Philips CD100

[es44]

You are the best

I also like that you put your tweaks on paper, that makes it easier to follow for a guy like me, that have never been inside a cd-player before

Thanks again

[Roemhild]

you have never seen the Inside of the CD100??

Here are the three PCBs before I have tweeked them.


PCB 1:





PCB 2:





PCB 3:

[es44]

Actually i haven't had the nerve to take it apart yet, been afraid to destroy what is okay now. But from the pictures i looks as if ther's room for all my thumbs

[hifiwolf]

Hello,
nice to hear that somebody is a fun fore old CD players.
I have last year listened only player CD 101. ( Meridian 506.20 sound I don't like any more ) The schema is similar to CD100. As I am a lover of natural and lively sound , must say that most of upgrades , what people are made usual by new players, aren't work by Philips 20 years old player. Better rectifier ( shottky ), polypropylene coupling capacitors by power supply, better OPamps BB are made the sound bad -colder and more died.
I have changed all Philips capacitors to ELNA Cerafina and Silmic.
I have tested OPA2134, OPA 627 and must say that something was better ( bass response and hights ) but it was not my taste. The midrange and voice was more clear, dynamic, lively only with NE5533N. I have tested different 5533- Philips, Texas Instruments, Signetic and my favorites are: 1. Signetic 2. Philips. If you can find Signetic or Philips NE5533 AN it be best choice (it is special made for audiophile listening ). I have made for opamps separately special power filtering from 12 V to 9 V ( trough TL431 positive and negative supply ). This was very good for sound. For opamps I use BlackGate FK 100mf and 0,1 mF film capacitors directly connected to OPAmp pins. Please compare , before upgrade, opamps- NE5533 and OPA627 and it can be fixed how different they sound is! But as I says- I live natural and lively sound. It is only question of the taste.

[hifiwolf]

Sorry for the mistake :
It is NE 5532 and not 5533 !!!! Dual OPA NE5532N or better NE5532AN

[es44]

Thanks a lot for sharing experience. Actually i like the sound of it as it is, but if it could be improved, that would be fun.
I don't use it that much, mostly when people come around to show them, that the oldies aren't bad at all
( maybe bacause i'm an oldie myself )

[jives11]

I agree. I have kept the 5532's in my philips CD104. When I experimented with other opamps they changed the sound, but eventually I came back to the much maligned NE5532. Other OPAMPS sounded more detailed initially, but over time this seemed to be brighter and more fatiguing.

I'm interested in the 9v regulated supplies. Mine just runs off the normal +/-12v supplies but with Cerafine caps.

[wojtek.l]

In cd304, cd7500 I tested opa 627, opa 2132, 2134, 2604, ad825>ad797, opa627>opa134 and the winer is ne5532 (more natural sound)

[Roemhild]

Hi,

right now I am trying the OP275GP from Analog Devices. This OP has more details and is "clearer" in the resolution.

greets Till

[Jimmyhaflinger]

Hi you all,

I have finally fixed the CD-100, it just had bad contacts in the door switch, bending them a bit allowed it to play.

Then it had dirty laser lenses and some dry and cracked solder joints.

Anyway, i think it sounds great as-is, so i will not swap anything inside... replacing the original blue jacket axial philips capacitors is quite a bad idea as they're extremely reliable and durable, while modern capacitors are likely not...

and the original components always look way neater!

Francesco