Difference

[Sir-Lancelot 216]

There are no positives to strapping amplifiers unless you have have a serious impedance problem (you can't get the load you desire).

Even then, when strapping, you loose effeciency, loose dampening, add an extra gain stage (distortion), etc.... It's a manufacture #s game really....

Ohm's law doesn't change, as mentioned. If you don't change the wiring config (impedance) of the drivers, everything stays the same at the same voltage drive...

@95 Honda

See that what I am thinking and I am glad you brought that up. Strapping is easier, not better.

Would you agree that series parallel is also the least efficient way of wiring up drivers or do you think it has no effect?

Of the 2 examples below, which is more efficient or neither is going to have any effect?

The equipment:

4 D2 Subs

4 amps

1. 2 subs wired series/parallel presenting a 2 ohm load on a strapped pair of amps.

2. 1 sub wired to one amp, with each coil wired to each amp terminal (4 wires) presenting a 1ohm load.

I dont claim to know everything that's why I ask, but to me the shorter path of #2 would be more efficient. The series/parallel wiring has a longer current path. No?

Sorry to take over your thread OP, hopefully my question is useful to you also.

[///M5 2,833]

Ohm's law doesn't change, as mentioned. If you don't change the wiring config (impedance) of the drivers, everything stays the same at the same voltage drive...

@95 Honda

See that what I am thinking and I am glad you brought that up. Strapping is easier, not better.

Would you agree that series parallel is also the least efficient way of wiring up drivers or do you think it has no effect?

Perhaps it wasn't clear enough. The ONLY benefit to strapping is to deal with an owner who bought the wrong coils (or only the wrong coils were available) to get the same power. The other losses 95 highlighted are not positives. And again, you can't change Ohm's law so don't try

[Sir-Lancelot 216]

And again, you can't change Ohm's law so don't try

LOL. Not even if i ask it again in a different way? Good stuff guys. Thanks.

[///M5 2,833]

If you can prove it wrong, you'll rock the engineering world. Keep asking

[Impious 1,476]

let me welcome a thought i have.

2 amps independent vs strapping.

Assuming they put out the same power either way....

Strapping has as interesting feature that many people don't think about.

Current. The more current that is requested, the larger the wire needs to be...

The more current that a speaker accepts, the closer the thermal threshold is...

At some point, it could melt the tinsel leads, coils, etc..

Look at what happens when comparing independent vs strapping-

Let's say we have 2 1000w amps.

1000w@1ohm or 2000w strapped at 2ohm.

Right off the bat.. Why is the minimum load when strapped change to 2ohm?

Because most amps, when strapped, are done in SERIES.

What happens when you series batteries?

The ONLY thing that happens is a doubling of voltage.. All current characteristics stay the same.

So how does this translate to amps?

Let me show you-

each 1000w independently does 33v, 33a = 999w.

So if you had 1 sub, 2 amps, one on each coil, it would accept 66A to achieve 2000w!

YIKES! That's not safe!

What if we strapped them?

Strapping would double voltage, but maintain same current output(theoretically, current will go up slightly, but not much!)

IE- 2000w @2ohm =

66v, 33A..

What?!!?!?!?

Yes, the same current in, but double the power!

This is my take on strapping is better, ONLY AND I MEAN ONLY if it helps reduce innefficiency from thermal threshold and longevity playback(anything but burps)

In scenario 1 each coil would see 33V and 33A (it's actually 31.62 not 33, but not splitting hairs here)

In scenario 2, since the coils are wired in series voltage is divided between the loads and the current applied to each load is the same, so each coil would also see 33V and 33A

I'm failing to see a difference.

[///M5 2,833]

In scenario 1 each coil would see 33V and 33A (it's actually 31.62 not 33, but not splitting hairs here)

In scenario 2, since the coils are wired in series voltage is divided between the loads and the current applied to each load is the same, so each coil would also see 33V and 33A

I'm failing to see a difference.

Has to be that way unless Georg Ohm was wrong.

[onebadmonte 235]

Good read. Right now I'm in the position of having subs with the wrong coil configuration so I am going to strap a pair of amps to get max output out of them. Once I do that and cook the coils I recone to the proper voice coil cofiguration to get the most out of my amps without having to strap them together. I'm joking about cooking the coils. Thanks for sharing the pitfalls of strapping amps.

[Impious 1,476]

In scenario 1 each coil would see 33V and 33A (it's actually 31.62 not 33, but not splitting hairs here)

In scenario 2, since the coils are wired in series voltage is divided between the loads and the current applied to each load is the same, so each coil would also see 33V and 33A

I'm failing to see a difference.

Has to be that way unless Georg Ohm was wrong.

Well, I was pretty sure Mr Ohm was correct (last I checked, at least) but shizzon worded his post in a way that suggested that wasn't the case.

[///M5 2,833]

In scenario 1 each coil would see 33V and 33A (it's actually 31.62 not 33, but not splitting hairs here)

In scenario 2, since the coils are wired in series voltage is divided between the loads and the current applied to each load is the same, so each coil would also see 33V and 33A

I'm failing to see a difference.

Has to be that way unless Georg Ohm was wrong.

Well, I was pretty sure Mr Ohm was correct (last I checked, at least) but shizzon worded his post in a way that suggested that wasn't the case.

Ha, I read that post three times and couldn't figure out how he drew the conclusion which is why I clarified afterwards. Perhaps I should have been more clear in my response though, huh?