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- Newsgroups: sci.electronics
- Path: sparky!uunet!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!yale!gumby!destroyer!news.iastate.edu!class1.iastate.edu!sehari
- From: sehari@iastate.edu (Babak Sehari)
- Subject: Re: BROKEN TUBE AMP
- Message-ID: <sehari.721897983@class1.iastate.edu>
- Originator: sehari@class1.iastate.edu
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University of Science and Technology, Ames, Iowa.
- References: <kkv1+xl@rpi.edu>
- Date: Mon, 16 Nov 1992 07:13:03 GMT
- Lines: 22
-
- In <kkv1+xl@rpi.edu> nasiom@vccnw10.its.rpi.edu (Milton Peter Nasiopoulos) writes:
-
- Q. How to check specker impedance.
- A. Use a signal generator, to generate a 1KHz signal put the speaker and
- a one ohm resistance in series, and connect the speaker-resistance
- combinations to the signal generator. Measure, the voltage across the
- speacker and the one ohm resistor. Now you can calculate the speaker's
- resistance at 1KHz. Also check the DC resistance of the speaker with
- ohm-metar. Your future speackers should have the same impedances.
- Q. What could have gone wrong?
- A. The output transformer that connects the speakers to Amp. might have
- shorted itself. If so, it should be changed. Look at the resistors
- see if you can find burning sign on those. See if the Amp burns the
- fuse without speakers? Also, tube Amp are not supposed to run with
- Sq. waves or very high frequencies.
-
- Good luck, let me know if you had more problems.
-
- With highest regards,
- Babak Sehari.
-
- --
-