SounDigital SD 600.1D Nano Car Amplifier

[Xyrium]

The "super tweeter" claim is especially funny given the high-frequency rolloff. (Do people actually run supertweeters in car audio!?)

They did until the car audio community realized they couldn't access Twitter 10x faster through them

 

[Matias]

This is a Brazilian company. I expected a lot better from SounDigital...

@amirm could you please test this at 50 Hz, where it is intended to work, powering a subwoofer?

 

[KxDx]

I have an Alpine PDX F4 that I haven't used in forever. I should box it up and send it in...

 

[Matias]

I have an Alpine PDX F4 that I haven't used in forever. I should box it up and send it in...

Please do! I use an Alpine PDX-V9 every day, they should be similar. I am curious how it measures.

V9 specs are promising:

• THD+N (10W into 4 Ohms) for CH-1/2/3/4: <0.005 %
• THD+N (10W into 4 Ohms) for Subwoofer: <0.006 %
• THD+N (Rated Power into 4 Ohms) for CH-1/2/3/4: <0.03 %
• THD+N (Rated Power into 4 Ohms) for Subwoofer: <0.05 %
• Damping Factor for CH-1/2/3/4: >500 into 4 ohms at 100Hz
• Damping Factor for Subwoofer: >1000 into 4 ohms at 100Hz
• Signal to Noise (Rated Power into 4 Ohms) for CH-1/2/3/4: 112 dB
• Signal to Noise (Rated Power into 4 Ohms) for Subwoofer: 119 dB
• Weight: 2.7 kg

 

[SplitTime]

http://www.milbert.com/bam235ab
Be nice if someone could send one of these to Amir.

There were so many good bits on the milbert web site - but I really appreciated this one...

<quote>
What's the rating?
30 Watts per channel, 20 Hz -- 20 kHz, -3 dB, 3% THD Some owners have reported that the BaM-235ab's "30 tube Watts sound much more powerful" than comparably-powered amps. This is often attributed to the soft-clipping nature inherent in its design. Unlike transistorized amps which smack and crackle with abrupt distortion, the BaM-235ab exhibits graceful, smooth overdrive into clipping.
<end quote>

Spec’d at 3% THD - just think how bad it might actually measure? Seems unlikely that noise would be high enough to even be much of a factor... or maybe it is that bad...

 

[Xyrium]

There were so many good bits on the milbert web site - but I really appreciated this one...

<quote>
What's the rating?
30 Watts per channel, 20 Hz -- 20 kHz, -3 dB, 3% THD Some owners have reported that the BaM-235ab's "30 tube Watts sound much more powerful" than comparably-powered amps. This is often attributed to the soft-clipping nature inherent in its design. Unlike transistorized amps which smack and crackle with abrupt distortion, the BaM-235ab exhibits graceful, smooth overdrive into clipping.
<end quote>

Spec’d at 3% THD - just think how bad it might actually measure? Seems unlikely that noise would be high enough to even be much of a factor... or maybe it is that bad...

It's that old tube amp tech, working on the pleasing even order harmonics. It can certainly sound euphoric I suppose, but I'd rather hear my music as it was intended, and just let my listening room screw up the rest.

There are actually a few solid state companies out there, literally injecting even order harmonics into their amp design. I believe NuPrime was one of them.

 

[lszomb]

I appreciate Amirm's work. However, this is not eye opening as it was expected. I would say we should look at something else that has better hope to deliver good results. Our life is kind too short to waste on such crap.

 

[Xyrium]

This is a Brazilian company. I expected a lot better from SounDigital...

@amirm could you please test this at 50 Hz, where it is intended to work, powering a subwoofer?

I had to do a retake on this. I thought you wanted him to test this using AC power at 50Hz, such as the UK. Perhaps that would indeed improve performance after it catches fire.

 

[JohnBooty]

I appreciate Amirm's work. However, this is not eye opening as it was expected. I would say we should look at something else that has better hope to deliver good results. Our life is kind too short to waste on such crap.

Well, we might strike gold someday...

 

[lszomb]

Well, we might strike gold someday...

I was waiting for that for more than 40 years. Eventually, I accept the fact that money is smarter than me (in most cases except for snake oil)

 

[LTig]

Wow, 7000W PMPO! Is this the power it creates once in its life time when it goes up in fire?

 

[pavuol]

Soundigital’s Competition Division, named TEAM SOUNDIGITAL is the current holder of several important scores and records. The highest scores ever achieved in SPL (Sound Pressure Level), Pancadão and Trio belong to competitors of the team.

 

[tomtoo]

From the Company:
"..The customers’ satisfaction comes in first place, being constructed by relations based in Ethics, Transparency and Trust..."

Mhhhh? What's there THD? Something must be wrong.

 

[mvil]

Actually this guy tests them well

https://www.youtube.com/channel/UCGW-qPM8-xJE4-uSLA5BAGQ

and for a funny crossover

 

[KxDx]

Please do! I use an Alpine PDX-V9 every day, they should be similar. I am curious how it measures.

V9 specs are promising:

• THD+N (10W into 4 Ohms) for CH-1/2/3/4: <0.005 %
• THD+N (10W into 4 Ohms) for Subwoofer: <0.006 %
• THD+N (Rated Power into 4 Ohms) for CH-1/2/3/4: <0.03 %
• THD+N (Rated Power into 4 Ohms) for Subwoofer: <0.05 %
• Damping Factor for CH-1/2/3/4: >500 into 4 ohms at 100Hz
• Damping Factor for Subwoofer: >1000 into 4 ohms at 100Hz
• Signal to Noise (Rated Power into 4 Ohms) for CH-1/2/3/4: 112 dB
• Signal to Noise (Rated Power into 4 Ohms) for Subwoofer: 119 dB
• Weight: 2.7 kg

I've got it stacked with a PDX M6 in my trunk, which I do still use for sub duty (I just don't listen as loud in me car as I used to so the F4 hasnt been used in 3 or 4 years). When I get some time I will have to pull and separate them.

 

[Matias]

I've got it stacked with a PDX M6 in my trunk, which I do still use for sub duty (I just don't listen as loud in me car as I used to so the F4 hasnt been used in 3 or 4 years). When I get some time I will have to pull and separate them.

Here are specs from the Alpine PDX-F4, now discontinued, but should be the same for the 4 channels for the full range speakers of the PDX-V9, which is still current.

PDX-F4 4/3/2 Channel Power Amplifier

• CEA-2006 amplifier ratings: 100W RMS x 4 [4/2 ohm @ 14.4V ≤ 0.05% THD+N]
• S/N ratio; 95 dB (ref: 1W into 4 ohm)

This THD+N at 5W about 0.003% SINAD 90 should put it in the green area of the best amplifiers.


PDX-F6 shown below.

 

[JohnBooty]

I was waiting for that for more than 40 years. Eventually, I accept the fact that money is smarter than me (in most cases except for snake oil)

Amir just reviewed another cheap car amp with suspiciously high power ratings at a suspiciously low price, and... it's not junk. It's not gold, but it's not junk.

https://www.audiosciencereview.com/...m-d1004-4-channel-car-amplifier-review.11528/

 

[Matias]

Wow, 7000W PMPO! Is this the power it creates once in its life time when it goes up in fire?

That was entry level. Their discontinued model had specified 35 kW RMS!
https://soundigitalusa.com/products/35000-1d-power/

TECHNICAL SPECIFICATIONS
Power @ 14.4V @ 1Ω: 1 x 35000 W RMS
Power @ 14.4V @ 2Ω: 1 x 19250 W RMS
Power @ 14.4V @ 4Ω: 1 x 10587 W RMS
THD + N (10% Rated Power): 0.3%
Frequency Response (+/- 3dB): 20 Hz – 18 kHz
Damping Factor: > 100
Max Current Draw: 2971 A

 

[Matias]

I was waiting for that for more than 40 years. Eventually, I accept the fact that money is smarter than me (in most cases except for snake oil)

Have you seen this post above?
https://www.audiosciencereview.com/...d-600-1d-nano-car-amplifier.11521/post-330869

 

[chriss.chneider]

Please go on with the car audio amplifiers!!!
Thanks Amir!