Love your videos. I'm inspired and I want to recap my Celestion UL8's. 12, 16, 20 MFD at 20v. What different sources do you use to source your caps. I used Farnell for recapping my amp, but these are a little more elusive. Can you recommend any UK suppliers?
Sometimes. It depends a lot on the driver. Polypropylene capacitors tend to have a lower ESR value. If that's not accounted for you can cause impedance issues and make the speaker sound harsh or shouty etc. Really the speaker would be voiced with Polypropylene capacitors in the first place
I've since this video brought a second hand pair of tweeters. I've fitted them and measured them further. The woofers play louder than the tweeters. I reckon the around +/- 3.5 dB between 100hz to 10khz now. Not bad but not great. In all honesty having spent an evening listening to them there not great. A marmite speaker. They do something's well but not everything. Part 3 will be up soon. Thanks 😀
Thank you for your very instructional video, but you seem to have ended up looking at a curve and not listening to the monitor. One of the main differences between the 1960's and now, is that speakers were blind judged by accurate ears and not by test equipment. This is one of the main differences why older monitors sound genuine, and newer ones don't. When technical specifications overtook listening rooms the character of loudspeakers changed. Human hearing is not flat, human hearing is asymmetrical depending on body type, ear drum and countless other factors. All monitor speakers from the 1950's until the late 70's were balanced by human ear, after that it was deemed necessary that computer and digital reference was more salable by numbers. Oh; our tweeter gos up to 28Khz. when in reality human perception is nothing like a computer. I was shocked that you changed so many parameters of this monitor without ever hearing it, thinking that you did a good job. How on earth would you know, if you never listened to it in the first place Sir.
I always spend a lot of time listening to all the speakers I work on. The most important measuring device is your ear. It can measure well but sound awful. The opposite is true to. It's common for me to make changes by ear after all the measurements are done. You need both you ear and measurements.
Cheers for the mention Matt.
Sorry to hear one of the tweeters has an issue.
You’ve made them look really good 👍
Hi! This is so exciting! I've read somewhere that that turbine cap with its inverted dome is some kind of a phase plug device
so no part 3...?? I was just getting interested - whatever happened to the tweeter etc??
There is a part 3 but it's really just a slide show. I sourced 2 secondhand HF1300 in the end for these. The damaged one was corroded from memory
Love your videos. I'm inspired and I want to recap my Celestion UL8's. 12, 16, 20 MFD at 20v. What different sources do you use to source your caps. I used Farnell for recapping my amp, but these are a little more elusive. Can you recommend any UK suppliers?
Thanks for the comment. Glad your enjoying them. I use impact audio mainly for my crossover parts. Falcon acoustic are OK to. Delivery is slow though.
Well I replaced the caps. So surprised with results. Thanks again for the videos. 😀
Is it in general that I can replace electrolytic capacitors with poly capacitor?
Sometimes. It depends a lot on the driver. Polypropylene capacitors tend to have a lower ESR value. If that's not accounted for you can cause impedance issues and make the speaker sound harsh or shouty etc. Really the speaker would be voiced with Polypropylene capacitors in the first place
Did you get the +/- 3dB frequency measurement out of these speakers?
All the best,
I've since this video brought a second hand pair of tweeters. I've fitted them and measured them further. The woofers play louder than the tweeters. I reckon the around +/- 3.5 dB between 100hz to 10khz now. Not bad but not great. In all honesty having spent an evening listening to them there not great. A marmite speaker. They do something's well but not everything. Part 3 will be up soon. Thanks 😀
Thank you for your very instructional video, but you seem to have ended up looking at a curve and not listening to the monitor.
One of the main differences between the 1960's and now, is that speakers were blind judged by accurate ears and not by test equipment. This is one of the main differences why older monitors sound genuine, and newer ones don't. When technical specifications overtook listening rooms the character of loudspeakers changed. Human hearing is not flat, human hearing is asymmetrical depending on body type, ear drum and countless other factors.
All monitor speakers from the 1950's until the late 70's were balanced by human ear, after that it was deemed necessary that computer and digital reference was more salable by numbers. Oh; our tweeter gos up to 28Khz. when in reality human perception is nothing like a computer.
I was shocked that you changed so many parameters of this monitor without ever hearing it, thinking that you did a good job. How on earth would you know, if you never listened to it in the first place Sir.
I always spend a lot of time listening to all the speakers I work on. The most important measuring device is your ear. It can measure well but sound awful. The opposite is true to. It's common for me to make changes by ear after all the measurements are done. You need both you ear and measurements.
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