2 way, but ocasionally 3 way

terteliu · 08:50 PM

I have now the following :

1. a 2 way cabinet with the crossover 12 db/octave, the tweeter has reversed polarity.

2. a woofer 12 db/octave.

I want to build an "output"( a high pass 6db/octave) from the woofer to atach the 2 way cabinet, transforming it into a satelite

By doing this, then the mid is out of phase with the woofer,the tweeter is already reversed inside the box.

If I reverse the polarity of the whole 2 way cabinet, would this solve the problem of being out of phase?

I still want to be able to use the 2 way, as I use now, and from time to time, to atach it to the woofer, when partying.

terteliu · 28th August 2011, 10:10 PM

If I reverse the polarity of the whole 2 way system, by connecting - to + and + to -, will this afect the function of the crossover? I've googled "reverse polarity before crossover" and after an hour, I still haven't found if it will work.

Practically by using a working woofer, and a working 2 way speaker, I want to make a 3 way, but only by ataching an output to the woofer with a 6 db crossover. I will then power only the woofer with one of the channels of the stereo amplifyer, and the same for the other channel. (2 woofers, 2 satelites)

Moondog55 · 29th August 2011, 12:00 AM

Single dual coil woofer or 2 separate woofers??
0.5 set-up. got one in my bedroom.
use BOTH channels to both speakers using a biggish coil on each woofer, mine uses ~10mH on the 0.5 woofer
Cheap easy and worth the time in my opinion.
Polarity is easy enough to play with after you have built it but first order same polarity usually, so + -> +

terteliu · 05:54 AM

there are 2 separate woofers

When I had the ideea, I put both crossovers in the passive crossover designer, and I saw that the woofer and the mid bass of the 2 way speaker are out of phase.

If I open the 2 way and reverse both of the speakers, I thing that when I listen without the woofer, the sound would suffer, so I was thingking, that only when I connect the 2 way to the woofer, to reverse the +/- at the entry of the 2 way

Both woofer have 7 mh and 68 uf.

Moondog55 · 29th August 2011, 06:16 AM

I'd use a first order only for the point 5, so try the designer again using a first order and see what it looks like.
Remember that there is no high pass just the smaller woofer running fulland the 0.5 woofer taking some of the bass

terteliu · 29th August 2011, 10:35 AM

I've ordered a 10mH, and I will listen and then adjust if I can

28th August 2011, 08:43 PM	#1
terteliu diyAudio Member Join Date: Mar 2011 Location: Bucharest	2 way, but ocasionally 3 way I have now the following : 1. a 2 way cabinet with the crossover 12 db/octave, the tweeter has reversed polarity. 2. a woofer 12 db/octave. I want to build an "output"( a high pass 6db/octave) from the woofer to atach the 2 way cabinet, transforming it into a satelite By doing this, then the mid is out of phase with the woofer,the tweeter is already reversed inside the box. If I reverse the polarity of the whole 2 way cabinet, would this solve the problem of being out of phase? I still want to be able to use the 2 way, as I use now, and from time to time, to atach it to the woofer, when partying. Last edited by terteliu; 28th August 2011 at 08:50 PM.

29th August 2011, 12:00 AM	#3
Moondog55 diyAudio Member Join Date: Jun 2007 Location: Norlane; Geelong: Victoria: Australia	Single dual coil woofer or 2 separate woofers?? 0.5 set-up. got one in my bedroom. use BOTH channels to both speakers using a biggish coil on each woofer, mine uses ~10mH on the 0.5 woofer Cheap easy and worth the time in my opinion. Polarity is easy enough to play with after you have built it but first order same polarity usually, so + -> + __________________ QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"

29th August 2011, 05:38 AM	#4
terteliu diyAudio Member Join Date: Mar 2011 Location: Bucharest	there are 2 separate woofers When I had the ideea, I put both crossovers in the passive crossover designer, and I saw that the woofer and the mid bass of the 2 way speaker are out of phase. If I open the 2 way and reverse both of the speakers, I thing that when I listen without the woofer, the sound would suffer, so I was thingking, that only when I connect the 2 way to the woofer, to reverse the +/- at the entry of the 2 way Both woofer have 7 mh and 68 uf. Last edited by terteliu; 29th August 2011 at 05:54 AM.

29th August 2011, 06:16 AM	#5
Moondog55 diyAudio Member Join Date: Jun 2007 Location: Norlane; Geelong: Victoria: Australia	I'd use a first order only for the point 5, so try the designer again using a first order and see what it looks like. Remember that there is no high pass just the smaller woofer running fulland the 0.5 woofer taking some of the bass __________________ QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"

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28th August 2011, 10:10 PM	#2
terteliu diyAudio Member Join Date: Mar 2011 Location: Bucharest	If I reverse the polarity of the whole 2 way system, by connecting - to + and + to -, will this afect the function of the crossover? I've googled "reverse polarity before crossover" and after an hour, I still haven't found if it will work. Practically by using a working woofer, and a working 2 way speaker, I want to make a 3 way, but only by ataching an output to the woofer with a 6 db crossover. I will then power only the woofer with one of the channels of the stereo amplifyer, and the same for the other channel. (2 woofers, 2 satelites)

29th August 2011, 10:35 AM	#6
terteliu diyAudio Member Join Date: Mar 2011 Location: Bucharest	I've ordered a 10mH, and I will listen and then adjust if I can

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