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|22nd February 2013, 02:22 PM||#1|
Join Date: Feb 2013
Squeezebox Duet Fikus mod need advice!
Okay this all started when I first discovered noise through my PCís coaxial output from this card.
Noise is only audible with my amp nearly maxed out but it still annoyed me.
To isolate this noise Iíve tried with various other sources and at the very end the coaxial input was the culprit. For some reason even with the coaxial input connected will generate the noise even with a different input selected on my amp!
So I switched to the SPDIF output and voila problem solved. Then I had a thought, since SPDIF is on the same card the noise is probably still there just I canít hear it so I began looking for a better transport.
As I canít buy a new transport (currently saving for a First Watt amp) I begin looking around for alternatives. I found my squeezebox duet lying around unused and did a bit of researching. Then I found this mod by Lukasz Fikus.
I read this makes the Duet ďbeats the 5000 dollar...Ē I was excited, and it had graphs! Must be true. I quickly read over instructions/parts, it turns out the mod is very simple and inexpensive to boot.
Then it turns out my Duet and Mr Fikus duet was slightly different, namely the three legged regulator doesnít exist on my board.
I looked around for other ways to clean the power that the Duet was receiving and every audiophile grade PSU was more costly then the Duet itself then I had an idea. I have always remembered the cleanest power was power that is already in DC and did not need converting, thus a battery. This should do it, a fairy cheap 8500mAh at 9VDC.
15000mAh Portable Rechargeable Lithium Battery Power DC 12V 9V USB | eBay
As I was looking for the missing three legged regulator I looked under the wireless card and although I couldnít find it I found other similar connections namely 3V3 and 1V2.
This first time Iíve soldered such small joints so I tried to simplify the steps.
220nF 630V Cap
Edit: Disregard the links above seems like I didn't do my homework guess there is no point upgrading with bad caps so I have ordered the following:
Step 1: 1x Mundorf E_Capacitor_073_BR63 220uf / 23VAC-63VDC
Step 3: 2x Mundorf E_Capacitor_066_BR100 47uf / 35VAC-100VDC
Step 4: 1x Mundorf F_Capacitor_103 MKP- 0.22uf / 630V, M-CAPģ MKP Series
1x Kiwame Resistor_66167 200R / 2 watt
1x Kiwame Resistor_66157 75R / 2 watt
Edit 2: removed LAN power cap upgrades as they won't fit.
Last edited by essencez; 22nd February 2013 at 10:48 PM.
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