audio-talk

Thanks rowuk, interesting stuff to mull over. Particularly that you couldn't find a valve buffer to your liking. The second half of an Aikido drives most stuff, did you ever try one? Just curious. I said that I could not find an exceptionally "neutral" valve buffer (including the Aikido)....

Has anyone tried using DSP to create a shallow crossover slope ? By which I mean getting a first-order slope at the crossover point, which then steepens further up, once the bass amplitude has dropped more ? Only, this is how I have done some of the more successful crossovers with passive component...

Thanks rowuk, food for thought. Do you have any suggestions for the choke suppliers? Simon, Nick is certainly a much better source for advice than I am! As I personally have only used caps and resistors, chokes are uncharted territory for me in regards to passive crossovers (I have only used them i...

At the end of the process, the optimised slopes are created in a passive analog crossover between the pre and power amps. I'm interested how you do that? A separate box of caps and resistors between the pre and power amps? Incorporated into the end of the pre? Something else? I'm currently using LR...

Thanks for your reply The problem I have is from about 200Hz down, and room related. I am using full range drivers down to 50Hz, and the last two octaves are tricky. One because of the small driver, and two because of the room For example, there is a notch in the left speaker caused by a bay window...

I think that the first step is always to identify the problem and then find a solution instead of having a solution for a problem that one does not have. The ability to power a woofer with a different amplifier than the rest has some very compelling arguments but also some caveats. If we are talking...

I believe Alex when he says that he had no access to these pioneering papers. Personally, Alex's work inspired me to build 3 of his amplifiers back in 2013. They still are all in service today and continue to offer very high quality playback in my main system. I think that it is proper to give credi...

If you are going to use thin oil, make sure that the bearing is sealed on the bottom. There is nothing worse than oil dripping on something electrical...

The motor engine will clearly have moving parts that are somewhat faster , but deos that mean the oil is not appropriate for slower speeds . I would hazard a guess that nobody actually knows and nobody as tested it , it is hifi afterall . But I bet those who pay a fortune for a peppet of snake oil ...

Max , you worry about motor oil viscosity and I'll worry about my gait 🤣 Is your gait temperature dependent too? 50 years ago I experimented and ended up using military grade silicone grease. The test was to spin the platter by hand and see how long it rotated (not very scientific - I know). The gr...

This is from another forum that I visit posted there by member SSMITH: The Beatles are back (thanks to AI). The first video can be found on Paul McCartney’s YouTube channel. This is a Paul McCartney recording with the addition of John Lennon’s voice as well as rejuvenating Paul’s voice. This was edi...

Linkwitz Transformation is a possibility here. Here is Rod Elliots/Jeremy Wolfs take and circuit:
https://sound-au.com/linkwitz-transform.htm
https://sound-au.com/project71.htm
https://sound-au.com/linkxfrm.zip

Linkwitz enjoyed great acceptance - even in the HiFi magazine world.

I tried using a woofer as a PR and hoped to have joy with resistors or shorting the voicecoil. It didn‘t work. I ended up painting the paper cone to make it heavier and harder - 50 - 100 grams heavier. That worked well. Rule of thumb: twice the area of the woofer. Add weight until you get the desire...

I found this in my documents:
Socket: Telefon 7-pin (G7K) it seems that this valve was used for telecommunication.

ed wrote: ↑Wed Feb 22, 2023 3:27 pm I got this link from following Ant's last post.
Some may not find it humourous, but I do, in fact I think it's funny and brilliant...

Brilliant it is! "Is bass" is bass?