They are less inductive than regular ones.reply
Use the high power resistor with the white rectanglar ceramic case come in various wattages 3w,7w,10w and many different ohms.[These type are very cheap] 19 p each inc vat
www.maplin.co.uk
Use the high power resistor with the white rectanglar ceramic case come in various wattages 3w,7w,10w and many different ohms.[These type are very cheap] 19 p each inc vat
www.maplin.co.uk
Yes the ceramic white usually are very nasty sounding.
Try RS Components.They have very nice Welwyn wirewound power resistors here: http://www.infoel.rspolska.com/cgi-...l01ie&3240686914=3240686914&catoid=-988923345
Bartek
Try RS Components.They have very nice Welwyn wirewound power resistors here: http://www.infoel.rspolska.com/cgi-...l01ie&3240686914=3240686914&catoid=-988923345
Bartek
Apart from the microscopic measure, I think the term "inductive" needs to be clarified in this case (at least for me). If a resistor reacts against a magnet bar, what do you call this resistor?
In my current Aleph setup I use Painton wirewound (made in England) for the MOSFET Source. This resistor doesn't react against magnetic field, as opposite to Dale resistor (The common black one)
There are debates about resistor performance. In this case it will be less subjective because the implementation would be in the crossover, probably in series with the tweeter. And anybody know why it has to be wire-wound?
After trying several expensive resistors in audio circuits, hell, I had to go back to the Allen Bradley (Carbon Composite). I have never done much experimentation on crossovers, but since then I also used Allen bradley in my crossovers. Weird? Yes, but my imagination told me that I could "hear" the difference with Dale, Ceramic, VTM, Panasonic (the cheap green one) and several unknown resistors. Exactly the same effect as it's use in audio circuits. I wonder if anyone have ever tried this resistor in crossovers and would report the result.
Oh, and I always agree with Frank. I believe Peranders also will.
In my current Aleph setup I use Painton wirewound (made in England) for the MOSFET Source. This resistor doesn't react against magnetic field, as opposite to Dale resistor (The common black one)
There are debates about resistor performance. In this case it will be less subjective because the implementation would be in the crossover, probably in series with the tweeter. And anybody know why it has to be wire-wound?
After trying several expensive resistors in audio circuits, hell, I had to go back to the Allen Bradley (Carbon Composite). I have never done much experimentation on crossovers, but since then I also used Allen bradley in my crossovers. Weird? Yes, but my imagination told me that I could "hear" the difference with Dale, Ceramic, VTM, Panasonic (the cheap green one) and several unknown resistors. Exactly the same effect as it's use in audio circuits. I wonder if anyone have ever tried this resistor in crossovers and would report the result.
Oh, and I always agree with Frank. I believe Peranders also will.
Mills and RCD
Both mills and RCD make great non-inductive wire wound resistors. I have test these resistors using impulse and square waves at 4 MHz and they look good. Of course they maybe some inductance in the resistor but that true for most all passive components at some frequency.
As for carbon compositions, I stay clear of them for audio. Having said that, they work ok for Guitar amps and some high voltage application.
Both mills and RCD make great non-inductive wire wound resistors. I have test these resistors using impulse and square waves at 4 MHz and they look good. Of course they maybe some inductance in the resistor but that true for most all passive components at some frequency.
As for carbon compositions, I stay clear of them for audio. Having said that, they work ok for Guitar amps and some high voltage application.
Hi Jay,
That would be a magnetic resistor, it could be inductive or not.
The magnetism comes from the use of ferrous content, either in the resistive layer, wire or endcaps and leadout wires.
So, in theory, you could have a non-inductive yet magnetic resistor.
The Painton WW resistors were said to sound really well. Unfortunately they're out of business for a number of years already. There may be some NOS left but not much IMHO.
It doesn't have to be WW types.
It's just that the higher power dissipation resistors inevitably are of that type if you want a single component.
As with anything else, here too sound quality can vary alot.
Although I feel they should be non-magnetic, the fact that most are inductive isn't a big problem.
A good, ear-tuned x-over can take this into account as most use inductors already.
This, however, will be entirely design dependent and I can well imagine that replacing these inductive resistors with non-inductive ones would alter the perceived result sonically.
To my mind, there's no reason why one wouldn't here the same differences amongst components in x-overs.
This is a known fact amongst the better speaker designers,so it's likely not just your imagination.
Cheers,
That would be a magnetic resistor, it could be inductive or not.
The magnetism comes from the use of ferrous content, either in the resistive layer, wire or endcaps and leadout wires.
So, in theory, you could have a non-inductive yet magnetic resistor.
The Painton WW resistors were said to sound really well. Unfortunately they're out of business for a number of years already. There may be some NOS left but not much IMHO.
It doesn't have to be WW types.
It's just that the higher power dissipation resistors inevitably are of that type if you want a single component.
As with anything else, here too sound quality can vary alot.
Although I feel they should be non-magnetic, the fact that most are inductive isn't a big problem.
A good, ear-tuned x-over can take this into account as most use inductors already.
This, however, will be entirely design dependent and I can well imagine that replacing these inductive resistors with non-inductive ones would alter the perceived result sonically.
To my mind, there's no reason why one wouldn't here the same differences amongst components in x-overs.
This is a known fact amongst the better speaker designers,so it's likely not just your imagination.
Cheers,
Apologies for being anal, but what speakers use an inductor in series with the tweeter??
I have tried only two tpyes of resistor in speaker x-overs: the crap white ceramic ones, and MOX (metal oxide) from Audiocom ( http://www.audiocom-uk.com/ ) (their new site is only half finished
). MOX is a fair improvement over the nasty white ones.What does one buy to upgrade from MOX?? There must be something better...
Audiocom sells:
Precision foil resistors (£4/5 each,50ppm temp.,1% tol.,3w)
Vishay VSRJ Bulk Metal Foil (£5 and up,4ppm temp.,1% tol.,?w)
Precision Wire Wound (? details ?)
MOX (1 or 5% iirc, and ~ 60 pence each)
Anyone know what any/all these sound like in x-overs?
Cheers,
Simon
Hi,
The sentence says x-over, not just tweeter section.
I assume they sound pretty much the same as when used in active circuits.
Probably the easiest way to find out is to try some equal value/wattage resistors of various makes and technogoly in series with the speaker cable and have a listen.
Cheers,
The sentence says x-over, not just tweeter section.
I assume they sound pretty much the same as when used in active circuits.
Probably the easiest way to find out is to try some equal value/wattage resistors of various makes and technogoly in series with the speaker cable and have a listen.
Cheers,
Thank's for the great answers, Frank.
[QUOTEApologies for being anal, but what speakers use an inductor in series with the tweeter??[/QUOTE]
Most old amplifier designs use inductor (usually in parallel with resistor) in the output to combat oscillation or uncertainty with the speaker/crossover impedance (This approach is still used in modern hi-end amplifiers). And this inductor is in series with the tweeter. (If only this is relevant to the question)
[QUOTEApologies for being anal, but what speakers use an inductor in series with the tweeter??[/QUOTE]
Most old amplifier designs use inductor (usually in parallel with resistor) in the output to combat oscillation or uncertainty with the speaker/crossover impedance (This approach is still used in modern hi-end amplifiers). And this inductor is in series with the tweeter. (If only this is relevant to the question)
Aha, very interesting! I've heard of the amp inductor, I'll just keep quiet now...
Fred, putting them in series with the whole speaker sounds like a great way of testing them out... except I'd have to spend a fortune to do it, and the ones I didn't use would be wasted
Maybe this is possible for others.
One more thing: I don't know what they sound like in active circuits either
-Simon
Fred, putting them in series with the whole speaker sounds like a great way of testing them out... except I'd have to spend a fortune to do it, and the ones I didn't use would be wasted
Maybe this is possible for others.
One more thing: I don't know what they sound like in active circuits either
-Simon
Hi,
All you need is a pair of each to do some listening tests...
Otherwise I'd take the advise of other members here and try Mills,Welwyn.
Almost any quality WW resistor sounds better than those horrible white sandcast affairs to my ears.
Btw, my first name's Frank not Fred, unless you were addressing someone of course....
Maybe Russ Andrews can head you in the right direction?
Cheers,
All you need is a pair of each to do some listening tests...
Otherwise I'd take the advise of other members here and try Mills,Welwyn.
Almost any quality WW resistor sounds better than those horrible white sandcast affairs to my ears.
Btw, my first name's Frank not Fred, unless you were addressing someone of course....
Maybe Russ Andrews can head you in the right direction?
Cheers,
Hi,
Thanks Frank,
-Simon
-Yes, but when a pair is ~15Euros!!!
-Ok, I'll look 'em sometime soon, thanks
-ah, sorry Frank, I guessed... you can't see the name things when writing posts
-Russ doesn't sell resistors, but next time I order something from them I will ask what they like... they might have something to say, who knows! (they're very knowledgable)
Thanks Frank,
-Simon
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