Boat Stereo / Amp
I'm adding an AMP to my stereo system, should the POWER/12V wire go to the
SWITCH or should it go directly to the Battery positive? |
Boat Stereo / Amp
On Tue, 12 May 2009 18:18:45 -0400, "Matt"
wrote: I'm adding an AMP to my stereo system, should the POWER/12V wire go to the SWITCH or should it go directly to the Battery positive? Read The Fine Manual that should have come with your amplifier. (and how would we know what SWITCH you are talking about?) -- Peter Bennett, VE7CEI peterbb4 (at) interchange.ubc.ca GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca |
Boat Stereo / Amp
"Matt" wrote in
: I'm adding an AMP to my stereo system, should the POWER/12V wire go to the SWITCH or should it go directly to the Battery positive? How big are its fuses? Twin 30A fuses = 60A tops....pretty much answering your own question...OUCH! BIG WIRE straight to the battery. The amps are all switched on by a very low current control wire you put + 12V to when you want to turn the amps on. Shut down the control voltage, and the amps shut themselves off. No, you can't charge the battery at all drawing 50A from some huge stereo off an outboard motor's 15A charging circuit..... -- ----- Larry You can tell there's very intelligent life in the Universe because none of them have ever tried to contact us..... |
Boat Stereo / Amp
In article , Larry wrote:
"Matt" wrote in : I'm adding an AMP to my stereo system, should the POWER/12V wire go to the SWITCH or should it go directly to the Battery positive? How big are its fuses? Twin 30A fuses = 60A tops....pretty much answering your own question...OUCH! BIG WIRE straight to the battery. The amps are all switched on by a very low current control wire you put + 12V to when you want to turn the amps on. Shut down the control voltage, and the amps shut themselves off. No, you can't charge the battery at all drawing 50A from some huge stereo off an outboard motor's 15A charging circuit..... Thats only for peak power. Normal power is much less. A fuse MUST be installed close to the battery regardless. greg |
Boat Stereo / Amp
The AMP requires a 90A fuse.
I plan on wiring the 12V+ From the AMP (4 gauge) to the COMMON on the switch. I have a 1' 4 gauge power cable with a 90A fues built in. From what I have been reading that is the way to do it, rather than 12V+ from AMP straight to battery Positive. Sound good? "GregS" wrote in message ... In article , Larry wrote: "Matt" wrote in : I'm adding an AMP to my stereo system, should the POWER/12V wire go to the SWITCH or should it go directly to the Battery positive? How big are its fuses? Twin 30A fuses = 60A tops....pretty much answering your own question...OUCH! BIG WIRE straight to the battery. The amps are all switched on by a very low current control wire you put + 12V to when you want to turn the amps on. Shut down the control voltage, and the amps shut themselves off. No, you can't charge the battery at all drawing 50A from some huge stereo off an outboard motor's 15A charging circuit..... Thats only for peak power. Normal power is much less. A fuse MUST be installed close to the battery regardless. greg |
Boat Stereo / Amp
The AMP requires a 90A fuse.
Be sure you have enough alternator capacity, along with batteries, to actually drive that amp. You may find you have neither enough battery capacity, nor an alternator capable of keeping up with it. Factor in the cost of a marinized alternator then. I plan on wiring the 12V+ From the AMP (4 gauge) to the COMMON on the switch. I have a 1' 4 gauge power cable with a 90A fues built in. What you "plan" on wiring should be based on what the manufacturer of that amp (which you haven't mentioned) recommends. It still doesn't sound like you're on the right track. |
Boat Stereo / Amp
What is the rating of the switch you intend to connect this #4 wire to? And what size wire is feeding the switch? If you are referring to the boat's main battery switch, then, yes, the output terminal of the battery switch would be a suitable place to connect the amp power cable. On Sat, 16 May 2009 20:03:40 -0400, "Matt" wrote: The AMP requires a 90A fuse. I plan on wiring the 12V+ From the AMP (4 gauge) to the COMMON on the switch. I have a 1' 4 gauge power cable with a 90A fues built in. From what I have been reading that is the way to do it, rather than 12V+ from AMP straight to battery Positive. Sound good? "GregS" wrote in message ... In article , Larry wrote: "Matt" wrote in : I'm adding an AMP to my stereo system, should the POWER/12V wire go to the SWITCH or should it go directly to the Battery positive? How big are its fuses? Twin 30A fuses = 60A tops....pretty much answering your own question...OUCH! BIG WIRE straight to the battery. The amps are all switched on by a very low current control wire you put + 12V to when you want to turn the amps on. Shut down the control voltage, and the amps shut themselves off. No, you can't charge the battery at all drawing 50A from some huge stereo off an outboard motor's 15A charging circuit..... Thats only for peak power. Normal power is much less. A fuse MUST be installed close to the battery regardless. greg -- Peter Bennett, VE7CEI peterbb4 (at) interchange.ubc.ca GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca |
Boat Stereo / Amp
Yes, I will have to check the alternator capacity..
The manufacturuer recommends 4gague wire for the ground and 12V+ with a 90A/100A fuse inline. "Bill Kearney" wrote in message t... The AMP requires a 90A fuse. Be sure you have enough alternator capacity, along with batteries, to actually drive that amp. You may find you have neither enough battery capacity, nor an alternator capable of keeping up with it. Factor in the cost of a marinized alternator then. I plan on wiring the 12V+ From the AMP (4 gauge) to the COMMON on the switch. I have a 1' 4 gauge power cable with a 90A fues built in. What you "plan" on wiring should be based on what the manufacturer of that amp (which you haven't mentioned) recommends. It still doesn't sound like you're on the right track. |
Boat Stereo / Amp ALTERNATOR SPECS
I beleive this is the alternator i have, what do you think:
Sierra G Alternator 817119A4 Single Groove Pulley. 55 Amp. for a kicker mx700.5 amp... "Bill Kearney" wrote in message t... The AMP requires a 90A fuse. Be sure you have enough alternator capacity, along with batteries, to actually drive that amp. You may find you have neither enough battery capacity, nor an alternator capable of keeping up with it. Factor in the cost of a marinized alternator then. I plan on wiring the 12V+ From the AMP (4 gauge) to the COMMON on the switch. I have a 1' 4 gauge power cable with a 90A fues built in. What you "plan" on wiring should be based on what the manufacturer of that amp (which you haven't mentioned) recommends. It still doesn't sound like you're on the right track. |
Boat Stereo / Amp
In article , "Matt" wrote:
The AMP requires a 90A fuse. I plan on wiring the 12V+ From the AMP (4 gauge) to the COMMON on the switch. I have a 1' 4 gauge power cable with a 90A fues built in. Switches are not normally used, but there is a small drain on the battery, sometimes enough to be bad if the battery sits for weeks. You also mention switch, then also talk about being switched from control. if you need more clarity you could read the car audio FAQ, or even ask questions to rec.audio.car greg From what I have been reading that is the way to do it, rather than 12V+ from AMP straight to battery Positive. Sound good? "GregS" wrote in message ... In article , Larry wrote: "Matt" wrote in : I'm adding an AMP to my stereo system, should the POWER/12V wire go to the SWITCH or should it go directly to the Battery positive? How big are its fuses? Twin 30A fuses = 60A tops....pretty much answering your own question...OUCH! BIG WIRE straight to the battery. The amps are all switched on by a very low current control wire you put + 12V to when you want to turn the amps on. Shut down the control voltage, and the amps shut themselves off. No, you can't charge the battery at all drawing 50A from some huge stereo off an outboard motor's 15A charging circuit..... Thats only for peak power. Normal power is much less. A fuse MUST be installed close to the battery regardless. greg |
Boat Stereo / Amp
Thanks greg. My Alternator is 55amp, I believe the will be sufficent as you
mentioned 'peak power' so the amp (kicker 700.5) should be able to charge while running Well the switch i'm using is the standar PERKO 1-2-Both-Off switch. So the 4 gauge 12V+ from the amp will go to that instead of the 12V+ on the battery. Or since the 12v power lead shuts the amp off entirely then maybe if i wire it straight to the battery it will shut down completely, i just wanted to make sure that is the case, cause if there is a chance by wiring it straight to the battery it will still draw power then i can't do it. Only prob. with posting in the car audio forum is that i have added electronics w/ the boat and most people really don't address my specific concerns. "GregS" wrote in message ... In article , "Matt" wrote: The AMP requires a 90A fuse. I plan on wiring the 12V+ From the AMP (4 gauge) to the COMMON on the switch. I have a 1' 4 gauge power cable with a 90A fues built in. Switches are not normally used, but there is a small drain on the battery, sometimes enough to be bad if the battery sits for weeks. You also mention switch, then also talk about being switched from control. if you need more clarity you could read the car audio FAQ, or even ask questions to rec.audio.car greg From what I have been reading that is the way to do it, rather than 12V+ from AMP straight to battery Positive. Sound good? "GregS" wrote in message ... In article , Larry wrote: "Matt" wrote in : I'm adding an AMP to my stereo system, should the POWER/12V wire go to the SWITCH or should it go directly to the Battery positive? How big are its fuses? Twin 30A fuses = 60A tops....pretty much answering your own question...OUCH! BIG WIRE straight to the battery. The amps are all switched on by a very low current control wire you put + 12V to when you want to turn the amps on. Shut down the control voltage, and the amps shut themselves off. No, you can't charge the battery at all drawing 50A from some huge stereo off an outboard motor's 15A charging circuit..... Thats only for peak power. Normal power is much less. A fuse MUST be installed close to the battery regardless. greg |
Boat Stereo / Amp
In article , "Matt" wrote:
Thanks greg. My Alternator is 55amp, I believe the will be sufficent as you mentioned 'peak power' so the amp (kicker 700.5) should be able to charge while running Well the switch i'm using is the standar PERKO 1-2-Both-Off switch. So the 4 gauge 12V+ from the amp will go to that instead of the 12V+ on the battery. Or since the 12v power lead shuts the amp off entirely then maybe if i wire it straight to the battery it will shut down completely, i just wanted to make sure that is the case, cause if there is a chance by wiring it straight to the battery it will still draw power then i can't do it. Only prob. with posting in the car audio forum is that i have added electronics w/ the boat and most people really don't address my specific concerns. USENET is not a forum as such. The only thing different in boats is the ground. Just talk about wiring, not WHERE. One trouble with cars, the alternator does not always get into the max amp range until you get over 2K RPM. In boats one tends to get much higher than that just to plane. So boats have a powering advantage. On my old car I had an amp that drew about .05 amp with control power off. it would drain the battery after sitting a month. I thought about installing a switch or relay but never did. greg "GregS" wrote in message ... In article , "Matt" wrote: The AMP requires a 90A fuse. I plan on wiring the 12V+ From the AMP (4 gauge) to the COMMON on the switch. I have a 1' 4 gauge power cable with a 90A fues built in. Switches are not normally used, but there is a small drain on the battery, sometimes enough to be bad if the battery sits for weeks. You also mention switch, then also talk about being switched from control. if you need more clarity you could read the car audio FAQ, or even ask questions to rec.audio.car greg From what I have been reading that is the way to do it, rather than 12V+ from AMP straight to battery Positive. Sound good? "GregS" wrote in message .. . In article , Larry wrote: "Matt" wrote in : I'm adding an AMP to my stereo system, should the POWER/12V wire go to the SWITCH or should it go directly to the Battery positive? How big are its fuses? Twin 30A fuses = 60A tops....pretty much answering your own question...OUCH! BIG WIRE straight to the battery. The amps are all switched on by a very low current control wire you put + 12V to when you want to turn the amps on. Shut down the control voltage, and the amps shut themselves off. No, you can't charge the battery at all drawing 50A from some huge stereo off an outboard motor's 15A charging circuit..... Thats only for peak power. Normal power is much less. A fuse MUST be installed close to the battery regardless. greg |
Boat Stereo / Amp
On Mon, 18 May 2009 09:21:20 -0400, "Matt"
wrote: Thanks greg. My Alternator is 55amp, I believe the will be sufficent as you mentioned 'peak power' so the amp (kicker 700.5) should be able to charge while running Well the switch i'm using is the standar PERKO 1-2-Both-Off switch. So the 4 gauge 12V+ from the amp will go to that instead of the 12V+ on the battery. Or since the 12v power lead shuts the amp off entirely then maybe if i wire it straight to the battery it will shut down completely, i just wanted to make sure that is the case, cause if there is a chance by wiring it straight to the battery it will still draw power then i can't do it. You should connect the amp's power cable to the load side of the Perko battery switch. The only thing connected directly to the boat's battery + terminal should be the input terminal of the Perko switch (and possibly a bilge pump). -- Peter Bennett, VE7CEI peterbb4 (at) interchange.ubc.ca GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca |
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