Name: Steve Kennedy
Email: steve@pacair.com
Subject: extension speaker jack just quit
Thread: 239
Time: Tue, 6 Nov 2001 20:29:24 UTC
First, we need to know WHICH 65 herad you have. The chassis number should be 2100-65, but the important bit of info we need is the exact wording around the speaker output jacks.
The earliest 2100-65 chassis had their Main and Ext. Speaker jacks wired in parallel like the combo amps. The later amps changed this to wire them in series. The nomenclature labeling these jacks was changed to reflect the wiring but the chassis number remained the same.
If you have an early one (with parallel jacks), your failure could be in the jack itself... the spring contact got tired over the years and may nee to be bent back, the spring contact could have failed and snapped off or the jack is corroded and needs cleaning/treatment or replacement.
Another possibility with a parallel jack model is a failed or intermittant speaker cable (you ARE using speaker cable and not standard guitar cable, right? If not, you NEED to!! Using guitar signal cable as speaker cable can cause the amp to oscillate and fail!).
If you have a later model with series jacks, the only way you would get nothing out of one jack only is if the extension jack is internally shorted across.
Steve