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Old 25th February 2007, 03:22 AM   #1
Clum is offline Clum  Australia
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Question 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
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Old 25th February 2007, 04:00 AM   #2
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hi Clum,

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

regards
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File Type: jpg sc480 wiring diagram.jpg (96.9 KB, 356 views)
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Old 27th February 2007, 07:48 AM   #3
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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
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Old 27th February 2007, 09:25 AM   #4
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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
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Old 28th February 2007, 10:07 AM   #5
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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
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Old 28th February 2007, 10:20 AM   #6
jaycee is offline jaycee  United Kingdom
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The input positive wire connects to C1. The input negative to R3 (this is going by the PCB diagram that Greg Erskine posted).
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Old 28th February 2007, 10:51 AM   #7
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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.
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Old 1st March 2007, 06:26 AM   #8
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Thanx fellas. i should have everything i need to know now to complete the thing. thanx a billion

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