More Model 19 questions

[amandarae]

Thanks Zilch!

[les winter]

Thanks Zilch.

I built the 19Z's and like them. I'm adjusting them now. Do you know if anyone came up with suggested settings in ohms for the l-pads?

If I settle on using the 19Z I will rebuild with oil-filled motor run caps. I used Bennics and other stuff I had on hand for this go around.

Nice design Z.

regards
les

[ZilchLab]

The optimum settings vary with driver/horn/woofer combination. For any particular one, it is possible to determine the optimum settings via system response measurements, measure the resistances of the control elements out of the circuit, and substitute the equivalent fixed resistances in lieu of the L-pads. Key to Z19 is its versatility in providing the requisite HF comp and attenuation for a variety of system component compilations including the Altec standards as well as considerably beyond them....

[DaveCan]

Is there a plans section anywhere for a Z19 ,with recommended components and all that stuff ,that's easy for a basic diy'er to accomplish ? Like a step by step intro etc?

[ZilchLab]

Is there a plans section anywhere for a Z19 ,with recommended components and all that stuff ,that's easy for a basic diy'er to accomplish ? Like a step by step intro etc?

Follow the link in Post #7 of this thread. There's a layout pic, schematic, and parts list provided....

[les winter]

Are the level controls on the Model 19 pots or L-pads used as pots? Anyone know?

thanks
Les

[amandarae]

Hi Les,

For the 8 ohms, you can use 8 ohm pots (two of the three legs) with a proper rating. For the 32 ohms, it is easier to get an L pad and use the 32 ohm leg(terminal 1 and 2) than finding an appropriate 32 ohm potentiometer.

ERSE - L-Pad 8 ohm 15 watts per channel. You might want to check this site also https://www.madisound.com/store/index.php?cPath=404_83

I use Fostex R80B for my N501-8A clone and the Yung LP50 for my 1201.

abe