Arzela
500+ Head-Fier
- Joined
- Jan 20, 2003
- Posts
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My Gilmore balanced dynamic is almost finished.
It's actually a preamp, with crossfeed, 5 inputs, a tape loop, and four outputs. A tape loop output is provided on the front (one of the mini jacks). There is a balanced output on the front (the headphone jacks)
and one on the back. Finally, a single ended output is available either on the back,
or via (after some more work) the left headphone jack.
An eight pole rotary switch deals with the various output
options. Four pole switches are used to select input to the
amp and input to the tape loop.
The toggle switches in the middle are to set the crossfeed on/off and adjust its level.
The case was custom made by Par Metals.
Here are the innards:
The above is the, obscured, crossfeed board. The unpopulated
positions were for DC blocking caps that
were to be used when the output was set to single ended;
however, I am going to set up the 8 pole rotary switch to modify the servo
appropriately when the output is changed between single ended and balanced. The pot is an Alps Black Beauty.
I would like to thank the Head-Fi community for the invaluable help you've
given me over the course of the past few months. I could not have built this otherwise.
And, by the way, the amp sounds splendid
It's actually a preamp, with crossfeed, 5 inputs, a tape loop, and four outputs. A tape loop output is provided on the front (one of the mini jacks). There is a balanced output on the front (the headphone jacks)
and one on the back. Finally, a single ended output is available either on the back,
or via (after some more work) the left headphone jack.
An eight pole rotary switch deals with the various output
options. Four pole switches are used to select input to the
amp and input to the tape loop.
The toggle switches in the middle are to set the crossfeed on/off and adjust its level.
The case was custom made by Par Metals.
Here are the innards:
The above is the, obscured, crossfeed board. The unpopulated
positions were for DC blocking caps that
were to be used when the output was set to single ended;
however, I am going to set up the 8 pole rotary switch to modify the servo
appropriately when the output is changed between single ended and balanced. The pot is an Alps Black Beauty.
I would like to thank the Head-Fi community for the invaluable help you've
given me over the course of the past few months. I could not have built this otherwise.
And, by the way, the amp sounds splendid