faulty speaker?

[chacone87]

I have a Fender Frontman 212 amp and just recently i noticed that the right speaker emits no sound at all. The other speaker pumps out sound like a beast! i havent really played the amp because i dont want to wear down the speaker that still works. I dont really know too much about amps, i just pick up and play!

[52 Bill]

I have a Fender Frontman 212 amp and just recently i noticed that the right speaker emits no sound at all. The other speaker pumps out sound like a beast!

I think that the two speakers are wired in parallel and running just one will probably cause damage to the one working speaker.

Look at the wiring to both speakers and check for loose connectors, etc. If the wiring looks ok, then pull off the wires to the dead speaker and try touching a 9 volt battery across the two speaker terminals. If the speaker is ok, it will make a loud noise.

If there is no noise, then either the voice coil is open or the tinsel wires that connect the voice coil to the terminals is damaged or loose.

[Enzo]

If they are wired in parallel - let's say they are 8 ohm for a 4 ohm total load to the amp - then each gets half the amp power. Let's say 100 watts for discussion. The amp would put the 100 watts into the two speakers as 50 watts each.

If one opens, the entire power of the amp would go to the remaining speaker. But that one speaker is 8 ohms, not 4 ohms, so the amp would be producing only half as much power as before.

So it is a wash. One speaker alone will draw the same power from that solid state amp as would each of a pair of speakers.

[chacone87]

still working on it

thanks Enzo, it made sense. even though im really knew to amplification and its components.

[chacone87]

testing the terminals

I took your advice 52 bill and when i touched the faulty speaker terminals with the 9volt, it did make that loud noise. however, the speaker still emits no sound. i checked the connections and everythings seems to fine-or at least to me. what do i do?

[tubeswell]

I took your advice 52 bill and when i touched the faulty speaker terminals with the 9volt, it did make that loud noise. however, the speaker still emits no sound.

1) Did you disconnect the wires from the speaker terminals first before you did the 9V batt test? If the speakers are wired in parallel, then what you may have heard was the good speaker making a sound; or

2) If however, you did disconnect the wires to the other speaker, and it was the 'bad' speaker that made a sound, then it must be a broken speaker wire. Check the wires with an R-meter.