Smd ad-1 vs clamping read before being a smartass please.

[Dd9515 king]

Why is everyone saying clamping is wrong? I know the ad-1 is to show you what your amp does at a set ohms loud. Its cool to know what my amp does at that ohm loud. How do you find how Efficient you box is? The ad-1 has nothing to do with the subs or box. In spl people dont care what there amp does at 1 ohm they want to know what it puts out with there subs playing. Say you have a t3000 rf with a fi sp4. We all know the amp does over rated. If you build a horrible box. What would the amp truly be putting out.

[mrd6]

The problem with "clamping" is that you simply can't compute power output with the information you get from a clamp and volt meter. You can find VoltAmps but that number really isnt important and doesnt tell you anything about how your equipment is performing.

[stevog]

Then you sir need to preorder the SMD AMM-1.

[OrionStang]

I predict this thread getting out of hand quickly.

[Tecomah]

I predict this thread getting out of hand quickly.

I agree. This may end badly

[Jessica]

Well, the purpose of the AD-1 is to test an amp while it is in your car to see if your electrical can support your amp, and to see what amplifiers do a various ohm loads. Also, like Stevog said, the AMM-1 is more focused on testing the power your are getting to your subs at various frequencies, among other things.

think of it like this, a Dyno for a car doesnt take into account wind, or rain or track conditions, it just tells you what power you are getting to the wheels, its up to you to make sure you are getting the most of that power.

edit :typo

[Dd9515 king]

Thank you strange. Without the amm in mind how would you find the power output of your amp at your resonant frequency of the car? The reason i ask at the resonant frequency is the current amd voltage are in line at that point.

[AMI CUSTOMS]

Dual probe oscope is how you find actual output without the amm-1. And you can NEVER have the current and voltage in phase in a AC system. That would be 100% efficiency or a power factor of 1, doesnt exist.

Oscope is only way to see at what point in time each current wave and voltage wave is doing at the same time, then you can calculate phase angle, take cosine of that angle and get power factor, bam there is your efficiency.

[Wicks]

Dual probe oscope is how you find actual output without the amm-1. And you can NEVER have the current and voltage in phase in a AC system. That would be 100% efficiency or a power factor of 1, doesnt exist.

Oscope is only way to see at what point in time each current wave and voltage wave is doing at the same time, then you can calculate phase angle, take cosine of that angle and get power factor, bam there is your efficiency.

WHOA....

I think you're mixing up efficiency and power factor.

Sure you can have the current and voltage in phase in an AC circuit. Take a non-inductive resistor and plug it into an AC outlet, everything is in phase.

In fact that's exactly how the AD-1 works. It applies your amplifier output (AC) to a very large resistive bank which keeps everything in phase and is able to measure output power in a worst case scenario (constant load across all frequency's).

Power Factor is the ratio of real power in a system to the apparent power.

Resistors (ideal) have a PF of 1 as all power is real.

Capacitors (ideal) have a PF of 0 since the phase angle is 90deg and there is no real power dissipated.

Efficiency is a ratio of the output power in a system to its input power.

Since there are no perfect conductors, you can never have 100% efficiency.

[IBleedMusick]

Dual probe oscope is how you find actual output without the amm-1. And you can NEVER have the current and voltage in phase in a AC system. That would be 100% efficiency or a power factor of 1, doesnt exist.

Oscope is only way to see at what point in time each current wave and voltage wave is doing at the same time, then you can calculate phase angle, take cosine of that angle and get power factor, bam there is your efficiency.

WHOA....

I think you're mixing up efficiency and power factor.

Sure you can have the current and voltage in phase in an AC circuit. Take a non-inductive resistor and plug it into an AC outlet, everything is in phase.

In fact that's exactly how the AD-1 works. It applies your amplifier output (AC) to a very large resistive bank which keeps everything in phase and is able to measure output power in a worst case scenario (constant load across all frequency's).

Power Factor is the ratio of real power in a system to the apparent power.

Resistors (ideal) have a PF of 1 as all power is real.

Capacitors (ideal) have a PF of 0 since the phase angle is 90deg and there is no real power dissipated.

Efficiency is a ratio of the output power in a system to its input power.

Since there are no perfect conductors, you can never have 100% efficiency.

WHOA!!!! WHOA!!! WHOA!!! I think you just made my brain hurt.