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Post subject: I dont understand how to work my FM212R
Posted: Tue Jun 04, 2013 12:31 pm
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I figured I'd come here so i can get a better responce...
Im trying to use my Digitech RP155 Multi-Effect pedal to my FM212R. I get so much hissing when i use the More Drive channel and all clean presets (including no amp simulators, equalizations, noise filters, or anyother effect on). I've been connecting my guitar to the pedal and connecting to the 1st input (because i don't know any better way to hook it up). I found online saying I should connect to the effect loop, but i don't have one. Can anyone help me with this situation? I only use chorus and delays for my effect box and i need to put those after the distortion.


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Post subject: Re: I dont understand how to work my FM212R
Posted: Tue Jun 04, 2013 1:05 pm
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Turn the volume to 3 on the frontman.


Use the volume on your multi effects to control how loud the sound is.

Try adding a noise filter (or two) into you digital effects chain on the digitech


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Post subject: Re: I dont understand how to work my FM212R
Posted: Tue Jun 04, 2013 2:00 pm
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Muscleman19 wrote:
...I found online saying I should connect to the effect loop, but i don't have one...


Hi Muscleman19,

Yes, you do have an effects loop. "Preamp Out", and "Power Amp In" is the effects loop. The Preamp Out from the amp connects to the input of your effects pedal, and the output of your effects pedal connects to the Power Amp In on the amp, with guitar connected to amp input.

I take it that you don't have a manual.

http://support.fender.com/manuals/guitar_amplifiers/FM_212R_manual.pdf

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Post subject: Re: I dont understand how to work my FM212R
Posted: Tue Jun 04, 2013 6:39 pm
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I own a 212R and use a Boss GT-10 for better tone and versatility.

My recommendations once you get the hissing resolved

Use a compressor- even a light compressor with get rid of that annoying solid state jagged edge.

The frontman distortion is pretty rough in my opinion and you might be better off using your multi effects pedal distortion.

The reverb on the frontman is one of its best features (it's only feature really)

As for your amp settings I've always found the fm212 R to be very bright and I usually leave my treble on 4. This could also be adjusted using your multi effects pedal.


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Post subject: Re: I dont understand how to work my FM212R
Posted: Wed Jun 05, 2013 2:34 am
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shimmilou wrote:


+1

When in doubt it never hurts to RTFM!

:lol:

Arjay

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Post subject: Re: I dont understand how to work my FM212R
Posted: Wed Jun 05, 2013 3:31 am
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Muscleman19 wrote:
I figured I'd come here so i can get a better responce...
Im trying to use my Digitech RP155 Multi-Effect pedal to my FM212R. I get so much hissing when i use the More Drive channel and all clean presets (including no amp simulators, equalizations, noise filters, or anyother effect on). I've been connecting my guitar to the pedal and connecting to the 1st input (because i don't know any better way to hook it up). I found online saying I should connect to the effect loop, but i don't have one. Can anyone help me with this situation? I only use chorus and delays for my effect box and i need to put those after the distortion.


If you're using a RP-155 with your amp , I wouldn't even bother using the amp's distortion. The Clean from the amp will enchance the sound from your processor and make it sound that much better. I have a RP-50 which I alternate between my Vintage Fender Stage 185 and my 1989 Peavey Bandit 112 , depending on where I'm gigging at , and both amps make that pedal sound awesome.


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Post subject: Re: I dont understand how to work my FM212R
Posted: Sat Jun 08, 2013 9:21 am
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Retroverbial wrote:
shimmilou wrote:


+1

When in doubt it never hurts to RTFM!

:lol:

Arjay



+2

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Post subject: Re: I dont understand how to work my FM212R
Posted: Wed Jun 19, 2013 4:05 am
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I have the Frontman 100 watt. As several have already said,you do have an effects loop{it's on the front of the amp}. Yes, a good compressor{I use the Dyna Comp}is a great idea. Finally, don't even use the crunch/more crunch or whatever they call it. Just use the effects through the clean channel.I use a pedal board with 10 or so stomp boxes and it sounds great. Hope you get your probs solved.


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Post subject: Re: I dont understand how to work my FM212R
Posted: Fri Sep 20, 2013 12:36 pm
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Hello,

I am currently trying to record some stuff (guitar and bass) with a Line 6 UX 2 interface, using a Fender FM 212 R. (I also have an old 15 R amp, which has a head phone jack)
My problem is; since the pre-out of the 212 R does not mute the amp itself when connected to the interface, the textures of the recorded material are lush if I do not turn up the volume remarkably - but I can't do so because then my neighbors would definitely tear me apart.

Is there a way to 'mute' the amp itself, so the only signal that comes out of it passes the pre out jack only?
Or would it be better if I used the small 15 R? (Somebody told me that the signal gets weakened when it goes through the headphone jack, and because the amp is quite old, it is humming a lot. I don't want those noises on my recordings)


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Post subject: Re: I dont understand how to work my FM212R
Posted: Fri Sep 20, 2013 7:01 pm
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Hi MaYooh,

Plug in a "dummy" plug into the "Power Amp In", and this should disable the power amp, so no sound will come from the amp speaker. A dummy plug has nothing connected to it, an empty plug. :idea:

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Post subject: Re: I dont understand how to work my FM212R
Posted: Mon Oct 14, 2013 8:53 am
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Thanks for the quick reply. Though, I happen to have a new problem which seems more serious

Whenever I turn on the amp, it clicks very loudly at the beginning. When the clicking itself vanishes, a hum appears. It does not sound like the type of humming that you get when you touch a cable at its tip or something; it is way louder, and it does not seem to be connected with the knobs. Even if I turn down all the knobs (also the volume knob), the humming's volume does not change at all. This occurs even if there is no input. If the amp is turned on for some seconds, the clicking sound comes simultaneously with the humming. Because of the fact that I don't want a meltdown in my bedroom, that's the point where I turn off the whole thing.

This happened to me for the first time. I was putting a boss power supplier into a Harmonist pedal because its LED was blinking, which means that the battery was running low. When it was connected, a loud cracking sound came out of the speaker, and that is the current state.

I can change all settings, change from drive to clean setting - nothing changes, the hum is not affected.

Can anyone help me? Do I have to solder? I'm a n00b if it comes to such things, so if it is an issue with the diodes or transistors, it would be helpful if you could tell me which particular device might be broken or affected.


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Post subject: Re: I dont understand how to work my FM212R
Posted: Mon Oct 14, 2013 12:34 pm
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What do you get with all pedals disconnected from the amp (just guitar and amp, nothing else plugged in)? Also, you should remove the battery from a pedal before you plug it in to an external supply, and really shouldn't connect pedals or power while plugged into a live amp.

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Post subject: Re: I dont understand how to work my FM212R
Posted: Mon Oct 14, 2013 1:11 pm
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Yes, I know, it was the biggest mistake I've done so far concerning my rig.

It's always the same humming, whether there are pedals connected to the amp or not.
Even if I connect the guitar only, it's the same. What irritates me the most is that it is the same humming when I disconnect everything, i.e. nothing is connected to the amp.
I have the bad feeling that I've fried up something in my amp.


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Post subject: Re: I dont understand how to work my FM212R
Posted: Mon Oct 14, 2013 2:12 pm
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It's really hard to say without checking the circuitry inside, but the first place I would look is the input circuitry around op-amp U1 (TLO72, common and inexpensive), possibly the op-amp itself. If you don't have a signal generator and scope, you would at least need meters to check the resistors and capacitors around that input circuit, and also check all solder joints. If you can't find anything wrong, replace the the op-amp, and coupling cap C11, maybe even C2 and C3. Another possibility is that you lost an electrolytic filter cap in the power supply, check C71, C72, C75, C76, but again you would need the right test equipment to check. If you don't have any test equipment, you might have to settle with a shotgun approach, replacing the op-amp, coupling caps mentioned above and filter caps mentioned above.

These are just a couple of likely possibilities, you just can't be sure without checking things.

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Post subject: Re: I dont understand how to work my FM212R
Posted: Mon Oct 14, 2013 2:27 pm
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Schematic:

http://support.fender.com/schematics/guitar_amplifiers/Frontman212R_schematic_Rev-A.pdf

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