When running a DC transformer to test car audio at 12V is it different to
what comes out of the battery, I have a 12V power supply at 1 Amp. Would it
be possible to use this to run an amp and sub?
Thankyou

1 amp would have trouble running a head unit, let alone an amplifier.

"PoNDeR" wrote in message
u...
When running a DC transformer to test car audio at 12V is it different to
what comes out of the battery, I have a 12V power supply at 1 Amp. Would
it
be possible to use this to run an amp and sub?
Thankyou

I have a 12v-15v 35amp power supply with a 37amp surge and that goes into
overload protection when powering up big amplifiers while the capacitors are
charging up.


In article , "PoNDeR"
wrote:
When running a DC transformer to test car audio at 12V is it different to
what comes out of the battery, I have a 12V power supply at 1 Amp. Would it
be possible to use this to run an amp and sub?
Thankyou

So how many amps would i need to run the amplifier?
Thanks



"Mark Zarella" wrote in message
...
1 amp would have trouble running a head unit, let alone an amplifier.

"PoNDeR" wrote in message
u...
When running a DC transformer to test car audio at 12V is it different
to
what comes out of the battery, I have a 12V power supply at 1 Amp. Would
it
be possible to use this to run an amp and sub?
Thankyou

So how many amps would i need to run the amplifier?
Thanks

Depends on the amplifier. But I can tell you right now that it's cheaper to
buy a good home amplifier than it is to buy a power supply for the car amp.
You're talking minimum $150, probably closer to $250. Even more if the amp
is somewhat large.




"Mark Zarella" wrote in message
...
1 amp would have trouble running a head unit, let alone an amplifier.

"PoNDeR" wrote in message
u...
When running a DC transformer to test car audio at 12V is it
different
to
what comes out of the battery, I have a 12V power supply at 1 Amp.
Would
it
be possible to use this to run an amp and sub?
Thankyou

Nah well i wasn't planning on using it for home just testing it before i put
it in the car, or seeing if there was a way i could use the power supply i
had

But thanks for your help



"Mark Zarella" wrote in message
...
So how many amps would i need to run the amplifier?
Thanks

Depends on the amplifier. But I can tell you right now that it's cheaper
to
buy a good home amplifier than it is to buy a power supply for the car
amp.
You're talking minimum $150, probably closer to $250. Even more if the
amp
is somewhat large.




"Mark Zarella" wrote in message
...
1 amp would have trouble running a head unit, let alone an amplifier.

"PoNDeR" wrote in message
u...
When running a DC transformer to test car audio at 12V is it
different
to
what comes out of the battery, I have a 12V power supply at 1 Amp.
Would
it
be possible to use this to run an amp and sub?
Thankyou

Amps x volts = watts. A 1 amp power supply would only run a 12 watt unit. A
10 amp power supply would run a 120 watt unit. Just do the math and see what
size power supply you need for your amp.Most power supplies should list the
amount of watts it puts out.
"Mark Zarella" wrote in message
...
So how many amps would i need to run the amplifier?
Thanks

Depends on the amplifier. But I can tell you right now that it's cheaper
to
buy a good home amplifier than it is to buy a power supply for the car
amp.
You're talking minimum $150, probably closer to $250. Even more if the
amp
is somewhat large.




"Mark Zarella" wrote in message
...
1 amp would have trouble running a head unit, let alone an amplifier.

"PoNDeR" wrote in message
u...
When running a DC transformer to test car audio at 12V is it
different
to
what comes out of the battery, I have a 12V power supply at 1 Amp.
Would
it
be possible to use this to run an amp and sub?
Thankyou

Amps x volts = watts. A 1 amp power supply would only run a 12 watt unit.

Assuming 100% efficiency. 50%efficiency is a more reasonable estimate.
That means 6 watts. That doesn't include power requirements for cd/tape
players and displays as found in typical head units.

"Mark Zarella" wrote in message
...
So how many amps would i need to run the amplifier?
Thanks

Depends on the amplifier. But I can tell you right now that it's
cheaper
to
buy a good home amplifier than it is to buy a power supply for the car
amp.
You're talking minimum $150, probably closer to $250. Even more if the
amp
is somewhat large.




"Mark Zarella" wrote in message
...
1 amp would have trouble running a head unit, let alone an
amplifier.

"PoNDeR" wrote in message
u...
When running a DC transformer to test car audio at 12V is it
different
to
what comes out of the battery, I have a 12V power supply at 1 Amp.
Would
it
be possible to use this to run an amp and sub?
Thankyou

In article ,
"PoNDeR" wrote:

Nah well i wasn't planning on using it for home just testing it before i put
it in the car, or seeing if there was a way i could use the power supply i
had

But thanks for your help




oh ok, i use an r/c car battery charger for that. snipped off the
battery plug and put some roach clips on the ends. 120vac in, 12vdc
out.. i think its got a 1amp fuse.

its good for popping out cds left in hu's after removal and simple amp
testing.

hth,

--
cyrus

*coughcasaucedoprodigynetcough*

You do know that a rather simple 10 or 15 amp power supply will do just fine
for firing up an amp, and maybe running the amp at lower volumes. Just to
see if you have audio output from the amp.

I have on many aoccasions done this with my small pyramid 12 amp pwersupply
for testing peoples stuff away from the house, cause my bigger power supply
is to bulky. The other supply is a astron 50A power supply and those run in
the neighborhood of $225 to $250. Of course I know hwere you can hook up
with a 1000 amp power supply for about $2,500 which will run any Car audio
amp on the market. One issue is that it needs a 240V three phase service to
use it.

You do know that a rather simple 10 or 15 amp power supply will do just
fine
for firing up an amp, and maybe running the amp at lower volumes. Just to
see if you have audio output from the amp.

Sure. How many people have a 10 or 15 amp power supply available? Even
those are pricey.

Unless this person plans on doing this regularly, he'd be best off just
lifting his hood and hooking it to the battery. Or if he has a spare
battery around, hooking it to that.

One must also take into account the conversion efficiency of the amplifier
power supply. Class AB is about 50% efficient.

JA

Rich wrote:

Amps x volts = watts. A 1 amp power supply would only run a 12 watt unit.
A 10 amp power supply would run a 120 watt unit. Just do the math and see
what size power supply you need for your amp.Most power supplies should
list the amount of watts it puts out.
"Mark Zarella" wrote in message
...
So how many amps would i need to run the amplifier?
Thanks

Depends on the amplifier. But I can tell you right now that it's cheaper
to
buy a good home amplifier than it is to buy a power supply for the car
amp.
You're talking minimum $150, probably closer to $250. Even more if the
amp
is somewhat large.




"Mark Zarella" wrote in message
...
1 amp would have trouble running a head unit, let alone an amplifier.

"PoNDeR" wrote in message
u...
When running a DC transformer to test car audio at 12V is it
different
to
what comes out of the battery, I have a 12V power supply at 1 Amp.
Would
it
be possible to use this to run an amp and sub?
Thankyou