600% Error!!

bigcatdairy · 16th December 2005, 02:02 PM

RECENTLY I USED>>AUDIO TESTER<<TO MEASURE MY CAR AUDIO
DRIVERS' P/S PARAMETERS,BUT I GOT 600% ERROR IN IMPEDENCE
,WONDERED Y?CAN ANY BODY TELL? THANKS!
PS:SOUND CARD OUT MATCHED AMP THEN DRIVER,DRIVER
CONNECTED WITH 3 OHM CERAMIC RESISTOR IN SERIES,RESISTOR PARALLELLY PLUGGED WITH SOUND IN.

ALSO TRIED TO CONNECT WITHOUT AMP.BUT DIDN'T WORK.

Cal Weldon · 16th December 2005, 02:11 PM

First, please don't type with the caps lock on.

Second, have you tried removing the driver and measuring the DC resistance?

bigcatdairy · 16th December 2005, 02:26 PM

yup!that's what i want to supplement,DC resistance was 3.2 ohm,

specified Rnom was 4Ohm,anyway it's impossible to be over 20

Ohm.and i measured Rnom was 24.xx Ohm, #_#!!

BassAwdyO · 17th December 2005, 07:34 PM

perhaps you're measuring the impedence peak at resonance

16th December 2005, 02:02 PM	#1
bigcatdairy diyAudio Member Join Date: Aug 2005	600% Error!! RECENTLY I USED>>AUDIO TESTER<<TO MEASURE MY CAR AUDIO DRIVERS' P/S PARAMETERS,BUT I GOT 600% ERROR IN IMPEDENCE ,WONDERED Y?CAN ANY BODY TELL? THANKS! PS:SOUND CARD OUT MATCHED AMP THEN DRIVER,DRIVER CONNECTED WITH 3 OHM CERAMIC RESISTOR IN SERIES,RESISTOR PARALLELLY PLUGGED WITH SOUND IN. ALSO TRIED TO CONNECT WITHOUT AMP.BUT DIDN'T WORK.

16th December 2005, 02:11 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	First, please don't type with the caps lock on. Second, have you tried removing the driver and measuring the DC resistance? __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

17th December 2005, 07:34 PM	#4
BassAwdyO diyAudio Member Join Date: Jun 2004 Location: Illinois	perhaps you're measuring the impedence peak at resonance __________________ The golden rule of DIY: Build nice, or build twice!

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16th December 2005, 02:26 PM	#3
bigcatdairy diyAudio Member Join Date: Aug 2005	yup!that's what i want to supplement,DC resistance was 3.2 ohm, specified Rnom was 4Ohm,anyway it's impossible to be over 20 Ohm.and i measured Rnom was 24.xx Ohm, #_#!!

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