AsciLab speakers are about to launch

[Petrushka]

It's at the point where I'm starting to worry about heat dissipation.

The only downside to active is repair ten years later. Sonos has something like 17 amps in the new soundbar.

It’s going to be hell trying to diagnose a failure in just one. Or even notice.

 

[kharan]

The only downside to active is repair ten years later. Sonos has something like 17 amps in the new soundbar.

It’s going to be hell trying to diagnose a failure in just one. Or even notice.

I have hopes that 10-15 years on from now, should it fail, we can plonk another Hypex plate with the same dimensions as the current one into an active A6B.

 

[AudioJester]

I have hopes that 10-15 years on from now, should it fail, we can plonk another Hypex plate with the same dimensions as the current one into an active A6B.

Just the same as swapping out dac, amps etc. with passive speakers.

The problem with actives only arises when it is some custom electronics.

 

[Petrushka]

Just the same as swapping out dac, amps etc. with passive speakers.

The problem with actives only arises when it is some custom electronics.

To hold down cost, it going to be mostly custom.

 

[JohnnyNG]

I have hopes that 10-15 years on from now, should it fail, we can plonk another Hypex plate with the same dimensions as the current one into an active A6B.

Or just keep a passive A6B crossover on hand as a backup since they're swappable.

 

[AudioJester]

To hold down cost, it going to be mostly custom.

Not sure I follow what your trying to say?
Ascilabs have said there using Hypex Fusion plate amps - brilliant things!. Its an off the shelf item - you can buy one now.
Do you mean they are modifying the electronics? Seems like that would increase costs!

Edit: unless i got it wrong and they are not using hypex fusion?

 

[kemmler3D]

It's at the point where I'm starting to worry about heat dissipation.

I think that might be valid. The baseline sensitivity of the Purifi woofer is 89dB. So however much you're pumping into that thing, about half of the power is going... somewhere else.

 

[kharan]

Just the same as swapping out dac, amps etc. with passive speakers.

The problem with actives only arises when it is some custom electronics.

The plates are not custom, so assuming Hypex isn't changing the dimensions if/when they update the design, you can swap them and preserve the seal and general shape of the speaker.

Not sure I follow what your trying to say?
Ascilabs have said there using Hypex Fusion plate amps - brilliant things!. Its an off the shelf item - you can buy one now.
Do you mean they are modifying the electronics? Seems like that would increase costs!

Edit: unless i got it wrong and they are not using hypex fusion?

They are using Hypex plates. It's possible they are some other passive components after that to alter the electrical behaviour of the driver (for example, a notch filter to tame a resonance), but I don't know if they are doing that.

In any case, the amp plate is not custom.

I think that might be valid. The baseline sensitivity of the Purifi woofer is 89dB. So however much you're pumping into that thing, about half of the power is going... somewhere else.

I think it's the one with a 86.8 dB, but yes, I agree, that power has to go somewhere. It's not all converted into sound, so there's some amount to heat produced. If the speaker needs to dissipate 15 W average rather than 3 W during playback at normal volume, that's not nothing. Mind you, I assume Ascilab has tested it .

 

[Petrushka]

Not sure I follow what your trying to say?
Ascilabs have said there using Hypex Fusion plate amps - brilliant things!. Its an off the shelf item - you can buy one now.
Do you mean they are modifying the electronics? Seems like that would increase costs!

Edit: unless i got it wrong and they are not using hypex fusion?

Hypex plates are $600 or so. Seventeen of them are not going in any speaker. Sonos sells speakers for a few hundred bucks that have three amps. Do the plates have two or three amps?

To be an audible improvement over passive speakers, they need to have multi-channel DSPs. Perhaps there will be inexpensive standardized amp/DSP modules. Considering Fosi can retail an amp for $50, I’m guessing someone could make three channel amps for few hundred dollars. They won’t have to be high powered and won’t have to cope with weird impedances.

 

[AsciLab]

Max SPL is tested by IEC 60268 multi-tone signal. You don’t have to use whole 500W beefy amp. 250W will be great too. It’s only for Max SPL above 100Hz. So we wrote it as “Up to xxxW”

Yes. 82dB sensitivity of A6B quite low. But it’s because of Purifi woofer. It has higher Mms than typical to get low Fs so its sensitivity must be low. 86.8 or 89dB sensitivity of specsheet (maybe Alu and Paper?) is for IB response. When it is mounted on small baffle there will be baffle step effect. So low frequency sensitivity typically gets -6dB down. If we do not compensate mid to high frequency to bass level, it would have too less bass.

That’s why the sensitivity is pretty low. But the driver also has enough long excursion and high power handling to be driven loud, you don’t have to worry, only needs beefy amp. And Purifi guys also prepared that too.

 

[JohnnyNG]

Hypex plates are $600 or so. Seventeen of them are not going in any speaker. Sonos sells speakers for a few hundred bucks that have three amps. Do the plates have two or three amps?

To be an audible improvement over passive speakers, they need to have multi-channel DSPs. Perhaps there will be inexpensive standardized amp/DSP modules. Considering Fosi can retail an amp for $50, I’m guessing someone could make three channel amps for few hundred dollars. They won’t have to be high powered and won’t have to cope with weird impedances.

From previous renderings it looks like the A6B Active is using the FusionAmp FA252 which is 2 x 250W and has IIR and FIR filter options:

Hypex FusionAmp FA252 with on-board SMPS and DSP

The Hypex FA252 has two 250 Wrms Ncore® amplifiers which can be bridged to form one 500 Wrms amplifier. Output power: 4Ω: 2x 250W, 8Ω: 2x 150W

www.diyclassd.com

AsciLab speakers are about to launch

Higher density just changes the resonant frequency, metal resonates like crazy, e.g. bells. Does this material also have damping qualities? It has a density 2-3 times higher than MDF but a tensile modulus similar to MDF and HDF, giving it good damping qualities. Is the white bit around the...

www.audiosciencereview.com

 

[Sokel]

One of the benefits of low sensitivity combined with Fusion amps is a decent gain structure.Just like with strong sources combined with low gain amps.

Imagine the other way around,using it with a 100dB sens driver.Normal listening levels should be at -50dB leaving the amp at about 50-60dB THD+N instead of their stated 100dB.

 

[Matias]

The Purifi woofer is awesome, I am so glad to trade sensitivity to extended bass and lowest distortion.

 

[JohnnyNG]

The Purifi woofer is awesome, I am so glad to trade sensitivity to extended bass and lowest distortion.

Absolutely. The sensitivity has been listed on Spinorama for months now and is a fully expected, easy trade for the low end performance. The 500w power handling is a welcome surprise to me.

 

[kharan]

Max SPL is tested by IEC 60268 multi-tone signal. You don’t have to use whole 500W beefy amp. 250W will be great too. It’s only for Max SPL above 100Hz. So we wrote it as “Up to xxxW”

Yes. 82dB sensitivity of A6B quite low. But it’s because of Purifi woofer. It has higher Mms than typical to get low Fs so its sensitivity must be low. 86.8 or 89dB sensitivity of specsheet (maybe Alu and Paper?) is for IB response. When it is mounted on small baffle there will be baffle step effect. So low frequency sensitivity typically gets -6dB down. If we do not compensate mid to high frequency to bass level, it would have too less bass.

That’s why the sensitivity is pretty low. But the driver also has enough long excursion and high power handling to be driven loud, you don’t have to worry, only needs beefy amp. And Purifi guys also prepared that too.

Hello,

Can you share what kind of damping material is used and how the speakers are filled?

 

[AsciLab]

Hello,

Can you share what kind of damping material is used and how the speakers are filled?

Typical poly wool is used. How.. is hard to describe.

 

[kharan]

Typical poly wool is used. How.. is hard to describe.

oh, just a picture if you have it already, nothing fancy. Mostly want to know if it's a very damped speaker or a less damped one.

 

[AsciLab]

oh, just a picture if you have it already, nothing fancy. Mostly want to know if it's a very damped speaker or a less damped one.

It is about 30% volume of damping material.

 

[JohnnyNG]

Looks like all the action's happening on the other thread.

https://audiolabinsight.com/t/ascilab/143/452

I could really go for an A6B like this!

 

[Esprit]

Perfect for me as an Inter fan…