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Topic: Session 2000 amp |
Roy McKinney
From:
Ontario, OR
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Posted 17 Jun 2020 9:46 am |
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What should the speaker (15") measure in ohms when disconnected?
My amp made a loud pop the last time it was turned off.
No blown fuses. Lights up and no sound out. |
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Jack Goodson
From:
new brockton,alabama (deceased)
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Posted 17 Jun 2020 10:12 am speaker?
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| roy, they came with a 1501-4 ohm. i put a esp15-c 4 ohm in mine and it sounds great:. peavey still doe,s repairs....thanks jack |
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Roy McKinney
From:
Ontario, OR
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Posted 17 Jun 2020 10:24 am
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Thanks, Peavey doesnt answer their phone.
I am measuring about 1.3 ohm.
It is the original spkr and just says peavey on it. |
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Jack Goodson
From:
new brockton,alabama (deceased)
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Posted 17 Jun 2020 10:30 am speaker?
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| roy, the speaker should read between 3 and 4, if it is reading that low u could have a blown speaker. before u send it to anyone if u have an 8 or a 4 ohm speaker i would try it to see what happens. the 8 ohm speaker will not harm the amp....thanks jack |
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Roy McKinney
From:
Ontario, OR
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Posted 17 Jun 2020 10:36 am
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| Thanks Jack, I have an old fender champ tube amp I can hook up to. Will try that. |
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Marvin Born
From:
Ohio, USA
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Posted 17 Jun 2020 12:13 pm
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Did you disconnect the speaker before measuring ? A 4 ohm speaker is about 3 ohms when measured with an ohm meter and not connected. DC resistance is always lower then the rated impedance.
If you get about 3 ohms then I suggest you connect the speaker to another amp rather than a different speaker to the session 2000. If it is still around 1 ohm then the speaker is shorted. Don’t connect that speaker to another amp.
If you measured the 1 ohm with the speaker still connected to the session 2000, then you could have an amp problem. A shorted transistor could put DC on the speaker line and blow another speaker. A safer way would be to disconnect the speaker from the Session 2000 and connect the volt meter in DC mode above 200 volts and turn the amp on, with no signal. There should be no DC. If that is ok then switch the meter to AC and apply a little signal from a guitar and see if the meter moves when you turn up the volume a little. If you get movement then you can connect another speaker. |
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Roy McKinney
From:
Ontario, OR
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Posted 17 Jun 2020 12:19 pm
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| Thanks, the speaker is disconnected. |
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