"The Wire AMP" Class A/AB Power Amplifier based on the LME49830 with Lateral Mosfets - Page 149 - diyAudio
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Old 1st June 2012, 10:50 PM   #1481
AP2 is offline AP2  Italy
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To IanAS:
IanAS... updated, forget the weight above the weight goes to technology ... this SMPS has been designed specifically for the amplifiers, the behavior was measured step by step on the response of the amplifier. in other areas, we have far exceeded the linear transformer, to the point of impossible to get performances with a transformer. I'm sorry, it's a difficult reality to accept, understand, but it is a truth and it is perfectly demonstrable.
assembly is clean, a DPS-600 weighs 430g,no emi/rfi or other noise.

Last edited by AP2; 1st June 2012 at 10:53 PM.
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Old 1st June 2012, 10:58 PM   #1482
IanAS is offline IanAS  England
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AP2, can you say please more about the remote control that Owen mentioned?

Last edited by IanAS; 1st June 2012 at 11:00 PM.
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Old 1st June 2012, 11:07 PM   #1483
AP2 is offline AP2  Italy
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Quote:
Originally Posted by IanAS View Post
AP2, can you say more about the remote control please?
Remote control is simple 2 pin switch (open/close) open = ON.
in off position, dps-600 switch in break state, in this condition voltage output (all) are 0V.
from Vac side,absorption is only 1mA AC (according to EU energy saved)
---
the output side, includes an optically isolated input (break fast when put to gnd) and an opto-isolated output, this pin goes to gnd after the startup phase. (this can be used for activate some things on amp)

Last edited by AP2; 1st June 2012 at 11:13 PM.
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Old 1st June 2012, 11:16 PM   #1484
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Red face oops!

Quote:
Originally Posted by AP2 View Post
Hi,
Update
BuildMeSomething 2x DPS-600-45/55V (Reg LME)
lolo 6+4 x DPS-600-45/55V (Reg LME)
Emphrygian 2x DPS-600-55/65V (Reg LME)
igor0203 2x DPS-600-55/65V (Reg LME)
QRikard 2x DPS-600-55/65V (Reg LME)
qusp 2x DPS-600-55/65V (Reg LME)
NicMac 2x DPS-600-55/65V (Reg LME)
Arthur 4x DPS-600-55/65V (Reg LME)
--------------------------------
availability 4xDPS-600-55/65V yes
45/55V- ended
---------------
payments: Lolo; QRikard; NicMac;Qusp;Paul(?) sorry, i need you nik name Paul
Sorry about that, with sending you a PM with my name etc. I forgot to do the opposite with the payment and include my pseudonym, my bad...

Paul.
__________________
Listening with Gusto!

Last edited by BuildMeSomething; 1st June 2012 at 11:21 PM.
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Old 1st June 2012, 11:19 PM   #1485
AP2 is offline AP2  Italy
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Update
BuildMeSomething 2x DPS-600-45/55V (Reg LME)
lolo 6+4 x DPS-600-45/55V (Reg LME)
Emphrygian 2x DPS-600-55/65V (Reg LME)
igor0203 2x DPS-600-55/65V (Reg LME)
QRikard 2x DPS-600-55/65V (Reg LME)
qusp 2x DPS-600-55/65V (Reg LME)
NicMac 2x DPS-600-55/65V (Reg LME)
Arthur 4x DPS-600-55/65V (Reg LME)
--------------------------------
availability 4xDPS-600-55/65V yes
45/55V- ended
---------------
payments: Lolo; QRikard; NicMac;Qusp;BuildMeSomething;
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Old 2nd June 2012, 12:24 AM   #1486
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Roberto,
I see you are closing the GB tomorrow. I would like to take advantage of the GB discount you have arranged for DPS-600 buyers, but like many other Wire builders, I live in North America and require the 110V option. I have been awaiting Owen's DPS-500 test results before committing. Does waiting for Owen's test results mean we will lose out on the discounted price for a Wire customized DPS-500? The full retail price of the DPS-500/S with "CustomizationForU" is more than I care to spend on this right now, even if it does produce the same outstanding test results as the DPS-600.

Either way, thanks a lot for your participation in this thread!
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Old 2nd June 2012, 02:06 AM   #1487
IanAS is offline IanAS  England
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AP2:
Has the DPS-600 start up time been reduced from the 16 seconds Owen measured?

AP2:
If I'm using 8 old style lateral MOSFETs then the bias will need to be double Owens suggested optimum, eg, 1.2 amps. A friend is using 400mA for 8 dies so that won't be a problem for the DPA-600. But will 1200mA?

AP2:
Owen got 67Volts / 84 Volts. You've stated 65 / 75. Which is it? Is there a choice? Could I have 75 / 85?

AP2:
http://www.diyaudio.com/forums/attac...ower-pulse.png Is that about 2.5 Volts of sag? So that would sag less if the voltage was a bit less than 67?? It's not sagging at all at the 10k graph. What would it be like at 100Hz? Post 1117: "(67V to consider that we are almost out of range limit of the controller) I sent this version has the optimum range at 62-63V". So I can't have 75 / 85 Volts then?

Owen:
Did you hear a difference between the lower and higher bias settings; 300mA and 600mA?

Owen:
Am I correct that your measurements at post 1115 were done with the DPS-600 NOT regulated for the LME?? Would regulators delete that 120Hz spike?

DSP-400
http://www.diyaudio.com/forums/attac...-8r-dps400.png
DSP-600
http://www.diyaudio.com/forums/attac...ured-level.png I can't make the image large. It's in post 1115.
The 400 is better? Why is that?

Owen:
In the final sum up you seem to be not quite satisfied with the supply, saying you are still looking for the best supply. Is that just about the non 110V or is there more? You said the noise is not as good as you'd like?


Sorry for all these questions. A month ago this website appears to have stopped emailing me that new posts were happening so I had to catch up quite a yesterday and today.

Last edited by IanAS; 2nd June 2012 at 02:25 AM.
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Old 2nd June 2012, 05:21 AM   #1488
sikkis is offline sikkis  Finland
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Hi AP2,

In post #1421 you mention that new batch will start on June 1st and take 45 days, will this new batch produce more DPS-600-45/55V (Reg LME) ? I'm asking this because they're mentioned to not be available anymore..

I'd be interested in 2x DPS-600-45/55V (Reg LME) if they will be produced on new batch. thanks!
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Old 2nd June 2012, 07:02 AM   #1489
lolo is offline lolo  France
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Ian,

I don't quite understand your comments, Owen said about the DPS-600 that it's as good as it can get.. He did though have some reservations about the DPS-400, yes.
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Old 2nd June 2012, 09:59 AM   #1490
AP2 is offline AP2  Italy
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Quote:
Originally Posted by IanAS View Post
AP2:
Has the DPS-600 start up time been reduced from the 16 seconds Owen measured?
yes, now startup end in 3-4 sec (@400mA)

AP2:
If I'm using 8 old style lateral MOSFETs then the bias will need to be double Owens suggested optimum, eg, 1.2 amps. A friend is using 400mA for 8 dies so that won't be a problem for the DPA-600. But will 1200mA?

1,2A of bias is not possible with this smps.
I suggest you stay around 400mA, (it is my personal belief, with respect, you can not hear a difference). is more important to solve other parameters, (that ear immediately instead of 0,001% thd) such as a decrease in the voltage transients (this is catastrophic for the linearity and changes the timbre of the instruments). or, the harmonic component present on the output voltage during loading. and finally, AC line stabilization, the DPS-600 is incredible in this, 195 to 255Vac output produces only a few mV, even with noise signals fast.
AP2:

Owen got 67Volts / 84 Volts. You've stated 65 / 75. Which is it? Is there a choice? Could I have 75 / 85?
65/75V includes LME regulated. opc have a sample (just for try) without lme regulator.you have to consider the output load, then 65V is already very high for this compact smps. then i fixed at 65V max voltage output.

AP2:
http://www.diyaudio.com/forums/attac...ower-pulse.png Is that about 2.5 Volts of sag? So that would sag less if the voltage was a bit less than 67?? It's not sagging at all at the 10k graph. What would it be like at 100Hz? Post 1117: "(67V to consider that we are almost out of range limit of the controller) I sent this version has the optimum range at 62-63V". So I can't have 75 / 85 Volts then?
I measured on DPS-600 (65V) up to 5-6 volt drop at 120Hz not reactive load. (1KVA trafo 2x100.000uF,i measured up to 12-15V drop voltage.
-----------------------
The DPS-400 has been in production since 2005, I know absolutely no problems in PA use.
Only problem now emerged, is due to my mistake in trying to resolve the current startup (when you disconnect the ac cable). now fully resolved, it behaves exactly the same as the off via remote control.
this is stable even at 2x10.000uF output, I think it can be an elegant solution for the sub, considering the compact size and high reliability demonstrated over time, apart ultra low noise emission.
-----
The DPS-500/S have a limit of 78V but you have consider drop voltage very small, i think that you need this smps for your amplifier.








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