gabanyayaya,
thats a lot of quoting.. maybe if you just edit a little bit.. it will be easy on the eyes.. thanx.

too lazy

DIY job is for Enthusiasts.

I have placed an order for the cap. it is all Panasonic for audio. no FM/FC series for small cap. also I hope to get the crystal 16.9 MHz. if not, i go for full audio clock.

I am quite happy with the cdplayer. it is quite responsive.


Just in case not to miss the boat, I have got the boombox and I am buying the components soon.





This post has been edited by ccschua: Oct 27 2008, 09:55 PM

man, where do you guys find this boombox...
i've been searching high and low for it, there're all left with display units only...

From what was being said; Jusco and Mydin!

damn... i tried some jusco, tesco, carrefour, HSL, seng heng with no results...
swt... must be kena sapu by the rest of the crazy LYN forumer LOL

That is what I thought!
There was some being sold, then after Jusco and Mydin was being mentioned, they're all gone!

so here come the victime no 1. waiting for operation room.

I hope my unit dont end up ICU. Still gathering the component. I am split between ELNA and Panasonic ECA. Looks like Blackgate is out of reach for me.

---

Added on October 29, 2008, 7:24 amany takers. I found these items.

2 x MSR860
0300-8441 oscillator
LM7808
Dale 100R
Dale 300R
ERO 10n
PS PCB


This post has been edited by ccschua: Oct 29 2008, 07:24 AM

just get panasonic FC .... is more than enuf after sucess than only upgrade better caps

---

Added on October 29, 2008, 5:04 pmwho sucess the mod pls share here

This post has been edited by abel: Oct 29 2008, 05:04 PM

I think this mod the most important thing is power supply. So I am taking time to get the correct item.

Phase 1 : power supply, citizen clock

Phase 2 : Audio-gd clock, separate power supply for clock.

i saw EZ-53 at Jusco Maluri i dunno using same transport or not

This post has been edited by abel: Oct 30 2008, 01:21 AM

How much for this model?
Can't saw if EZ-53 is 'higher' range than EZ-31.
diyaudio thread did not mentioned about this model..

on the box of EZ-53 says "MP3 playback" IIRC,
i believe that it's assume that if MP3 playback is supported, a different transport is used

It looks quite similar to EZ-31, except it's black.. price wise?

if support MP3, that means this model use diff controller, so it can not be used.

Jazzy, any news on the metal block ?

So, it must be EZ-31A huh..

Was not able to get him last week. Hopefully this weekend ler.. Sorry for the delay...

i don't think you pay much attention to your power supply that the computer power supply is one of the worst as it inject noise to the mobo and soundcard.

i used to get click sounds when i move my mouse, so funny yeh. Fixed that by changing to another power supply, the new one gave me another problem, noise when the CD ROM is spinning, hahahaha

Hi Vincent,

U need to go deeper into what Empy has to say. I totally dont deny the fact digital is the future, just that how cloce is that corner.

Somehow more parts arrive.

This post has been edited by ccschua: Oct 31 2008, 08:01 PM

pls enlighten me, is CD not digital ? Why say the future is digital when we are using digital now?

does your speaker run on digital if you say digital is the future?

i'm questioning the use of a PC as the source than a dedicated CD Player.

i'm NOT questioning CD vs rip/loseless here.

This post has been edited by Vincent Pang: Nov 1 2008, 12:05 AM

Quote "
Just got my RCEZ31. My first impressions:
RCEZ32 (the one kevink talks about) has a better DSP chip (and one much closer to original Shig) than the RCEZ31 (which benefits/suffers from Sanyo's integration program which is meant to reduce chip count for low-end designers).
The fact that LC78601RE has to devote significant die space to an integrated u-controller w/ display block, lcd driver, and control processing means corners were cut in other areas and RFI interference between the blocks will be more common. I would rather see the influence of the display and control processing in the signal-processing block minimized by separate physical location, supplies, and decoupling of two separate packages. U-controllers are some of the nastiest sources of noise in a digital system...
On the other hand, what is nice about the RCEZ31 (and which improves on Shig even) is the connection between laser pickup and ASP is made as short as possible, with the ASP located directly under the laser sled. Note however that reducing the distance here increases the influence of spurious radiation and cares should be taken to shield the two blocks with shield lines or anti-EFM material (in early Flatfish it was a ground shield around the eight-lead harness carrying the pickup photodiode and track error signals). Note also that the direct connection between main pcb and laser sled mechanism means that there will be mechanical disturbances created by the servo motors on a pcb stuffed with microphonic ceramic chip caps and digital ICs. I would strongly advice detaching the pcb from the laser sled assembly, and making the connection to the motors via short wires, rather than letting the motors have their ways with that pcb. I would also recommend removing that plastic housing guard over the laser pickup--less is better here--and (unlike 47 Lab Shig) mounting adjustable spikes for the CD player directly on the four stand-offs that support the laser assembly unit, with some added mass, rather than spiking a traditional chassis at some point located a distance from the stand-offs or placing the whole thing on some wood/metal/ceramic plinth. The resonances from the CD mechanism need to leave it as directly as possible, and there is no more direct route than the stand-offs. Also, the manufacture of a precise delrin platter/clamp which fits tightly to the motor shaft without need of any bonding substance is also very desireable.
One thing: do not waste your time. The ASP and DSP will present a bottleneck in terms of spec and number, but have little to do with sound quality: I spent hours playing with different RF amp configs, and putting high-quality passive components into the PLL clock generation circuit (two years of tinkering with Caddocks and BGs on an old Flatfish, where the board was through-hole and parts were easy to swap) to no avail. Besides mechanical construction (which is very important), the biggest bottleneck for a system like this will be the supply regulation, grounding and decoupling. Indeed, some regulators are better tha others, and the 5V regulator sitting inside the MM1469 has at best 75dB rejection at 1kHz during steady state operation (they do anything to optimize their specs); during heavy servo operation, it is far worse, and there is quite alot of noise of all frequencies modulated into the 5V reg block, esp. during TOC and track skip operations. Being a linear reg means that it cannot filter out HF and RF noise, but passes it through: result is a white, bodyless presentation, without fundamental tones (my main criticism of 47 Lab digital players). I won't criticize JVC: budget is budget. It cost me Eu39! Their player is fast, and rhythmic. But the PSRR at 10MHz or at 100MHz is next to nil. The noise will get into your chips, get stored in parasitic capacitances, released a little later, generate offsets, modulate or be modulated by your RF digital signals, generating all kinds of intermod products, noise modulations, etc. etc. My advice: Do not use MM1469 as your final reg. Using the LM7808 as a pre-reg for the MM reg is only half a solution. Using a low-noise, low-output-impedance 5V reg with good dynamic performance (like the ALWSR super-reg or other) for your ASP/DSP combo (and another separate one for the internal 1-bit DAC if you are using the analogue out option) while adding some series resistance before good local decoupling will suprise you even further how good this chip combination can sound.

" unquote

This post has been edited by ccschua: Nov 3 2008, 09:28 PM