Bottlehead Forum Welcome! Need support, you got it. Or share you ideas and experiences.

---

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Bottlehead Forum ]

---

[ Alert Moderator ]

---

RE: How to use the 4 ohm tap in the SEX amp.

Posted by Paul Joppa (P) on June 3, 2007 at 13:46:45

In Reply to: How to use the 4 ohm tap in the SEX amp. posted by TerryG on June 3, 2007 at 13:10:30:

Strip the gray (4 ohm) wire 1/4 inch. Unsolder the white (8 ohm) wire from T5U, and replace it with the gray (4-ohm) wire. Be sure to leave the black wire from the primary side in T5U. Solder. Insulate the end of the white (8 ohm) wire and bundle it just like the gray wire used to be. You can clip the exposed wire portion, or tape it with electrician's tape, or slip a bit of heat-shrink over it.

Do the same on the other side, at T25U.

This will reduce the headphone output 3dB, but is very easy and reliable. It is in theory possible to use the 8 ohm tap for the headphones to retain the full voltage, while using the 4 ohm tap on the speakers, but the re-wiring gets pretty complicated, and most 'phones are too sensitive anyhow.

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 © 2025, Audio Asylum, all rights reserved ]

---

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

---