| peranders |
pabo has been busy working on a masterpiece(?) with impressing results when it comes to measurements. 0.0008% distortion is not much :no:
http://www.anaview.com/Datasheets/300S.pdf
A couple of things in the datasheet:
1 forgot to mention the dimensions
2 The temperature is -103 degrees cold! :nod: a couple of "-" too many
3 Effeciency/power consumption
4 Cooling demands |
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| IVX |
Pabo, congratulations!
Seems aren't IR driver in use?
Something about loop gain? >60db?
What about sound etc (sad that THD/Freq far from flat)
peranders, by the first looking cutout is 85x75mm. |
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| classd4sure |
Hi Pabo!
Nice one :)
I do hope though, that you've got the SMPS' to sell along with them? Looks like they'll be real expensive monoblocks!~
Got an estimated price yet?
Regards,
Chris |
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| Pabo |
classd4sure
How do you mean, real expensive monoblocks?
The module is very cheap to produce thanks to our production facilities and our single sided soldering build. At high volumes (>10k per year) the price will be about 25USD each for the 300S.
The module does not need additional cooling in order to produce music into clipping in four ohms. It will be delivered on a piece of aluminum sheet with thermal connection to the secondary side of the module. This enables the module to deliver full power for long periods of time.
Datasheets on the 150S module is coming soon. |
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| richie00boy |
| Where can I find details of these products? Your www link button doesn't point to a valid website. |
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| classd4sure |
| quote: | Originally posted by Pabo
classd4sure
How do you mean, real expensive monoblocks?
The module is very cheap to produce thanks to our production facilities and our single sided soldering build. At high volumes (>10k per year) the price will be about 25USD each for the 300S.
The module does not need additional cooling in order to produce music into clipping in four ohms. It will be delivered on a piece of aluminum sheet with thermal connection to the secondary side of the module. This enables the module to deliver full power for long periods of time.
Datasheets on the 150S module is coming soon. |
Well just that you need three seperate power supplies for each module, that's damned expensive isn't it? Seems like a must for a SMPS.
Regards,
Chris |
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| richie00boy |
I made the assumption that Vdd and Vcc are low current just for the op-amp etc, and thus could be derived from the higher rails by zener of simple emitter follower/7x series regs. Same goes for Vdr.
So you would only need one transformer with a normal pair of windings. Although if this could be done onboard like UcD and ZAPpulse it would make peoples life easier. At least I guess it gives you the choice how well you want to implement these rails. |
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| Lars Clausen |
0.0008% at 100Hz 30W hmm Per Anders, you had to look real close to find that point! Otherwise up to 0.03% :D
But all in all data in the same level as UcD or slightly better.
A part from that i think it looks pretty good! It seems Anaview is a new and small family venture in south of Sweden. I can only wish you guys the best of luck in the Audio Industry! ;)
Lars Clausen |
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| classd4sure |
| quote: | Originally posted by richie00boy
I made the assumption that Vdd and Vcc are low current just for the op-amp etc, and thus could be derived from the higher rails by zener of simple emitter follower/7x series regs. Same goes for Vdr.
So you would only need one transformer with a normal pair of windings. Although if this could be done onboard like UcD and ZAPpulse it would make peoples life easier. At least I guess it gives you the choice how well you want to implement these rails. |
Hmmm, one would sure hope so anyway huh? But at 35+ volts I didn't feel comfortable making that same assumption. Sounded like three power stages to me, if that's the case unless they sell the supply for it too, and most likely switch mode, I don't think many will be able to afford this amp. Not me anyway.
I hope it does well too though, best of luck Pabo, hope your effort pays off.
Chris |
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| Pabo |
Lars Clausen
Thank you for your good lucks.
Classd4sure
A toroid transformer with five windings doesn´t cost more than a dollar more than one with two windings as long as the weight of copper isn´t much higher.
The reason why we didn´t implement the regulators onboard is that it would generate a couple of watts of losses. If the supply is derived with an SMPS or a transformer with multiple windings the losses will be much lower. Anaview will also sell transformers and supply boards suited for our applications but in most cases our customers will design their own supplies.
Bear in mind that we only sell these modules to companies and not to DIY-customers. The reason is that each customer require a certain amount of administrative time and support time so if those customers only buy two modules they will become very expensive. |
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| Lars Clausen |
Pabo: Maybe you can sell them in batches to Per-Anders, so he can service the DIY market??
How do you get rid of 6% of 300W = 18W from the PCB mounted MOSFET's? It seems hard to conduct the heat away through 1.6mm of fibre glass .. :confused:
All the best from
Lars C |
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| classd4sure |
Hi Lars,
A thermal connection to the secondary side was mentioned, cut out the fiber glass and any small insert would do? |
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| classd4sure |
| quote: | Originally posted by classd4sure
Hi Lars,
A thermal connection to the secondary side was mentioned, cut out the fiber glass and any small insert would do? |
Or some sort of around the edge clamp ? |
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| Kenshin |
"The topology used is based on a hysteresis modulated topology going through patent pending by Anaview AB. This topology shows very low distortion figures and because of its simplicity and robustness the finished products are very attractive both when it comes to functionality and cost."
hysteresis modulated topology, PAT.pending,?? |
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| classd4sure |
| quote: | Originally posted by Kenshin
"The topology used is based on a hysteresis modulated topology going through patent pending by Anaview AB. This topology shows very low distortion figures and because of its simplicity and robustness the finished products are very attractive both when it comes to functionality and cost."
hysteresis modulated topology, PAT.pending,?? |
Can't blame them for trying? Since it's with a stepped power supply the full topology is likely to be at least semi unique. |
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| Jan-Peter |
Nice looking product, congratulation!
However I am not very impressed by the specs….even the Zappulse show low THD at 100Hz. It not such a problem to achieve a low THD at very low frequency. But so must have a low THD at 10kHz!!
Of course we all know that there are the problems to get a low THD at high frequencies… ;)
To get the highest efficiency, it's smart to use different power supplies. However it's makes the product definatly more complex..
And I am curious to the patent, can you show us more? Or any paper yet?
Jan-Peter |
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| classd4sure |
| quote: | Originally posted by Jan-Peter
Nice looking product, congratulation!
However I am not very impressed by the specs….even the Zappulse show low THD at 100Hz. It not such a problem to achieve a low THD at very low frequency. But so must have a low THD at 10kHz!!
Of course we all know that there are the problems to get a low THD at high frequencies… ;)
To get the highest efficiency, it's smart to use different power supplies. However it's makes the product definatly more complex..
And I am curious to the patent, can you show us more? Or any paper yet?
Jan-Peter |
Well I'll give you this JP, from my eyes it doens't seem comparable to certain other amps if you know what I mean, and I can't see how anyone who can read a graph can honestly say that.
I think it simplifies the product and keeps on board efficiency high, like in your 700, but makes implementing it more complex, and I'm not sure I'm a fan of moving non efficient components off board just to be able to print a higher efficiency, hopefully there are better reasons for that. Of course it also moves alot of cost onto the user, in this case potentially _alot_ of the cost. However for OEM use it's more than doable. This isn't for the DIYr at all and I'm almost glad it wont' be available to us for that reason.
As to the patent, perhaps they have yet to apply, I searched and found nothing other than one granted to Pabo for a soft start circuit. Usually when people say "patent pending" they give an application #?
Regards,
Chris |
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| peranders |
| quote: | Originally posted by Lars Clausen
0.0008% at 100Hz 30W hmm Per Anders, you had to look real close to find that point! |
Yes, indeed, but you found the rest. :) |
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| peranders |
| quote: | Originally posted by Lars Clausen
How do you get rid of 6% of 300W = 18W from the PCB mounted MOSFET's? It seems hard to conduct the heat away through 1.6mm of fibre glass .. :confused:
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I wonder that also but pabo maybe ment "music" into clipping. 18 watts into almost nothing will get hot :hot: |
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| phase_accurate |
No matter how it compares to others - it definitely makes a cool impression.
From the load-dependancy it looks as if it is at least partially a post-filter NFB topology.
The low-voltage PSU issue depends on how and what the module is used for. If it is used for applications where there are other low voltage cicuits as well (preamps, active x-overs ....) it definitely has advantages. For users who just want to build a power amp it is a little disadvantageous.
Regards
Charles |
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| Kenshin |
Hysteresis + partial post-filter NFB topology... SODA or Simpw?| quote: | Originally posted by phase_accurate
No matter how it compares to others - it definitely makes a cool impression.
From the load-dependancy it looks as if it is at least partially a post-filter NFB topology.
Regards
Charles |
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| Pabo |
Some questions to be answered:
- Heat dissipation in the PCB? Well, all of the losses are not situated in the FETs so at 150W into 8 ohm we have to get rid of about 5W in the FETs. Without the mounting bracket this will not be possible continuously but only for about 30s before it shuts down. With music, it will not be a problem as the average power is only 1/8 of 150W so you can easily run the module at "full" power with music both into 8 ohms and 4 ohms.
- Patented hysteresis modulator? No, it is not the modulator that is patented. I have changed the text in order to avoid confusion.
- THD at high frequencies? We can certainly lower THD+N to below 0,02% at 6,67kHz but at the expense of lower efficiency and much higher idle losses. In my opinion a class d amplifier should have really low losses, otherwise you loose one of the key features. Extensive listening tests has shown that lowering THD+N below 0,05% at 6,67kHz does not improve the sound quality further. |
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| peranders |
| I read here that Anaview is joining their forces with Hypex. Good luck. :nod: |
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| classd4sure |
So what's ground breaking about the pumping equalization circuit... still using multiple rails?
Good luck with the THX 2 ultra spec. Keep us posted on that.
Any chance of changing the font on the news site to something that doesn't make one blind?
Cheers |
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