Hi,
Can someone give me the more details of these connections?
Signal Connector Pin Function Description
1 Vcc Positive power supply input for the signal section -OK
2 Vss Negative power supply input for the signal section. -OK
3 AGND Ground terminal for the signal section. -from where?
4 Monitor Unbalanced attenuated output signal. - what is this?
5 Vi+ Positive input (balanced input buffer). - OK
6 Vi- Negative input (balanced input buffer). - OK
7 Mute Mute input (Internal pull-up). -?? feed a voltage/connect to ground ??
8 Standby Control pin for standby control. (Internal pull-up).-??
Power Connector Pin Function Description
7,8 PGDN Power GND for the single ended power supply input Vp - Simple ground??.
3,4 Vp Power Supply (single) for the power stage - Input power 80v OK
1,2 Vo “ Cold ” balanced power output terminals. In phase with Vi - Negative speaker out?
5,6 Vo+ “ Hot “ balanced power output terminals. In phase with Vi+ - Positive speaker out?
link to source in manuals ICEPOWER500A 500W General purpose high quality audio amplifier | Profusion
Thanks for your help
Can someone give me the more details of these connections?
Signal Connector Pin Function Description
1 Vcc Positive power supply input for the signal section -OK
2 Vss Negative power supply input for the signal section. -OK
3 AGND Ground terminal for the signal section. -from where?
4 Monitor Unbalanced attenuated output signal. - what is this?
5 Vi+ Positive input (balanced input buffer). - OK
6 Vi- Negative input (balanced input buffer). - OK
7 Mute Mute input (Internal pull-up). -?? feed a voltage/connect to ground ??
8 Standby Control pin for standby control. (Internal pull-up).-??
Power Connector Pin Function Description
7,8 PGDN Power GND for the single ended power supply input Vp - Simple ground??.
3,4 Vp Power Supply (single) for the power stage - Input power 80v OK
1,2 Vo “ Cold ” balanced power output terminals. In phase with Vi - Negative speaker out?
5,6 Vo+ “ Hot “ balanced power output terminals. In phase with Vi+ - Positive speaker out?
link to source in manuals ICEPOWER500A 500W General purpose high quality audio amplifier | Profusion
Thanks for your help
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I think the documentation is better directly from ICEpower, rather than from a distributor
https://icepower.dk/download/2402/
The block diagram and connector diagram on page 4 should answer most of your questions.
https://icepower.dk/download/2402/
The block diagram and connector diagram on page 4 should answer most of your questions.
Getting documentation directly from the manufacturer is a good call, but make sure you choose the correct datasheet as well.
ICEPower500A ≠ ICEPower500ASP
The datasheet from the Profusion website contains all the information needed and is the correct one. Mute, standby and monitor pin functionalities are explained and examples for external circuits are given. I don't know what more you could want? It clearly states mute and standby are both active low and have internal pull-ups.
ICEPower500A ≠ ICEPower500ASP
The datasheet from the Profusion website contains all the information needed and is the correct one. Mute, standby and monitor pin functionalities are explained and examples for external circuits are given. I don't know what more you could want? It clearly states mute and standby are both active low and have internal pull-ups.
Yes sorry, I see that the Profusion download link directs to the ICEpower site -
https://icepower.dk/download/2411/
https://icepower.dk/download/2411/
Indeed. So you have all the necessary information at your fingertips.
AGND comes from the 12V signal section PSU (a dual rail PSU; +12V, -12V, GND). If you use an unbalanced input you have to short AGND to Vi-, otherwise you'll get no sound.
I use a pair of Connex SMPS300RS.
You can specify the output voltage and choose the aux voltage on their site.
You can specify the output voltage and choose the aux voltage on their site.
I have had dealings with Connex in the past. They are wary of individual DIYers who may consume their time. But I recommend them.
I think you should just go ahead and order the Connex SMPS800RS -
SMPS800RS | Connex Electronic
In the Output Voltage dropdown, select the 72V option.
I think you should just go ahead and order the Connex SMPS800RS -
SMPS800RS | Connex Electronic
In the Output Voltage dropdown, select the 72V option.
Hi Linuxfan,
Thanks for the information. Have you used one of these?
I was looking at SMPS500R at 80v as an alternative as I have two 12v smps's with me. Would you still recommend the 72v SMPS800RS?
Also would you have any indication of post time using the Green Line - Au option? any idea what it is?
Regards
Thanks for the information. Have you used one of these?
I was looking at SMPS500R at 80v as an alternative as I have two 12v smps's with me. Would you still recommend the 72v SMPS800RS?
Also would you have any indication of post time using the Green Line - Au option? any idea what it is?
Regards
You mean the Connex SMPS500R? No! That's a dual-polarity power supply - completely wrong for your ICEPower 500A! You need a single-output power supply.
In the Connex range you have the choice of SMPS300RS, SMPS600RS, SMPS800RS, or SMPS2000RS. I suggested the SMPS800RS because that's quite suitable for the power rating of your amplifier ... with some headroom.
But you can use any of the models I just listed. Obviously the SMPS300RS will not run your amp at its full rating ... but heck, are you using the amp to fill a concert hall? 300 watts will still drive most speakers to wall-shaking levels.
Sure, you can order any of those power supplies at a custom voltage of 80V ... but the standard option of 72V will be barely different, and the amp might actually sound better at the lower voltage.
Regarding delivery, my SMPS300RS was delivered by standard postage ... but in the pre-Covid era. I think international shipping is backed up these days.
Wiring is simple: AC active & neutral in, DC +ve & -ve out. For the SMPS800RS refer to page 3 of the pdf file here -
http://connexelectronic.com/wp-content/uploads/2017/08/SMPS800RS.pdf
I attach a photo of my SMPS300RS + 3e-audio TPA3251 amplifier construction, if it helps. You will see I went a little overboard with shielding for the power supply. Don't be confused by the unconnected red/black wires - I temporarily bypassed the capacitance multiplier board, which sits next to the Connex.
And since we're following on from a discussion of earthing, let me mention earthing for Connex (and possibly other) switch-mode power supplies: if you look at the underside of the Connex board you will see that 2 of the mounting holes have metal contacts which connect to shielding areas of the power supply circuit. It's important to connect those mounting holes to chassis/earth via metal standoffs.
This is a separate issue to DC GND/AGND earthing (at the amplifier) - this is for proper EMI/RFI suppression.
http://connexelectronic.com/wp-content/uploads/2017/08/SMPS800RS.pdf
I attach a photo of my SMPS300RS + 3e-audio TPA3251 amplifier construction, if it helps. You will see I went a little overboard with shielding for the power supply. Don't be confused by the unconnected red/black wires - I temporarily bypassed the capacitance multiplier board, which sits next to the Connex.
And since we're following on from a discussion of earthing, let me mention earthing for Connex (and possibly other) switch-mode power supplies: if you look at the underside of the Connex board you will see that 2 of the mounting holes have metal contacts which connect to shielding areas of the power supply circuit. It's important to connect those mounting holes to chassis/earth via metal standoffs.
This is a separate issue to DC GND/AGND earthing (at the amplifier) - this is for proper EMI/RFI suppression.
Attachments
Oh, I just saw that the SMPS800RS has an IEC AC connector mounted at the corner of the board - so you can mount this board close to the edge of your chassis, and AC connection is ready to go.
This means the correct earth connection is already established to the SMPS800RS board ... but it's still important to use metal standoffs so that earth connection is carried through to the chassis - this is protective earth.
This means the correct earth connection is already established to the SMPS800RS board ... but it's still important to use metal standoffs so that earth connection is carried through to the chassis - this is protective earth.
Just a question to get a better understanding, What would be the difference in getting say a +-36v output with a differential of +72v vs getting a dedicated 72v PSU output with 0 and +72v?
Thanks
I think this answers your question
Is +24V to ground the same as +12V to -12V : electronics
But you could post that question in the "Power Supplies" sub-forum if you want to get more detail.
Is +24V to ground the same as +12V to -12V : electronics
But you could post that question in the "Power Supplies" sub-forum if you want to get more detail.