anyone willing to take a look at - PD.122

[Zen Mod]

I'm interested - is this driver adequate for any sort of QW box ?

it's Precision devices PD.122

please - with cherry on top ......

BR and closed box aren't useful at all

 

[kelticwizard]

I don't have Martin King's software at the moment but you might be able to do something with a Mass Loaded Transmission Line. Somebody else will have to help you, though.

Is this for PA work?

 

[Zen Mod]

I don't have Martin King's software at the moment but you might be able to do something with a Mass Loaded Transmission Line. Somebody else will have to help you, though.

Is this for PA work?

nope - it's intended for home , along with Econo wave guide ( from Audiokarma ) .

I don't have Martin's routines ...... not messing lately with anything except small boxes , for which usual software is completely adequate .

I'll be grateful if anyone put these few numbers in MJK's sheets ....

 

[kelticwizard]

How sensitive are these models? Is sensitivity a big issue with you?

You can raise the Qts of the drivers to something more usable in a ported or closed box if you put a resistor in series with the PD. But it will lower the SPL of the driver somewhat. I can calculate the resistor and sensitivity loss for you, if you like.

It's a nice option to have if the Mass Loaded Transmission Line doesn't work out. I'm sure somebody will be by here to help you with that, though.

 

[Zen Mod]

tnx for offer ;
anyway - they aren't purchased yet ..... they are just few of contenders for EconoWave spks we are willing to make for my close friend ;

I have MJK sheets , from era when they are free for download , but I don't have enough routine to use them without plenty of time involved.

anyway - I'm pretty often in situation to invest some time and effort , helping ppl there in Pass and SS forum ;

dunno what's with some residents here ...... maybe I'm not nice looking enough