eti-480 help

Clum · 25th February 2007, 03:22 AM

hey everyone im very much a newbie at all this and i bought a eti-480 not so long ago from dicksmith.

I put it together fine except when i came to wiring everything else into it, i got caught up. Just really simple things like the polarity of the input signal. Where do you plug the negative terminal of the speaker wire into and a few other little things

so i was wondering does anyone have a really really basic diagram of how it wires into everything else. btw it is a 100w version

thanx

Greg Erskine · 25th February 2007, 04:00 AM

hi Clum,

I know the SC480 is not the same amp, but it is close so this wiring diagram may help.

regards

Clum · 27th February 2007, 07:48 AM

just what im looking for but the amps are too different. but thanx for trying. Is there anyone out there, thats built one and could even take a photo of it for me

Greg Erskine · 27th February 2007, 09:25 AM

hi Clum,

The PSU shown in the circuit is the DSE recommended PSU for the ETI480 as well as the ETI480. So I'd guess the wiring will be very similar.

Quote: "This power supply can run either the Silicon Chip SC480 power module (K3431) or the older ETI480 power module (K3442). "

I have attached a picture of the ETI480. The only "real" difference to the SC480 is the speaker GND wire location. Personally I would wire the speaker GND straight to the star earth.

Didn't the ETI480 kit come with a wiring schematic?

BTW: The SC480 is only $25 at the moment.

regards

Clum · 28th February 2007, 10:07 AM

yeah thats the diagram that came with it the power side of things is fine i worked that out, but which wire on the input is positive. and where is the other output for the negative? i just don't know and ive read those instructions like 10 times trying to figure it out aswell as reading various stuff on the net and kit books to try and work out if there is some basic knowledeg i am missing.
thanx

jaycee · 28th February 2007, 10:20 AM

The input positive wire connects to C1. The input negative to R3 (this is going by the PCB diagram that Greg Erskine posted).

Greg Erskine · 28th February 2007, 10:51 AM

The "other output for the negative" is usually just the star earth (on the original layout called chassis earth point). If that causes hum then you could try one of the other 0V points.

Clum · 1st March 2007, 06:26 AM

Thanx fellas. i should have everything i need to know now to complete the thing. thanx a billion

Clum

25th February 2007, 03:22 AM	#1
Clum diyAudio Member Join Date: Jan 2007	eti-480 help hey everyone im very much a newbie at all this and i bought a eti-480 not so long ago from dicksmith. I put it together fine except when i came to wiring everything else into it, i got caught up. Just really simple things like the polarity of the input signal. Where do you plug the negative terminal of the speaker wire into and a few other little things so i was wondering does anyone have a really really basic diagram of how it wires into everything else. btw it is a 100w version thanx

28th February 2007, 10:51 AM	#7
Greg Erskine diyAudio Member Join Date: Jan 2002 Location: Sydney/Australia	The "other output for the negative" is usually just the star earth (on the original layout called chassis earth point). If that causes hum then you could try one of the other 0V points. __________________ Greg Erskine

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27th February 2007, 07:48 AM	#3
Clum diyAudio Member Join Date: Jan 2007	just what im looking for but the amps are too different. but thanx for trying. Is there anyone out there, thats built one and could even take a photo of it for me

28th February 2007, 10:07 AM	#5
Clum diyAudio Member Join Date: Jan 2007	yeah thats the diagram that came with it the power side of things is fine i worked that out, but which wire on the input is positive. and where is the other output for the negative? i just don't know and ive read those instructions like 10 times trying to figure it out aswell as reading various stuff on the net and kit books to try and work out if there is some basic knowledeg i am missing. thanx

28th February 2007, 10:20 AM	#6
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	The input positive wire connects to C1. The input negative to R3 (this is going by the PCB diagram that Greg Erskine posted).

1st March 2007, 06:26 AM	#8
Clum diyAudio Member Join Date: Jan 2007	Thanx fellas. i should have everything i need to know now to complete the thing. thanx a billion Clum

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