I was actually thinking of removing the onboard reg and cap multiplier and supply with a Jung regulator.
Do
Did you make the pcb of the jung regualtor?
If so, I would like to buy some.
Did you make the pcb of the jung regualtor?
If so, I would like to buy some.
Didn't have time to go through that yet... Been busy with other projects and my friend who will be making the layout has not been available. Will keep everyone updated when/if completed.
Do
Didn't have time to go through that yet... Been busy with other projects and my friend who will be making the layout has not been available. Will keep everyone updated when/if completed.
Do
In case your friend wants to share the layout, I'm willing to do a small run for personal/friends use.
Chris, where would you take the AC measurement for the impedance change? At the amplifier's line input/R2R shunt ladder output?
The theory (to be tested) is that the volume control (assumed to be at the front of the signal chain) and the active electronics' input (assumed to be next in the signal chain) form a voltage divider. If both channels' impedances are the same, they'll have the same voltage at the junction of volume control and active electronics for both channels.
All good fortune,
Chris
The theory (to be tested) is that the volume control (assumed to be at the front of the signal chain) and the active electronics' input (assumed to be next in the signal chain) form a voltage divider. If both channels' impedances are the same, they'll have the same voltage at the junction of volume control and active electronics for both channels.
All good fortune,
Chris
What type of signal would you pass into the amp to test? Regular music or test signal of some sort?
Thanks
Do
In case your friend wants to share the layout, I'm willing to do a small run for personal/friends use.
I have no problem sharing the layout with everyone once it is completed
Do
Better News
JC-80 apparently safe; house still standing yesterday. 47k acres scorched and fire still only 10% contained. 1000 firefighters on the ground with 100 engines today. LOTS of winged water tanks flying around.
InciWeb the Incident Information System: High Park Fire
We will prollyNot be working much on audio for a while so please work out all the issues so ole Wolfsin can build clean JC-80 next Winter
JC-80 apparently safe; house still standing yesterday. 47k acres scorched and fire still only 10% contained. 1000 firefighters on the ground with 100 engines today. LOTS of winged water tanks flying around.
InciWeb the Incident Information System: High Park Fire
We will prollyNot be working much on audio for a while so please work out all the issues so ole Wolfsin can build clean JC-80 next Winter
1Khz sine wave as signal any good for testing?
Nowhere near enough
100hz, 1khz and 20khz thd + 19-20khz IMD tests will do good
1Khz sine wave as signal any good for testing?
Yes of course.
Chris
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Source & Line
- Analog Line Level
- JC-80 eBay PCBs & Power Train