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Class D Switching Power Amplifiers and Power D/A conversion

ICEPower 50asx2 kit
ICEPower 50asx2 kit
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Old 25th March 2019, 06:10 AM   #21
Ita0101 is offline Ita0101  Israel
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I cancel the order, I'm too noob for this project, I would be read as much as I can and eventuality build the hypex ncores when I will be ready.
Thanks!
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Old 25th March 2019, 04:14 PM   #22
Juhazi is offline Juhazi  Finland
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^That's a clearheaded decision, appreciated!
Hypex FA plate-amps with dsp are a gift from heaven for dummies like me!
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Old 25th March 2019, 11:32 PM   #23
Ita0101 is offline Ita0101  Israel
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Thanks. ;]
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Old 1st April 2019, 01:55 AM   #24
mikoy is offline mikoy  Canada
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Quote:
Originally Posted by gsrchrisu View Post
I bought 2 125asx2 modules from the first ebay link. They are the real deal. Installed in Ghentaudio cases with rtx modules, probably a bit overkill for a desk top system. In my opinion 125asx2 is a much better value than the 50asx2 at the moment. I tried a topping d50 and a Sabaj Da3 dac which worked fine without balanced inputs straight into the ice module.
The Emotiva PA-1 uses ICEpower 300ASC, pair would cost US$600 and free shipping to Canada.
140 watts RMS into 8 Ohms at 1 kHz at 1% THD;
135 watts RMS into 8 Ohms at 0.1% THD.

300 watts RMS into 4 Ohms at 1 kHz at 1% THD;
270 watts RMS into 4 Ohms at 0.1% THD. 

450 watts RMS into 2.7 Ohms at 1 kHz at 1% THD

How much total cost was it for 2 125asx2, Ghent case, and parts? Is the watts output comparable?
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Old 1st April 2019, 07:12 AM   #25
gsrchrisu is offline gsrchrisu  Canada
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That Emotiva PA-1 is a great option. So far the Ghentaudio option has probably cost me close to 400(taxes in) per mono block. So 800cdn plus tax for a ready made solution from Emotiva def sounds like a better option to go.

What is your plan for dealing with the balanced input only option of the Emotiva?
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Old 1st April 2019, 11:26 AM   #26
mikoy is offline mikoy  Canada
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Quote:
Originally Posted by gsrchrisu View Post
That Emotiva PA-1 is a great option. So far the Ghentaudio option has probably cost me close to 400(taxes in) per mono block. So 800cdn plus tax for a ready made solution from Emotiva def sounds like a better option to go.

What is your plan for dealing with the balanced input only option of the Emotiva?
From the PA-1 Manual, it does allow for unbalanced input, just need an RCA to XLR connector.

---Manual Page 11 ---
If your source device only offers an RCA unbalanced output, you can easily find low cost
adapters and adapter cables that go from an RCA connector to an XLR connector or a 1/4” phone
connector.
---

My mistake, shipping is $20 DHL, comes with 5 year warranty.

I was curious about the Ghent GA-M500P, from Ghents reply it has one 125ASX2(BTL) inside with a Mono input buffer. Costs US$675, compare that to your DIY $400.

Maybe one way to get the cost down (US$477) is to use one case for dual mono. I asked Ghent if I can get a DIY case similar to "GA-S500P Stereo Power Amplifier (Dual Mono)" amplifier.
1. Two 125ASX2(BTL) - US$277
2. Dual mono Case - US$120
3. RTX Module (pair) - US$80
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Old 1st April 2019, 12:02 PM   #27
e_fortier is offline e_fortier  Canada
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ICEPower 50asx2 kit
Good to know about Emotiva-1. For the input just use an adapter like shown below, they work great.

BR
Eric
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Old 1st April 2019, 06:29 PM   #28
gsrchrisu is offline gsrchrisu  Canada
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I probably dont understand it properly, but then why would one need a RTX module if you could just use an adapter like above. I assumed I needed a rtx module since I didnt have balance outputs from my preamp.
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Old 1st April 2019, 06:41 PM   #29
e_fortier is offline e_fortier  Canada
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ICEPower 50asx2 kit
The RTX is needed because it act as a buffer or a preamp since the input of these IcePower have a low input impedance and do need a buffer to sound their best.

The IcePower 300 series don’t need a buffer since their input impedance is the regular 47kohm.

BR
Eric
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Old 1st April 2019, 06:57 PM   #30
Pano is offline Pano  United States
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ICEPower 50asx2 kit
I loved my 125asx, until I dropped and broke it. Very clean, great bass control, easy to use. One friend criticized it as being "soft on top" - but I just found it to be clean and natural on top.
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