12v bike rig - Advice needed! |
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slaz
Old Croc Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713 |
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Hmm .... well I can see how that might well be a problem with a lead-acid battery in less-than-optimal condition and/or near the end of its discharge cycle - and ragging the amplifier hard. I try (where possible/viable) to power ancillary bits of kit from their own batteries. We'd need to know the current consumption of the DSP .... I can see it would use a few watts - maybe somehting like 0.5A or so at a guess - so to play all day you might want 12V 5Ah or so. My 7-band car EQ (yeah, I know ... doesn'treally seem to degrade the signal though) uses about 200mA. I've always used a separate battery for that .... but its easy when (like me) you've built up a stash of various batteries over the years. BTW - it also neatly side-steps posible ground-loop issues. Edited by slaz - 07 April 2021 at 5:29pm |
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REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
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Jack1991
Registered User Joined: 05 February 2020 Location: Bristol Status: Offline Points: 491 |
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Cool cheers Slaz, ground loop issues is another thing i have not heard of before. Ill have a look into that. I have just got a t.racks 12v dsp so have just been reading up trying to make sure im powering it correctly off a battery. Hoping the info helps CFLsound too
Edited by Jack1991 - 07 April 2021 at 5:51pm |
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bfbs
New Member Joined: 16 February 2013 Location: Germany Status: Offline Points: 3 |
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Moin.
I habe your project. 1 mbh118 / 1/2 EVMTL1 with Rcf L18S801 Carpower wanted 2x600 bridges. For 1kw @4ohm The Sub has 8ohm so only 500w go into the Sub. A swtiching Inverter for 230v pure sin1kw Any aktive top for the rest. Two agm with 95ah And you will have more than 6 hours Fun. I use this in two bikes paired with a guitar bug. Stereo for chritical mass... Runs in north oft germany. The weight is ca 120kg for the PA. https://werkstatt-lastenrad.de/index.php?title=Datei:20180525_210347.jpg I have build the Bike by my selve because there is no Seller of Cargobikes for this Load Volumen by weight. Bud You have a Trailer thats easyer to handle.
Edited by bfbs - 07 May 2021 at 10:34pm |
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bfbs
New Member Joined: 16 February 2013 Location: Germany Status: Offline Points: 3 |
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Ground Loop....
It is a crazy think. On my Bike i have one audiosignal on 12V for the Sub Amp, one audiosignal for a littel mixing desk on 230v with a real transformer (galvanically isolated) ant a Opera 402D in an unknown Status. I mußt Isolate the Amp for the Sup to get no 50hz Noize.
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