[YiouJr]

Hi,

I've noticed that the Z-5500 consumption is, with S/PDIF:

• ~10 W when off
• ~23 W after turning it on (without input signal)
• ~38 W once it has received some input even it stopped

I've also always been annoyed by the need to turn it on and off.

Now, the JBL Media 200 has an auto turn-on/turn-off feature:


I'd like to achieve that with the Z-5500.

I've thought about using an Arduino Nano or a Raspberry Pi Pico inside the control pod, to poll the input signal and control a relay.
Note that when the control pod is disconnected from the sub, the consumption drops to ~0 W. So the relay could cut that connection, then resume it and turn on the pod when a signal is detected.

Does anyone have any ideas or pointers?

That's a heck of a brilliant idea! But I would suggest to place it inside the subwoofer, since there isn't much space inside the pod. I don't know about disconnecting the control pod, but you can control the main AC lines to the amplifier, without messing much with the control pod.

I would use the 3-pin 8V regulator that powers the control pod to power the Arduino. Itself is powered by a second independent line from the transformer (blue wires). You can also directly use the pin 10 (+8V DC) maybe adding a step down converter to 5V.
For control signal I would use the stand by signal which is pin 6. To enable the system (thus your relays for the power) the pin is grounded. Use it as an input to your Arduino, and output a signal to two 5V relays controlling the red and yellow AC lines from the transformer to the rectifier.

 

[l0NeXuS0l]

Logitech Z5500 Mute On Over Temperature. Fix

 

[l0NeXuS0l]

Logitech Z5500 POD Control Power Supply/Signal Output Test​

Logitech Z5500 POD Control + Blaupunkt Amp​

 

[bulletng]

Hello, I'm still a rookie with this stuff, but I could use some help please. I recently dug out my old Z-5500 that blew up a few years back... The typical failure point occurred with my unit, but it took several components with it. I was hoping someone could help me identify replacements.

https://i.imgur.com/vaiTNdu.jpg
https://i.imgur.com/v96M489.jpg

I spent a couple hours digging through several forums and was able to figure out some of the components that I need to replace. However, I'm struggling to narrow it down, and could use some assistance please! Thanks

D18 - Bridge Rectifier (2W02G-E4/51) https://www.mouser.com/ProductDetail/625-2W02G-E4
WA1 & WA2 - Film/Suppression Capacitor (unsure?) https://www.mouser.com/ProductDetail/539-158X104K
C34, C35, C36, C37 - Resistors appear to be 22k?

 

[scratje]

C34, C35, C36, C37 are capacitors, which value i don't know and are hard to solder.
Rest is fine.

 

[l0NeXuS0l]

Speaker problems, OPAMP broken!

 

[rpcruz28]

Hello From Brazil. Since 2 years ago my pod come with the stand by light but doesn't switch on. I send to a electronic technician but he told me that the pod had a bad chip, but he is not an specialist and I believe maybe this is not the problem.
My question is, is there any way to plug from a 7.1 audio card to the back of the subwoofer?
thanks in advance.

 

[Rama Chandra]

Hello, I'm still a rookie with this stuff, but I could use some help please. I recently dug out my old Z-5500 that blew up a few years back... The typical failure point occurred with my unit, but it took several components with it. I was hoping someone could help me identify replacements.

https://i.imgur.com/vaiTNdu.jpg
https://i.imgur.com/v96M489.jpg

I spent a couple hours digging through several forums and was able to figure out some of the components that I need to replace. However, I'm struggling to narrow it down, and could use some assistance please! Thanks

D18 - Bridge Rectifier (2W02G-E4/51) https://www.mouser.com/ProductDetail/625-2W02G-E4
WA1 & WA2 - Film/Suppression Capacitor (unsure?) https://www.mouser.com/ProductDetail/539-158X104K
C34, C35, C36, C37 - Resistors appear to be 22k?

Hello, Those are 0.1 uF 63V ceramic capacitors if I remember correct. I had a broken bridge rectifier also on one of the boards, and I think one of the caps had to do something with the failure. The two wire come from the transformer is the AC and the DC + - pins can be figured out if you check how the holes of the pins connected to the 4700uF electrolyte capacitor nearby using the diode tester on the multimeter. I did not use the original component because that type is prone to fail easy. You can get the flat type of bridge rectifiers with long pins and bend the legs to fit in. This can give you some surface to solder capacitor to them if needed. I think I was using the KBP 206. I can be wrong about the exact type 10+ years later, but it was one from the same family, capable to replace the original.

 

[Rama Chandra]

Bad news: The Elna company shut down the production of their audiograde capacitors. I suspect they have not produce other than Silmic II for a while, Cerafines and entry level audiograde types just available as new old stock for some time. Probably they end up like the famous Black Gates as availability goes down, and price sky-high. I think not a bad idea to stockpile some audio grade caps in general, because pretty soon any audio grade capacitor manufacturer can get a bad hit, no matter how well they do now.

 

[l0NeXuS0l]

Hello @Rama Chandra!
How can I make the system output full range on the front speakers or at least a sound closer to full range!
And on the subwoofer side, how can I lower the frequencies?
I'm going to make a modification to the premises and I want to have frequencies below 30 hz!

 

[Rama Chandra]

With a proper sound card. The Recon 3D, Sound Blaster Z series support full range speakers on the front. Probably there is more out there.

The subwoofer's frequency response is between 33Hz-20kHz unless you replace the original speaker it is not going to happen. When you recap the whole system with Elna capacitors, you will get the bass you are looking for.

 

[K4Y0]

With a proper sound card. The Recon 3D, Sound Blaster Z series support full range speakers on the front. Probably there is more out there.

The subwoofer's frequency response is between 33Hz-20kHz unless you replace the original speaker it is not going to happen. When you recap the whole system with Elna capacitors, you will get the bass you are looking for.

Hi, I have a stock z5500 with no mods. I recently purchased a creative titanium sb0880 sound card. I was wondering if u could help with setting subwoofer crossover and setup front speakers as full range.

 

[l0NeXuS0l]

With a proper sound card. The Recon 3D, Sound Blaster Z series support full range speakers on the front. Probably there is more out there.

The subwoofer's frequency response is between 33Hz-20kHz unless you replace the original speaker it is not going to happen. When you recap the whole system with Elna capacitors, you will get the bass you are looking for.

Hi, thanks for the reply!
Finished modifying the subwoofer, including the POD Control!
I changed all capacitors with original Nichicon + OPAMP from the subwoofer and POD Control!
The sound is much better and stronger, especially the bass!
But I think the problem is with the subwoofer box, it cannot play frequencies lower than 35 hz!
I thought of replacing the box with a custom one and putting a 30 CM subwoofer!

 

[K4Y0]

Hi, thanks for the reply!
Finished modifying the subwoofer, including the POD Control!
I changed all capacitors with original Nichicon + OPAMP from the subwoofer and POD Control!
The sound is much better and stronger, especially the bass!
But I think the problem is with the subwoofer box, it cannot play frequencies lower than 35 hz!
I thought of replacing the box with a custom one and putting a 30 CM subwoofer!

Did u notice a difference in the crossover. The subwoofers plays above 125hz i think.

 

[K4Y0]

Hi, thanks for the reply!
Finished modifying the subwoofer, including the POD Control!
I changed all capacitors with original Nichicon + OPAMP from the subwoofer and POD Control!
The sound is much better and stronger, especially the bass!
But I think the problem is with the subwoofer box, it cannot play frequencies lower than 35 hz!
I thought of replacing the box with a custom one and putting a 30 CM subwoofer!

Btw where did u purchase the opamps and the 3 capacitors from?