MG-Head Modify to OTL - very simple..
Hi ! I had a Experiement on MG_Head of modify it to become a Choke Load OTL Headphone amplifiers. It become more bass , more open , better sound stage. It is very easy :
Just remove the nfb loop (R5,C3 , R6,C4) and connect a 100/160V Capacitor to Plate of VB2 and VB3 (6BQ5) . It can drive Headphone 100 Ohm or over. You can keep the Transformers couple function by add a Headphone jack for OTL out or use 1 of Headphone jack for OTL and 1 for Transformer out. (It had 3.5mm Jack and 1/4" Jack).
The original high/low impedance switch can use for nfb control. (Connect or disconnect).
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Topic - Modify MG-Head to Choke Load OTL headphone amps - Joseph Lau 21:06:11 09/24/01 (2)
- Re: Modify MG-Head to Choke Load OTL headphone amps - paullam 05:53:37 09/25/01 (1)
- Re: Modify MG-Head to Choke Load OTL headphone amps - Joseph Lau 09:13:08 09/25/01 (0)
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