Hi Apex
greetings is circuit 100% correct i want to give it a try just need little guidance from you for this project
warm regards
andrew lebon
greetings is circuit 100% correct i want to give it a try just need little guidance from you for this project
warm regards
andrew lebon
Hi Good day every one here on DIY! I all so build H900 v.2 power amp. I start it up with HV+110dc HV+ 45dc 0v LV-45dc LV-110dc This is only for a test. Nothing heat up, when put in signal, no sound came out of it. Please can any one tell me what I doing wrong here please?
are u sure this correct ?
HV+110dc HV+ 45dc 0v LV-45dc LV-110dc
this would be HV+110dc LV+ 45dc 0v LV-45dc HV-110dc
if this correct. And psu normal, check the input stage.
Regard.
It works, but it has some drawbacks. Of course it was designed for subwoofer application, but we have to increase the quality somehow.
Anyway it looks frustrating that the psu is 3 times more complicated then the amplifier itself 🙂
Sajti
Yes I connect it the rite way, but still not sound out it. How can I upload pictures here to show you guys?
Like this,
To add a photo, files or non standard files.
First click "go advanced" in the box below the "quick reply" message box. Doesn't matter if you decide half way through a message to do that, it carries it forward.
Then click "Manage attachements". Maximise the new Window so that you can see all the text.
Click browse in the first box at the top and find your picture. Repeat for any more pictures.
Click upload... a message appears "uploading"
When complete the files will show as being attached. Now click the small text that says "close this window"
The pictures should now be attached and when you submit your post they will appear.
Make sure your pics aren't too big, a couple of 100k is plenty, and many members object when they are massive and it alters the margins
It tells you in the attachments window what max sizes are allowed.
If you want to attach a file that has a non standard format for example excel, circuit simulation etc then try putting the files in a zipped folder and attaching that.
Here is my H900 I build, I'm so excited to hear how this one sound. But got some problems on it.
pls check the pin orientation of your ne5532 i cannot see good on your photo. then d0nt forget the jumper and proper groundings. pls check the voltage this diagram can help you
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Last edited:
Thanks
@ Sandman 15th, thanks for all your help, I will keep you updated about my testing on my H900. I'm really excited about this amp. I build the b500 with help of Sir Irvyne. He help me solve some problems on the b500. It work like a bomb and sound very loud and clear. Look here is my b500. As you can see here on my pics, I drive four 15inch 4ohm speakers on that b500.
@ Sandman 15th, thanks for all your help, I will keep you updated about my testing on my H900. I'm really excited about this amp. I build the b500 with help of Sir Irvyne. He help me solve some problems on the b500. It work like a bomb and sound very loud and clear. Look here is my b500. As you can see here on my pics, I drive four 15inch 4ohm speakers on that b500.