hahaha. I know. It is super funny when they actually advertise that.
thank the lord my hearing is still good amazingly.
i did take care of my ears though and wore earplugs regularly.
Still can heat up to 16.5khz in my left ear and 16khz on the right.
but still that will wane with time.
and it’s funny you mention that, whenever I mess with XSIM and I check out the tweeter, as soon as I get to around 15khz I’m like yeah ok. Lol
14khz at your age seems really good though, if I were to guess you age by what you wrote. I’m 53.
yeah read all that about higher inductance in larger poly caps. Less in metalized film
I actually put in a couple Mundorf Mresist which tout negligible inductance in the xo and noticed a difference in the highs. A bit smoother. I could be wrong though. I mean it’s just a resistor.
Attachments
thanks for letting me be aware of that for any future measurements. I don’t think so. I was concerned about the contact so I don’t do any damage to the woofers. So I was careful for a different reason.
couldn’t edit my previous response.
yeah man I think I mentioned before that I am going to build an external xo for my speakers. To experiment and so I’m not bothering the internal xo too much.
plus some of those caps wouldn’t fit on the internal board if you tried.
they are huge! Lol
but yeah it will be for ease of use and a fun little project.
which reminds me I have to finish a Marshall plexi amp board for a friend. I should do that now as well.
ill let you know of all my findings so to speak. Regardless if the outcome is positive or negative. Will be eye opening. Good learning experience
@AllenB , btw I got that accelerometer from meniscus audio yesterday and couldn’t get it to work with my recording interface for some reason.
that is the levels wouldn’t get high enough. Which is odd. I had the 48v boost on and the gain turned all the way up but nothing.
Gotta call them today and ask
that is the levels wouldn’t get high enough. Which is odd. I had the 48v boost on and the gain turned all the way up but nothing.
Gotta call them today and ask
Attachments
My elder son has built a Plexi 45 kit. He's having some trouble with squegging, but won't let me go near it!
There is none on the site.
i was going to call them and ask.
ill call them here in a bit and tell you
i was going to call them and ask.
ill call them here in a bit and tell you
yeah saw that. I used the phantom power on my recording interface to bring it up as high as possible. But it only got to around -51db
Just got off the phone with them.
They will contact the manufacture and try and get a data sheet.
they didn’t sound too great though. I don’t have faith in meniscus
They will contact the manufacture and try and get a data sheet.
they didn’t sound too great though. I don’t have faith in meniscus
Phantom power then again is only useful to feed the fet buffer and/or polarize the capsule of the device. Yours seems to have a TRS connection, which probably is needed for some form of power supply, most likely +5V on the ring or so. I wouldn’t apply +48V just like that on a device I don’t know.
One final word from me on electrolytic caps, I remeasured some 20 pcs today. All of them 30 years old. And 18 of them still ‘quite‘ on spec. So…..
One final word from me on electrolytic caps, I remeasured some 20 pcs today. All of them 30 years old. And 18 of them still ‘quite‘ on spec. So…..
yeah, for the caps. They don’t drift so easily as some say. I’ve had electrolytics lying around and not even connected and they are fine
hey mark. Any ideas on making that damn accelerometer work?
I really don’t know. It doesn’t look like the B&K or other professional ones. There are a lot of aspects to consider, a fairly important one of them is the sensitivity. Should be pretty high for what you want. Professional ones often have a built-in preamp, that obviously requires some current to operate. Those B&K units require a typical 24 to 30V (had to check that…).
Most recording interfaces do not apply phantom or any voltage to line (TRS) connectors as it could fry the electronics connected.
Assuming the capsule is getting the (roughly) 1.5-5volt (not 48..) volts it needs to operate, it will still need voltage gain similar to a microphone- perhaps 60dB or more, while a line input may only have 10 dB gain available.
This article gives some clear information:
https://sound-au.com/articles/mic-electret.htm
Yeah sounds like it’s not worth the trouble for the money and effort
wonder if a piezo mic would work pretty decently as an accelerometer
wonder if a piezo mic would work pretty decently as an accelerometer
Btw. Did anyone take a look at the measurements I took and posted on here?
Some asked how the MTM layout works with two different drivers.
if you can make anything out.
is the crossover really that low from those measurements or is that just cause of the non ideal way of measuring without an anechoic chamber?
super appreciate it
Some asked how the MTM layout works with two different drivers.
if you can make anything out.
is the crossover really that low from those measurements or is that just cause of the non ideal way of measuring without an anechoic chamber?
super appreciate it