I won't say much before I get more modules as my system is actively amped and listening to a single mid or tweeter by itself isn't very useful, but - I took my AEspeakers TD18H (sealed cab) out to my rural backyard to give the MDA a proper test on sub.
It played very loud, very clean and stayed cool. I don't think I got near its limits but it was shaking the foil ceiling of my verandah.
Woohoo! 😀
It played very loud, very clean and stayed cool. I don't think I got near its limits but it was shaking the foil ceiling of my verandah.
Woohoo! 😀
TCx,
Question about the G300 case. They list Package Size:
30cm x 20cm x 10cm (11.81in x 7.87in x 3.94in)
Is this correct? I didn't know if it was for the case or the box it is shipped in. Also, what is "populated" on the board? RCA's and speaker terminals, lighted switch and knob, but does it include the ALPS pot?
Thanks
Question about the G300 case. They list Package Size:
30cm x 20cm x 10cm (11.81in x 7.87in x 3.94in)
Is this correct? I didn't know if it was for the case or the box it is shipped in. Also, what is "populated" on the board? RCA's and speaker terminals, lighted switch and knob, but does it include the ALPS pot?
Thanks
My experience (newest first):
MiniAMP I2S input: 4x10 watt 8 ohm based on texas instruments. Low power, but enough for resonable efficient speakers, and for listeners who don't demand loud SPL's. The sound is really good, and typical for at 100% digital signalpath is the high resolution. I also listen to heavy metal, that can be complex and hard to hear the words. This is much easier with MiniAMP and I2S input (Similar to Tact/Lyngdorff). Just don't push the little amps, then they go harsh.
Connex NXP TDA8950th modules - analog input. I have had some problems with these modules, but they sound absolut great. Enough power to meet most situations i stereo mode, if this is not enough very high power i BTL mode. Low freq is stunning and mids and high above average. Low end is both full bodied and punchy - the best class D low end I have heard. A real bang for the buck amp.
Panasonic SA-XR50 analog and spdif input (texas instruments chip): Used with spdif input, this is an amazing amp with same qualities as MiniAMP. Again, don't cranck the volume, because it will sound harsh Analog input is below average, and low freq lacks punch compared to any other amp I have had. Even the MiniAMP is better in low freq when compared to SA-XR50 on analog input.
CAD audio D400S - analog input: Powefull and really good sonics. The sound is very fast and a bit special. It has its own way of playing but I liked it. It's not cold nor warm, byt kind of dry/thin sound to it (hard to describe). It never lacked power and did a good job, for the short time I had it.
MiniAMP I2S input: 4x10 watt 8 ohm based on texas instruments. Low power, but enough for resonable efficient speakers, and for listeners who don't demand loud SPL's. The sound is really good, and typical for at 100% digital signalpath is the high resolution. I also listen to heavy metal, that can be complex and hard to hear the words. This is much easier with MiniAMP and I2S input (Similar to Tact/Lyngdorff). Just don't push the little amps, then they go harsh.
Connex NXP TDA8950th modules - analog input. I have had some problems with these modules, but they sound absolut great. Enough power to meet most situations i stereo mode, if this is not enough very high power i BTL mode. Low freq is stunning and mids and high above average. Low end is both full bodied and punchy - the best class D low end I have heard. A real bang for the buck amp.
Panasonic SA-XR50 analog and spdif input (texas instruments chip): Used with spdif input, this is an amazing amp with same qualities as MiniAMP. Again, don't cranck the volume, because it will sound harsh Analog input is below average, and low freq lacks punch compared to any other amp I have had. Even the MiniAMP is better in low freq when compared to SA-XR50 on analog input.
CAD audio D400S - analog input: Powefull and really good sonics. The sound is very fast and a bit special. It has its own way of playing but I liked it. It's not cold nor warm, byt kind of dry/thin sound to it (hard to describe). It never lacked power and did a good job, for the short time I had it.
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Hi,
outer dimensions of the G300 case are:
19cm (w) x 6,4cm (h) x 30cm (d) - height is excl. "legs".
Inner dimensions (cca):
17,2cm (w) x 5 cm x 29 cm
No, there is no pot included. You can buy the Alps blue separately for 12 USD. All other parts I mentioned, i.e. RCA and speaker terminals, mains socket including fuse, lighted switch and volume knob are included and installed in the case. Actually, the volume knob is not installed as there is nothing it could be mounted to. 🙂
Thanks for sharing your experience guys.
It'd be interesting to hear more about the performance of the Audiopower.it amps. They certainly look good on paper.
It'd be interesting to hear more about the performance of the Audiopower.it amps. They certainly look good on paper.
Hi,
I think you're referring to the model DPA-600 (DPA-2030 is the evolution of the SDA-400).
the difference in structure is focused on the modulator (pre driver stage to the audio output are identical), including dynamic DT and all the guards.
The preamplifier module is identical. (See all of this on PIC).
So is self oscillating DXA, DPA-600 has an ultra linear modulator to 400kHz triangular wave.
all audio measurements are very good. DPA-600 has the characteristic flat THD up to full power (the same as a class AB).
measures there is a difference in the response to the load. DXA change 1dB at 40kHz from 4R to open. DPA-600 3dB at 40kHz change from 4R to open.
On a pair of speakers B & W 800 series, the sound is different, but nobody could figure out which is better.🙂
Regards
Roberto P.
Hi all,
To TCX:
I have great curiosity to know your response for amplifiers that you purchased, your sense of hearing because I think you wanted to sound very good and not much power.
I think that may also affect the others on this forum.
best regards
Robert P.
To TCX:
I have great curiosity to know your response for amplifiers that you purchased, your sense of hearing because I think you wanted to sound very good and not much power.
I think that may also affect the others on this forum.
best regards
Robert P.
Hi AP2,
actually, I still have only one amp finished. It is the T2 from Hifimediy with 200W/30V SMPS from Sinewave Audio XINLI LAI's store Small Orders Online Store. (The SMPS is not listed in the store but I asked them about it by email and ordered it for 25 USD.) I have also the alluminum case (of their G300 amp) from the same webstore. I had to connect GND of the SMPS' output to the Earth otherwise I got a lot of hum. But otherwise I like the amp very much, especially considering that I got it completely for only slightly over 100 USD.
I want to finish other two amps ASAP. One is based on the ZapPulse 800XE amp module from LC Audio and SMPS500R from Connexelectronic. And the other is a discrete class A/B DIY amp from a kit with SMPS250QR from Connexelectronic. Both these amp are much more expensive than T2 and should be very good. But I still wait for speaker terminals and some other parts I have ordered.
I will share my impressions as soon as I get the amps playing.
I also want to try DPA-2030 or two DPA-200 but I decided to finish the two amps mentioned above first, otherwise I would have too many unfinished amps at home. 🙂
Has anybody else experience with any of these amps?
actually, I still have only one amp finished. It is the T2 from Hifimediy with 200W/30V SMPS from Sinewave Audio XINLI LAI's store Small Orders Online Store. (The SMPS is not listed in the store but I asked them about it by email and ordered it for 25 USD.) I have also the alluminum case (of their G300 amp) from the same webstore. I had to connect GND of the SMPS' output to the Earth otherwise I got a lot of hum. But otherwise I like the amp very much, especially considering that I got it completely for only slightly over 100 USD.
I want to finish other two amps ASAP. One is based on the ZapPulse 800XE amp module from LC Audio and SMPS500R from Connexelectronic. And the other is a discrete class A/B DIY amp from a kit with SMPS250QR from Connexelectronic. Both these amp are much more expensive than T2 and should be very good. But I still wait for speaker terminals and some other parts I have ordered.
I will share my impressions as soon as I get the amps playing.
I also want to try DPA-2030 or two DPA-200 but I decided to finish the two amps mentioned above first, otherwise I would have too many unfinished amps at home. 🙂
Has anybody else experience with any of these amps?
Hi AP2,
DXA-400 costs €138.00 and SDA-400 costs €129.00; the difference only €9
SNR 110dB............SNR 104dB
THD 0,002%@30W....THD 0,03%@30W
So, big difference for €9
DPA-600 THD 0,008%@20W..............THD 0,08%@400W
So, 10 times difference; is this flat THD?
Do you know anything about the availability of DXA-400?
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Hi Darkfury,
Your observation is correct (price and on thd DPA).
Prices:
The DXA-400 was put in a special promotion, just in time that SDA-400 had sales (-33%) so there was great difference in price.
Unfortunately it was blocked the sale to the public of the DXA-xx.series.
As already responded to other customers via email, it will soon be available DXA-xx series, AudioPower maintain at least 30 days for the promotion (-33%). (I think it is right to give the opportunity for those who want to buy it). At the new shop, in line with AudioPower style.
THD:
I take this opportunity to tell you that the THD, both the DPA to DXA-series is wrong.
Correct:
DXA-400 (4R) 0.05% @ 475W (1 Khz) at + /-66v at idle (*) DPS-500
DPA-600 (4R) 0.06% @ 570W (1 Khz)
(*) Just a word on this:
sorry for simple calculations.
DPS-500, decreases while the amp delivers 475W, 2V, then rail is 64V.
Are about 62V 475W on load (sinusoidal), this corresponds to about 96% modulation, I think it's important to see this to understand the THD of 0.05% on a selfoscillator on 4R.
DXA and DPS-500, create a new table of voltage / power, compared to the conventional power supply. I understand that you can get confused about this.
Best Regards
Roberto
Your observation is correct (price and on thd DPA).
Prices:
The DXA-400 was put in a special promotion, just in time that SDA-400 had sales (-33%) so there was great difference in price.
Unfortunately it was blocked the sale to the public of the DXA-xx.series.
As already responded to other customers via email, it will soon be available DXA-xx series, AudioPower maintain at least 30 days for the promotion (-33%). (I think it is right to give the opportunity for those who want to buy it). At the new shop, in line with AudioPower style.
THD:
I take this opportunity to tell you that the THD, both the DPA to DXA-series is wrong.
Correct:
DXA-400 (4R) 0.05% @ 475W (1 Khz) at + /-66v at idle (*) DPS-500
DPA-600 (4R) 0.06% @ 570W (1 Khz)
(*) Just a word on this:
sorry for simple calculations.
DPS-500, decreases while the amp delivers 475W, 2V, then rail is 64V.
Are about 62V 475W on load (sinusoidal), this corresponds to about 96% modulation, I think it's important to see this to understand the THD of 0.05% on a selfoscillator on 4R.
DXA and DPS-500, create a new table of voltage / power, compared to the conventional power supply. I understand that you can get confused about this.
Best Regards
Roberto
Darkfury: Don't forget that DPA series amps have a SMPS onboard while DXA series amps need a separate SMPS. Then the price difference is quite different. 🙂
Oh, sorry for my mistake.
I pointed out the difference between the product lines because I didn't realize the difference of (not) included SMPS myself originally. Before the price-drop of the DXA line the DPA line seemed to be much better bang for buck. Especially the DPA-200 which seems to be a combination of DXA amp and SMPS on one board (according to specs).
I pointed out the difference between the product lines because I didn't realize the difference of (not) included SMPS myself originally. Before the price-drop of the DXA line the DPA line seemed to be much better bang for buck. Especially the DPA-200 which seems to be a combination of DXA amp and SMPS on one board (according to specs).
Yes, I really like this project, very compact with all on board.
immediate use in active high-end systems. without the usual problems of separate psu. I think it is also awaited by Audiophiles.
the delay is directly related to DXA, (same technology), scaled with DPS-500 Power Unit.
I think that may be available by February 10 along with other new products.
Regards
Robert P
immediate use in active high-end systems. without the usual problems of separate psu. I think it is also awaited by Audiophiles.
the delay is directly related to DXA, (same technology), scaled with DPS-500 Power Unit.
I think that may be available by February 10 along with other new products.
Regards
Robert P
Hi
Thanks for your interest.
First of all, the presentation was postponed to March 30 (last date).
Mono-block: This is the first of three new products that follow.
Mono 600w (4R), is capable of driving loads of 2R with undistorted power of 1kw.
Balanced / unbalaned input.con AC-DC input switch.
consists of a modified version of the DXA-600 and DPS-500 / S.
MXD-602 stereo: two DXA-600 and two separate DPS-500/S.
MXD-404: composed of 4 DXA-400 and two DPS-500 / S.
To complete the innovation of these products, AudioPower has entrusted the design of the case to a team of engineers. For the first time the materials will be used very special and an exclusive design with high-quality style.
I believe that AudioPower wants to prove with these three products, their level of technology.
Measure of case is the first innovation.
Mono W204, H60, D276.
Stereo W264, H60, D300. (Optional 24-bit USB input)
MXD-404:As stereo.
Needless to say .. every detail has been taken care of until the atom.🙂
Best regards
Roberto P.
Thanks for the description. Is the MXD-600 a bridged amp, or was it build as a mono from the start?
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