Transformer Distance?

shon35us · 26th September 2010, 01:33 PM

Can any one tell me the distance for a transformer should be located from a horn tweeter?

I'm using :Selenium HM17-25 1" Bi-Radial Horn 60x40 1-3/8"-18 TPI | Parts-Express.com
and Goldwood GT-400CD Bullet Piezo Horn Driver | Parts-Express.com with a +/- 50vdc toroid transformer. I was going to place it with 1" gap from each other

bob91343 · 26th September 2010, 03:43 PM

Don't worry about it. Toroids in particular have very little external field.

shon35us · 27th September 2010, 12:13 PM

Can locate it up 4' away?

AndrewT · 27th September 2010, 01:55 PM

Is the toroid powering the amplifier that drives the treble speaker?

shon35us · 27th September 2010, 02:10 PM

Yes along with 5 other speakers

AndrewT · 27th September 2010, 03:18 PM

if the toroid powers the amplifier and that in turn drives six speakers, then why do you need to locate the transformer next to any of those six speakers?

Surely you can get 6inches (150mm) gap from transformer to nearest speaker.

shon35us · 27th September 2010, 04:13 PM

Yes I was going to locate the transformer in the bottom of the tower speaker, just wondering if this will cause any dc voltage loss

AndrewT · 27th September 2010, 04:51 PM

Quote:

Originally Posted by shon35us

........ I was going to place it with 1" gap from each other

Quote:

Originally Posted by shon35us

Yes I was going to locate the transformer in the bottom of the tower speaker,

have you changed your mind?
Was 1", now in the bottom of.

What is the maximum current flowing from the smoothing capacitors?
What is the resistance of the cables connecting the smoothing capacitance to the amplifier?
Now calculate the maximum voltage drop between the smoothing capacitors and the amplifier.
Is there decoupling fitted to the amplifier to meet transient current demand?

shon35us · 27th September 2010, 07:16 PM

OK, thanks. I didn't change mind I was looking for another option. The enclosure is not built yet that's why i was asking.

Thank you for the input

26th September 2010, 01:33 PM	#1
shon35us diyAudio Member Join Date: Oct 2005	Transformer Distance? Can any one tell me the distance for a transformer should be located from a horn tweeter? I'm using :Selenium HM17-25 1" Bi-Radial Horn 60x40 1-3/8"-18 TPI \| Parts-Express.com and Goldwood GT-400CD Bullet Piezo Horn Driver \| Parts-Express.com with a +/- 50vdc toroid transformer. I was going to place it with 1" gap from each other

27th September 2010, 01:55 PM	#4
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Is the toroid powering the amplifier that drives the treble speaker? __________________ regards Andrew T.

27th September 2010, 03:18 PM	#6
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	if the toroid powers the amplifier and that in turn drives six speakers, then why do you need to locate the transformer next to any of those six speakers? Surely you can get 6inches (150mm) gap from transformer to nearest speaker. __________________ regards Andrew T.

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26th September 2010, 03:43 PM	#2
bob91343 diyAudio Member Join Date: Mar 2010	Don't worry about it. Toroids in particular have very little external field.

27th September 2010, 12:13 PM	#3
shon35us diyAudio Member Join Date: Oct 2005	Can locate it up 4' away?

27th September 2010, 02:10 PM	#5
shon35us diyAudio Member Join Date: Oct 2005	Yes along with 5 other speakers

27th September 2010, 04:13 PM	#7
shon35us diyAudio Member Join Date: Oct 2005	Yes I was going to locate the transformer in the bottom of the tower speaker, just wondering if this will cause any dc voltage loss

27th September 2010, 07:16 PM	#9
shon35us diyAudio Member Join Date: Oct 2005	OK, thanks. I didn't change mind I was looking for another option. The enclosure is not built yet that's why i was asking. Thank you for the input

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