#1
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Phantom power
Anyone care to make sure I'm understanding the following correctly from the Godin FAQ? It says you have to be plugged in to a mixer using a mic cord, so assuming your amp even has an XLR connection, how do you know whether it produces phantom power (what do I look for on the spec sheets)? Then the mic cable will take me from that at the amp to the normal 1/4" connection to plug into the guitar?
What is Phantom Power and what does it do for my Multiac Duet? Quote:
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#2
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According to the following alpha plus review, this is it except the 24v* doesn't sound right, since the Godin duet/ Yamaha silent guitar etc. Use a 9v battery. Problem?
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*and according to AER's spec page, that should probably be 48v anyway. Last edited by VKB; 06-27-2012 at 05:20 AM. |
#3
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Hi VKB,
Its been many years since I've owned a Godin Duet model, but I checked the Godin FAQ sheet and apparently the Duet model has an XLR input (mic cable input) as well as a 1/4" input. If the PA mixer has phantom power, you can power the guitar (no onboard battery needed) with a mic cable running from the mixer (with phantom power turned on) to the guitar's XLR input. Some guitar amps have phantom power on the mic input, but that's usually intended for folks who want to run a condenser vocal mic thru the amp. You'll need two mic inputs with phanton power to run both a vocal mic and your Duet model Godin battery free. That'll probably narrow down your amp choices quite a bit (if you happen to be set on running everything thru an amp, rather than a PA system). I can tell you that the Fishman Solo Amp has two phantom powered mic inputs, so that's one possibility. I hope that helps explain things. Running thru a phantom powered mic cable (as opposed to a mono guitar cable) can also be quieter in some situations, so saving on batteries is only one of the advantages. Gary |
#4
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Hi, thank you so much for the info & fishman solo (performance?) recommendation. That thing looks awesome, and with consensus 5 star reviews.
Unfortunately Godin has since informed me that their FAQ is actually wrong & needs to be updated- that their concert duets no longer run on phantom power. Yamaha also told me their sln130nw doesn't either, but this guy really didn't seem certain, & all their previous silent guitars did have that capability, so I'll be pursuing that further. In the meantime, do you know if those mic outputs with 48v phantom power designed for condenser mics, those won't work for a guitar that takes a 9v battery anyway, right? I have to find an amp with a 9v phantom power output, or does it matter? Thanks again. |
#5
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The Line6 Variax 300 Classical was a guitar which was phantom powered by a power module. You could use an onboard battery with it, but battery life was very poor.
Line6 doesn't make this guitar model any more, but there may be a few used ones around. Be sure the power module comes with it. Another (pretty expensive) option is to put passive LR Baggs Hex pickups (six individual mini-saddles with a passive pickup in each one), or passive RMC Hex pickups, in the guitar and use an outboard preamp with it. I have the passive Baggs Hex system in my thin-bodied classical. It works very well with my Fishman Platinum Pro EQ outboard preamp. A much cheaper battery-free solution would be to put a Mi-Si Acoustic Trio pickup system in the guitar. This is an undersaddle pickup system which uses a super capacitor to power the system. You plug the charger in for one minute and you're good for several hours of playing time (up to eight hours, they say). I had the Mi-Si Acoustic Trio in one of my guitars for awhile and it did indeed work as claimed. I hope that gives you some useful ideas. Gary |
#6
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With respect to using 48v phantom power to power an onboard pickup system, that would only work if the pickup system is designed for that (as the Godin Duet models apparently were at one time). You'd either need an XLR plug or TRS (tip-ring-sleeve) 1/4" stereo plug to deliver the phantom power. The pickup system would need to be set up to utilize that power.
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#7
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Here's an aftermarket pickup system which is designed to operate on phantom power if desired.
http://www.schattendesign.com/artist_preamp.htm Notice that you need a special cable, CAB-1, to use 48v phantom power off a mic output. That cable has an XLR connector on one end and a TRS 1/4" plug on the other end. They also have an 18v outboard power module (takes two 9v batteries) available if you want to power it with that way. Gary |
#8
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My fishman Artist supplies 24 volt phantom power but it seems like everything requires 48 volts. So what is thier reasoning.
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Taylor 315 CE Taylor 324e Tacoma JM9-K&K |
#9
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More recently, 12v and 24v balanced phantom powers have been proposed as additional standards, but I'm not sure if they have ever been entirely adopted by the industry. |
#10
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As the previous poster stated, phantom power is usually expressed as 48v whereas in practice the unit using the power takes what it needs. The offered power will be regulated to match the need.
What's more, don't confuse the battery rating with the Multiac's phantom power rating - there will be some sort of regulator or transformer internally to ensure that the right current goes to the electronics. Some DI boxes (eg BSS) can be powered from both 9v batteries and "48v" phantom power.
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Gibson ES-335 Studio 2016; Furch OM34sr 2015; Fender MiJ Geddy Lee Jazz bass, 2009; Taylor 414CE 2005; Guild D35 NT 1976; Fender MIM Classic 60s Tele 2008; Fender US Standard Strat 1992; G&L ASAT classic hollowbody 2005; Ibanez RG350MDX 2010(?); Ibanez Musician fretless, 1980s; Seymour Duncan Tube 84-40; Vox AC4TV; Ex-pat Brit in Sweden
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#11
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Great, thanks all. I understand now. I thought I was at a dead end here, but looks like there are lots of options.
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