audio-talk

Michael L wrote: ↑Sun Sep 03, 2023 10:46 am

Thermionic Idler wrote: ↑Sun Aug 20, 2023 11:07 am Very interesting - might give that a whirl. Hopefully there'll be a version for us awkward Linux types in due course...

....and Mac!

I've been doing my latest Spice sim work in KiCad (as that does run on Linux), works surprisingly well actually.

Sorry, only just seen this thread - I built a pair of 300B push-pull monoblocks in 2020 as a lockdown project, and they've been our main amps ever since. I sourced the 300B's as matched pairs from here: https://brimaruk.com/valves/triodes/brimar-300b/ Now obviously these are re-branded Chinese-manuf...

Argh! Rant alert. So I'm re-reading (again) the Linear Audio Proteus article about the JFET current input front end (which I sadly can't share verbatim because it's paid-for content). And once again I am frustrated (admittedly it's partly down to the fact I've not been able to get the spice model to...

Mr Idler changes his mind again. :roll: So today I was re-reading the Linear Audio article about Erno Borbely's 'Proteus' JFET current-input stage again after driving myself mad trying to figure out the least-worst compromises for the pre-RIAA stage, and I think that with a 3 ohm cartridge, this ide...

I think I'm going to go with Aikido for stage 2 - it's an off-the-shelf solution that should work perfectly for this application. The E34F in the first stage, according to the Direct Heating Triode blog, gave a gain of about 160, or 44dB. We know we lose about 21dB in the passive EQ, and a standard ...

With the DAC project coming to its conclusion and having fitted my DH3S cartridge from Northwest Analogue, my attention is back to the LCR phonostage, to see if the Millett can be improved upon. This sort of follows on from my previous thread on the subject , but between the end of that thread and t...

Having taken the week off work, I finally summoned up the energy to fit the latest new arrival to the Tower of Power https://user.fm/files/v2-6639fbe6642ff4c5abf9296fc478258a/PXL_20230825_185127023.jpg It's good. Very, very good. https://user.fm/files/v2-266872614f0010fa9d49050d6ac11bd4/PXL_20230825...

Things have been on a bit of a hiatus the last month or so, as I've been busy migrating my desktop over from MacOS to Linux. KiCad in particular took quite a bit of config work as I always get into a bit of a mess with my own symbols / footprints, so I was migrating those and doing some housekeeping...

Very interesting - might give that a whirl. Hopefully there'll be a version for us awkward Linux types in due course...

Right then - so it seems that the Beaglebone isn't powering up because the linear power supply I've installed for it has a 'soft start' - after some Googling I discovered that if I unplugged the barrel connector and then plugged it in again, the Beaglebone booted up and worked normally. So it needs ...

Quick update - the build is finished, but the Beaglebone isn't starting up Too tired to do any troubleshooting, I'll come back to it next week. Build pics will follow.

Had some fun and games with the sigma22 board (bottom right) where R10 had to be desoldered and replaced with a different value. Turns out getting solder out of a through-hole with a simple solder sucker is nigh on impossible if it's connected to a ground plane on both sides, which acts as a nice l...

This screenshot was taken about 5 minutes ago. I love the way that the Fedex website still seems to think I'll receive the parcel between 9:20 and 13:20 today when the thing is evidently still at Stansted and not even on the fecking van. With the exception of JLCPCB shipments from China, I don't thi...

Power supply boards completed and ready for installation. Had some fun and games with the sigma22 board (bottom right) where R10 had to be desoldered and replaced with a different value. Turns out getting solder out of a through-hole with a simple solder sucker is nigh on impossible if it's connecte...

Sit-rep, not a whole lot to report. The order went off to Schaeffer early last week for the panels, and I am still waiting for them to ship. I have to populate some PCB's - the ones for the mains transformers arrived from JLC this week and I also have to put together the Salas power supply board, as...