i was wondering if any of you know how or have modified a crossover so it gives a 2ohm load instead of 4, i have seen this on the net before, was just wondering what it involved. would save some money on ampimg if i could go with a an amp that puts out 75-100 watts @2omhs.... thanx in advance guys
Replies (6)
swez on 08/3/2005 15:46:34
Do you mean you want a crossover that is tuned for a 2 ohm load and filters at same frequencies? If yes, it can be done by swapping cap and inductor values in the crossovers.
There is a chart i n the DIY section that tells the values of Caps. If you need coil values too, bcea1 has all that as well.
http://www.clubknowledge.com/Car_Audio_FAQ/?t25
http://www.bcae1.com/passxovr.htm
Swez
MrBrownstone on 08/4/2005 12:56:25
What you save in amp cost might results in the cost of aggravation. going from 60Wx2 @ 4ohms to 100Wx2 @ 2 ohms might not be a whole lot of power difference anyway.
Just give that some thought
compvr15s on 08/4/2005 14:01:53
yea i realized that, im not that inclined to do the job anyway, want to get a new vehicle before i buy anything anyway, dont want to buy 6.5 compenents now and the vehicle can only handle 5.25, lol know what i mean.... for once im going to take my time plan things out and then go from there..... i just heard of this idea on the net and didnt know how easy/hard it would be...
swez on 08/4/2005 15:01:58
It's not rocket science to swap caps on a board, if you can find the proper values in sizes that fit the original cap locations. The coils are a diiferent story though
Not sure it will buy you much for the effort though. Complex crossovers will eat up amping power by a few to several dB. That's the biggest draw back to passives.
Swez
compvr15s on 08/4/2005 15:18:11
thanx swez, i didnt know that about xovers. so it would prolly not benifit at all, just run my amps harder lol.... thanx for the heads up....
swez on 08/4/2005 18:59:08
You bet Compvr!
Passive crossovers do work, but there is a price to pay when using them in complex filtering networks. Not such a big loss for tweeters or midrange as they are generally very efficient at rated frequency bands.
However, when doing subs and MB drivers, it's best to use active crossovers when possible as they have no "insertion losses" associated with them. This allows max amping power to flow directly to woofers and MB drivers. They need the power as these are usually the lowest efficiency drivers and require the most power to get them up to full performance.
Swez
Replies (6)
swez on 08/3/2005 15:46:34
Do you mean you want a crossover that is tuned for a 2 ohm load and filters at same frequencies? If yes, it can be done by swapping cap and inductor values in the crossovers.
There is a chart i n the DIY section that tells the values of Caps. If you need coil values too, bcea1 has all that as well.
http://www.clubknowledge.com/Car_Audio_FAQ/?t25
http://www.bcae1.com/passxovr.htm
Swez
MrBrownstone on 08/4/2005 12:56:25
What you save in amp cost might results in the cost of aggravation. going from 60Wx2 @ 4ohms to 100Wx2 @ 2 ohms might not be a whole lot of power difference anyway.
Just give that some thought
compvr15s on 08/4/2005 14:01:53
yea i realized that, im not that inclined to do the job anyway, want to get a new vehicle before i buy anything anyway, dont want to buy 6.5 compenents now and the vehicle can only handle 5.25, lol know what i mean.... for once im going to take my time plan things out and then go from there..... i just heard of this idea on the net and didnt know how easy/hard it would be...
swez on 08/4/2005 15:01:58
It's not rocket science to swap caps on a board, if you can find the proper values in sizes that fit the original cap locations. The coils are a diiferent story though
Not sure it will buy you much for the effort though. Complex crossovers will eat up amping power by a few to several dB. That's the biggest draw back to passives.
Swez
compvr15s on 08/4/2005 15:18:11
thanx swez, i didnt know that about xovers. so it would prolly not benifit at all, just run my amps harder lol.... thanx for the heads up....
swez on 08/4/2005 18:59:08
You bet Compvr!
Passive crossovers do work, but there is a price to pay when using them in complex filtering networks. Not such a big loss for tweeters or midrange as they are generally very efficient at rated frequency bands.
However, when doing subs and MB drivers, it's best to use active crossovers when possible as they have no "insertion losses" associated with them. This allows max amping power to flow directly to woofers and MB drivers. They need the power as these are usually the lowest efficiency drivers and require the most power to get them up to full performance.
Swez
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