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Old 12th July 2015, 08:29 PM   #1
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Default Kappa 15c or ????

Hello everyone, i currently have two yamaha A15 but i want to upgrade the drivers since they aren't that good, i wanted to get 4 ohms speakers not 8, since i could get more power out of any amp that its rated at 4 ohms. the Kappa 15C is the one i kind of like, but what do you guys think about this Eminence ? or about this speaker? i want them inside the Yamaha 2 way enclosures, used for full range. Is there any other 15" out there that you guys would recommend me?
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Old 13th July 2015, 02:07 AM   #2
freddi is offline freddi  United States
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good specs on the 15C hopefully the lowpass section of the crossover would take care of the peak before rolloff - here's a woofer which might also work - its moving mass is about double of the Eminence, low qts, decent reviews Dayton Audio PA380-8 15" Pro Woofer

if the moderator moves your query into multi-ways then you will probably will get more answers
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Old 13th July 2015, 04:29 AM   #3
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Originally Posted by freddi View Post
good specs on the 15C hopefully the lowpass section of the crossover would take care of the peak before rolloff - here's a woofer which might also work - its moving mass is about double of the Eminence, low qts, decent reviews Dayton Audio PA380-8 15" Pro Woofer

if the moderator moves your query into multi-ways then you will probably will get more answers
thanks for your answer, but if i choose a 8 ohms speakers, i would like the Kappa 15A more. this one looks good tho
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Old 14th July 2015, 08:28 PM   #4
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Originally Posted by dturro88 View Post
Hello everyone, i currently have two yamaha A15 but i want to upgrade the drivers since they aren't that good, i wanted to get 4 ohms speakers not 8, since i could get more power out of any amp that its rated at 4 ohms.
No you can not. Changing impedance requires changing crossover, unless...
(There are speakers/XO that you can do components change/diy to obtain similar response, if you are into it. post your speakers crossover layouts)
But that would be getting into too much trouble...
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Old 14th July 2015, 08:33 PM   #5
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By "fullrange" do you mean that you will not use the 2-way XO anymore?
Quote:
Originally Posted by dturro88 View Post
Hello everyone, i currently have two yamaha A15 but i want to upgrade the drivers since they aren't that good, i wanted to get 4 ohms speakers not 8, since i could get more power out of any amp that its rated at 4 ohms. the Kappa 15C is the one i kind of like, but what do you guys think about this Eminence ? or about this speaker? i want them inside the Yamaha 2 way enclosures, used for full range. Is there any other 15" out there that you guys would recommend me?
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Old 14th July 2015, 08:51 PM   #6
sreten is offline sreten  United Kingdom
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Hi,

Generally swapping drivers in half decent PA speakers is a bad idea.
Without redesign even a fantastic driver is likely to be little better.

rgds, sreten.
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Old 14th July 2015, 11:10 PM   #7
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Originally Posted by Inductor View Post
No you can not. Changing impedance requires changing crossover, unless...
(There are speakers/XO that you can do components change/diy to obtain similar response, if you are into it. post your speakers crossover layouts)
But that would be getting into too much trouble...
yes, that is true, i just got me two Peavey 1505 BW @ 8ohms because of what you said, too much trouble with the crossover, i would have to get new ones or modify mines. so to avoid all that i just got 8 ohms drivers, they are rated at 350 rms and its a way better speaker than the ones that comes with this yamaha A15 boxes. Thank you for you replay, when i read your comment that just was the trigger for avoiding a 4 ohms unless i would have used them with no crossover for the lows, just the highs. But its better to use crossover to cuts higher frequencies on the woofer.
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Old 14th July 2015, 11:11 PM   #8
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Originally Posted by Inductor View Post
By "fullrange" do you mean that you will not use the 2-way XO anymore?
well, yes and no, i was planing in use the crossover on the highs only, but since i got the 8 ohms speakers well, now i will continue using then
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Old 14th July 2015, 11:18 PM   #9
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Originally Posted by sreten View Post
Hi,

Generally swapping drivers in half decent PA speakers is a bad idea.
Without redesign even a fantastic driver is likely to be little better.

rgds, sreten.
you are correct 100%. But the drivers i got comes with pretty much the same enclosure size that i already have, but have better frequency response, way higher xmax and BL, my current drivers yes, they are decent, but honestly, the Radio shack 15 i have give me more bass inside the yamaha enclosures than the yamaha drivers, RS are way less quality, but i believe the 32Hz response they have make the difference here. This yamaha are great for vocals, awesome, but since i don't have subs and not planing in getting one for now (broken student) hahaha. Hopefully these Peavey 1505-8 BW will give me a bit more punch. i will just sell the yamahas
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Old 15th July 2015, 12:04 AM   #10
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Originally Posted by Inductor View Post
No you can not. Changing impedance requires changing crossover, unless...
(There are speakers/XO that you can do components change/diy to obtain similar response, if you are into it. post your speakers crossover layouts)
But that would be getting into too much trouble...
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