I have an 075 that reads 2.7 dcr but plays fine. I had a guy sine wave it and it still checks out. Why would the ohm's be so low? Thanks in advance.
I have an 075 that reads 2.7 dcr but plays fine. I had a guy sine wave it and it still checks out. Why would the ohm's be so low? Thanks in advance.
2.7 ohm DCR? Thats just wrong, something is wrong with that VC. Is this one of your units, or did you buy it used off ebay or something?
I would change the fram, that DCR is just wrong.
scottyj
Actually Scott, these are part of that 030 system that I found and sold on Ebay back in July.I just got an email saying the dcr is low on both of them.When I had them I hooked them up to my L100's and they played fine.I don't believe I did a dcr test on them.I check them this way as I believe a dcr test doesn't tell you that much.
The guy I sold them to is now saying the ohm's are low and he was the one who had a guy sine wave them.He says they sound as good as another pair he has with no noise or anthing.I guess he's building a system for someone and doesn't really know what to tell the guy if he ask for a dcr test.
Are low ohms a sign of a bad diaphragm?If so why do they sound the same?I told him to come over here and join up for some really good info.
Are diaphram's still available for these? Thanks for the info.
the diaphragms are available still....
i don't know nada about the dcr issue....
I stand corrected they are reading 2.0 ohms and not 2.7 ohms as stated previous.They play fine and according to this guy he had them sine waved
and everything checks ok. I have asked him to use another meter and will let you know when he gets the new readings from another meter.
Here is an email that I got from this guy. Sounds like a nice person.
" I hooked them up and they sounded just fine. I brought them to a JBL dealer and he put them on one of those sign waves for sound and he compared it to another 075 that I had to see if the volume would be lower in the 2 ohm ones but they sounded the same. They sounded fine going through the sound wave system too. They sound just like the other ones that I have. I just don't know what to tell this guy if he says anything about the ohms being low. Why are so many people concerned about the ohms any way. Is there a reason people are so concerned about ohms. This is the first time this has happened because I have never owned a 075 before. All my other horns the 175 jbl and the 85's all had higher ohms and I never had to worry. I just don't want to piss this guy off and I don't want to look like I don't know anything about the 075's. What do think. Any help would be appreciated from you. Do you know any one you could call and ask them why the ohms would be so low and does it mean the 075 is defective or something. thanks John
that's what I am really worried about that the 075 is defective some how.
thanks John"
Not aftermarket,all wax seals are intact.Originally Posted by grumpy
with the seals intact and apparently "functioning"
ouch...
maybe find another pair to substitute....
and Ebay the seals intact unit to a "collector" as a "rare and valuable item recently checked by JBL techs"
The only thing I can think of is the guys meter calibration is off, and isnt a correct reading.
scottyj
My feelings exactly Scott, I asked him to recheck with another meter.I'm waiting for the new readings.
Yeah - have him pop a new battery in that meter!
That kind of reading must be some kinda fluke ...
2ch: WiiM Pro; Topping E30 II DAC; Oppo, Acurus RL-11, Acurus A200, JBL Dynamics Project - Offline: L212-TwinStack, VonSchweikert VR-4
7: TIVO, Oppo BDP103D, B&K, 2pr UREI 809A, TF600, JBL B460
I thought flukes were good meters
OR, the guy isnt using a Fluke meter?Yeah - have him pop a new battery in that meter!
That kind of reading must be some kinda fluke ...
Fluke always gives me a good reading!
scottyj
Sure - I got my classic fluke at home too - but when the battery dies the meter brand doesn't matter any more - it might as well be from Mannny, Moe, and Jack!OR, the guy isnt using a Fluke meter?
Fluke always gives me a good reading!
2ch: WiiM Pro; Topping E30 II DAC; Oppo, Acurus RL-11, Acurus A200, JBL Dynamics Project - Offline: L212-TwinStack, VonSchweikert VR-4
7: TIVO, Oppo BDP103D, B&K, 2pr UREI 809A, TF600, JBL B460
Yeah, its true, weak batteries give wrong readings!
scottyj
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