Help with crossover capacitors

Hi @dannybad ,
You can try to bypass compression driver filter capacitor with Duelund Cu-Sn 0.01uF bypass capacitor.
I did it in my Altec 604E with vintage oil 4uF capacitor and with Duelund RS main 3.9uF capacitors. I like results in both cases.
Even in parallel with already very good Duelund RS capacitor, bypass capacitor my speakers sounded more vivid, organic, with better tone. Only drawback was it made sound a little bit less focused.
In case of  vintage oil capacitor the difference cause by  Duelund Cu-Sn 0.01uF bypass was even more positive.
Regards,
Alex.

Alex is spot on as I use the .01 Duelund tinned copper cap all the time. Only issue is they are out of your total budget unless you splurge 😊. 

It just possible option.
On the first stage to update the crossover with not expensive and good sounding capacitors.
And if you like result go to the next step of upgrade.
There are a number of options there including use good bypass capacitors.

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Just one caution: how hard do you drive your speakers? The 300R, 12 watt resistor may get hot when used hard, in place of a 15 watt. Have you considered doubling up in parallel? I would be sure to meet or exceed all voltage and power specs, and match values of resistance or capacitance as closely as possible.

Rather than brand name, consider technology when buying caps. Film and foil is notably better than any metallized product. I like tin foil and styrene film, especially from MIT multi cap - pricey, but worth it in spades. Mills is good unless you have deep pockets.

This is backwards

Two 15ohm 12watt resistor in series will give you a 30ohm 24watt.

You want to parallel resistors to increase wattage.

rocknss,

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Just one caution: how hard do you drive your speakers? The 300R, 12 watt resistor may get hot when used hard, in place of a 15 watt. Have you considered doubling up in parallel? I would be sure to meet or exceed all voltage and power specs, and match values of resistance or capacitance as closely as possible.

Rather than brand name, consider technology when buying caps. Film and foil is notably better than any metallized product. I like tin foil and styrene film, especially from MIT multi cap - pricey, but worth it in spades. Mills is good unless you have deep pockets.

This is backwards

Two 15ohm 12watt resistor in series will give you a 30ohm 24watt.

You want to parallel resistors to increase wattage.

You can in series or parallel resistors to increase wattage!

You can parallel two 60ohm 12watt resistors to get the same result.

P= V x I

Two identical resistor in series, each resistor only see half of the voltage.

Two identical resistor in parallel, each resistor only take half of the current.