I edited it quite a bit you might want to refresh one more time.
You're welcome!
Search found 5332 matches
- Fri Dec 08, 2023 4:12 pm
- Forum: Build
- Topic: Phono Transfer System Construction Information
- Replies: 234
- Views: 362099
- Fri Dec 08, 2023 4:01 pm
- Forum: Build
- Topic: Phono Transfer System Construction Information
- Replies: 234
- Views: 362099
Re: Phono Transfer System Construction Information
Paul - R4 and R5 serve a couple of purposes. I build the boards with them at 100Ω. In high RF environments R4 and R5, along with along with C3+J3, form a differential LP filter around 8 MHz but C3+J3 are mostly for added termination C. What I found however is that with R4 and R5 in circuit and J3 op...
- Fri Dec 08, 2023 10:53 am
- Forum: Build
- Topic: Dual Class-A Line and Headphone Output Board Documents
- Replies: 133
- Views: 387483
Re: Dual Class-A Line and Headphone Output Board Documents
It did but I decided to change the weightings of side that were presented to the sleeve versus the tip and ring to further maximize headroom.
The thread is here - there's a lot I've forgotten: viewtopic.php?p=5607
The thread is here - there's a lot I've forgotten: viewtopic.php?p=5607
- Fri Dec 08, 2023 10:47 am
- Forum: Pro Audio Design
- Topic: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
- Replies: 43
- Views: 41432
Re: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
By the way, what got you hooked on them? I saw the thread you provided to "Gearspace", but I guess I was too lazy to read everything and make the connections to this thread. emrr originally sent me the link to GroupDIY IIRC and we had a post here once about equal weighting of sum and diff...
- Fri Dec 08, 2023 8:48 am
- Forum: Build
- Topic: Dual Class-A Line and Headphone Output Board Documents
- Replies: 133
- Views: 387483
Re: Dual Class-A Line and Headphone Output Board Documents
Crosstalk at 1 kHz with a 20 ohm load is not fantastic. I measured about 59 dB. Something about the current flow through a Left/Right channel headphone jack that has a common ground. It's close to 90 dB with no load, so the crosstalk is not due to any design error. Using 60 dB to round out the numb...
- Fri Dec 08, 2023 4:53 am
- Forum: Pro Audio Design
- Topic: Balancing Resistors Reduce Voltage Follower Common Mode Distortion
- Replies: 11
- Views: 8601
Re: Balancing Resistors Reduce Voltage Follower Common Mode Distortion
I remember that article. Thanks for linking to it!
- Fri Dec 08, 2023 4:52 am
- Forum: The Peabody Lounge
- Topic: Banned from GDIY but still alive
- Replies: 5
- Views: 544
Re: Banned from GDIY but still alive
It's a sleepy town without much action at night but the sidewalks never roll up.
- Fri Dec 08, 2023 4:50 am
- Forum: Pro Audio Design
- Topic: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
- Replies: 43
- Views: 41432
Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
I tried to match the Studer component values using the equations from Weaver. studer90m.JPG Six of the eight resistors came close, but two were off by more than 10% ? Calculated phase difference from the Studer schematic studer90a.JPG Calculated phase difference from the Weaver values studer90t.JPG...
- Wed Dec 06, 2023 8:28 am
- Forum: Build
- Topic: Dual Class-A Line and Headphone Output Board Documents
- Replies: 133
- Views: 387483
Re: Dual Class-A Line and Headphone Output Board Documents
Bob, thank you for posting this! I just looked back and you bought the assembled board from me on September 15, 2015. USPS Priority Mail was only about $6 then. You and the late Joe Neil were the first two customers in my store. My how time flies... I'll take a look at the data and figure out how ma...
- Tue Dec 05, 2023 4:23 am
- Forum: The Peabody Lounge
- Topic: Banned from GDIY but still alive
- Replies: 5
- Views: 544
Re: Banned from GDIY but still alive
Welcome!
I was wondering about that.
What an interesting story. Very similar to my 2007 exit.
Nice to see your avatar around these parts.
I was wondering about that.
What an interesting story. Very similar to my 2007 exit.
Nice to see your avatar around these parts.