Speaker Help

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rickster
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Speaker Help

Post by rickster »

Can someone explain these input and switches to me?I plug my powered pa into the amp jack and they work fine, but both rocker switches are in the 0 position and I was wondering what these were for and what the other jacks do?
Common sense tells me bi amp means you can run 2 amps one to the woofer and one to the horn.
Is the ext jack for daisy chaining ? and can these things really only be 150 watts?Thats what that sticker says.But the sticker also says jbl . these are carvin Cabs.Thanks
Also, I have the ability 5to bridge my 400 watt powered mixer, there are two speakon connectors out of the back, do I just run out of the mono side in one speaker and out the ext to the other to take advantage of this?Image
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MeYatch
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Post by MeYatch »

the switches are to attenuate (turn it down) the tweeter.

The biamp plugs are for running seperate signals (like with an external crossover) to the woofer and tweeter.

The extention jack is for daisy chaining.

And while I don't know what the rating on that cab actually is, yes it really could be 150 watts.
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rickster
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Post by rickster »

I opened the back of the cabs up to see the speakers.Here they are, Now, if i wanted to run that 400 watts bridged to 800, would i have to go direct into the biamp woofer side so as not to damage the tweeters?Would this be too much ? 800 watts daisy chained into 2 600 watt speakers?
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MeYatch
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Post by MeYatch »

theoretically it should be fine. Running 800 watts to 2 speakers is going to give you 400 watts a side. However you will be lowering the impedance to 4 Ohms, so you want to make sure that your amp is not actually putting out 1600 watts or something. Actually even that will probably be fine.

Rule number one is use your ears and make sure you aren't turning things up to insane levels and blowing up all your equipment.

Even if the amp is putting out 800 watts, it could peak at much higher levels and blow drivers.

The impedance of your drivers is not nessisarily the same as that of the cabs though.
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MeYatch
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Post by MeYatch »

you also want to make sure that the amp you are using will actually run at 4 ohms.
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Post by JackANSI »

Power alone won't kill your speakers.. distortion from either the cone moving to its limits or distortion from your power amp will do the damage.

You really shouldn't think that you can walk up to any system and look at the numbers and if it appears that they are close enough that you can just spin the volume knob up to max.

Feel out the sound with your ears. Ask other people what their ears say. It won't sound good if your asking too much from your system.

I would suggest you get some ear plugs, take it into your basement, and plug a decent CD player in and pick a CD (not mastered to ridiculous volumes, try to find an older CD, one with a clean sound and not alot of heavy guitars (jazz is good)). Then play around with it. Its not exactly the same thing as a live band, but it will show you what it sounds like when you get close to distortion on your system.

Watch for clip LEDs, its bad when you see them.
rickster
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Post by rickster »

MeYatch wrote:theoretically it should be fine. Running 800 watts to 2 speakers is going to give you 400 watts a side. However you will be lowering the impedance to 4 Ohms, so you want to make sure that your amp is not actually putting out 1600 watts or something. Actually even that will probably be fine.

Rule number one is use your ears and make sure you aren't turning things up to insane levels and blowing up all your equipment.

Even if the amp is putting out 800 watts, it could peak at much higher levels and blow drivers.

The impedance of your drivers is not nessisarily the same as that of the cabs though.
Concerning the above 800 watts.When my mixer is in bridge mode it comes out of only the left speakon (mono) at 800 watts, there is no other main out.So in bridged.. should i daisy chain them?Will that still give me 400 per speaker? The only main out on this mixer is a right channel and left channel speakon for stereo.The included manual says bridge mode is mono only (left channel) So Im assuming ( but not hookin shit up till i get more info) that i would daisy chain them in bridge mode?
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MeYatch
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Post by MeYatch »

you have the behringer pmh5000? I searched your old posts to find out. I scanned the manual online, and it looks like in bridge mode it has a minimum impedance of 8 Ohms. DO NOT hook up both speakers, you will release the magic smoke. if your amp operated at 4 Ohms in bridge mode, you would daisy chain the speakers, but you can't.

Why are you trying to run it in bridge mode anyway?
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rickster
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Post by rickster »

Well, I kinda just wanted to know what my options were.I think the bridged mode is more or less to use to run a single sub.
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Post by BloodyFingers »

MeYatch wrote:the switches are to attenuate (turn it down) the tweeter.

The biamp plugs are for running seperate signals (like with an external crossover) to the woofer and tweeter.

The extention jack is for daisy chaining.

And while I don't know what the rating on that cab actually is, yes it really could be 150 watts.
The speaker has 600 watts on it. So I would imagine 500 to 600 watts it will handle. Carven makes great stuff. The switches are db pads. If you have to much highs going thru then flip the switch down and you get a -12 db cut. and the same for the lows. They will help you balance your eq some what. If you need some help setting up let me know I would be more than happy to help you out.
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