Class D Amp Photo Gallery - Page 3

SSassen · 10th October 2006, 11:08 AM

Thanks,

That's just how I build all my gear, friends call it the Sander-Super-Nett-Verarbeitung, and that's coming from a bunch of German friends that have perfection written all over their builds already.

Best regards,

Sander Sassen
http://www.hardwareanalysis.com

TOINO · 10th October 2006, 11:20 AM

...O.C.C 1KW...

BWRX · 10th October 2006, 12:36 PM

Quote:

Originally posted by TOINO
...O.C.C 1KW...

Care to share any more info about this module?

drzhuang · 10th October 2006, 01:36 PM

Quote:

Originally posted by BWRX

It sure looks nice, but how did it sound? What kind of class d amp is it?

It sound good.

Modulator: classical PWM
Feedback: before LC filter
Power stage: N channel mosfets H bridge

Another kit of mono 500W@8¦¸

Javin5 · 10th October 2006, 01:42 PM

Hallo Sander

This is an outstandig implementation, perfect workmanship, clean design, very professional! Congratulations! As a beginner, with yet limited experience, may I ask two questions?

(1) You are using unbalanced inputs, rather than XLR. Did you compare the two and found no difference in performance? You just tied the unused input to ground?

(2) I see that you are using a power line filter. If I recall correctly, Bruno once recommended against it, because the Y-caps could cause ground contamination with power line noise. However, it all may depend on how grounding is implemented. Maybe you could shortly comment on this?

I'm in the process of finishing two UcD180AD monoblocks, a picture will follow shortly.

Kurt

SSassen · 10th October 2006, 01:58 PM

Kurt,

Quote:

(1) You are using unbalanced inputs, rather than XLR. Did you compare the two and found no difference in performance? You just tied the unused input to ground?

At that time I had more use for it as a single-ended amplifier, my current setup uses two Hypex UcD400s that do have a balanced input however. IMHO balanced inputs are superior to single ended, provided you carry this through throughout your system, only having one component with balanced in/outputs is rather pointless.

Quote:

(2) I see that you are using a power line filter. If I recall correctly, Bruno once recommended against it, because the Y-caps could cause ground contamination with power line noise. However, it all may depend on how grounding is implemented. Maybe you could shortly comment on this?

Well, that's correct, however I'm using a medical grade line filter which does NOT have Y-caps, so I do not have that problem.

Best regards,

Sander Sassen
http://www.hardwareanalysis.com

ssanmor · 10th October 2006, 02:02 PM

Some photos of a recently developed 6x400W amplifier, based on 6 coldamp BP4078 modules and 3 SPS80.

Height is only 44mm.

(don't know if I posted it before in other thread, sorry if so).

ssanmor · 10th October 2006, 02:04 PM

and now the internals...

fredos · 10th October 2006, 02:09 PM

The old D-amp 8000HVI.....

Fredos

www.d-amp.com

SSassen · 10th October 2006, 02:10 PM

Quote:

Some photos of a recently developed 6x400W amplifier, based on 6 coldamp BP4078 modules and 3 SPS80.

That's a tight fit! isn't that little fan irritatingly loud?

Best regards,

Sander Sassen
http://www.hardwareanalysis.com

10th October 2006, 11:08 AM	#21
SSassen diyAudio Member Join Date: Mar 2005 Location: Purmerend	Thanks, That's just how I build all my gear, friends call it the Sander-Super-Nett-Verarbeitung, and that's coming from a bunch of German friends that have perfection written all over their builds already. Best regards, Sander Sassen http://www.hardwareanalysis.com __________________ Acception without proper examination equals religion Condemnation without proper examination equals prejudice

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10th October 2006, 01:42 PM	#25
Javin5 diyAudio Member Join Date: Mar 2006 Location: Switzerland	Hallo Sander This is an outstandig implementation, perfect workmanship, clean design, very professional! Congratulations! As a beginner, with yet limited experience, may I ask two questions? (1) You are using unbalanced inputs, rather than XLR. Did you compare the two and found no difference in performance? You just tied the unused input to ground? (2) I see that you are using a power line filter. If I recall correctly, Bruno once recommended against it, because the Y-caps could cause ground contamination with power line noise. However, it all may depend on how grounding is implemented. Maybe you could shortly comment on this? I'm in the process of finishing two UcD180AD monoblocks, a picture will follow shortly. Kurt

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