Top resistors

i swapped a couple signal path resistors to the Vishay z-foil in my 45 SET and I am pretty gobsmacked. was like swapping old worn out tubes for a perfect NOS pair. really great resistors for at least signal path position.

What are the best resistors for horn compression driver crossovers?

I built n-1500 crossover for Altec 604E.

DIY Altec N1500A (audioheritage.org)

I use constant resistors instead of potentiometers 36 Ohm and 7.5 Ohm. I also use resistors 1.2 Ohm - 1.8 Ohm for super tweeter crossover.

I tried Duelund Regular and Custom, 12 Watt Mills Black and Brown and 20 year old Dale CW-5-500 5 Watt.

Dales are worst not smooth not transparent.

Both Mills are very clean and transparent but a bit bright and not very natural tone. Mills are best in term of focus.

Duelunds are best. Natural tone and more calm, less ringing vs Mills.

I did more comparison between Duelund Custom resistors and old "black" Mills in Altec crossover. In my case 7.5 Ohm resistor is connected to compression driver.

At first I used 3.9 Ohm Duelund and 3.5 Ohm Mills in series. Then I changed it to single Duelund Custom 7.5 Ohm resistor.

The difference is huge! On first glance, Mills-Duelund combination sounded transparent on simple music. But on complex music sound become congested, messy and unpleasant (the same was happened when I used 6.8 Ohm single Mills resistor before). 
With single Duelund, In beginning, the sound was too forward with highliting upper midrange, but after @zipost suggested me to change direction of resistors everything started sound in spot.  Most  complex music, sounded separated and organic! Duelund also have much more natural, less artificial tone.

I don't understand why most of audiophile call artificial, synthetic, mechanical sound "neutral" ?
So I'm very happy and impressed by Duelund Custom resistor in my system.