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Class D Switching Power Amplifiers and Power D/A conversion

Hypex DS4.0 - XLR
Hypex DS4.0 - XLR
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Old 4th March 2010, 02:39 PM   #1
Tiff_Needle is offline Tiff_Needle  Canada
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Default Hypex DS4.0 - XLR

Hi there,

I've search on this forum information regarding my little issue but I haven't found it so far so here it goes.

I'm planing on using a Plate amp from Hypex (DS4.0) for use with my Peerless XXLS 830845 but I wanted it to be XLR ready in a true balanced configuration.

I saw that they have the DS8.0 with a XLR connection, but I think it would be a waste of money since I think for this speaker the DS4.0 would work fine IMHO.

By the specs it looks like the DS4.0 is based on Hypex's UcD400, and if so, it should be a true balanced configuration in differential mode correct?

So if this is true, it should be possible for me to fit a XLR connector on the plate's amp and wire it to it's input connections on the board. Wright?

If all of this is true, then why to they have a switch on the DS8.0 to choose Between RCA and XLR? It shouldn't be necessary unless it's there to avoid static being induced on it's input.

Am I completely wrong?

Thank You Kindly
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Old 11th July 2010, 05:35 AM   #2
Tiff_Needle is offline Tiff_Needle  Canada
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Location: Montijo, Portugal
Does anyone know if this module uses a trafo os a smps?
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Old 14th July 2010, 11:48 AM   #3
Alfetta87 is offline Alfetta87  France
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Default No transformer

Originally Posted by Tiff_Needle View Post
Does anyone know if this module uses a trafo os a smps?
You are right to say that the UcD400 has a fully balanced input, but in front there is a the complete filter board, which works in unbalanced mode. In the case of the DS8.0, the balanced input is converted to unbalanced (electronically), and at its output stage again converted into balanced. Quality wise it's OK, it's "only" a subwoofer amp.
You can surely find a schematic to convert from unbalanced to balanced. You can use a transformer, but it would be more expensive than a converter.

Also, no need for a power supply, find the +/-12 to +/-15 volts on the board to power your converter.

It's better to keep your mouth shut and appear stupid than open it and remove all doubt...
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