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Amp Camp Amp - ACA
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Old Yesterday, 03:04 PM   #6091
futuromat is offline futuromat  Germany
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Join Date: Jul 2017
Location: Berlin, Germany
thx much! Dankeschön
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Old Yesterday, 08:33 PM   #6092
oc11 is offline oc11  United States
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Join Date: Jan 2004
Location: Missouri
Checked the datasheets for the Mean Well RS150-24 and the Mean Well GST120A-24 (the GST is included in the kit). The RS150 has a higher current rating of 6.5 A, a lower max ripple, and better voltage tolerance, line regulation, and load regulation specs than the GST. It also should run cooler because the enclosure is perforated metal, not a solid wall enclosure like the GST's. That said, the RS150-24 presents multiple installation options while the GST is a simple one output package which should be easier to handle for builders with little experience. Both PSUs appear very good. If the current provided by the PSU is not a major problem with ACA 1.6, there are 48v models available for both the GST and the RS150 Mean Well PSU lines for possible upgrades. Extreme Boky please let us know if or when you decide to up power your build just to see what happens. I would be interested in knowing is this is feasible.
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Old Today, 01:33 AM   #6093
rnjorge is offline rnjorge  Brazil
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Join Date: May 2016
Location: Campinas SP
I would be interested in knowing is this is feasible.
It is. I am powering my ACAs (1.5 ? Version) with one 24V 5A SMPS per channel placed inside the (somewhat larger) chassis with absolutely no noise.
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Old Today, 02:13 AM   #6094
RafaPolit is offline RafaPolit  Ecuador
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Join Date: Dec 2016
Location: Quito, Ecuador
Well, 24V x 2 (one per per channel) still results in 24V delivered to the ACA. A 48V would require some modifications... assuming the JFEts can even take that voltage, would JFEts and MOSFETs still be in their 'good region' when the circuit is BIASSED at 24V? (If not biased at half voltage there is asymmetry on the output, I think).

That is assuming you have enough heat dissipation to actually work without starting a fire!

I believe an experiment like this would have to be done by someone that really knows about circuits and stuff. I would not recommend a newby trying to double the voltage and expect more power! Please be careful!


Last edited by RafaPolit; Today at 02:16 AM.
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Old Today, 02:28 AM   #6095
oc11 is offline oc11  United States
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Join Date: Jan 2004
Location: Missouri
Rafa, you are correct of course. That person is not me either, and yes it may require larger heat sinks.
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