Sure Electronics AA-AB32313 2x400

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jencelo

Member
Joined 2009
Pepe said:
I received my board today. It turns out they sent me a 32313 instead of the 32312 that I ordered.
Will contact them to get a refund for the price difference between the boards.
Looking forward to hear what board you get. Seems like it's a lottery.

Tomorrow comes the Mean Well HLG320H-36A I ordered from another supplier. Hopefully I'll find the time to try them next weekend together with a pre amp from Emblas Audio.
Click to expand...

Looks like we are fine with the board. It is the 32512 with board that has 32313 print on:)

How will you terminate your HLG-320H-36A? I have no idea:)
 
J

jencelo

Member
Joined 2009
Pepe said:
How will you terminate your HLG-320H-36A? I have no idea:)
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Bare cable in to the screw terminals of the amp board.[/QUOTE]

What about the other end? I think both ends are bare. Just a regular plug?

Something like the attached photo?
 

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J

jencelo

Member
Joined 2009
ICG

ICG

Disabled Account
Joined 2007
jencelo said:
Got everything today! I am about the connect the HLG-320-36A but not sure what goes where on the amp. HLG red (+) & black (-). In the manual (here:https://www.parts-express.com/pedoc...32512-2x500w-audio-amplifier-board-manual.pdf) there is VCC & GND. No + or - signs (J16) but in the picture the red goes to GND and black goes to VCC. Is this correct? Do not want to burn the amp the first day :)
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The manual is not correct.

VCC is + (usually red)
GND is - (black/ground)
 
J

jencelo

Member
Joined 2009
ICG said:
Well, everyone makes mistakes. Yes, red is usually +. But to be sure, measure the voltage.
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I can't blame you. You assume I am on this forum and have tools for things but I don't:) I agree I should have at least some stuff.

Now, you got me wonder. What if they mark the VCC & GND wrong:) I don't want to hook it up now unless I have someone with this board tell me what is what:)
 
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ICG

ICG

Disabled Account
Joined 2007
jencelo said:
You assume I am on this forum and have tools for things but I don't:) I agree I should have at least some stuff.
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Well, a multimeter is a very basic and important tool and you can get one for 10 bucks - so it's not a cost issue since it will save you a lot of money even if you just use it to check your supply voltages. Even the cheapest ones can do that properly.

jencelo said:
Now, you got me wonder. What if they mark the VCC & GND wrong:) I don't want to hook it up now unless I have someone with this board tell me what is what:)
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On most boards you can measure between the shielding of the input (RCA/Cinch, 3,5mm jack or R/L/Gnd plug connector) and the GND connector. If it says 0 Ohm (or roughly the same as when connecting the two probes), you can be pretty sure it is really the ground.
 
ICG

ICG

Disabled Account
Joined 2007
jencelo said:
You probably don't know but some of Sure's TPA3116 boards including mine has +/- signs on right speaker channel (maybe left can't remember now) on the board but it is supposed to be the other way around. So, that's why I wanted to be extra careful.
Click to expand...

That's right. - and GND are not always the same! On pretty much every bridge tied amplifier you may not connect the speaker negative (-) to the ground (GND).
 
J

jencelo

Member
Joined 2009
ICG said:
That's right. - and GND are not always the same! On pretty much every bridge tied amplifier you may not connect the speaker negative (-) to the ground (GND).
Click to expand...

Thanks for the above explanation! Looks like it is time to get over my "I cannot do DIY" thing and start making at least some small stuff.


No, what I mean was that Sure on some TPA3116 boards printed the signs wrong on the board. See the photo attached. Wrong speaker connection is not going to hurt anything physically but wrong AC connection will:)
 

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ICG

ICG

Disabled Account
Joined 2007
jencelo said:
Wrong speaker connection is not going to hurt anything physically [...]
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Well, as I mentioned above, if you connect the output wrong on a bridged amplifier, you will most likely fry it. So yes, a wrong speaker connection will hurt physically. I feel obligated to say that even knowing you 'only' meant switched + and - speaker connectors.

Edit: There are amplifiers which have layouts on which a + - - + connection for the speakers is in fact actually correct.
 
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denbret

denbret

Member
Joined 2011
jencelo said:
You probably don't know but some of Sure's TPA3116 boards including mine has +/- signs on right speaker channel (maybe left can't remember now) on the board but it is supposed to be the other way around. So, that's why I wanted to be extra careful.
Click to expand...

Yes I know the polarity for some PCB TPA3226 , but I have this PCB ans my friend too (2x400 le 2x500w, same PCB).

On this PCB, each indication are good. :)
 
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J

jencelo

Member
Joined 2009
ppy said:
My mini tweak amplifier AA-AB32313:
  1. Removed schottky diodes D5-D12
  2. Replace power capacitors on Nichicon PM 2200x50V (supply voltage 32V)
  3. Replace the input ceramic capacitors on Elna Silmic II 10x16V
  4. Replace the fan on low noise - Noctua NF-A6x25 FLX
The two graphs. The first ceramic capacitors, the second with Elna Silmic II
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mixMZ said:
So has the sound of the amp changed somehow after those mods or the differences are just on "paper"....?
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I would like to ask the same question:)
 
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