ok, so enlighten me....im going to replace the speakers in my hartke cab, and the speakers im looking at are 8ohm, its a 4x10, so what wiring will give me what ohms., i guess thats the question im trying to ask
Enjoy the benefits of a premium membership!
Upgrade Account
-
TalkBass has been independent since 1998. Add your voice.
Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
Join free Log in
Want zero display ads or expanded classifieds tools? Compare plans.
dumb ohm question,......again
- Thread starter JacksonsMen
- Start date
+1 to the above. Your power handling capacity will be 2x that of one of the single speakers.
If you don't mind me asking, What Hartke cab are you changing and what drivers are you puttnig in it?
If you don't mind me asking, What Hartke cab are you changing and what drivers are you puttnig in it?
410TP. . . and i havent quite settled on what to put in it yet, its kinda leaning towards the Eminence basslite CA2010, just to keep the aluminum cone thing going, but i've also looked into the legend bp102
okay then, how would this wiring configuration go to make it an 4 ohm capacity cab?
scottbass
Bass lines like a big, funky giant
nubs, you can't make a 4 ohm cab using four 8-ohm drivers. It can't be done. You would be violating the laws of math!
If you have four 8-ohm drivers, there are only eight ways you can wire them:
(1) --8--8--8--8--; this yields a 32-ohm cabinet
(2) --8--
--| |--8--8--; this yields a 20-ohm cabinet
--8--
(3) --8--
| |
--|-8-|--8--; this yields a 10.68-ohm cabinet
| |
--8--
(4) --8--8--
--| |--; this yields an 8-ohm cabinet
--8--8--
(5) --8-- --8--
--| |--| |--; this also yields an 8-ohm cabinet
--8-- --8--
(6) --8--8--8--
--| |--; this yields a 6-ohm cabinet
-----8-----
(7) --8--
---| |---
--| --8-- |--; this yields a 3.2-ohm cabinet
| |
---8---8---
(8) --8--
| |
|--8--|
--| |--; this yield a 2-ohm cabinet
|--8--|
| |
--8--
By the way, wiring as in (2), (3), (6) or (7) results in unbalanced speaker loads.
If you have four 8-ohm drivers, there are only eight ways you can wire them:
(1) --8--8--8--8--; this yields a 32-ohm cabinet
(2) --8--
--| |--8--8--; this yields a 20-ohm cabinet
--8--
(3) --8--
| |
--|-8-|--8--; this yields a 10.68-ohm cabinet
| |
--8--
(4) --8--8--
--| |--; this yields an 8-ohm cabinet
--8--8--
(5) --8-- --8--
--| |--| |--; this also yields an 8-ohm cabinet
--8-- --8--
(6) --8--8--8--
--| |--; this yields a 6-ohm cabinet
-----8-----
(7) --8--
---| |---
--| --8-- |--; this yields a 3.2-ohm cabinet
| |
---8---8---
(8) --8--
| |
|--8--|
--| |--; this yield a 2-ohm cabinet
|--8--|
| |
--8--
By the way, wiring as in (2), (3), (6) or (7) results in unbalanced speaker loads.
scottbass
Bass lines like a big, funky giant
OK, sorry, this font is proportiional and the lines don't line up.
(1) is all four drivers in series; 32 ohms
(2) is (two drivers in parallel) in series with (two drivers in series); 20 ohms
(3) is (three drivers in parallel) in series with one driver; 10.68 ohms
(4) is (two drivers in series) in parallel with (two drivers in series); 8 ohms
(5) is (two drivers in parallel) in series with (two drivers in parallel); 8 ohms - electrically identical to (4)
(6) is (three drivers in series) in parallel with one driver; 6 ohms
(7) is (two drivers in series) in parallel with (two drivers in parallel); 3.2 ohms
(8) is all four drivers in parallel; 2 ohms
(1) is all four drivers in series; 32 ohms
(2) is (two drivers in parallel) in series with (two drivers in series); 20 ohms
(3) is (three drivers in parallel) in series with one driver; 10.68 ohms
(4) is (two drivers in series) in parallel with (two drivers in series); 8 ohms
(5) is (two drivers in parallel) in series with (two drivers in parallel); 8 ohms - electrically identical to (4)
(6) is (three drivers in series) in parallel with one driver; 6 ohms
(7) is (two drivers in series) in parallel with (two drivers in parallel); 3.2 ohms
(8) is all four drivers in parallel; 2 ohms
Scott has it. You can't violate the laws of physics. If you were to put another 8 ohm cabinet underneath it, you could get 4 ohms, but that's it.
