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ALS'S Terminal cups!

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RichP714

SILVER-7t

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Joined: Fri Oct 12, 2007 2:12 pm

Post Thu May 08, 2008 10:15 am

Re: ALS'S Terminal cups!

maddmaxxx wrote:-...-i'm a little confused about wiring 3-4 woofers in series/paralell as to achieve 2 or 4 ohm R [as in originals/plats/silvers], when going to active x-overs
The originals look like (according to the schematic ) they're all in parallel...the schematic says 2.7 ohms. Are they 12 ohm drivers?

Regardless, you shouldn't have to re-wire the driver array, just take the two wires to the crossover and bypass it.
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maddmaxxx

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(Pair of Silver 9t's)

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Post Thu May 08, 2008 7:00 pm

Re: ALS'S Terminal cups!

-the originals are 4 ohm x4 woofs

-the silvers/plats are 16 ohm x3 or 4 woofs

-pretty much originals are rated 4 ohm total

-sil/plats 8 ohm total [actualy 6.6 ohms]
-* © Küül ®™ /mx...
-Too hip gotta book
-"Don't BAN me Bro!"...el/doro
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RichP714

SILVER-7t

Posts: 1789

Joined: Fri Oct 12, 2007 2:12 pm

Post Thu May 08, 2008 8:08 pm

Re: ALS'S Terminal cups!

maddmaxxx wrote:-the originals are 4 ohm x4 woofs

-the silvers/plats are 16 ohm x3 or 4 woofs

-pretty much originals are rated 4 ohm total

-sil/plats 8 ohm total [actualy 6.6 ohms]
The wiring diagram is wrong then....
anyway.

For 4 X 4 ohm drivers, wire the top two in series (for 8R), the bottom two in series (for 8R), and then the two arrays in parallel (back to 4R)

The wiring diagram shows the silvers and plats all in parallel, 3 drivers would be 5.3 ohms, 4 would be 4 ohms.

Resistance in series is just added.

Resistance in parallel is the inverse of the sum of the inverses (nine times fast ;)
- take the inverse of each resistance, add each number together, take the inverse of that.

so for 4 16R drivers in parallel:

R = 1/ (1/16)+(1/16)+(1/16)+(1/16)
R = 1/ 0.0625+0.0625+0.0625+0.0625
R = 1/ 0.25
R = 4
Last edited by RichP714 on Thu May 08, 2008 8:21 pm, edited 1 time in total.
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maddmaxxx

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(Pair of Silver 9t's)

Posts: 2951

Joined: Wed Oct 27, 2004 6:18 pm

Location: the World We Skate Our 'Choppers' Thru

Post Thu May 08, 2008 8:16 pm

Re: ALS'S Terminal cups!

-sorry richp...

-the 'total' figures include the ribbons

-so original ribbons = 2 ohms [1ohm ea 30"er]...sil/plats = 4 ohm

-basicly ...just woofer totals are originals = 2 ohm...sil/plat = 4 ohms


-confused more ???...did'nt meen too

-sorry guy
-* © Küül ®™ /mx...
-Too hip gotta book
-"Don't BAN me Bro!"...el/doro
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