Question about Panasonic SA-HE100 Receiver

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LOW IMP when trying to select A and B speakers together

LOW IMP apperas on screen all the time and ERROR appears when trying to select A and B speakers together

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Check the back of your speakers (both sets). If they are rated at less than 6 ohms, you cannot use both sets at the same time. (see page 12 of the manual)
Hope that helps!

Posted on Oct 04, 2009


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Posted on Jan 02, 2017


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What is speaker A low imp . how to use speaker B.thank.

The Low Impedance setting is for when you have even one speaker with <8-ohms nominal impedance so you can use bot speaker pairs together. You still need to have an effective total (parallel) impedance of 4-ohms minimum or there may be problems like blowing up the amps.

Press and hold the SPEAKERS A or B button until LOW IMP lights or goes out, as required.

Press either button to toggle that speaker pair on or off.

It's in the manual page 14, 22 and 25.

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Low Impedance is not a suggestion, it is a WARNING. Your receiver is telling you it senses TOO LOW a load and it's trying to protect itself from damage.

Speakers A& B are running in parallel, so their combined impedance, X, is found by using the formula: 1/X = 1/A + 1/B.

In other words, two 8-ohm speakers in parallel would yield a 4-ohm load.

If your speakers are identical, try running them in series on one speaker output pair. That would keep the impedance safely high.

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Technics sa-ax730 won't play a&b speakers at same time.

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hi try these
There have been 3 versions of Demo Mode used on these appliances.

Version 1(Production to- Date code 39 March 2005)

To Activate
1. From the Default screen of a programme, after switching the appliance on press both Start/Cancel and On/Off buttons together until d On appears in display.
2. Press the Start/Cancel button only and tESt appears in the screen (Temp & Spin symbols also appear)

To Deactivate

Press the Start/Cancel button until all the console LED's illuminate.
Press both Start/Cancel and On/Off buttons together until
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The default screen returns and you can select a new programme.
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Version 2 ( during Date Code 39 March 2005- to Date Code 42 June 2005)

To Activate

1. Same method as version 1.

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1. Simply press the Cancel button and the appliance returns to default.

Version 3 (During Date Code 43 June 2005 - to date )

To Activate

1. Press On/Off and Start/Cancel together with the top left option button until d On appears.

To Deactivate

1. Press On/Off and Start/Cancel toghether with top left option button until d OF appears.

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