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Post subject: Frontman 212r and Boss GT-10 Preamp Poweramp what's up?!?
Posted: Thu Jun 12, 2008 6:13 pm
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Hi all,
Please read I do have a question but I supplied some background info prior to the question.
I have a question about combo amps and effects pedals with preamps built-in. I played guitar constantly when I was younger. I focused more time on the violin over the past several years and gave up the guitar completly. Actually sold my Charvel Model 4 and roland JC-120 along with the effects pedals. Within a few years I started to miss the guitar.
After a recent trip to a guitar store I bought a new guitar (Schecter) an amp (Frontman 212r) and effects box (Boss GT-10). I went to jam at a friends house and he told me that it was not wise to use an effects pedal with a built in preamp. Is this True? Should I plug in to the number two jack (used for guitars with active pickups) or the power in jack? What is the power in jack for?
Any help would be great.
And; Yes as you probably can tell by my screen name I am a big Rush fan. Just saw them in Phoenix last month.
Thanks


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Posted: Fri Aug 01, 2008 8:34 am
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Hi red barchetta,

Your friend is both right and wrong. You shouldn't have a problem using a GT-10 with your amp. I've been using GTs with Fender amps for years with great results!

Only drawback is that your amp obviously has a preamp of it's own. This means that it can colour the sound coming from your GT preamps if you don't address the problem. It won't do any real harm, other than sounding a bit naff.

BUT you have a lot of options with your new, very flexible gear!

1. Bypass the preamp on the amp:
Take the output of your GT to the Power Amp In socket on the amp. This completely bypasses the Frontman's preamp. ANy preamp sounds will be generated from the GT only. BE CAREFUL OF LEVELS because you will be feeding your signal into the power amp - TURN THE GT OUTPUT RIGHT DOWN and work it up to the level you like.

2. Bypass the GT preamps. You can set a GLOBAL PREAMP model on the GT. It basicallly overrides the preamp settings from one of the patches onto every other patch. It doesn't erase the settings in the patches themselves so if you disable it you get your original settings back. Make a patch with the preamp modelling OFF. Use that patch as the source.

3. Use both and tweak. Your GT has various output settings to help 'blank' the colouration caused by the amp. Careful use of this will go a long way.

4. Try the famous "4 CABLE METHOD". Set up the GT and amp as follows
cable 1 goes from guitar to the GT input jack
cable 2 goes from the GT loop output to the amp's input jack
cable 3 goes from the Preamp Output on the amp to the loop return on the GT
Cable 4 goes from the GT output to the Power Amp input on the amp.
Make sure the loop mix is set to 100% ie an insert loop; a complete break in the chain or else you may get feedback occurring.

Why do this? Basically what this does is isolate the amplifier's preamp from it's power amp. You can then use another preamp on the GT (amp modelling) OR you can use the original preamp on the amp and toggle them on and off. In essence your loop on/off switch switches your Frontman's preamp in or out of the chain. Pretty cool! Again, watch the GT output level.

Another hidden feature is the option then to use neither preamp - what does the cleanest amp in the world sound like...? :D

In answer to you other questions regarding your inputs, they will have different impedances/ sensitivities. You are right - if the amp manual says use input 2 for higher output instruments, then sticking your GT in there would be the proper choice. I wouldn't worry about it too much though - a lot of amps can take it in both inputs...ahem.. it's just best practice to use the proper input. The Preamp Out/ Power Amp In jacks are part of the same thing - an effects insert. Inserting a jack in the power amp socket breaks the link between the preamp and power amp. Why? So you can stick in an effects unit! Things like reverbs, delays maybe but a bad idea with distortions. But it can also be used for things like bypassing the preamp as above or "slave" amps, where one preamp of an amp sends it's signal to the power amp of another for more oomph! It can also be used to feed the preamp signal to a mixer for studio purposes.

I hope this helps. It's important to play music and guitar is a lot of fun. You have some good gear and I hope that you have a little less fear and more fun using it all from now on!

All the best,
TJN


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Posted: Sun Aug 03, 2008 9:08 am
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I had the same question cool that it was answered.


I have a Fuzz if I use it in Input 1 it starts clipping. If I use it in INPUT 2 it sounds great.


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