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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 1st April 2019, 07:01 PM   #31
e_fortier is offline e_fortier  Canada
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ICEPower 50asx2 kit
The soft on top is probably because you have no buffer for your inputs.
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Old 1st April 2019, 07:02 PM   #32
Pano is offline Pano  United States
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ICEPower 50asx2 kit
Could be. Sure didn't measure that way.
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Old 2nd April 2019, 06:39 AM   #33
mikoy is offline mikoy  Canada
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Got an updated quote from Ghent. Total cost will be $587 to build the exact GA-S500P, vs buying a fully built one for $1350.

Will cost the same as an Emotiva PA-1, advantage is more output power.
500w x 2(4Ω), or 250w x 2(8Ω) - Two 125ASX2(BTL)
300w x 2(4Ω), or 140w x 2(8Ω) - Emotiva PA-1

Cost breakdown
1. GA-S500P Stereo Power Amplifier (Dual Mono) DIT kit US$310
-200mm x 315mm amp case with dual-mono rear-plate
-all needed audio connectors
-RTX-B(0db, 100K) module
-Custom Power supply/signal Harness for two 125ASX2
2. Two 125ASX2(BTL) - US$277

If only the 300ASC board was available for purchase. What do you guys think?
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Old 2nd April 2019, 12:27 PM   #34
ceausuc is offline ceausuc  Romania
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If you are looking for ICEpower amps how about this XTZ:
XTZ EDGE A2-300 power amp - XTZ Sound in Balance
I'm not an expert but it looks well built, I think there is also some sort of buffer on the RCA inputs. Has good reviews and fair price.

On the other hand, Allo Audio is working on a TPA3255 AMP.
I for instance am waiting to see what they can get from that chip
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Old 2nd April 2019, 12:30 PM   #35
Ita0101 is offline Ita0101  Israel
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What about the 200ASC that will come back to stock in a month at PE?
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Old 2nd April 2019, 08:09 PM   #36
Bicicletta is offline Bicicletta  Europe
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Default Another way

Quote:
Originally Posted by mikoy View Post
...
Cost breakdown
1. GA-S500P Stereo Power Amplifier (Dual Mono) DIT kit US$310
-200mm x 315mm amp case with dual-mono rear-plate
-all needed audio connectors
-RTX-B(0db, 100K) module
-Custom Power supply/signal Harness for two 125ASX2
2. Two 125ASX2(BTL) - US$277
...
What do you guys think?

The theoretical and preparation phase is gratifying. I try to prolong it, by collecting discarded electronic stuff for a couple of months.
Old cases have thick and non-optimized sheets.
If I buy cheap accessories, they simply don't work. If I buy quality parts, I spend on them as much as an industrial device. Instead, I can get functional parts from garbage.
Wrong purchases of the past can be rethought.
Sustainable.
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Last edited by Bicicletta; 2nd April 2019 at 08:10 PM. Reason: typo
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Old 2nd April 2019, 09:29 PM   #37
mikoy is offline mikoy  Canada
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Quote:
Originally Posted by ceausuc View Post
If you are looking for ICEpower amps how about this XTZ:
XTZ EDGE A2-300 power amp - XTZ Sound in Balance
I'm not an expert but it looks well built, I think there is also some sort of buffer on the RCA inputs. Has good reviews and fair price.

On the other hand, Allo Audio is working on a TPA3255 AMP.
I for instance am waiting to see what they can get from that chip
Comparing the pictures, Emotiva PA-1 and XTZ use the exact same 300ASC icepower board. Only difference is Emotiva is mono and XTZ stereo/mono selectable. Price wise, the Emotiva is cheaper, 495 = US$553.
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Old 2nd April 2019, 10:30 PM   #38
e_fortier is offline e_fortier  Canada
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ICEPower 50asx2 kit
Actually these models are not using the same components:

Emotiva PA-1 is monobloc using 1 x 300ASC / ch.
XTZ is stereo using 1 x 300ASC and 1 x 300AC (amp only powered by 300ASC)

The Emotiva should theoretically cost more.

BR
Eric
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Old 3rd April 2019, 07:33 AM   #39
ceausuc is offline ceausuc  Romania
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Quote:
Originally Posted by mikoy View Post
Comparing the pictures, Emotiva PA-1 and XTZ use the exact same 300ASC icepower board. Only difference is Emotiva is mono and XTZ stereo/mono selectable. Price wise, the Emotiva is cheaper, 495 = US$553.
I think* 500E includes local VAT (~20%) that is not paid whne exporting outside EU. However the prices are comparable and probably both amps are good.
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Old 21st April 2019, 07:12 PM   #40
Bill poster is offline Bill poster  Thailand
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PA-1 (x 2 )has balanced inputs, XTZ is cheaper, at least in Europe.

Last edited by Bill poster; 21st April 2019 at 07:14 PM.
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