I have a device with a +4 level output and need to plug this into the audio
input (RCA) on the back of a VCR. I'm assuming the VCR is -10 since most
consumer stuff is.

Is there an easy way to match these up?

Can I just use a resistor on the +4 input or is there more to it?

Does anyone know of a website that might show schematics of a converter
circuit?

Thanks in advance....

Ross

Richard Carlisle wrote:

I have a device with a +4 level output and need to plug this into the audio
input (RCA) on the back of a VCR. I'm assuming the VCR is -10 since most
consumer stuff is.

Is there an easy way to match these up?

Can I just use a resistor on the +4 input or is there more to it?

Does anyone know of a website that might show schematics of a converter
circuit?


Jay Rose has a nice newbie-friendly artical on pads in his book which he
also nicely put up on his website http://www.dplay.com/book/pgs2e/pads.pdf

The Aphex 124a line level matching device will work very very well.

Let me know if you need one as I have an extra stereo unit I would sell for
$65 plus shipping.

RON CHARLES

"Kurt Albershardt" wrote in message
...
Richard Carlisle wrote:

I have a device with a +4 level output and need to plug this into the
audio
input (RCA) on the back of a VCR. I'm assuming the VCR is -10 since
most
consumer stuff is.

Is there an easy way to match these up?

Can I just use a resistor on the +4 input or is there more to it?

Does anyone know of a website that might show schematics of a converter
circuit?


Jay Rose has a nice newbie-friendly artical on pads in his book which he
also nicely put up on his website http://www.dplay.com/book/pgs2e/pads.pdf

The Aphex 124a 2 channel signal level matching device will work very very
well for this application.

I have one for sale at $65 USD plus shipping if you need one.

RON
"Richard Carlisle" wrote in message
...
I have a device with a +4 level output and need to plug this into the
audio
input (RCA) on the back of a VCR. I'm assuming the VCR is -10 since most
consumer stuff is.

Is there an easy way to match these up?

Can I just use a resistor on the +4 input or is there more to it?

Does anyone know of a website that might show schematics of a converter
circuit?

Thanks in advance....

Ross

In rec.audio.pro, Richard Carlisle wrote:

I have a device with a +4 level output and need to plug this into the audio
input (RCA) on the back of a VCR. I'm assuming the VCR is -10 since most
consumer stuff is.

Yes, the VCR probably is -10

Is there an easy way to match these up?

If the +4 device is a mixer or similar device with an output level
control, turning it down about 11dB would do it.

Can I just use a resistor on the +4 input or is there more to it?

You said you have a +4 output and a -10 input. Anyway, yes, it's a
little more complicated, it takes two resistors in a resistive divider
circuit.

Does anyone know of a website that might show schematics of a converter
circuit?

There's most likely an ASCII schematic with derivation of the
resistor values somewhere on groups.google.com. I recall that this
exact question has been answered to several decimal places on
rec.audio.pro before.

Thanks in advance....

Ross

There's most likely an ASCII schematic with derivation of the
resistor values somewhere on groups.google.com. I recall that this
exact question has been answered to several decimal places on
rec.audio.pro before.


Thanks Ben. I found a nice, simple resistor pad schematic here. Just what
I needed.

Ross

In article , "Ron Charles"
writes:

I have a device with a +4 level output and need to plug this into the
audio
input (RCA) on the back of a VCR. I'm assuming the VCR is -10 since
most
consumer stuff is.

Is there an easy way to match these up?


The Henry Engineering Matchbox does a good job.

Garth~


"I think the fact that music can come up a wire is a miracle."
Ed Cherney

Richard Carlisle wrote:
I have a device with a +4 level output and need to plug this into the audio
input (RCA) on the back of a VCR. I'm assuming the VCR is -10 since most
consumer stuff is.

With a VCR you can't really know. The levels are all over the place, and
the automatic gain controls make it hard to tell where they really are.

Is there an easy way to match these up?

I'd suggest an adjustable pad. Turn the knob until it doesn't clip.

Can I just use a resistor on the +4 input or is there more to it?

Get a 10K audio-taper potentiometer. Tie the righthand leg to the input
jack, the center slider to the output jack, and the lefthand leg to the
ground on both. Adjust the level until it doesn't clip any more.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."