Thursday, 19 November 2009
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I have an ABII and I was wondering, what does the Active/Passive switch do to battery usage? I know of other basses wherein switching to passive does not disconnect the battery, which will continue to drain as long as there is a 1/4" plug in the output jack. Are Dingwalls different or is unplugging the only way to prevent battery drainage?
12 years ago
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#14998
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You would need to unplug to save the battery. As far as I know, the reason is the loud popping noise when any preamp powers on. Active basses use stereo output jacks. Tip is the same as always, while the ring is ground and the sleeve completes the circuit for the batteries. When a cord is plugged in, the circuit is complete and the batteries are being used.
12 years ago
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#15011
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Some active/passive-basses disconnect the battery entirely when they are switched to passive mode, and some do not. Most of the time, leaving the cord attached will drain the battery to some extent. It will drain more if the bass is left in active mode than in passive. I had a Sadowsky once, that you could play in passive mode with no battery in the cavity at all (this is an unusual feature, I believe). This bass I could leave with the cord plugged in (switched to passive), and no battery power would drain. And NateC: I do not think you need stereo jacks to use active basses (if that was what you were saying). Stereo jacks can be used for phantom powering purposes, but are not needed for normal active operation. And my preamps do not "pop" every time I switch them on/off. Maybe this depends on the quality of the cirquits?
12 years ago
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#15012
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[quote="Beepo":meo196cp]And NateC: I do not think you need stereo jacks to use active basses (if that was what you were saying). Stereo jacks can be used for phantom powering purposes, but are not needed for normal active operation.[/quote:meo196cp] I could be wrong but IME all the active basses I've had were set up with a stereo jack as Nate said and as I understood the wiring it was for exactly the purpose he mentioned (opening and closing the active circuit). [quote="Beepo":meo196cp]And my preamps do not "pop" every time I switch them on/off. Maybe this depends on the quality of the cirquits?[/quote:meo196cp] That's because your preamps have a good buffer built into them. There's still a pop...it just doean't make it to the output.
12 years ago
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#15013
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Okay, I guess I was wrong then. :oops: Or, I just wanted to say that you do not need a stereo cord to use the active cirquit. At least, mine are mono, and they work fine.
12 years ago
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#15014
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[quote="Beepo":2nuj9gzd]Okay, I guess I was wrong then. :oops: Or, I just wanted to say that you do not need a stereo cord to use the active cirquit. At least, mine are mono, and they work fine.[/quote:2nuj9gzd] Correct. You use a mono cable but the bass has a stereo jack to complete the circuit rather than to send another signal.
12 years ago
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#15019
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Hmm, that's something I didn't know. What would happen if you used a stereo cord in the guitar?
12 years ago
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#15020
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[quote="TheGrandEnigma":j77g1anz]Hmm, that's something I didn't know. What would happen if you used a stereo cord in the guitar?[/quote:j77g1anz] I've never tried it but the vast majority of bass amps aren't set up to accept a stereo signal so I'd guess that it would either have no effect or it would cause a buzz/hum. I would guess it wouldn't cause a problem unless you plugged it into something that was supposed to take a stereo signal.
12 years ago
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#15037
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Yeah, what he said...
12 years ago
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#15041
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[quote="TwoPort":14smn88i]It's not a stereo output from either the guitar or bass. The inputs on amps are mono. Alembic and maybe a few others actually did separate the pickups and had a stereo output (1/4" TRS) and they also had a funny 9 pin connector that ran to their power box and separated the two pickup outputs as I used one years ago. You could eq each pickup separately, etc. But you had to separate the signals and plug them into separate inputs if you were going to do that.[/quote:14smn88i] Read my post again. It's not a stereo signal or cable...but it's a stereo jack. The 3rd contact disconnects the battery when the cable is unplugged.
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