Speaker question
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
||||||||||||||||||||||
|
Posted by on February 12, 2008, 5:02 pm
Please log in for more thread options the speaker connector (for the internal PC speaker). If I wanted to use this connector as an audio output (going to my powered speakers), will it require a resistor or something to reduce the signal? Bryan | ||||||||||||||||||||||
|
Posted by kony on February 12, 2008, 7:29 pm
Please log in for more thread options wrote: To clarify, you do mean the beeper circuit not the sound card audio output, yes? If it were the sound card output, no resistor. If it's the beeper output, wiring in a log, audio, potentiometer instead of a resistor would give much better control over the signal level, maybe choosing a 10K log POT as it's a fairly common value, I think 50K or more may be too high especially if these speakers would also have another audio feed that would tend to be at a higher level. However, in many powered speakers you already have this, a log pot at the signal input as the volume knob, so you could go ahead and try without an additional resistor or POT, with the volume knob turned down as low as it will go then progressively increasing volume to find whether it gives you an acceptible level of volume control or not. I would guess that ideally you will also need about 1K resistor in series but I may be wrong and don't know what volume level you need for this unknown project, nor how powerful your powered speakers are. The volume is the issue, it's not a situation where you could put too much current through the beeper circuit connecting it to amp'd speakers, as that would cause less current through the circuit than if directly driving an un-amp'd beeper speaker. | ||||||||||||||||||||||
|
Posted by on February 13, 2008, 1:00 am
Please log in for more thread options Thanks for the info. Very informative. I think my main concern is
"overdrive" (or distortion) from the audio signal being too much. I suppose the only way to really know for sure would be to wire it up and see what happens. By the way, this isn't the "beep" speaker, it's the actual speaker connector for sound. Bryan | ||||||||||||||||||||||
|
Posted by kony on February 13, 2008, 3:31 am
Please log in for more thread options On Tue, 12 Feb 2008 22:00:24 -0800 (PST), Totalrod2@aol.com
wrote: >Thanks for the info. Very informative. I think my main concern is
>"overdrive" (or distortion) from the audio signal being too much. I >suppose the only way to really know for sure would be to wire it up >and see what happens. By the way, this isn't the "beep" speaker, it's >the actual speaker connector for sound. >Bryan What do you mean by actual speaker connection for sound? We need to know exactly how it's hooked up, typically a motherboard speaker output does nothing but beep, unless you have a special driver installed. If this board is one of those rarer OEM boards with an integral amp chip to drive speakers, that is not of much importance to drive an amp'd speaker set except that the amp stage on the board degrades sound slightly compared to taking an un-amp'd output if one is available from the sound card or chip. The matter of overdrive is whether the amp-integral speakers are set at a gain too high for their acceptible output based on the chip and input voltage level. We just don't have enough info to make a conclusion so the easier way is just to try it as-is and then try a multi-KOhm POT if that is too high a signal level. | ||||||||||||||||||||||
|
Posted by on February 13, 2008, 4:20 pm
Please log in for more thread options You're right about the "PC" speaker connector. I scrutinized my
installation manual and it appears it's just for the buzzer, not audio. Sorry, I'm fairly new at this. However ,there is another connector on my motherboard which will probably be more suitable as an output. "F-AUDIO (Front Audio Connector), which is described as supporting AC97 front panel audio module. "If you wish to use the front audio function, connect the front panel audio module to this connector". Will this work as a "line out" to powered speakers? There are 3 pins: Line Out (R), Line Out (L), and GND. I just want to make sure. Please let me know. Bryan | ||||||||||||||||||||||
| Similar Threads | Posted |
| Speaker question | February 12, 2008, 5:02 pm |
| ticking on speaker | November 2, 2006, 2:02 am |
| Keyboard/Monitor/Mouse AND Speaker Switch??? | June 10, 2005, 6:50 pm |
| Speaker Connector on Intel D945PSN Motherboard ? | March 1, 2006, 11:23 am |
| USB Question | February 19, 2005, 4:27 am |
| 64 bit question | August 28, 2005, 8:33 pm |
| VGA question! | April 3, 2006, 10:58 am |
| Question | September 29, 2006, 6:04 am |
| question on ATX P.S. | June 24, 2005, 1:21 am |
| Question re. UPS - APC 650 | July 15, 2008, 7:04 pm |
| PCIExpress and RAM question | February 28, 2005, 5:24 pm |
| Mem Question/Kony | April 8, 2005, 11:31 pm |
| IDE/SATA Question | July 18, 2005, 4:37 pm |
| CD drive question | August 1, 2005, 7:00 pm |
| sata question | August 17, 2005, 3:16 pm |
>the speaker connector (for the internal PC speaker). If I wanted to
>use this connector as an audio output (going to my powered speakers),
>will it require a resistor or something to reduce the signal?
>Bryan