[TechAssist] JBL Subwoofer parts ID
- From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 26 Nov 2003 01:33:15 +0000
JBL sub woofer (powered)
Model Base Wave
Amp in it is a Harmon Electroics 1X100 MFD 10/93
R9 & R10 are open need value, looked like 100 ohm but seems too high for
the input the input off the full wave rectifer the origninals are in the 2-3
watt range, tried a couple of 5W 100 ohm but they are dropping about 23V ea
so that is why I am questioning value, They heat up and the opamp heats up
it is a LF347N (~ NTE859) but no output, might have a bad opamp too, the
outputs are dicrete in the TIP family and test ok.
Peter Oliver
Tucson Radio TV
(at least it isn't the modlue that Harmon introduced on the later JBL &
infinity models with the AMI board with the 53AMI module that contained the
amp parts all sealed in an aluminum can potted in Epoxy, Had one of those
still in the back that was shorted out and even Wholesale was out of line)
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