Kenwood DP-7010 modding

svilens · 16th February 2011, 08:28 AM

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

svilens · 3rd March 2011, 10:44 PM

Anyone can give an advice?

Thanks in advance.

hieuvu · 30th November 2011, 02:43 AM

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.

16th February 2011, 08:28 AM	#1
svilens diyAudio Member Join Date: Feb 2009	Kenwood DP-7010 modding 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

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3rd March 2011, 10:44 PM	#2
svilens diyAudio Member Join Date: Feb 2009	Anyone can give an advice? Thanks in advance.

30th November 2011, 02:43 AM	#3
hieuvu diyAudio Member Join Date: May 2007	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.

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