Kp3 Mic Input?

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bmbmjmdm
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Joined: Wed Jun 12, 2013 12:36 am

Kp3 Mic Input?

Post by bmbmjmdm »

I have a DM 80 Nady Drum Mic* and a female to 1/4 inch mic cord**, but when I hook the mic up to my Kaoss Pad Kp3, I get no input! The switch is set to "input mic", input volume is full, and trim is all the way down, but I can't seem to hear anything! Anyone know what's up?

*http://www.bhphotovideo.com/c/product/7 ... _Drum.html
**http://www.zzounds.com/item--MONMSLCFX
xmlguy
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Post by xmlguy »

Wrong cable.

http://www.zzounds.com/item--HOSPXM

If that Monster Cable is what you actually bought, you've been ripped off.

Also, as a general rule, it's not a good idea to buy a mic that is cheaper than the cable it uses. It's better to get a $45/mic and a $5 cable than a $20 mic and a $30 cable. It's better yet to get a $100 vocal mic and a $5 cable.

I recommend buying a better quality vocal mic, like a Shure SM58 or better, since it will usually be a good mic for 20+ years.
bmbmjmdm
Posts: 12
Joined: Wed Jun 12, 2013 12:36 am

Post by bmbmjmdm »

That wasnt the actual mic cable, just a link to a similar looking one. Here is actual link;
http://www.ebay.com/itm/400337125851?ss ... 1439.l2649

You didn't say what's wrong with the cable btw. It connects to the mic and connects to the KP3, what's wrong with it?

Also what's a good vocal mic under 100$? Condenser mic preferred as I could also use one for my drum
xmlguy
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Post by xmlguy »

The cable is wrong for several reasons. The cable you bought has a stereo TRS 1/4" plug, which will put signal+ on the tip, signal- on the ring, and ground to the shield. This will typically work only for a 1/4" balanced line input on a mixer (which is less common than 1/4" unbalanced line inputs). The KP3 has a mono 1/4" TS jack. Only the tip and shield of a 1/4" TRS plug will be electrically connected to a 1/4" TS jack. That means that only signal+ will be connected to the KP3 and signal- will not be connected. That's an open circuit, and open circuits have no signal.

If you read the manual for the mic, it shows the kind of circuit required to connect it to an unbalanced input. It requires signal- to be wired to ground, thus completing the circuit for signal+ referenced to ground. The cables that have an XLR on one end an 1/4" mono TS plug on the other are typically wired this way, with pin 2 of the XLR wired to ground. This works on the KP3.

If you buy a condenser mic, then you'll need one with an internal battery or an external powersupply. Vocals and drums are very different sources in frequency range, dynamic range, sound pressure level, and sensitivity pattern. So that's why there are drum mics and vocal mics, and why we don't usually use drum mics for vocals or visa versa. It's like buying tire for a motorcycle or a large 18 wheel diesel truck - the requirements for the tire need to match the intended purpose for it to work well.

The Shure SM58 happens to be a good $99 vocal mic. Untold millions of them have been sold over many decades, with most of them still working. But don't buy one off feeBay because there are many SM58 counterfeit products that are virtually impossible to identify visually (but that don't have the same audio quality as the real thing). Stick to authorized sellers for purchase in this case. This mic is counterfeited because of its popularity, quality, and reputation for durability, giving an incentive to pass off a garbage $5 mic at a $99 price. But there are other good mics too.
bmbmjmdm
Posts: 12
Joined: Wed Jun 12, 2013 12:36 am

Post by bmbmjmdm »

Thanks a bunch for the help, I might just get that! Could you please provide a link to an affordable mic cable that's as you described? Sorry but the description kind of went over my head haha...
xmlguy
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Post by xmlguy »

http://www.sweetwater.com/store/detail/PXF105/

By the way, TRS stands for Tip, Ring, and Shield, which are the conductors on a 1/4" plug that has two wires for signal conductors and the shield for grounding. TS stands for Tip and Shield, which has one wire conductor for the signal and the shield wired to ground, and it doesn't have a ring on the plug. TRS plugs are used for stereo audio, with the tip for the right channel and the ring for the left channel. TRS are also used for mono balanced audio, where the tip is for signal+(positive) and the ring is for signal-(negative). TS plugs are for mono audio and is always unbalanced. Google balanced and unbalanced audio if you want to learn more.
bmbmjmdm
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Joined: Wed Jun 12, 2013 12:36 am

Post by bmbmjmdm »

Awesome! Thank you so much for the help! Super informative, super helpful!
bmbmjmdm
Posts: 12
Joined: Wed Jun 12, 2013 12:36 am

Post by bmbmjmdm »

One more quick question regarding the Shure SM58. You mentioned condenser mics need a power source, what is the SM58's power source?
xmlguy
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Post by xmlguy »

Dynamic mics get their power from the physical vibration of the audio waves transmitted to a coil of wire on a diaphram around a magnetic core. It uses magnetic induction.
MozartVonRobot
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Post by MozartVonRobot »

bmbmjmdm wrote:condenser mics need a power source, what is the SM58's power source?
The SM58 is not a condenser mic; It's a dynamic mic. Just clarifying that there's a distinction.

Oh, another observation: SM58 is good for vocals. There are other mics that are better for other purposes. If you for example intend to beatbox or play harmonica, I would recommend an Audix Fireball V (also dynamic), but I would not recommend that mic for singing.
1_inch_punch
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Post by 1_inch_punch »

+1 on the Fireball...

It handles feedback better than an SM58 or SM57 as it doesn't utilise the proximity effect as much as those mics - you need jam it to your mouth /harmonica.

and it has volume control.
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