Joe-
Awesome! This was an extremely clear and helpful answer, Appreciate your help.
Wes
8PAKAMP & 12PAKAMP KIT BUILD THREAD
Moderator: Joe Malone
Re: 8PAKAMP & 12PAKAMP KIT BUILD THREAD
Hi Joe-
So I have the amp working, it’s playing, just not as loud as it should be. To refresh your memory:
8pakamp, bridged Into 2 channels. I am running xlr from a Emotiva preamplifier (Xsp-1). I am also getting audible distortion at moderate volumes. Where would you suggest I begin with my troubleshooting activity? BTW, I am getting around +/- 36 VDC at my rails. Thanks again for your help
Wes
So I have the amp working, it’s playing, just not as loud as it should be. To refresh your memory:
8pakamp, bridged Into 2 channels. I am running xlr from a Emotiva preamplifier (Xsp-1). I am also getting audible distortion at moderate volumes. Where would you suggest I begin with my troubleshooting activity? BTW, I am getting around +/- 36 VDC at my rails. Thanks again for your help
Wes
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Re: 8PAKAMP & 12PAKAMP KIT BUILD THREAD
You will need to send me the max output level dBu spec for your preamp to see what gain is needed for max clipping.wessideg wrote: ↑Sat Aug 29, 2020 9:42 amHi Joe-
So I have the amp working, it’s playing, just not as loud as it should be. To refresh your memory:
8pakamp, bridged Into 2 channels. I am running xlr from a Emotiva preamplifier (Xsp-1). I am also getting audible distortion at moderate volumes. Where would you suggest I begin with my troubleshooting activity? BTW, I am getting around +/- 36 VDC at my rails. Thanks again for your help
Wes
Also since you dead shorted all the amp outputs to 0v with those terminals. I would be removing the share resistors and check all amp IC are still working individually and putting out the same exact level with a 1khz tone.
Joe
JLM Audio
Capturing Audio without Injury
JLM Audio
Capturing Audio without Injury
- Joe Malone
- Site Admin
- Posts: 2078
- Joined: Wed Jan 24, 2007 11:35 pm
- Location: Brisbane, Australia
- Contact:
Re: 8PAKAMP & 12PAKAMP KIT BUILD THREAD
Not really but wasted a lot of my time reading all of this. But since they use dBV it will not be pro output level. The balanced out seem to only have the rca output level +6dB due to the balancing.
If you have a scope you can check the output level of the preamp & amp peak to peak with a 1khz tone and see if there is enough level to clip with no speakers attached. or let me know the peak to peak level you are running out at. So I can work out the value to change all the 8PAKAMP 1k resistors down to.
Joe
JLM Audio
Capturing Audio without Injury
JLM Audio
Capturing Audio without Injury
Re: 8PAKAMP & 12PAKAMP KIT BUILD THREAD
Joe-
Sorry I wasted your time
-Wes
Sorry I wasted your time
-Wes