These two drivers are not often used by DIY community so I decided to share some details and experiences.
I will start with Punktkilde, this 8" driver models well in 30-40 BR alignment. All looked good in the datasheet, low Le suggested this driver got good features, and the price was ok. I was surprised holding the drivers in my hands and seeing cone edge treatment, this was not visible in product photos. Basket looks identical to WF223BD, surround material is foamed rubber, similar to Seas or Dayton RS midwoofers. Cone material and the collor reminds me WF182BD09. Overall the build quality is great and I like neutral look of this driver so it easy to combine it with other drivers, in my case 12MU.
18W/8542-10 looks great as well, cone edge treatment is clearly visible, and all measurements I have seen (not much info is generally available for this driver) looked perfect. Whole rear side of the cone is treated with partially sticky lacquer. All of this promise excellent midrange qualities.
I plan to make the measurements in coming days-weeks.
I will start with Punktkilde, this 8" driver models well in 30-40 BR alignment. All looked good in the datasheet, low Le suggested this driver got good features, and the price was ok. I was surprised holding the drivers in my hands and seeing cone edge treatment, this was not visible in product photos. Basket looks identical to WF223BD, surround material is foamed rubber, similar to Seas or Dayton RS midwoofers. Cone material and the collor reminds me WF182BD09. Overall the build quality is great and I like neutral look of this driver so it easy to combine it with other drivers, in my case 12MU.
18W/8542-10 looks great as well, cone edge treatment is clearly visible, and all measurements I have seen (not much info is generally available for this driver) looked perfect. Whole rear side of the cone is treated with partially sticky lacquer. All of this promise excellent midrange qualities.
I plan to make the measurements in coming days-weeks.
Attachments
Thank you...
Redcat drivers look quite similar, it seems it all falls from the same production line. But this punktkilde looks to be more refined and well balanced without obvious issues that would somehow limit its usability.
I plan to do TS measurement, and likely quick 2way just to hear it and get the impression.
Redcat drivers look quite similar, it seems it all falls from the same production line. But this punktkilde looks to be more refined and well balanced without obvious issues that would somehow limit its usability.
I plan to do TS measurement, and likely quick 2way just to hear it and get the impression.
18W/8542-10 measurements (SPL cal, referenced to 1m, 2.83V):
NF - this is very nice, no signs of any issues in the passband up to ~3k
FR 0-90deg - very consistent off axis responses, low directivity. The shape of the response is given by very narrow cabinet which shifts the bafflestep closer to 1k.
NF - this is very nice, no signs of any issues in the passband up to ~3k
FR 0-90deg - very consistent off axis responses, low directivity. The shape of the response is given by very narrow cabinet which shifts the bafflestep closer to 1k.
Attachments
Only in the cabinet, not well filled with damping material, so there are two small wrinkles. I will remeasure free air in a weekend.
Also will try to measure FR in another cabinet, with little bit wider baffle. It should linearize the response.
Also will try to measure FR in another cabinet, with little bit wider baffle. It should linearize the response.
@DaveFred so far no progress. Basic concept is clear, ~35l br, 4-5inch migrange, floorstanding, tilted baffle, lr2 filters.
Tweeter will be wavecor tw022wa09.
Midrange, I would like to try wavecorBD, or Kartesian.
I am waiting for the carpenter, he is curently busy with other two projects.
I am even considering this punktkilde 8542-10 for migrange, and waveguided tweeter as alternative project.
Tweeter will be wavecor tw022wa09.
Midrange, I would like to try wavecorBD, or Kartesian.
I am waiting for the carpenter, he is curently busy with other two projects.
I am even considering this punktkilde 8542-10 for migrange, and waveguided tweeter as alternative project.
Ok so finally some listening experience with 8542-10. This weekend I measured, modelled and wired the crossover and give it the listening.
As I had cabinets around, with 104mm opening for the tweeter, I decided to try T34A, based on the experience with 9800 which I liked a lot.
As always it took first hour for drivers to burn in, though basic character was already obvious. Initially I started with whole area >3kHz lower by 1dB compared to v5 sixpack, but this sounded little dark and bass heavy. So I lifted the area by 1dB. This already started to sound very good.
Initially wide directivity of T34A was a concern with regard to baffle edges and diffractions. It is clear T34A would deserve better optimized baffle, but it is not terrible either.
As I had cabinets around, with 104mm opening for the tweeter, I decided to try T34A, based on the experience with 9800 which I liked a lot.
As always it took first hour for drivers to burn in, though basic character was already obvious. Initially I started with whole area >3kHz lower by 1dB compared to v5 sixpack, but this sounded little dark and bass heavy. So I lifted the area by 1dB. This already started to sound very good.
Initially wide directivity of T34A was a concern with regard to baffle edges and diffractions. It is clear T34A would deserve better optimized baffle, but it is not terrible either.
