Behringer truth 2031As and hiss

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illies17

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I just got some Truth B2031As, and i have them plugged into a presonus firebox, and i have some bad hiss/static coming out of them and its super annoying. I got CBI instrument cables, i was gonna get speaker cable but the guy at popplers told me i need instrument cables for some reason so that is what i got, and i think they are of ok quality, but is that the problem, and would getting better cables take care of the problem and what would you recommend, i would like to keep it under 15 bucks at least a peice, i only need like one 3 footer and a 6 footer.
 
Here is a quick lesson (from google group):

Instrument Cables - Unbalanced cables with a single conductor inside a
(usually) braided shield. The thing that makes them "instrument"
cables is that they are pre-assembled with 1/4" phone plugs on both
ends and usually are of convenient lengths for stage use.

Speaker Cables - Loudspeakers draw real current, so speaker cables
need to be made from much heavier gauge wire than small signal cables
(such as instrument cables). While the outside diameter of a speaker
cable and a shielded small signal cable may be about the same, the
wire diameter in the speaker cable is larger. Speaker cables don't
need to be shielded, so they aren't.

-Mike Rivers-


Original link:
http://groups.google.ca/group/rec.a...s+speaker+cable&rnum=1&hl=en#7d94d551afebff7f
 
sooo are you saying i need to get a speaker cable, you just explained the difference between to two, i still need to know how to get rid of the hiss. I dont know why that guy told me i needed instrument cables in the first place.
 
They're active monitors. You don't need speaker cables. If you were running separate amps, you would need speaker cables between the amps and speakers and instrument cables between the interface and amps. Since the amps are built into the speakers, you only need the instrument cables.

I don't think the cables are your problem. Although, if your interface has balanced outs and the monitors have balanced ins, it would be a good idea to use balanced cables.

Make sure that any unused inputs on your interface are muted. Try reducing the volume on your monitors some when you don't need full power.
 
i get the hum when i don't have any volume at all, i have all the inputs turned down, but when i plugged in my headphones in with a 1/4 in. adapter and there was no hum, but the adapter was balanced, so maybe i just need to try balanced cables, I'm sure thats the reason, but i dont want to go buy new cables just to see if its different. Any other suggestions??
 
Is it hiss, or hummm, or crackling? Those are different things, often with different causes.
 
No sense in trying anything else until you try balanced cables. The speakers are designed for them. 99% chance it's your problem.
 
hiss and hum are different things. it sounds like to me that you have your cables crossing or running parallel to some power cables. try moving your cables around.
 
Jamz0r said:
No sense in trying anything else until you try balanced cables. The speakers are designed for them. 99% chance it's your problem.
Click to expand...

Yep. The firepod and the truths allow for balanced signals. You're cheating yourself by not using balanced cables.

Edit - you have a firebox, not a firepod. I'm guessing the above still applies though but I'm not sure.
 
Using unbalanced cables isn't cheating yourself or smoking crack unless you have a noise problem that can be solved by using balanced lines instead. Other than that, there's no benefit to balanced lines over unbalanced.
 
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