Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

---

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Tweakers' Asylum ] [ Return to Search Results ]

---

[ Alert Moderator ]

---

please clarify

Posted by madisonears (A) on September 20, 2015 at 20:07:57

In Reply to: Marchand XM-44 upgrades posted by jad on September 20, 2015 at 11:31:44:

You have two modules, one with WIMA FKP and the other with Russian teflons? Same xover frequency? If so, do you have a preference? The FKP's are the best cap WIMA sells, made with stacked film and non-magnetic leads. How did you fit huge teflon caps in the same space?

Cap upgrades in line level applications, whether electrolytic or film, are almost always audible and worthwhile. What you experienced with the teflon cap's highs "falling off" after a couple weeks of playing was probably break-in. Most caps will change character, some significantly, after passing signal for a while. Some take a few hours to settle completely, others can take hundreds of hours.

Polystyrene is another alternative to consider for small values typically found in active filters.

The Vishay metal film resistors are decent, but their bulk foils are even better, and the Vishay naked Z-foil is the most neutral resistor available. I've read good and bad things about Holco's. I've never tried them, but I have tried MANY others.

Interesting finding on the opamp/passives combinations. Great that you discovered the right one.

I have learned that it's best to use a variety of differently voiced components throughout a circuit to avoid any one part making its signature too prominent.

Peace,
Tom E
berate is 8 and benign is 9

This post is made possible by the generous support of people like you and our sponsors:

Sonic Craft

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---