You need a 690 Ohm resistor bettween sleeve and tip of the jack to add the volume. but the system always starts from default sound level (low) after being disconnected to power so you definitely want to assemble a simple button to raise the volume
Thanks for taking the time to post this information - this will bring a lot of hope to those struggling without the volume control. If anyone out there tries this, please respond with your results to confirm it works. It really does help all of us with the same problem.
thanks for the review I have these still working well after many years as computer speakers as originally intended. One tip you may already know is if you depress the two volume switches on top of the right champagne glass speaker it mutes the volume, touching both or either again restores the sound. thanks again!
I have this sub unit without the speakers, so I need to replicate the volume controls with this diagram. If I understand correctly, the jack base or sleeve is the speaker ground and button logic common ground. The center ring is the speaker positive, and the tip would be some reference voltage for the button logic. R23 is just the LED current resistor and probably not needed. Also, what is the impedance of the original speakers? Thanks.
The original speakers were 8 ohms each. 2 in each side speaker enclosure and wired in parallel. If you go this route make sure you wire them in phase with one another.
@@colemanus1318 So 8 ohms at the jack? I have only 3.3k resistors, I'll see if they work. 2 in parallel will give me 1.65K for SW2. Hopefully that drops the voltage close enough when pressed.
All I can say is that I just sketched out the volume control circuit from my unit’s volume control to the best of my ability, I did this to aid people, like yourself, needing somewhere to start. What the design criteria is, or how it works, I have no idea. As you don’t have the original side speakers, perhaps if you scan through this video where I replace the damaged loudspeakers may help in someway. th-cam.com/video/jiw68RqqAM0/w-d-xo.html
Hello! I have the same problem! hahaha, did you manage to make it work with the diagram? to encourage me to do it, because connect the sub with other speakers and it sounds very low and you can't turn it up without those controls. Thank you!
@@CrisPoh I didn't have the exact resistors or the LED. I was playing around and managed to only turn the volume down completely. I haven't looked at it since.
I have the working subwoofer only. I notice the square jack(for the volume) is like stereo jack. Can i connect it direct (the sound at max vol) without the control volume part?
Presuming you are controlling the volume by some other means, there is only one channel coming out of the jack socket. From the sketch in the video the sleeve of the jack is the common rail. Audio to the speaker goes via the "sleeve and ring", whilst the volume is controlled via the "sleeve and tip" of the jack. If you have a two pin jack that fits? The business end only has a "tip and sleeve". In this case the sleeve will effectively short the audio output. Hope that makes sense and thanks for the question, good luck!
My friend complained about very low sound. Initially I thought the problem may have been in the preamp which is housed with the subwoofer unit. The subwoofer was working fine. However, the side speakers were very low and slightly distorted. The speaker cones were non-existent! They had crumbled to nothing. Worth checking this first by removing the speaker grill to the side speakers. If these are intact then the problem is elsewhere. Always worth checking all the plugs and sockets first before looking for problems like this. Start with the simple stuff, don’t go looking for trouble unless you have to. As to the amplifier and preamp - I know nothing about the circuit details for fault finding.
You need a 690 Ohm resistor bettween sleeve and tip of the jack to add the volume. but the system always starts from default sound level (low) after being disconnected to power so you definitely want to assemble a simple button to raise the volume
Thanks for taking the time to post this information - this will bring a lot of hope to those struggling without the volume control. If anyone out there tries this, please respond with your results to confirm it works. It really does help all of us with the same problem.
thanks for the review I have these still working well after many years as computer speakers as originally intended. One tip you may already know is if you depress the two volume switches on top of the right champagne glass speaker it mutes the volume, touching both or either again restores the sound. thanks again!
What can I do if I lost the speakers?
The volume buttons on my hk695 works but the max volume is very low, is it related to this module?
I have this sub unit without the speakers, so I need to replicate the volume controls with this diagram. If I understand correctly, the jack base or sleeve is the speaker ground and button logic common ground. The center ring is the speaker positive, and the tip would be some reference voltage for the button logic. R23 is just the LED current resistor and probably not needed. Also, what is the impedance of the original speakers? Thanks.
The original speakers were 8 ohms each. 2 in each side speaker enclosure and wired in parallel. If you go this route make sure you wire them in phase with one another.
@@colemanus1318 So 8 ohms at the jack? I have only 3.3k resistors, I'll see if they work. 2 in parallel will give me 1.65K for SW2. Hopefully that drops the voltage close enough when pressed.
All I can say is that I just sketched out the volume control circuit from my unit’s volume control to the best of my ability, I did this to aid people, like yourself, needing somewhere to start. What the design criteria is, or how it works, I have no idea.
As you don’t have the original side speakers, perhaps if you scan through this video where I replace the damaged loudspeakers may help in someway.
th-cam.com/video/jiw68RqqAM0/w-d-xo.html
Hello! I have the same problem! hahaha, did you manage to make it work with the diagram? to encourage me to do it, because connect the sub with other speakers and it sounds very low and you can't turn it up without those controls. Thank you!
@@CrisPoh I didn't have the exact resistors or the LED. I was playing around and managed to only turn the volume down completely. I haven't looked at it since.
I have the working subwoofer only. I notice the square jack(for the volume) is like stereo jack. Can i connect it direct (the sound at max vol) without the control volume part?
Presuming you are controlling the volume by some other means, there is only one channel coming out of the jack socket. From the sketch in the video the sleeve of the jack is the common rail. Audio to the speaker goes via the "sleeve and ring", whilst the volume is controlled via the "sleeve and tip" of the jack.
If you have a two pin jack that fits? The business end only has a "tip and sleeve". In this case the sleeve will effectively short the audio output. Hope that makes sense and thanks for the question, good luck!
@@colemanus1318 yes, I will use the source to control the volume, I think the problem can be solved from your explanation. Thanks mate 😃
I try on stereo jack , it sound low by connecting it on L(tip) & R(ring), no signal if connect to sleeve.
Grasias me sirvió mucho te lo agradezco ya di like y nuevo suscripción
It is pleasing to know the video helped, and thank you for taking the time to comment.
Hello i need original picture volume control fornt & back side pls
I would like to oblige - but I gave the audio speaker system away sometime ago, so can't help on this occasion.
Im meking cricut as par your daigram but not working
Sorry, I can't help on this occasion as I gave away the speaker system some time ago.
thank you
You're welcome
Pls sir
The volume buttons on my hk695 works but the max volume is very low, is it related to this module?
My friend complained about very low sound. Initially I thought the problem may have been in the preamp which is housed with the subwoofer unit. The subwoofer was working fine. However, the side speakers were very low and slightly distorted. The speaker cones were non-existent! They had crumbled to nothing. Worth checking this first by removing the speaker grill to the side speakers. If these are intact then the problem is elsewhere. Always worth checking all the plugs and sockets first before looking for problems like this. Start with the simple stuff, don’t go looking for trouble unless you have to. As to the amplifier and preamp - I know nothing about the circuit details for fault finding.
@@colemanus1318 Thank you for the tips.