Main > Main Forum
Inline Volume Control - What Resistance?
myrmidon:
I am using the original PCB's (not MAME) so am subject to the on-board audio amp, and it is wired directly to the standard 8-ohm cabinet speaker.
Therefore having read though the threads it appears that while an l-pad is a few bucks more expensive than a simple pot, it definitely seem the better way to go (certainly cannot and will not cause any harm to the amp on the PCB).
Smeghead:
--- Quote from: WhereEaglesDare on August 29, 2010, 02:57:44 pm ---Did you use the orginal speakers as well or did you put in some better speakers?
--- End quote ---
Cut off the speakers and attached them to my cab speakers.
Good thing is I even have a headphone socket on that board!
Zebidee:
I've never seen an L-pad in all the original arcade cabs I have pulled apart (which is a lot). They all use a simple volume pot.
However, it can't hurt, esp. between PCB amp & speakers. Most cab makers would have been more concerned about cost than good design (another example of this is how many original cabs have unshielded speakers placed near CRT screens, causing magnetic anomalies).
BKahuna:
--- Quote from: Zebidee on August 29, 2010, 09:43:28 pm ---I've done this about a dozen time or more.
You don't need an L-pad.
You don't want to take the volume pot off your amplifier.
Just put a new 10k - 50k pot on the line-out from the PC (ie before the amplifier). This approach will minimise your hassles.
Wire it and mount it like this:
http://scarvell.net/wiki/index.php?title=VOLUME_CONTROL_MOUNTING_AND_WIRING
Enjoy!
--- End quote ---
Maybe I misread the OP's question, but it sounded like he wanted a passive device to put inline between his speaker and amp? That would be an Lpad.
I agree, your idea is better, if he's using a PC soundcard output, or has access to the line level audio signal elsewhere, but that's not what he asked for, and at the time, he hadn't actually said what he was putting it in.
Zebidee:
That's true. One can jump to assumptions based on the idea that this forum mostly being used by people making MAME cabs.
Navigation
[0] Message Index
[*] Previous page
Go to full version