Question about Alpine 600W Class D Mono MOSFET Amplifier with Adjustable Crossover

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Lpine Type-X 5.25 component speakers- Crossover problem

I need to know the capacitor value for the tweeter as the capacitor is not working and the factory one is all black with no writing.

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You can use any providing you can determine the max voltage in the device and the polarity.
If the capacitor in the unit has a wire out of each end and both ends have indents then it's a non-polar type.
Speaker capacitors for tweeters tend to be around 2uf.
The Voltage of the capacitor should be bigger than any voltage in the device.

Posted on Feb 16, 2009

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Don't understand how to connect my speakers

the 4 inputs are for biamping, (using separate amplifiers for low and high frequencies). just leave the pins in place and connect the amplifier to one red(+) and one black(-) connector on the speaker. It has an internal crossover to protect the tweeter.

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Tweeter stoped working on one main cab.

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Apr 02, 2010 | Amplifiers & Preamps

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I connected my Behringer E1520 to my QSR4000 Amp They worked fine once. the second time I connected them the 15'' woofers stopped working on both. I have sound in the tweeters only. I do not have a...

Is your amp actually a QSC? Well, regardless the first thing that I would is check your both your speakers and crossover. There are a couple of things that could have gone wrong, but it's going to take a little work to trouble shoot it. It sounds like you have already checked and the amp is actually producing out so..

1. next you will need to remove the input connector plate of the speaker and do a visual inspection of the crossover itself. you should be looking for anything out of the ordinary such as burnt areas on the circuit plate.

2. Is there a fuse on the circuit board to protect the speakers themselves? if so, use your volt-ohm meter and check it for continuity.

3. check the woofers themselves, you can do this with a 9 volt battery and some raw speaker cable. When you connect the speaker leads to the battery you should hear a "scratching noise". When you connect the positive of the 9volt to the postive of the speaker the cone will move forward. The opposite will occur if you reverse the leads. If the speaker moves or makes any noise, the speaker should be called good. At this point, it's definitely a cross-over issue.

I tried to find some more product info to be sure that you weren't over powering the speakers but couldn't find anything on the amp. Regardless, the steps above will help you determine where the problems lies.

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Can you please describe the exact configuration that you are using? (Mixer-Amp-speaker) Also, please describe the current settings for the crossover.



Aug 05, 2009 | Amplifiers & Preamps

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Kenwood LPS 5000D

Hi cw10k

Thats odd. The only passive radiators I have seen over the years have been the same size as the bass driver. They need to be this way to provide the correct tracking of the bass driver. Your speakers sound more like a a 3 way system that may have been modded. Unfortunately they pre-date the internet by the looks of it :) I cant find any info for them, and from my recollection. Kenwood never made anything notable in loudspeakers. I suggest checking the crossover of the speakers to see if they look original, or if indeed they are 3 ways. If there is only a capacitor to the tweeter, then they were never meant to be performance loudspeakers,and probably came with a system of sorts. Keeping in mind the cost of replacement drivers to do upgrades to this sort of gear, may make them uneconomic to repair or upgrade. In Australia(they do deliver world wide) you can get passive radiators from Speaker Bits
Got any thoughts on that. :)


Jul 17, 2008 | Amplifiers & Preamps

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After examining a picture of a 5802 ( I have been servicing adcom for over 20 years ), these are not bi amp posts, but bi wire posts.

Bi-amp means that 2 amps are being used, one for highs, one for lows. This means that you have no crossovers in the speakers, instead, you have an electronic crossover between the amps and the pre-amp. The highs and lows are separated in the electronic crossover. One amp handles the lows, one handles the highs.

Bi-wire means that you have the crossovers still inside the speakers. The amp handles the full range of music ( highs-mids-lows ). Different kinds of speaker wire produce different results. If you have bi-Wire terminals on your speaker, they come with shorting wires, that tie the tweeter + to the woofer + on the back of the speaker, and the tweeter - to the woofer - . When the shorting wires are removed completely, you have now electrically separated the tweeter and woofer from each other, while maintinaing the crossovers ( inside the speaker ) for each.When this is done, you can now bi-wire the speakers and amp, and use different kinds of wire for the lower frequencies and the upper frequencies, depending on your ears ( everyone hears a little differently, thats why there are so may makers of components, and wire ).

Why do we have crossovers?.....the tweeter voice coils ( the things that make the sound ) are made of hair thin wire. This wire cannot handle much power and if you were to put bass in to a tweeter, you would burn the tweeter out almost instantly. A tweeter is a very light, fast moving device which can react very quickly to high frequency sounds ( symbols, triangles, guitar strings....). Woofers are more rugged. They have voice coils made of heavier wire and are designed for larger movements that Bass demands. Subsequently, woofers aren't very good for high frequencies because they are slower devices.

So what do we do ?.....Keep the lows away from the tweter and the highs away from the woofer.....thats the job of the crossover.

In the event that your speaker has the crossover OUTSIDE the speaker box, you should check ( as always ) with the manufacturer of the speaker to see how it can be changed to suit your needs. Remember to always read and follow your owners manual. Good luck....Rob

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Helo you have to use speaker of the same wattage you have now chage crossover to get new clear digital soud

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