Has anyone used ferrofluid in an Audax TW034 tweeter and what results did you have?
Are there any potential compatibility issues with VC winding insualtion, former and adhesives?
I'm curious if there are any thermal power handling benefits so the tweeter can be pushed a little harder crossed over lower in a high power 2 way design.
Are there any potential compatibility issues with VC winding insualtion, former and adhesives?
I'm curious if there are any thermal power handling benefits so the tweeter can be pushed a little harder crossed over lower in a high power 2 way design.
How much extra power do you want to apply?
It is specified 8 ohms, 70 W, 93 dB
I remember Troels recounting that the DTQWTII - which he designed with that tweeter and a waveguide - was used for a high-powered party and what broke was the suspension of the midwoofer.
He did not mention anything about TW034, which suggests that he resisted the abuse.
On the other hand, I have never used ferrofluid, but I imagine you may have problems there if the tweeter was not designed for that use .....
I think a horn will help to have more SPL instead of adding ferrofluid.
It is specified 8 ohms, 70 W, 93 dB
I remember Troels recounting that the DTQWTII - which he designed with that tweeter and a waveguide - was used for a high-powered party and what broke was the suspension of the midwoofer.
He did not mention anything about TW034, which suggests that he resisted the abuse.
On the other hand, I have never used ferrofluid, but I imagine you may have problems there if the tweeter was not designed for that use .....
I think a horn will help to have more SPL instead of adding ferrofluid.
I want to run the tweeter down lower in a waveguide and dampen the primary resonance a bit. I was hoping to get multiple benefits from this, but mainly get better thermal power handling in a continuous higher SPL setting.
The TW034 tweeter is quite easy to disassemble and assemble, so maybe you can do the experiment and tell us about it. According to the attachment there would be no drawbacks and it would improve the thermal tolerance you are looking for. I don't know if that means you can cross it lower, that depends on the current xover, that is the cross with the mid woofer and the slope it currently has. Surely if you provide all the data, the forum experts (there are many good ones) will answer you with more authority than me.
Information about ferro fluid cooled tweeters
" My tweeters do not have ferrofluid, will they profit from ferrofluid?
Yes, applying ferrofluid will increase the power handling of your tweeters as well as improve the sound quality, as long as you apply the correct amount of ferrofluid and the correct quality."
Information about ferro fluid cooled tweeters
" My tweeters do not have ferrofluid, will they profit from ferrofluid?
Yes, applying ferrofluid will increase the power handling of your tweeters as well as improve the sound quality, as long as you apply the correct amount of ferrofluid and the correct quality."
I'm just looking for someone who may have tried doing this already so I can find out whether it's worth trying and potentially void ruining a good set of tweeters. The TW034 does come apart easy but there's risk involved. They have a sticky surface on the voice coil assembly flange that can get torn apart and pull out the lead in wires. I usually drill out the pole piece on these to lower the primary resonance a bit, so i know the procedure.
I may just risk this on the new pair I have depending on whether I get any decisive answers to my thread. Worst case is I'm out 80 bucks on 2 new VC assemblies, but it would be nice to hear if anyone did this and save me from ruining a good set of tweeters. After all, thats what I'm trying to avoid in the first place by doing this experiment.
I may just risk this on the new pair I have depending on whether I get any decisive answers to my thread. Worst case is I'm out 80 bucks on 2 new VC assemblies, but it would be nice to hear if anyone did this and save me from ruining a good set of tweeters. After all, thats what I'm trying to avoid in the first place by doing this experiment.
It's an unusual question because most people remove ferrofluid to try and improve sound quality. I've not heard anyone do it the other way round.
I agree, but there are some situations I've run into where removing it worsened the sound. An older KEF T33 sounded worse without ferrofluid. Another exception was a fostex super tweeter (don't remember the model number). My Seas 27TFFC sounded better without it as did some of the older Vifa models I had laying around.
I've learned to keep an open mind with this and also discovered that its very critical how much and what kind of ferrofluid you add. The thing I'm mainly concerned about is compatibility of the adhesives and VC winding enamel. I can't find any info on what type of carrier oil is used in common commercially available ferrofluid.
I've learned to keep an open mind with this and also discovered that its very critical how much and what kind of ferrofluid you add. The thing I'm mainly concerned about is compatibility of the adhesives and VC winding enamel. I can't find any info on what type of carrier oil is used in common commercially available ferrofluid.
Hi,
I wonder if Audax has not made a no FF version of this tweeter as there were 2 reference ??? Or maybe the second onr was an OEM for a brand, can not remember but I know toutlehautparleur is selling parts for it as several shop still.
They used a very light almost not particles charged FF for the T33.
If you want to try the Troels WG, I beleive the cheapest adress is Rumoh shop. What I could try is to apply some thermal past between the Tweeter and the aluminium WG to enhance the cooling... while certainly it's more the center inner of the motor that needs cooling and of course the voice coil winding.... Also a possible thing is a trade off : divide per two the FF quantity or use a light one. Sorry I have not the ref of what grade they used though. If you passive filtering, that's still the cap quality that counts according my experience, more than many would hear. SCR tin foil cap works pretty good, of course there are a lot else, but at the end if caps are more expensive than they should, it's really makes noo sense to save monney here if you found your ideal loudspeaker. (copper caps makes sense too if money is on your side)
Keep the open mind 🙂
I wonder if Audax has not made a no FF version of this tweeter as there were 2 reference ??? Or maybe the second onr was an OEM for a brand, can not remember but I know toutlehautparleur is selling parts for it as several shop still.
They used a very light almost not particles charged FF for the T33.
If you want to try the Troels WG, I beleive the cheapest adress is Rumoh shop. What I could try is to apply some thermal past between the Tweeter and the aluminium WG to enhance the cooling... while certainly it's more the center inner of the motor that needs cooling and of course the voice coil winding.... Also a possible thing is a trade off : divide per two the FF quantity or use a light one. Sorry I have not the ref of what grade they used though. If you passive filtering, that's still the cap quality that counts according my experience, more than many would hear. SCR tin foil cap works pretty good, of course there are a lot else, but at the end if caps are more expensive than they should, it's really makes noo sense to save monney here if you found your ideal loudspeaker. (copper caps makes sense too if money is on your side)
Keep the open mind 🙂
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I have disarmed and armed them and I did not see that problem, you just have to have a good pulse.
You say that the most you can lose is little money, but you wouldn't like it either.
It's understandable.