They are custom made for Emerald Physics by a major OEM that also makes JBL professional drivers, so these are not publicly available drivers and no “part numbers” available. I am lucky to have access to a lot of OEM gear to try out and design stuff with.
On the bench tonight is debugging an I2C device connected to an ESP32 MCU. These MCUs are amazingly powerful. I really like my little handheld scope - here it’s looking at the clock and data I2C bus to make sure the device is alive.
Neat device! I have an ancient Hitachi CRT scope that can use an upgrade. Requires way too much bench real estate. This looks like a nice option for regaining that space.
Yep they're quite good, I have a couple of them bought before rocketing prices. Very powerful indeed. My boards probably need a separate PSU though, because USB power doesn't seem enough to power them or something like that.
On the bench tonight is a minor upgrade to the XSD crossovers. No more electrolytic caps. I am using a big fat double 600V MKP to reach triple digit uF’s. 🙂
Subjectively, the bass is snappier and more resolved.
Subjectively, the bass is snappier and more resolved.
For all folks who are doing SMT/SMD work. If you plan on doing anything substantial (more than 50 components) or very small pads hidden underneath, a handheld precision paste dispenser is very handy. I have this and it makes all the difference:
https://www.jbctools.com/dpm-a-solder-paste-dispenser-product-1709.html
The 21ga (blue) plastic tapered nozzles work very well too as they let you apply pressure to pinch off the the little bead of paste.
Glue Henna Dispensing Needle Tips... https://www.amazon.com/dp/B07GLJZWL8?ref=ppx_pop_mob_ap_share
Years ago, I used to make the Pocket Class A amps all the time. I think I made almost 80 of them by hand. Here was one of them. They are too time consuming to make so I only sell boards now.
https://www.jbctools.com/dpm-a-solder-paste-dispenser-product-1709.html
The 21ga (blue) plastic tapered nozzles work very well too as they let you apply pressure to pinch off the the little bead of paste.
Glue Henna Dispensing Needle Tips... https://www.amazon.com/dp/B07GLJZWL8?ref=ppx_pop_mob_ap_share
Years ago, I used to make the Pocket Class A amps all the time. I think I made almost 80 of them by hand. Here was one of them. They are too time consuming to make so I only sell boards now.
Nice tip (pun intended) on the solder paste dispenser. Hard to find 21 ga tips, so if buying will probably go a bit larger with 20 ga tips rather than smaller with 22 ga tips.
Should be easy to produce masks nowadays, but does anybody know the cost at one of the cheap PCB fabs?
Thanks.
For small boards, it's definitely easier and faster to do it by hand. I have some supplies to attempt homebrew masks, but have yet to try it.
For small boards, it's definitely easier and faster to do it by hand. I have some supplies to attempt homebrew masks, but have yet to try it.
On the bench is an SMSL SU-9n DAC. It’s got balanced and single ended outputs, with ESS9038 DAC chips. I needed a top ranked DAC with balanced output to test my new amps that have balanced input. It’s a very nicely made DAC and sounds superb.
The new pre-production chassis for the XSA-Labs / Vera-Fi Audio model A25 Class A amp arrived. It’s a beautiful chassis. 23lbs of custom CNC aluminum satin bead blasted and black anodized. 17in wide x 12in deep x 6.25in tall not including feet.
