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Old 11th October 2012, 01:54 PM   #41
AP2 is offline AP2  Italy
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Quote:
Originally Posted by qusp View Post
sent you PM and email mate, i'm having troubles with my internet service provider, dont think my email got through, but see PM, or perhaps if you send me an email I will be able to reply without being refused. new amp is looking good mate, the DXA has always looked interesting, you got around the issue preventing sale by changing design a bit?
Hi, i'm back on line just from 2 hours,(3 days of black-out ,same AP) maybe not send email for my troubles..ahah!
For DXA,i have changed modulator (job already done on the series DPA-xx),just for a choice without smps on board.
-------------------
you changed your icon.... now yes!, uh .. where did you hide the claws?

regards

Last edited by AP2; 11th October 2012 at 02:02 PM.
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Old 14th October 2012, 03:04 AM   #42
HiroPro is offline HiroPro  Canada
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Originally Posted by raintalk View Post
And a US compatible voltage version!
YES!!!
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Old 14th October 2012, 03:21 AM   #43
HiroPro is offline HiroPro  Canada
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Originally Posted by AP2 View Post
For this, we have resolved in some other way.
Sorry for OT:
We are awaiting the arrival of a new module (without smps on board). so we can offer this new + DPS-500 (goes very well at 110Vac) or you can power with transformer (if you think it's better).
As new DPA-series, this module is an exact copy of our DXA-600. only changes the modulator (in part). if you look carefully the section "Amp" of DPA-400/600 with DXA, see exactly the same, including chip and layers.
I show that this is the new DXA (not self Oscillating), as a section of the DPA-xx. qty printed and full test are ready, it should be available in 30 days...hope!

P.S. version present on site, is not this new version.

Regards
Any ETA on these modules less SMPS section and will there be bundle pricing with DPS-500 ?
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Old 14th October 2012, 02:47 PM   #44
AP2 is offline AP2  Italy
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Originally Posted by HiroPro View Post
Any ETA on these modules less SMPS section and will there be bundle pricing with DPS-500 ?
long absent hehe!
sorry, i think this is OT.
the characteristics are identical to F3. I think the cost Boundle, a few tens of dollars more, in comparison to 'F3, already in incredible low price, considering that it is not a PA amplifier.
F3 or dxa, we are ready to make any comparison with mono-block class AB, with 1KVA toroidal in side.
Today, in this chaotic market, there are no words to describe really a product. even a simple class D chip, it says "amazzing, nice, transparency, etc. .." but when I listen to them in testing (with low impedance high fidelity speaker), just turn up the volume on female vocals, with bass, throw it out the window. it seems that there vocals as digitized flute!...intermodulated by bass.

One new...F1 Tower (2xF1 vertical frame) just near our big speaker

Regards
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Old 14th October 2012, 07:40 PM   #45
atoluma is offline atoluma  France
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Hi roberto.

On this topic, you wrote that DPA-400-F3 is 30mm high but on the mechanical sheet I read 40mm???
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Old 14th October 2012, 10:49 PM   #46
HiroPro is offline HiroPro  Canada
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Originally Posted by AP2 View Post
long absent hehe!
sorry, i think this is OT.
the characteristics are identical to F3. I think the cost Boundle, a few tens of dollars more, in comparison to 'F3, already in incredible low price, considering that it is not a PA amplifier.
F3 or dxa, we are ready to make any comparison with mono-block class AB, with 1KVA toroidal in side.
Today, in this chaotic market, there are no words to describe really a product. even a simple class D chip, it says "amazzing, nice, transparency, etc. .." but when I listen to them in testing (with low impedance high fidelity speaker), just turn up the volume on female vocals, with bass, throw it out the window. it seems that there vocals as digitized flute!...intermodulated by bass.

One new...F1 Tower (2xF1 vertical frame) just near our big speaker

Regards
Hi Roberto!

Interesting research MDI team and you are doing. Thanks for sharing.

As for DPA-400/F-3 less SMPS section. What is the nomenclature of it IE what is it called?

Curious of pricing as the DPS-500s are about 200 Euro each and F-3 is 290 Euros so you're saying this module will be under a 100 Euros?

Basically we are talking 150-200 Euro a channel right?

So that's about $250-300 USD a channel. Not bad.

Sure would be great to have a single PCB module for NA 120V like the F-3 as this is going to add a lot more cost than just 10-20 Roberto. It's also nice to have the frame etc and those binding posts look nice on F-3.

Do we have anybody review F-3 yet? Sure would be great to hear second hand opinions of it's performance and sonic signature.
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Old 14th October 2012, 10:54 PM   #47
HiroPro is offline HiroPro  Canada
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Quote:
Originally Posted by AP2 View Post
long absent hehe!
sorry, i think this is OT.
the characteristics are identical to F3. I think the cost Boundle, a few tens of dollars more, in comparison to 'F3, already in incredible low price, considering that it is not a PA amplifier.
F3 or dxa, we are ready to make any comparison with mono-block class AB, with 1KVA toroidal in side.
Today, in this chaotic market, there are no words to describe really a product. even a simple class D chip, it says "amazzing, nice, transparency, etc. .." but when I listen to them in testing (with low impedance high fidelity speaker), just turn up the volume on female vocals, with bass, throw it out the window. it seems that there vocals as digitized flute!...intermodulated by bass.

One new...F1 Tower (2xF1 vertical frame) just near our big speaker

Regards
So you guys work with an Italian PA equipment/design house? Can you share photos of these rigs?


Can you share the types and driver counts etc on loudspeakers driven with these digital amps?

Considering the cost per channel curious of active DSP xover systems you guys might be using in proaudio segment.

Thanks for sharing your work here Roberto.

Best regards.
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Old 15th October 2012, 08:03 AM   #48
AP2 is offline AP2  Italy
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Originally Posted by atoluma View Post
Hi roberto.

On this topic, you wrote that DPA-400-F3 is 30mm high but on the mechanical sheet I read 40mm???
Hi, yes I wrote (ref to pcb), mean that height of complete pcb is 31,6mm.
F3 is complete of alluminum frame and heatsink, then consider 5mm spacers (include mylar isolation at bottom) and 2mm thick aluminum, we have total 40mm (if necessary, the dpa-400 can be mounted in 37mm height, including the spacers 5mm.).
DPA-400/F3-F2, fits perfectly in 1U.

Regards
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Old 17th October 2012, 08:06 AM   #49
atoluma is offline atoluma  France
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Thank's. Do you have the datasheet ready?
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Old 17th October 2012, 09:39 AM   #50
AP2 is offline AP2  Italy
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Originally Posted by atoluma View Post
Thank's. Do you have the datasheet ready?
Hi,
I apologize and take this opportunity to put this information on connecting to the connector 10Pin, maybe it can help you prepare for your connections. to complete the datasheet, I need this weekend.
some pasienza, I did not expect this huge demand, the next batch is already engaged. while waiting for the public review of F1.
------------------------------------------------
the DPA-400/Fx allows you to use the 10Pin connector with flat cable up to 40cm in length, inside the case, with absolutely no noise.
this is ensured, not only by the shielding provided by the frame, but by a careful development of the signals in use, especially in the section. power supply.
I recommend not to remove the frame, the amplifier has passed the test of RFI / EMI, with the lowest emissions obtainable.

Regards
Attached Images
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Last edited by AP2; 17th October 2012 at 09:57 AM.
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