Somehow I missed this last night.
Do you think simply building the 0.4x score and fold plans, with a half inch more width would work? Could make for a quick build with less math 😉
Doesn't look too bad at all. Assuming one were to build one up, and used a simple line level crossover, where would you say is a good point to put the crossover point? Looks like somewhere around 12khz would be a good start, with something like an active -12dB line level (trivial to build) and a capacitor feeding the higher frequency driver will set it close to -18dB overall. I've got a pair of GRS piezo k-tubes I'm itching to try out 🙂
Just make it 0.5in wider and 0.75in taller in the bottom chamber to fit the driver bezel. The magnet is huge and will interfere if you do not place the cutout hole high enough. Just run full range and add a super tweeter with say 1uF film cap and pad as needed to balance.
If Mudjester or someone would be so kind as to make a set of score and fold 0.42x plans that would be appreciated. I think this driver has the potential to make the 0.42x a very compact and nice sounding classic with this particular driver.
Hello X,
Busy is good! We do less foolish things when we are busy! 🙂
Still... it's ok to take a breather once a while... no point in harming your health.
So, I've got some numbers for my little driver.
After relaxing and sipping some wine on the couch listening to your nice speakers, if you get bored, I'd like to know if this little driver would be a good candidate for a mini-K. 🙂
No rush.
Take care.
Busy is good! We do less foolish things when we are busy! 🙂
Still... it's ok to take a breather once a while... no point in harming your health.
So, I've got some numbers for my little driver.
After relaxing and sipping some wine on the couch listening to your nice speakers, if you get bored, I'd like to know if this little driver would be a good candidate for a mini-K. 🙂
No rush.
Take care.
Attachments
Hello X,
Busy is good! We do less foolish things when we are busy! 🙂
Still... it's ok to take a breather once a while... no point in harming your health.
So, I've got some numbers for my little driver.
After relaxing and sipping some wine on the couch listening to your nice speakers, if you get bored, I'd like to know if this little driver would be a good candidate for a mini-K. 🙂
No rush.
Take care.
Hi Perceval,
Sure, will take a look at it. If you can put the TS params in this format it will save me some time and activation energy to get started.
Re=7.36ohm
Fs=137Hz
Qts=0.84
Qms=3.07
Qes=1.158
Le=0.265mH
Mms=5.48g
Vas=1.75L
Updating to 0.42 would be easy. I'll try to do that tonight.
However, I may not have time to put together the cut diagrams. I may replace the diagrams with just part dimensions, not fit into 20x30 sheets.
However, I may not have time to put together the cut diagrams. I may replace the diagrams with just part dimensions, not fit into 20x30 sheets.
Ok, here it is as listed:
Re=5.75ohm
Fs=62Hz
Qts=0.51
Qms=2.71
Qes=0.63
Le=0.157mH
Mms=not given by DATS
Vas=6.65L
I don't know how to get Mms. I'll have to look it up.
That would be fine and most appreciated. Putting them into 20x30 sheets is a lot babysitting and I think folks should be able to handle that.
Thanks again!
X
I think Mms comes from fact that I use the added mass method to get Vas. If you use the known volume box method to get Vas, you don’t have it. Having either Vas or MMs is enough I think.
For added mass I use silly putty shaped as donut to fit on dustcap cone interface. I measure mass with digital gram postal scale. Silly putty silicone based and is tacky and leaves no harmful residue on sensitive surfaces. Don’t get it on porous fabrics though it will never come out.
Note that Mudjester’s plans above may need slight modification to make the panel that holds the driver taller and an angle that is more vertical to allow the MCM55-1595 to fit. It has a very large diameter magnet.
We're used to not having stuff shipped to where we live. Welcome to the club. 😛
You can always make use of Aramex Global Shopper or similar service.