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10-04-2010, 04:47 PM
| | Registered User | | Join Date: Feb 2009 Location: Vacaville, CA | | | EMG outboard power.
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I'm going to be running a pair of 40DC's with a BQC system before too long. Is there anything like a convertor box out there, commercially or that someone can make, to run this setup through an XLR cable? More or less to run straight to the board. Thanks  |
10-04-2010, 04:52 PM
|  | Supporting Member | | Join Date: Jun 2008 Location: Close to Los Angeles, CA | | | You should be able to use a balanced cable to carry the signal on one lead and the power on the other, you just need to make sure your power supply design is very clean (No ripple) to avoid any noise in the signal path. Since your pickups only need a couple of milliamps power, that should be easy to do. |
10-04-2010, 05:53 PM
|  | David Schwab
Owner, SGD Music Products | | Join Date: Aug 2008 Location: Bloomfield, NJ | | | Do you want to plug into the board for recording/PA, or for phantom power?
You don't need an XLR/Balanced line to plug into the board. Just plug into a line in jack. Balanced lines are for microphones, which have fairly low output. You don't have to worry about noise with the EMGs.
If you want to do it for phantom power, you will need a voltage regulator at the bass to convert the 48V to 18V, and will have to extensively wire it. It's not worth it. It will run on battery power for a long time. I've gone six months between battery changes.
Be sure to run them on 18 volts. They sound better.
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Last edited by SGD Lutherie : 10-04-2010 at 05:55 PM.
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10-04-2010, 06:10 PM
| | Registered User | | Join Date: Feb 2009 Location: Vacaville, CA | | | They're wired to run on 18v for mpre headroom. I just didn't want to rely on batteries. |
10-04-2010, 06:31 PM
| | David Schwab
Owner, SGD Music Products | | Join Date: Aug 2008 Location: Bloomfield, NJ | | Quote:
Originally Posted by thrill74  They're wired to run on 18v for mpre headroom. I just didn't want to rely on batteries. | I've been using batteries in my basses for about 34 years. Never had a battery go dead on me during a gig. There's nothing to worry about.
But you can wire them up to use the stereo ring-tip-sleeve jack for power. But then you have to reply on bringing you power supply.
__________________ SGD Lutherie Hand crafted pickups and electronics.
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10-04-2010, 06:37 PM
| | Supporting Member | | Join Date: Jun 2008 Location: Close to Los Angeles, CA | | Quote:
Originally Posted by SGD Lutherie But you can wire them up to use the stereo ring-tip-sleeve jack for power. But then you have to reply on bringing you power supply. | And I would be willing to bet that the power supply would be more hassle than just using a damn battery. |
10-05-2010, 12:36 AM
| | Registered User | | Join Date: May 2006 Location: Hungary, EU | | Quote:
Originally Posted by line6man And I would be willing to bet that the power supply would be more hassle than just using a damn battery. | yes... but some amps have "phantom powered" input jacks, like EBS do. I can understand if someone feels better with power supplies. and then they can use ANY op-amp or active elements, no worry about tens of milliamps
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10-05-2010, 12:40 AM
| | Supporting Member | | Join Date: Jun 2008 Location: Close to Los Angeles, CA | | Quote:
Originally Posted by ZolkoW yes... but some amps have "phantom powered" input jacks, like EBS do. I can understand if someone feels better with power supplies. and then they can use ANY op-amp or active elements, no worry about tens of milliamps | Tens of milliamps?
That's an insane amount of current, unless you've got LED inlays or something. |
10-05-2010, 12:44 AM
|  | Thunder-Bringer...annnnd Brony | | Join Date: Jul 2010 Location: Houston, TX | | Quote:
Originally Posted by line6man Tens of milliamps?
That's an insane amount of current, unless you've got LED inlays or something. | Exhibit A: 
For real though...the batteries aren't that bad bro. I've gone a year or two before I needed to swap mine out...and its never been at a gig.
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10-05-2010, 03:05 AM
| | Registered User | | Join Date: May 2006 Location: Hungary, EU | | Quote:
Originally Posted by line6man Tens of milliamps?
That's an insane amount of current, unless you've got LED inlays or something. | no, if you are using some better performance op-amps..
of course, I try to find the best compromise between battery life and sound quality.
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10-05-2010, 09:01 AM
| | Supporting Member | | Join Date: Jun 2008 Location: Close to Los Angeles, CA | | Quote:
Originally Posted by ZolkoW no, if you are using some better performance op-amps..
of course, I try to find the best compromise between battery life and sound quality. | If you are using low current opamps, the current draw would be like 100 microamps, even less current. |
10-05-2010, 09:45 AM
| | Registered User
Endorsing Artist: J.C. Basses | | Join Date: Aug 2005 Location: Phoenix, Arizona 85029 | | | I have lost my battery at a gig, but a battery swap isn't as inconvenient as not having a quick-change battery compartment. I'd focus on that above all else.
Furthermore, without batteries, you can't enjoy wireless systems.
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10-05-2010, 10:38 AM
| | Supporting Member | | Join Date: Jun 2008 Location: Close to Los Angeles, CA | | Quote:
Originally Posted by FunkMetalBass Furthermore, without batteries, you can't enjoy wireless systems. | Nonsense! You just wire a cable from your power supply to the wireless unit to give it power.  |
10-05-2010, 11:14 AM
| | Registered User
Endorsing Artist: J.C. Basses | | Join Date: Aug 2005 Location: Phoenix, Arizona 85029 | | Quote:
Originally Posted by line6man Nonsense! You just wire a cable from your power supply to the wireless unit to give it power. | So keep an external power supply (powered by batteries) in one pocket and the wireless in another pocket? Why not just have them in the bass at that point? lol.
I guess you could re-wire the transmitter to pass the voltage along with a stereo jack, but re-wiring the transmitter would
1) void any warrant you had on the system.
2) be more laborious than just keeping batteries in the bass
3) be limited to 9V supplied to your pickups (unless you stepped it up with more laborious internal wiring)
4) drain the battery much quicker so that you'd be more prone to batteries dying during the show.
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Originally Posted by McThumpenstein I don't think the wife would buy the "I need to take off this knob and put a whole new bass under it" story. | |
10-05-2010, 11:32 AM
| | Supporting Member | | Join Date: Jun 2008 Location: Close to Los Angeles, CA | | Quote:
Originally Posted by FunkMetalBass So keep an external power supply (powered by batteries) in one pocket and the wireless in another pocket? Why not just have them in the bass at that point? lol.
I guess you could re-wire the transmitter to pass the voltage along with a stereo jack, but re-wiring the transmitter would
1) void any warrant you had on the system.
2) be more laborious than just keeping batteries in the bass
3) be limited to 9V supplied to your pickups (unless you stepped it up with more laborious internal wiring)
4) drain the battery much quicker so that you'd be more prone to batteries dying during the show. | Mount the wireless transmitter inside of the bass and then run a guitar cable from a power supply stompbox to the output jack of the bass to supply power to the wireless transmitter.  |
10-05-2010, 11:44 AM
| | | | one of those giant tesla coil things to send power through the air to your bass! then you wouldn't need LED lights to put on a show!
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10-05-2010, 07:29 PM
| | David Schwab
Owner, SGD Music Products | | Join Date: Aug 2008 Location: Bloomfield, NJ | | Quote:
Originally Posted by ZolkoW yes... but some amps have "phantom powered" input jacks, like EBS do. | That's a clever idea. Doesn't help if you use some stomp boxes between the bass and the amp though. I guess they assume you will use the effects loop (and I assume it has one).
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10-05-2010, 07:29 PM
| | | | Uhhh, dont use dollar store batterries. Use duracell alkaline. They'll last for several months. Either use a sharpy to write install date right on the battery, or write install date on a little peice of paper taped to the battery. If you feel the need, swap the battery out every 4 months, otherwise you can reasonably rely on duracells to last at least 5 months and probably 6-7.
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10-05-2010, 07:42 PM
| | Registered User | | Join Date: Jul 2010 Location: CT | | Quote:
Originally Posted by darkstorm Uhhh, dont use dollar store batterries. Use duracell alkaline. They'll last for several months. Either use a sharpy to write install date right on the battery, or write install date on a little peice of paper taped to the battery. If you feel the need, swap the battery out every 4 months, otherwise you can reasonably rely on duracells to last at least 5 months and probably 6-7. |
+1
I write on mine too...and when I change em, I use em for suttin else..(around the house or practice..not at a gig)
I awlays chg them before they die.
And I ALWAYS use Duracell...the coppertop  |
10-06-2010, 01:48 AM
| | Registered User | | Join Date: May 2006 Location: Hungary, EU | | Quote:
Originally Posted by Bassdirty +1
I write on mine too...and when I change em, I use em for suttin else..(around the house or practice..not at a gig)
I awlays chg them before they die.
And I ALWAYS use Duracell...the coppertop | isn't there already a (separate) battery status indicator on the market?
like the blinking led in the Audere preamps.. actually I'm just designing one, but I don't think that I am the first, who came up with this idea.
by the way: EBS has switchable phantom power on their input, and at their loop input too, and their pedals use them.
still doesn't work with multiple pedals, but nice feature, I think.
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