Underpowering my Subs
in [Live Sound]
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From: JWald on 12 Mar 2010 20:01 "liquidator" <mikeh(a)mad.scientist.com> wrote in message news:hk2agb$aqj$1(a)news.eternal-september.org... > > "JWald" <wldj4(a)grics.net> wrote in message > news:hk1uf20302p(a)enews5.newsguy.com... >> >> >> "liquidator" <mikeh(a)mad.scientist.com> wrote in message >> news:hk05p3$ico$1(a)news.eternal-september.org... >>> >>> "JWald" <wldj4(a)grics.net> wrote in message >>> news:hjvmun012mh(a)enews2.newsguy.com... >>>> >>>> I think that we are agreeing. >>> >>> No we aren't >>> >>> >>> I stated that to make one sub work correctly I >>>> need a 4 conductor cable between the PLX output and 1 sub. >>> >>> No you don't you can run a 2 condcter from the PLX and make the >>> connections at the sub end of the cable, just connect the pins like I >>> told you. >>> >>> >>> >>> My trouble comes >>>> from the fact that I only have 1 PLX, and therefore cannot run a second >>>> sub. >>> >>> 100% wrong, you just need to learn. >>> >>>> I decided to run both subs with a couple of RMX 2450's at 750w @4ohms. >>>> That would be 1 amp per sub. >>> >>> No reason to do that but if it floats tour boat... >>> >>> >>> Am I completely misunderstanding this? >>> >>> Yup. >>> >>> Just run a standard two conductor wire from each channel of the PLX and >>> connect the pins on a 4 pin at the sub end like I told you >>> positive first woof to positive second woof >>> >>> Neg first woof to neg second woof. >>> >>> Electronics 101 >>> >> Sorry. I couldn't get past the 4 conductor input at the sub. I never >> thought of jumping pins on the cable to feed the sub. Thanks. >> -- >> J Wald >> >> "You can lead a horticulture, but you can't make her think.... " >> >> > > It's funny isn't it, the simple things elude us sometimes...;-) > > We are looking for a complicated answer not a simple one... > OK, it's time to do the re-wire. I understand jumping the connectors on the cable end. I see where I can jump at the sub input as well. But, is there any reason, without doing damage, that I cannot jump from one set of driver terminals to the other to make the connection? Sure would be easier. Thanks for the help on this. -- J Wald "You can lead a horticulture, but you can't make her think.... "
From: liquidator on 12 Mar 2010 20:54 "JWald" <wldj4(a)grics.net> wrote in message news:hneot20s2a(a)enews1.newsguy.com... > "liquidator" <mikeh(a)mad.scientist.com> wrote in message > news:hk2agb$aqj$1(a)news.eternal-september.org... >> >> "JWald" <wldj4(a)grics.net> wrote in message >> news:hk1uf20302p(a)enews5.newsguy.com... >>> >>> >>> "liquidator" <mikeh(a)mad.scientist.com> wrote in message >>> news:hk05p3$ico$1(a)news.eternal-september.org... >>>> >>>> "JWald" <wldj4(a)grics.net> wrote in message >>>> news:hjvmun012mh(a)enews2.newsguy.com... >>>>> >>>>> I think that we are agreeing. >>>> >>>> No we aren't >>>> >>>> >>>> I stated that to make one sub work correctly I >>>>> need a 4 conductor cable between the PLX output and 1 sub. >>>> >>>> No you don't you can run a 2 condcter from the PLX and make the >>>> connections at the sub end of the cable, just connect the pins like I >>>> told you. >>>> >>>> >>>> >>>> My trouble comes >>>>> from the fact that I only have 1 PLX, and therefore cannot run a >>>>> second sub. >>>> >>>> 100% wrong, you just need to learn. >>>> >>>>> I decided to run both subs with a couple of RMX 2450's at 750w @4ohms. >>>>> That would be 1 amp per sub. >>>> >>>> No reason to do that but if it floats tour boat... >>>> >>>> >>>> Am I completely misunderstanding this? >>>> >>>> Yup. >>>> >>>> Just run a standard two conductor wire from each channel of the PLX and >>>> connect the pins on a 4 pin at the sub end like I told you >>>> positive first woof to positive second woof >>>> >>>> Neg first woof to neg second woof. >>>> >>>> Electronics 101 >>>> >>> Sorry. I couldn't get past the 4 conductor input at the sub. I never >>> thought of jumping pins on the cable to feed the sub. Thanks. >>> -- >>> J Wald >>> >>> "You can lead a horticulture, but you can't make her think.... " >>> >>> >> >> It's funny isn't it, the simple things elude us sometimes...;-) >> >> We are looking for a complicated answer not a simple one... >> > > OK, it's time to do the re-wire. I understand jumping the connectors on > the cable end. I see where I can jump at the sub input as well. But, is > there any reason, without doing damage, that I cannot jump from one set of > driver terminals to the other to make the connection? Sure would be > easier. Thanks for the help on this. > > > -- > J Wald > > "You can lead a horticulture, but you can't make her think.... " > That should work fine. the sub would then be permanently that way, unless you open it up and change. the advantage to the cable option is just change cables and you are back. If you are always gonna be using them the same way I see no issue...I would put some sort of label on the back as far as what you have done...
From: JWald on 13 Mar 2010 00:07 "liquidator" <mikeh(a)mad.scientist.com> wrote in message news:hnerc2$psr$1(a)news.eternal-september.org... > > "JWald" <wldj4(a)grics.net> wrote in message > news:hneot20s2a(a)enews1.newsguy.com... >> "liquidator" <mikeh(a)mad.scientist.com> wrote in message >> news:hk2agb$aqj$1(a)news.eternal-september.org... >>> >>> "JWald" <wldj4(a)grics.net> wrote in message >>> news:hk1uf20302p(a)enews5.newsguy.com... >>>> >>>> >>>> "liquidator" <mikeh(a)mad.scientist.com> wrote in message >>>> news:hk05p3$ico$1(a)news.eternal-september.org... >>>>> >>>>> "JWald" <wldj4(a)grics.net> wrote in message >>>>> news:hjvmun012mh(a)enews2.newsguy.com... >>>>>> >>>>>> I think that we are agreeing. >>>>> >>>>> No we aren't >>>>> >>>>> >>>>> I stated that to make one sub work correctly I >>>>>> need a 4 conductor cable between the PLX output and 1 sub. >>>>> >>>>> No you don't you can run a 2 condcter from the PLX and make the >>>>> connections at the sub end of the cable, just connect the pins like I >>>>> told you. >>>>> >>>>> >>>>> >>>>> My trouble comes >>>>>> from the fact that I only have 1 PLX, and therefore cannot run a >>>>>> second sub. >>>>> >>>>> 100% wrong, you just need to learn. >>>>> >>>>>> I decided to run both subs with a couple of RMX 2450's at 750w >>>>>> @4ohms. That would be 1 amp per sub. >>>>> >>>>> No reason to do that but if it floats tour boat... >>>>> >>>>> >>>>> Am I completely misunderstanding this? >>>>> >>>>> Yup. >>>>> >>>>> Just run a standard two conductor wire from each channel of the PLX >>>>> and connect the pins on a 4 pin at the sub end like I told you >>>>> positive first woof to positive second woof >>>>> >>>>> Neg first woof to neg second woof. >>>>> >>>>> Electronics 101 >>>>> >>>> Sorry. I couldn't get past the 4 conductor input at the sub. I never >>>> thought of jumping pins on the cable to feed the sub. Thanks. >>>> -- >>>> J Wald >>>> >>>> "You can lead a horticulture, but you can't make her think.... " >>>> >>>> >>> >>> It's funny isn't it, the simple things elude us sometimes...;-) >>> >>> We are looking for a complicated answer not a simple one... >>> >> >> OK, it's time to do the re-wire. I understand jumping the connectors on >> the cable end. I see where I can jump at the sub input as well. But, is >> there any reason, without doing damage, that I cannot jump from one set >> of driver terminals to the other to make the connection? Sure would be >> easier. Thanks for the help on this. >> >> >> -- >> J Wald >> >> "You can lead a horticulture, but you can't make her think.... " >> > > That should work fine. the sub would then be permanently that way, unless > you open it up and change. the advantage to the cable option is just > change cables and you are back. > > If you are always gonna be using them the same way I see no issue...I > would put some sort of label on the back as far as what you have done... > Thanks. -- J Wald "You can lead a horticulture, but you can't make her think.... "
From: JWald on 16 Mar 2010 15:20 Mike, While doing the re-wire, I noticed that the positive terminal of the second driver was wired from the 2- of the input connector. Likewise, the negative terminal was fed from the 2+. That seems backwards to me. Is that right, or has someone been in there before and got them switched up? Thanks. -- J Wald "You can lead a horticulture, but you can't make her think.... " "JWald" <wldj4(a)grics.net> wrote in message news:hnf6j9015dq(a)enews1.newsguy.com... > > > "liquidator" <mikeh(a)mad.scientist.com> wrote in message > news:hnerc2$psr$1(a)news.eternal-september.org... >> >> "JWald" <wldj4(a)grics.net> wrote in message >> news:hneot20s2a(a)enews1.newsguy.com... >>> "liquidator" <mikeh(a)mad.scientist.com> wrote in message >>> news:hk2agb$aqj$1(a)news.eternal-september.org... >>>> >>>> "JWald" <wldj4(a)grics.net> wrote in message >>>> news:hk1uf20302p(a)enews5.newsguy.com... >>>>> >>>>> >>>>> "liquidator" <mikeh(a)mad.scientist.com> wrote in message >>>>> news:hk05p3$ico$1(a)news.eternal-september.org... >>>>>> >>>>>> "JWald" <wldj4(a)grics.net> wrote in message >>>>>> news:hjvmun012mh(a)enews2.newsguy.com... >>>>>>> >>>>>>> I think that we are agreeing. >>>>>> >>>>>> No we aren't >>>>>> >>>>>> >>>>>> I stated that to make one sub work correctly I >>>>>>> need a 4 conductor cable between the PLX output and 1 sub. >>>>>> >>>>>> No you don't you can run a 2 condcter from the PLX and make the >>>>>> connections at the sub end of the cable, just connect the pins like I >>>>>> told you. >>>>>> >>>>>> >>>>>> >>>>>> My trouble comes >>>>>>> from the fact that I only have 1 PLX, and therefore cannot run a >>>>>>> second sub. >>>>>> >>>>>> 100% wrong, you just need to learn. >>>>>> >>>>>>> I decided to run both subs with a couple of RMX 2450's at 750w >>>>>>> @4ohms. That would be 1 amp per sub. >>>>>> >>>>>> No reason to do that but if it floats tour boat... >>>>>> >>>>>> >>>>>> Am I completely misunderstanding this? >>>>>> >>>>>> Yup. >>>>>> >>>>>> Just run a standard two conductor wire from each channel of the PLX >>>>>> and connect the pins on a 4 pin at the sub end like I told you >>>>>> positive first woof to positive second woof >>>>>> >>>>>> Neg first woof to neg second woof. >>>>>> >>>>>> Electronics 101 >>>>>> >>>>> Sorry. I couldn't get past the 4 conductor input at the sub. I never >>>>> thought of jumping pins on the cable to feed the sub. Thanks. >>>>> -- >>>>> J Wald >>>>> >>>>> "You can lead a horticulture, but you can't make her think.... " >>>>> >>>>> >>>> >>>> It's funny isn't it, the simple things elude us sometimes...;-) >>>> >>>> We are looking for a complicated answer not a simple one... >>>> >>> >>> OK, it's time to do the re-wire. I understand jumping the connectors on >>> the cable end. I see where I can jump at the sub input as well. But, is >>> there any reason, without doing damage, that I cannot jump from one set >>> of driver terminals to the other to make the connection? Sure would be >>> easier. Thanks for the help on this. >>> >>> >>> -- >>> J Wald >>> >>> "You can lead a horticulture, but you can't make her think.... " >>> >> >> That should work fine. the sub would then be permanently that way, unless >> you open it up and change. the advantage to the cable option is just >> change cables and you are back. >> >> If you are always gonna be using them the same way I see no issue...I >> would put some sort of label on the back as far as what you have done... >> > > Thanks. > -- > J Wald > > "You can lead a horticulture, but you can't make her think.... " >
From: Denny Strauser on 16 Mar 2010 15:41
JWald wrote: > Mike, > While doing the re-wire, I noticed that the positive terminal of the second > driver was wired from the 2- of the input connector. Likewise, the negative > terminal was fed from the 2+. That seems backwards to me. Is that right, or > has someone been in there before and got them switched up? Thanks. It depends. JBL speakers have black lugs as positive. All other speakers have red lug positive. -Denny |