help pls...about crossover watts

[ian707]

i want to convert my 3way kenwood crossover 100watts to 500 watts because my sub can handle 400watts...do i need to change capacitor???or watts sorry i'm a noob

 

[Pano]

Is this for car or for home? Can you give more details on the crossover?

 

[nigelwright7557]

A circuit diagram would be useful.

If its higher power in then capacitors might need to be a higher voltage.
You might have to rewind inductors with heavier gauge wire.

 

[ian707]

An externally hosted image should be here but it was not working when we last tested it.

umh do i need to change capasitor? help pls...thaks for the reply

 

[Cal Weldon]

I can't open the attachment.

 

[ian707]

i'm sorry here it is hope it works this time .... ImageShack® - Online Photo and Video Hosting

 

[Cal Weldon]

Those are rather lightweight XO's I would consider starting from scratch either passive or better, active perhaps even a fixed PLLXO. (passive line level crossover)

 

[ian707]

i have a very basic knowledge...in electronics. umh sir Cal Weldon how about making only a crossover only for my sub? it is 400watts...can you help me ^_^ like pictures for making it procedure sorry for disturbing you sir..I really want to make one for my sub..thank you very much for the rep sir.

 

[Cal Weldon]

Ok,
1. would you like to have it as caps and coils - something you hide in the cabinet?
2. Would you like to have it electronic so that you can adjust the XO frequency?
3. Do you know the frequency you want to XO it at?
4. Do you have another amplifier that you can run the woofer with?
5. Have you considered a plate amp?

 

[ian707]

1..yes sir Cal Weldon
2.. nxt tym kinda complicated for me sir ^_^
3...30hz
4....yes
5..maybe in future

sir Cal Weldon thank you Very much...

 

[Cal Weldon]

#3. If you want a high frequency cut off of 30 hz, then you best go line level as the cost of the materials will be too much with caps and coils at speaker level. This is a lot lower than most persons choose. What are the specs of your driver?

 

[ian707]

aw im realy noob at this... here's the spec sir power handling 400watts impedance 4 Ohms sensitivity 90db @ 1w 1m freq. res. 30hz -5 khz...

i will follow your suggestion sir Cal Weldon

 

[Cal Weldon]

Ok, this makes more sense. You don't want to cut this off at 30 hertz, more likely around 100. You know I think since you already have another amplifier that you need something like this:
Reckhorn.com
It's relatively cheap for what you get. Can you tell us what the amplifier you are going to use is? You have a preamp to run both amplifiers?

 

[ian707]

i dont have preamp sir Cal Weldon...

 

[Cal Weldon]

I am getting a bit of a complex being called sir. Please refer to me as Cal or Gordon.

If you are not familiar with the inside of an amplifier then a PLLXO might be out of the question so now we need to find you a parts store that sell big caps and coils. Too bad, this is going to get expensive. Do you have any other info on the speakers? What make and model are they? We need some more specs.

 

[Cal Weldon]

This is about as affordable as we can make it for you. If you have one woofer you'll need one of these run in series
Erse Super Q 13mH 16 AWG 500W Inductor
and three of these run in parallel, shunting the woofer
68uF 100V Non-Polarized Capacitor

 

[ian707]

targa x-120-i DVC... umh how about this caps are they usable? Cal ImageShack® - Online Photo and Video Hosting

 

[Cal Weldon]

No those caps are not usable.

The woofer you have is a DVC that means you will need 2 coils and 6 caps. You also have to make sure your amp is happy with 4 ohms. Is this a separate amp from the main speakers or are you try to use the B speaker switch?

Is this in a car?

 

[ian707]

Cal Weldon.. its a separate amp from the speaker....what is a b speaker switch? what caps do i need and coils? not in car.....

 

[Cal Weldon]

How do you run your source through two amps without a preamp?