Despite this would be a way more relevant data. 10% THD are unbearable (except for max load, which you're not supposed to use on a regualr basis during everyday operation anyway)