| Title: | You get surface noise in real life too |
| Notice: | Let's be conformist |
| Moderator: | GOVT02::BARKER |
| Created: | Thu Jul 28 1988 |
| Last Modified: | Mon Jun 02 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 550 |
| Total number of notes: | 3847 |
Can a standard pair of headphones be driven with a line level signal? I
am contemplating compensating for my amp's lack of headphone
socketry by building some sort of passive convertor to connect to a
spare tape loop's output. Ideally, this would simply consist of a
volume pot and headphone socket, and phono leads to connect to the tape
loop. Will this work, or am I being a bit too optimistic?
Steve
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 503.1 | DANGER::SWARD | Common sense is not that common | Mon Dec 05 1994 16:27 | 6 | |
No it would not work. There line level signal is way to low but
you could drive them from the speaker output. But you have to be VERY
careful about the volume level....
Peter
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| 503.2 | CAPNET::PSM044::wclark | Mon Dec 05 1994 18:19 | 15 | ||
Actually some preamps can drive the high impedance (500-2000 ohm) phones. I use a pair of Sony open ear type phones (the kind usually sold as replacements for Walkman devices) at my bench for CD players and preamps to confirm a problem or fix. Low impedance phones (8-50 ohms) are probably a mistake however because of the current demands. I wouldnt suggest trying to use a tape loop output and series volume control to do this. First of all, the volume control will need to be a small value fairly high wattage rated unit to work at all (to act as a passive attenuator for a load in the 500-2000 ohm range you would want a pot in the 50-200 ohm range or even smaller) and this may well not be good for your sources as a load impedance (or the buffer in the preamp if buffered). Walt | |||||