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Old 1st July 2011, 09:23 PM   #101
jkeny is offline jkeny  Ireland
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I just read the Hifimediy T4 product page & see that it can take PWM inputs directly. Has anybody used these inputs & have comments or how are people feeding this amp - doe sit have analogue inputs?
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Old 1st July 2011, 09:30 PM   #102
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Of course it has analogue inputs...there's TC2000 controller doing the job;-)
To be honest I didn't find PWM input connector on the board....and I don't know any source with this kind of output signal...
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Old 1st July 2011, 09:32 PM   #103
jkeny is offline jkeny  Ireland
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Sorry, I'm just catching up with this product so forgive my naive questions. This i staken from the T4 product page:
"It also have an PWM digital input which means it could be connected to digital out of the DDX amplifier for example or another amp with PWM output."
And
"*2nd PWM signal input."
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Old 1st July 2011, 09:46 PM   #104
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Theorically it's all right...that chip has another PWM input...but if you look at the board ...Personally I can't see any PWM input (ther's only 4pin analog and shut-down service signal).
It's an interesting question to be done to Hifimediy; try to ask them.;-) Steiner is very kind and will answer you soon.
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Old 1st July 2011, 09:53 PM   #105
jkeny is offline jkeny  Ireland
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I take it that there no manual with the board? There seems to be a bank of 10 hole solder pads just below the C47 capacitor - this may be where to connect?
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Old 7th July 2011, 05:50 PM   #106
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Quote:
bank of 10 hole solder pads just below
On other amps there are similar pads. To connect = nowhere. They must have other functions than to connect anything.

@WHALEMAN: Please give us your latest update with the board!

Thank you all
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Old 7th July 2011, 06:19 PM   #107
jkeny is offline jkeny  Ireland
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These are the PWM input pads as confirmed by Steinar - just looking for the pin designations to investigate marrying a PCM to PWM front-end with this board
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Old 7th July 2011, 09:20 PM   #108
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Great news!!
Now the problem is to feed tha amp with a proper PWM signal...;-)

Last edited by Centvrion; 7th July 2011 at 09:32 PM. Reason: Misunderstending....:-)
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Old 8th July 2011, 12:55 AM   #109
jkeny is offline jkeny  Ireland
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Well there are a number of PCM(read I2S) to PWM chips from TI which I need t investigate - I'm sure they have been discussed here already - must search.
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Old 8th July 2011, 09:49 AM   #110
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This is probably not the best one, but seems to be interesting.....
Should we open a new thread?
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