Hi,
I have one Kenwood DP-7010 and I would like to make some mods because now it's sounds pretty dull, but I've read that the PCM58 DAC should be awesome.
Could you give me some advice where I can start from?
Thank,
Svilen
I have one Kenwood DP-7010 and I would like to make some mods because now it's sounds pretty dull, but I've read that the PCM58 DAC should be awesome.
Could you give me some advice where I can start from?
Thank,
Svilen
Hi Svilens.
Fisrt, the schematic diagram of this cd player, you can get easily from internet.
Second, I had this one too but not satisfied in its sound so I modified it…
Here after some mod I did. The sound after, very detailed and intersting…
1. Replace 4 op-amp IC2, IC3, IC4, IC 5 (JRC465DD) by NE5532 or higher grade op-amp.
Remove R15 (1.33k) and connect by wire.
Remove C11.
Change value of R19 from 2.61k to 1.33k ( just gotten from R15).
Change value C13 to 8200p; value C15 to 1200p (or 1500p if depend on your like more treble or not).
2. Paralell C26 (1000mF/25V) by 3300mF/25V and a MKP capacitor 0.1mF.
Change 4 rectifiers diode: D3,D4, D5,D6 by Schottky diode:1N5819 (1A-40V or equipvalent).
Paralell C24( 330mF/16v) by MKP capacitor 0.1mF.
3. Change C1, C2( 33mF/16V) near DAC (in a metal box) to 1mF/50V.
4. In metal box, there are master clock, use IC13 TC74HC04P.
Remove C110, C111 (15p), X1 (16.9344MHz).
Use a high grade clock ( low jitter…), supplied power and connect its pin out to pin 9 of IC13.
Fisrt, the schematic diagram of this cd player, you can get easily from internet.
Second, I had this one too but not satisfied in its sound so I modified it…
Here after some mod I did. The sound after, very detailed and intersting…
1. Replace 4 op-amp IC2, IC3, IC4, IC 5 (JRC465DD) by NE5532 or higher grade op-amp.
Remove R15 (1.33k) and connect by wire.
Remove C11.
Change value of R19 from 2.61k to 1.33k ( just gotten from R15).
Change value C13 to 8200p; value C15 to 1200p (or 1500p if depend on your like more treble or not).
2. Paralell C26 (1000mF/25V) by 3300mF/25V and a MKP capacitor 0.1mF.
Change 4 rectifiers diode: D3,D4, D5,D6 by Schottky diode:1N5819 (1A-40V or equipvalent).
Paralell C24( 330mF/16v) by MKP capacitor 0.1mF.
3. Change C1, C2( 33mF/16V) near DAC (in a metal box) to 1mF/50V.
4. In metal box, there are master clock, use IC13 TC74HC04P.
Remove C110, C111 (15p), X1 (16.9344MHz).
Use a high grade clock ( low jitter…), supplied power and connect its pin out to pin 9 of IC13.
- Status
- Not open for further replies.