In the review it's pretty clear that 48V/3A does better with 8ohm load and 32V/5A does better with 4ohm load.Sorry I'm a noob in this but wouldn't a 48 volt/3 amp PSU give lesser power than a 32 volt/5 amp PSU?
In the review it's pretty clear that 48V/3A does better with 8ohm load and 32V/5A does better with 4ohm load.Sorry I'm a noob in this but wouldn't a 48 volt/3 amp PSU give lesser power than a 32 volt/5 amp PSU?
I am leaning more towards the stock 32v 5a adapter now due to ease of use
You won't hear it. It's a non-issue except in a few special scenarios.But I hear there will be noise
Hi,
I am considering following options on power supplies. Could someone kindly offer advice on which one would make sense for me.
I am looking to drive either a jbl120 or jbl130 from a desktop. So volume output will not be much.
(1) Stock 32v 5a - considerably cheaper. But I hear there will be noise and can be bettered with a Meanwell smps.
(2) Meanwell lrs 350 24v 14.6A - I gather that it will have less noise but will require some diy and possibly troublesome to keep on desk with open chassis.
(3) Meanwell power brick gs220 24v 9.25A - Safe to use but expensive.
I would like to understand if the Meanwell power brick will enjoy the same low noise characteristics of the Meanwell lrs models. From comparing the spec sheet between these two I gather that the ripple & noise is very similar at 180m vp-p. Load regulation and line regulation are worse in the power brick. Will this make a difference to using Manwell power brick vs Meanwell Lrs?
Lastly at low volume levels for desktop usage does it really make a difference to go with the more expensive Meanwell power brick vs the stock power brick?
Thank you for your responses
Mine has a nasty mains hum which I put down to the crappy PSU that comes with it. I plugged my MP3 player into the input & it blew the MP3 player annoyingly. There is no DC standing on the input. I have yet to check it with an oscilloscope for AC.yes i have the same type of tube pre amp that i love. its the suca audio T1 tube buffer. ive seen some measurements from it and they actually dont mess with the signal in any bad way and do add some sound differences without ruining it. highly recommended and i will never unplug it unless i have super sensitive IEMs where the hum is slightly noticeable at high volume . would love an ASR review of those as well they all have the same board. it really does in an AB test change the sound even with different tubes, the tubes are run at close to 240 volts so its not just "fake" i hate to use the word "creamy" but its what comes to mind and its 100% A/B able no questions, whether its chinese magic or not its repeatable. To keep this on topic i cant wait to try it with these class D amps to see if i can create a little more fun even if its just an EQ.
@guddu
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Is there a bookshelf speaker recommendation for this amp in the 600.00 range? Maybe the ELAC DBR62
The ELAC DBR62 is likely the best possible choice. The Polk Reserve R200 and R100 are serious contenders. See https://www.audiosciencereview.com/...nd-measurements-a-really-nice-surprise.23502/, https://thenextweb.com/news/polk-reserve-r200-is-budget-hifi-greatness, and https://www.i-fidelity.net/testberichte/hifi/polk-reserve-r100/seite-5.html.
I am using the A07 with a pair of JBL Stage A130 speakers (https://www.audiosciencereview.com/forum/index.php?threads/jbl-stage-a130-review-speaker.18260/), which are great and cost half as much as the DBR62s (or even less, if you buy them at a discount).
Too bad I just missed a sale on the A130 for 180.00 a pair straight from JBL. It's odd how often I "just missed a sale" on things.
must be my guardian angel protecting me from stolen goods....It's a steal for 180 and should be illegal.
A question for those of you with the Mean Well LRS-350-48 - how is the fan noise?
I bought a "similar form" 48V 12.5A (off Amazon). It drives the amp nicely (or, if we are to be scientific about it, it gives "plenty of welly"!) but the fan noise is unacceptably loud. It's always on and gets louder under load. I may replace if with a bigger quiter fan or just go for the Mean Well if I can be sure it is okay.
I'm driving Elac UniFi 2.0 bookshelves with the A07. Initially, using the default PSU (32V 5A) I was hearing surprisingly harsh sound. No matter what settings I tried, I was getting terrible fatigue after even short listening periods. After seeing so much praise for this little amp I was pretty disappointed. Then I swapped the PSU for a Meanwell 48V 7.3A and all of the problems disappeared. Honestly I was shocked at the change. It sounded wonderful, non-fatiguing and balanced to my ears. My conclusion is that the ELACs were underpowered and distorting until I upgraded the PSU on the A07. I have no measurements. Just my ears and experience. So take it for what it is. Not Audio Science. My question for the Audio Scientists here is: Has anyone has actually measured the Wattage Output this amplifier is sending to speakers when it's PSU is 48V 7.3A? Cheers