Almi's Logitech Z-5500 Mod (High-End upgrade for the speaker system)

[Peppie1980]

Nice job!
How do u safely remove the PCB ftom the coolerplates anyway? Theres these micastrips and white pasta all over.

 

[demercy1]

This Topic in Wonderful

how can we know if it is really worth selling a logitech z5500 and actually migrating to another sound system, such as the yamaha hs8 studio box, or is it worth taking the time to try to make a mod like this on the topic?

 

[Peppie1980]

For the small amount of money it costs, I think this system is not bad at all. There's no hdmi, true, but there is analog input. For a PC this system is fkn awesome. For your TV in the living room like an LG OLED C9 or better, this system is in my opinion to small.

 

[mind123]

Hello,

First of all, thank you ramachandra for this awesome tutorial. I have a Z5500 speakers, and since they are kind of old, the sound does not look so good now. I could buy other speakers but this one has a sentimental value to me, that is why I am looking for an upgrade.

In accordance with the FAQ, I’m thinking about change only the first 3 things:
What part of the mod is the best bang for the money?
- OpAmps 40% (special in the SUB)
- 22uF & 47uF capacitors in the SUB 30%
- The two main filter capacitors 15%

Since I will try the mod 3 I will need also 5 pcs 0.47uF 63V axial film capacitors

I am thinking to buy these components. Could you please confirm if they are compatible with the components recommended in this forum?

----OpAmps 40% (special in the SUB)----​

2x TI OPA1602AID: ​

https://www.digikey.pt/product-detail/en/OPA1602AID/296-28930-5-ND/2679365/?itemSeq=340644244​

​

----0.47uF 63V axial film capacitors ----​

I need help with this one because I am not sure if it is equivalent.​

5x CDE - 150474J100DC:​

https://www.digikey.pt/product-detail/en/150474J100DC/338-4260-ND/1930578/?itemSeq=340644847​

​

---- 22uF & 47uF capacitors in the SUB 30% ----​

13x Elna America - RFS-50V220MH3#5:​

https://www.digikey.pt/product-detail/en/RFS-50V220MH3#5/604-1122-ND/2171173/?itemSeq=340643573​

6x Elna America - RFS-50V470MH4#5:​

https://www.digikey.pt/product-detail/en/RFS-50V470MH4#5/604-1127-ND/2171178/?itemSeq=340644474​

​

---- The two main filter capacitors 15% ---- ​

I did not find the ELNA in this site, that is why I am thinking about Nichicon. I hope that does not make a huge difference.​

2x Nichion - LKG1H103MESCBK :​

https://www.digikey.pt/product-detail/en/LKG1H103MESCBK/493-13364-ND/1964421/?itemSeq=340645324​

Thank you in advance, and I hope that I do not mess up, because like I said they have a sentimental value to me.

 

[Peppie1980]

well, ramachandra hasn't been here for ages, but i am sure u have the right parts from looking at it. i kinda fkd up mine honestly. I only get a big long hum out of the woofer now. And i am not able to troubleshoot because it is not my field of work. I was hoping someone could point me in the right direction.

 

[mind123]

well, ramachandra hasn't been here for ages, but i am sure u have the right parts from looking at it. i kinda fkd up mine honestly. I only get a big long hum out of the woofer now. And i am not able to troubleshoot because it is not my field of work. I was hoping someone could point me in the right direction.

I am sorry to hear that, you have no idea what you did wrong? I really want to do this upgrade, but I am afraid that something goes wrong, and your problem could be my problem as well. I hope that you find out what is wrong, and maybe someone can help you with that matter.

 

[Peppie1980]

yeah me too. I already bought a new set. so all is well. but i am stucck with one broken set which is easy to fix i think, but i lack the knowledge.

 

[mind123]

yeah me too. I already bought a new set. so all is well. but i am stucck with one broken set which is easy to fix i think, but i lack the knowledge.

Did you apply this mods on the new set?

 

[Peppie1980]

I only did the 5 opamps

 

[mind123]

I only did the 5 opamps

Ah nice. Sorry to boring you with this questions, but did you find a difference in the sound quality? Do you recommend change only the Opamps, or should I do the full mod 3 like I mentioned before?

 

[Peppie1980]

ah, u dont bother me at all, i love seeing this thread relived again.
am sorry i didn't understand your question. No, i did not have the guts the do the mod on the new set. i might destroy it too and that would be really crappy.

 

[mind123]

ah, u dont bother me at all, i love seeing this thread relived again.
am sorry i didn't understand your question. No, i did not have the guts the do the mod on the new set. i might destroy it too and that would be really crappy.

Ah I see. It would be nice if this thread relived, and the guys that tried this mods shared their experiences. I really want to do this, but like I said before I am afraid to mess up and destroy the speakers :/

 

[Peppie1980]

I understand! i ruined mine already. if u read the entire thread u pretty much know whatt to do, and i also think that the third mod is easier, less soldering.

 

[triturbo]

Great topic! Wanted to ask if anyone can reupload the pictures in the first post or if somebody made a back-up? Thanks!

 

[l0NeXuS0l]

Hello!
Can I change the opamps on the subwoofer board without changing other components?
You mean, like, they just take the old ones out and stick the new ones in, and everything works?
Doesn't anything else need to change?
I understand that there is a radical change in the sound after replacing the opamps in the subwoofer box.