dual rectifier alternator

i saw these online and i was looking for reviews on what people thought about them and couldnt find nothing . so my question go with this type of alternator or a HO alternator

http://store.alternatorparts.com/cs144-series-dual-rectifier-alternators.aspx

1993 sdv

Alpine 4x6 6x9 5 1/4 swr-10d4

alpine v60

12.5 VGA flip down

Nettop pc w/10" touch screen

78nova

5-re audio 5x7 ,10" sub &

Xtx-500.5

"Take the faceplate off get the jumperpack"

Those look like HO alts to me...Support the12volt.com

Right but the ones I dealt with only have one set of rectifers and they are inside the alts casing .is there any difference to the salts output with a dual set of rectifiers bridged1993 sdv

Alpine 4x6 6x9 5 1/4 swr-10d4

alpine v60

12.5 VGA flip down

Nettop pc w/10" touch screen

78nova

5-re audio 5x7 ,10" sub &

Xtx-500.5

"Take the faceplate off get the jumperpack"

No idea, never used one that I klnow of, but the theory is good.Support the12volt.com

Apparently the diodes are the major source of failure in HO alternators. In my experience with normal alternators, the main diodes are not a problem - except for foray with Bosch which blew after jump starting and also just running a flat battery (ie, same effect as "after" a jump start). If high capacity diodes are difficult or expensive to get with HO alternators, I can see why 2 sets of cheaper or available diodes are used. Whether they are needed or not is another issue. (What is their replacement cost? Is an easy to replace single-diode set an option? Etc.)

In other words two sets of cheap diodes are better than one.1993 sdv

Alpine 4x6 6x9 5 1/4 swr-10d4

alpine v60

12.5 VGA flip down

Nettop pc w/10" touch screen

78nova

5-re audio 5x7 ,10" sub &

Xtx-500.5

"Take the faceplate off get the jumperpack"

I did NOT say that.

So is it worth the buy or stick with the regular hi output alts1993 sdv

Alpine 4x6 6x9 5 1/4 swr-10d4

alpine v60

12.5 VGA flip down

Nettop pc w/10" touch screen

78nova

5-re audio 5x7 ,10" sub &

Xtx-500.5

"Take the faceplate off get the jumperpack"

They're probably the same diodes, just pressed into a second heat-sink, and attatched to the outside of the alternator case. IF those photos are accurate, then the bridge attached to the outside looks exactly like every internal bridge I've ever seen - my guess is it's just a paralleled set, clamped to the outside. Paralleling a second set of diodes simply reduces the stress that a single set would see, in theory improving the life-span of any given diode. Depending on how they're clamped to the outside, I can see that the external bridge set looks like it actually interferes with air flow for the internal set, thus offsetting any claimed stress gains. I can't see any gain, really... A gain in one direction, with a corresponding loss in the other. Not worth it, AFAIAC. The prices do look a little more reasonable than a comparable HO alternator with a single internal bridge, though...It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."