24 VDC 14.6A 350W Regulated Switching Power Supply

24 VDC 14.6A 350W Regulated Switching Power Supply

Brand:| Model: PS-SP11154
This 24 VDC, 14.6A regulated power supply is recommended for 2 x 100 watt and 4 x 100 watt amp boards. UL recognized design.
  • High-current switching DC power supply
  • Regulated and adjustable DC output: 21.6 to 28.8V
  • Fan cooled, metal case, terminal block input
  • Comprehensive circuit protection and UL recognized
  • Input/output cables included
  • Switch selectable 110V/220V input
Part # 
Weight: 2.45 lbs.  
List Price$74.99
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Buy 4-up$49.99
Part # 320-316
Qty:  EA
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Product Details

24 VDC 14.6A 350W Regulated Switching Power Supply

This beast of a power supply is ideally suited for use with DIY amplifier projects. The regulated 24 VDC, 14.6A design is capable of 350W of regulated output. Perfect for 2 x 100 watt and 4 x 100 watt amp boards, the switching frequency is fixed at 25 kHz. The cooling fan has on/off/auto control, and the compact size reduces weight.

Specifications: • Output voltage: 21.6~28.8V (adjustable), 0 to 14.6A • Input power requirements: 100~120 VAC/6.5A or 200~240 VAC/4.0A (switch selectable), 50/60 Hz • Connection: Terminal block • Efficiency: 81% • Protection: Short circuit, overload, overvoltage, over temperature • DC adjustment range: ±10% rated output voltage • Dimensions (mm): 215 L x 115 W x 50 H • UL recognized design.

24 VDC 14.6A 350W Regulated Switching Power Supply
  • BrandParts Express
  • ModelPS-SP11154
  • Part Number320-316
  • UPC844632088162
  • Product CategoryPower Supplies
  • Unit of MeasureEA
  • Product Rating
    (7 Reviews)
  • Weight2.45 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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24 VDC 14.6A 350W Regulated Switching Power Supply
24 VDC 14.6A 350W Regulated Switching Power Supply is rated 4.1429 out of 5 by 7.
Rated 3 out of 5 by from Maybe it good for their amps but not much else.This unit is a Mean-Well manufactured power supply but it is a old model that does not perform very well in high load situations. I used it to power 24 volt LED lighting and it had was not able to keep a 24 volt output, even at 50% duty. I replaced it with a new series of Mean-Well power supplies and everything works great now. My suggestion is that they might be good for the sure amps, but not for much else.
Date published: 2010-10-11
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Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
24 VDC 14.6A 350W Regulated Switching Power Supply

I want to run the 100x4 amp. Will this psu pull the 14.6 amps all the time. Or just what the amp needs. I have a 20 amp fuse in my buiding. +other electronic things Will it trip. 

Asked by: Beanbo
This will only draw the current that the amplifier needs.
Answered by: MattP
Date published: 2014-09-17

will this power supply work in Australia

Asked by: jay86
Yes this will accept anything from 110-220 VAC input.
Answered by: MattP
Date published: 2014-07-15

What gauge AC power cord should be used? would an 18 gauge be acceptable to use? 

Asked by: andysam
16 gauge is recommended for use with these power supplies. If the length of the cable run is only a few inches, 18 gauge will be fine.
Answered by: MattP
Date published: 2014-04-10

Can this be used to charge to batteries in a series?

I am wanting to build a speaker project with one of the sure amps in it and run it off of two batteries connected in a series to get 24 volts. I Want to know if I could connect this directly to those batteries or if it would overcharge and ruin them or if anyone has any insight on how to do this...
Asked by: whatup
I am assuming you are using Lead Acid Batteries?Charging separate batteries in series requires much more circuitry than just hooking up a power supply, and can be dangerous if attempted. Voltage differences between the two and the large amount of current available from this ps will lead to gassing and various other nasty things.There are lot of things you can do though, but it all depends on your application.Do you want to use the amp while charging? I suggest finding a single 24 volt lead acid battery and 'smart' switching low noise charger.Don't mind charging between uses? Charge each battery separately or charge them in parallel with a 12 volt 'smart' charger.
Answered by: JDoyner
Date published: 2013-01-29

Can the filtration of this supply be improved by adding capacitors across the output?

If so, how much capacitance? and can you point me to the right ones? Its going to power a Sure board amplifier.
Asked by: jhidi
That could raise voltage amplitude creating component failure.Not recomended. You will find this unit fine out of the box.
Answered by: Zobadar
Date published: 2013-01-11

Is the case grounded to earth (AC Mains Ground)

I was wondering cause I was planning on putting the sure 6X100w amp in there and grounding it to the project box, or shall i say boxes, screwed together lidless in a sealed clam shell configeration. In other words, no bottom pannels just to of these (http://www.parts-express.com/pe/pshowdetl.cfm?)&Partnumber=320-830)screwed together to make a seal.The Top one will house this PSU, and the bottom; the ampI know this question goes of topic a bit, but I DO NOT want the ground of the DC in the amp making contact with the PSU's Mains Ground.
Asked by: Wolf Punch
Your plan is very unsafe and could KILL YOU!!!! If a wire breaks and touches your box, then you touch it, your body will be a grounding rod. As little as 50mA can kill you!!Your 'clam shell' box should be properly connected to earth ground. Drill hole, sand to shiny metal and attach ground to the case securely.I am assuming you are worried about ground loop noise and switching supply noise. Your idea to keep amp and power supply(ps) isolated is good, just the wrong away around.Instead of trying to isolate the earth ground from the case and making the death amp, isolate your amp and connectors from the case. They sell plastic washers bolts, stand offs, etc. for you to use. You could also mount the amp board to an insulating board and then mount the combo to your case. Also insure that your terminal inputs and outputs are isolated from the case with grommets or a separate no conductive mounting plate.As a side note, I suggest that you keep researching, asking questions, join forums, and seek professional input to your design. The best audio does not come from high wattage, efficient speakers, or expensive gear. It comes from great design. Best of luck.
Answered by: Doyne5
Date published: 2012-12-05

How do I safely supply power to the amp?

I received this amp and it includes a power cord. The amp has three inputs, a "ground," an "N," and an "L." The cord only has two wires, so is it safe to assume they go to the "N" and "L" outputs? Is it okay for the ground to not be used?Also, their advertised "120/240v switch" actually came as a 115/230v switch. Anyway, it came initially on the 230v setting. Is this correct or should I move it to the 115 volt setting since the typical residential home is running ~120v through the walls?Thanks,Adam
Asked by: Abrodt
This is not an Amp. It is an AC power supply to convert house current to operate DC devices.. N ans L are not outputs they are AC inputs. I suggest you call parts express to make sure you better understand.
Answered by: Power2Choose
Date published: 2013-05-25

can any one please elaborate all the connections o a circuit board?

Asked by: jagb
This unit has many great functions that are configured by a combination of the front panel and how you wire the rear terminal block. It is a stable regulated power supply at the specified output.The unit ships with proper wiring configs for the desired features and the I/O you desire.If you desire to know if it will meet you needs, call PE tech. The varios options are too varied to provide in this area.
Answered by: Nitnub
Date published: 2012-05-31

can I use 2 of these in series to get a 48VDC supply?

Asked by: calicchio
This would probably work. This power supply is a switching power supply, and in general switching power supplies can usually be connected in series. But, I've never used this particular power supply, so I can't say anything for sure.If you do decide to try it then one VERY important thing to make sure of before connecting them in series is to remove the ground prong from the plug of the supply that is supplying the upper voltage range. If you don't do this then the supply that supplies the lower voltage range will get shorted through the ground prong of the 2nd supply.Please note that connecting switching power supplies in series doesn't always work, and can sometimes lead to destructive results, so doing so can be risky. If you're going to do this then read up on the subject some more because there are other details you'll need to know (a general understanding of how switching power supplies work would help). If you don't know much about electronics in general then I would recommend not trying connecting these supplies in series.
Answered by: eboyer
Date published: 2013-01-28

How would I wire this up for one of the Sure Amps?

Asked by: Joe Bob
Looking at this power supply from the end, your AC connections will be on the far right. Use one of the V+ terminals to the "VCC" on the Sure board, and one of the V- terminals to the "GND" on the Sure board.
Answered by: RussR
Date published: 2012-05-06

does PE carry a 30 vdc power supply to get the most out of the sure 4 ch 320-302?

Asked by: jarod
Answered by: digitalhaven 53
Date published: 2014-07-07

Does it cause amp interference

I was thinking about placing this in a project box close to the sure 4 x 100 amp but wasn't sure if this would cause unwanted noise through my speakers... Thanks!
Asked by: swimboy172
I can't say for sure because I don't own this power supply, but I doubt you'd have problems. This power supply is surrounded by a metal case, which should shield most/all interference. But, if there is interference nevertheless then just put a solid piece of metal between the power supply and the amp. Or, better yet, surround the amp by metal casing, then it won't get interference from anything.
Answered by: eboyer
Date published: 2012-11-26

How powerful would an inverter need to be to run this in a auto? Its actually a RV.

Asked by: sirjammer
The output power of the unit is rated at 350watts. Since it only has an 81% efficiency you would need an input power of at least 432.098 watts. To be safe I would go with a 500 watt power inverter or higher.If your going to be using this with a car it would be more efficient to just use a 12V amplifier because there would be less power loss without the rectifier. Speakers use DC voltage not AC. So in this case it would go from 12VDC car to 120VAC power inverter to 24VDC internal power supply with power loss along the way.
Answered by: VictorE
Date published: 2011-11-11

How much power (watts) does this PS draw at idle? (with a zero-current load)?

Does anyone know how much idle/standby current this PS will draw with no load being consumed? Thanks! -JT
Asked by: JTB3
Power = Voltage in volts times Current in Amps.At zero amps it'd ideally be zero watts. It it has an LED indicator light, you'll have a very low current draw. LED lights typically take 0.7 Volts to turn on.
Answered by: Challenger Owner
Date published: 2012-05-07

How quiet/noisy is this unit when the fan gets activated? Is the fan variable-speed (temp sensitive) or single-speed on/off?

In considering this PS for a DIY home theater power-amp setup. I'm concerned however that the fan might be noisy when it gets activated under load. Is the fan variable-speed (temp controlled) or single-speed on/off? Has anyone listened critically for fan noise?
Asked by: JTB3
The fan is not variable, it is temperature controlled, switched on at 55° C, off at 50° C. Unfortunately, I do not have a noise specification on the unit in dB, however, we have not had any complaints to my knowledge regarding fan noise from these units.
Answered by: RussR
Date published: 2012-11-26

What is the best way to add an on/off switch when using the power supply in conjunction with the sure 2x100w amp?

Asked by: Jaredes
The power should always be switched between the wall and the power supply. There are a number of power inlet modules on the market which combine the IEC inlet and a switch, some also include fuses and filter circuits. I don't know too much about this power supply but if it is unfiltered, then you should use a filter module so that it's switching noise doesn't back feed onto the power grid and affect other equipment in your house.
Answered by: AlonzoTG
Date published: 2012-01-17

Would I need 2 of these?

would I need (2) of these in parallel for (2) 4 x 100 watt tk2050 amp boards? I'm trying to build a 7.1 amp for my pc. I doubt I'll be running it full blast much since I live in an apartment building but don't wanna try just 1 if it will fry. Either way it's still cheaper than buying a 500va toroid then building the regulator board.
Asked by: fuqthegovt
If you were running all 8 channels at full power with a solid sine wave or similar signal, then you would certainly be pushing beyond the limits of this power supply. However, under normal moderate listening conditions, you should be able to power your two boards with only one of this power supply, no problem.
Answered by: RussR
Date published: 2012-11-26

Would it be possible to use this in a car?

Was going to try and use this and the Sure 4x100 amp instead of a stock amp, but not 100% sure it will be compatible with a car powering it.
Asked by: PhelanX
This power supply requires 110/220 VAC input, so it would not work in a vehicle without a high power inverter.The Sure amplifiers should work just fine in a car audio environment powered off of the battery, meaning no additional power supply would be needed.
Answered by: mikevv
Date published: 2013-01-01
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