Hi Janneman
What type of active crossover are you currently using ?
Is there any chance to convince you to stay with an active crossover (or maybe move to another type of active crossover)?
Regards
Charles
What type of active crossover are you currently using ?
Is there any chance to convince you to stay with an active crossover (or maybe move to another type of active crossover)?
Regards
Charles
Re: Jordan etc
I think that you may well lose a lot if you go to a passive XO. With 4 50mm modules you may thou be able to get away with a 1st order XO in which case i would try a series XO. It always struck me that 4 units gives more dynamics & efficiency, but sacrifies some HF focus due to the combing.
Are the 150mm drivers the JX150? it is good up to about 8k so it won't care much where you XO it, although in thinking about similar designs i have limited myself to 150 Hz for a side firing woofer.
dave
janneman said:
I think that you may well lose a lot if you go to a passive XO. With 4 50mm modules you may thou be able to get away with a 1st order XO in which case i would try a series XO. It always struck me that 4 units gives more dynamics & efficiency, but sacrifies some HF focus due to the combing.
Are the 150mm drivers the JX150? it is good up to about 8k so it won't care much where you XO it, although in thinking about similar designs i have limited myself to 150 Hz for a side firing woofer.
dave
Jordan stuff
phase_accurate, planet10,
Well, actually, the xover was passive, but between the preamp and the power amps in a bi-amp config. It was a simple 2nd order LC job, which I dumped many years ago. The drivers have been eating dust since.
The woofer indeed is the JX150, but I want to xover as low as possible to have an uninterrupted midrange which I think is important. (I must admit I am more of an electronics guy than a speaker guy).
The biamp sytem had a xover freq of 250Hz if I remember well. Since the drivers both are really wideband, I can afford a low order, say 2nd, xover. I think.
Anyway, the boxes (closed box) are designed and in the process of assembly per the Jordan recommended volumes. I made the front real narrow to avoid reflexions, just the size of the 50mm modules. Becauste the box needs a larger width for asthetic and woofer placement reasons, I used solid corners with a 2inch radius.
Do you agree to the low xover freq? Xover order?
Cheers, Jan Didden
phase_accurate, planet10,
Well, actually, the xover was passive, but between the preamp and the power amps in a bi-amp config. It was a simple 2nd order LC job, which I dumped many years ago. The drivers have been eating dust since.
The woofer indeed is the JX150, but I want to xover as low as possible to have an uninterrupted midrange which I think is important. (I must admit I am more of an electronics guy than a speaker guy).
The biamp sytem had a xover freq of 250Hz if I remember well. Since the drivers both are really wideband, I can afford a low order, say 2nd, xover. I think.
Anyway, the boxes (closed box) are designed and in the process of assembly per the Jordan recommended volumes. I made the front real narrow to avoid reflexions, just the size of the 50mm modules. Becauste the box needs a larger width for asthetic and woofer placement reasons, I used solid corners with a 2inch radius.
Do you agree to the low xover freq? Xover order?
Cheers, Jan Didden
Hi Jan
Sorry for my typos in the previous posting.
If you are interested I have also a suggestion how such a crossover could be implemented using inverting stages only.
I would even have one that is 2nd/2nd order or even three-way ones.
Regards
Charles
Sorry for my typos in the previous posting.
If you are interested I have also a suggestion how such a crossover could be implemented using inverting stages only.
I would even have one that is 2nd/2nd order or even three-way ones.
Regards
Charles
jordan loudspeakers
Ihave been useing jordan speakers for the past 10 years or so,I was drawn to them after reading his original article in hi-fi news,which I still have.The idea of an aluminum foil cone which is lighter than an electrostatic had immediate appeal. Ihave only used the jx53 in combination with the jx125 as after reading an article by someone in speaker builder there was mention of transient smear with four units.jordans webb is www.ejjordan.co.uk he only sells direct so you will have to contact him,I' sure he will be only to happy to answer all your que stions as will I ERRORS LIKE STRAWS UPON THE SURFACE FLOW THOSE WHO WOULD SEEK FOR PEARLS MUST DIVE BELOW
Ihave been useing jordan speakers for the past 10 years or so,I was drawn to them after reading his original article in hi-fi news,which I still have.The idea of an aluminum foil cone which is lighter than an electrostatic had immediate appeal. Ihave only used the jx53 in combination with the jx125 as after reading an article by someone in speaker builder there was mention of transient smear with four units.jordans webb is www.ejjordan.co.uk he only sells direct so you will have to contact him,I' sure he will be only to happy to answer all your que stions as will I ERRORS LIKE STRAWS UPON THE SURFACE FLOW THOSE WHO WOULD SEEK FOR PEARLS MUST DIVE BELOW
Re: jordan loudspeakers
If any of you are wondering where the interesting discussion on subtractive XOs that was taking place here went, it is now a new thread.
Active Subractive XOs
dave (with moderator hat on)
If any of you are wondering where the interesting discussion on subtractive XOs that was taking place here went, it is now a new thread.
Active Subractive XOs
dave (with moderator hat on)
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