|  | | 
02-19-2011, 12:07 PM
| | Registered User | | Join Date: Jul 2007 Location: maryland,usa | | | Blew the 12" speaker in my GK Neo 112
Sign in to disble this ad
Last night at one of my band's rehearsal I only had one of my GK Neo 112 with me and pushed it a little too hard. Now it is making a flapping/distorted sound. Time to upgrade the speaker. I've been looking at the Eminence Kappalite 3012 HO or 3012 LF as a replacement.
I measured the cabinet and the internal volume is 2.8 cubic feet which is within specification for the 3012 HO according to the Eminence spec sheet. The 3012 LF is recommended for a cabinet 1.3-3.0 cubic feet. The 3012 LF upper frequency response is 2k hz vs the 3012 HO's 3.5k hz. I don't know what the crossover point is in the GK cabinet for the horn. I usually only run the horn at 1/4 volume.
Anyone have experience with the Eminence Kappalite speakers and a suggestion on which Kappalite would suit the GK cabinet best? I usually play with two of the GK Neo 112s at the same time but screwed up last night.
Last edited by bass4u : 02-20-2011 at 03:12 AM.
Reason: recalculated speaker box
|
02-19-2011, 12:44 PM
|  | Less Ebay, more Mel Bay | | Join Date: Jul 2007 Location: Phoenix, AZ | | | Do not put a 3012HO in 3.4 cubic feet. If it's really 3.4 cubic feet gross, the 3012LF would be the best fit. However, it requires a midrange horn or woofer to work optimally.
A Deltalite 2512II would be the best fit in that box size and full range.
__________________
Dingwall ABZ 5
Lots of pedals
Markbass SD1200 -> fEarful 1515/66 (or TC115N) Red Complex |
02-19-2011, 01:25 PM
| | Registered User | | Join Date: Mar 2006 Location: Metro D.C. and Brooklyn, NY | | Quote:
Originally Posted by rpsands  Do not put a 3012HO in 3.4 cubic feet. If it's really 3.4 cubic feet gross, the 3012LF would be the best fit. However, it requires a midrange horn or woofer to work optimally.
A Deltalite 2512II would be the best fit in that box size and full range. | I agree with the 2512. I have one in a similarly sized 1x12, and it sounds fantastic.
__________________
CLUBS: #201 Ampeg, #37 nekkid FB, #144 Fretless, #244 G&L, #66 Stingray
Last edited by eastcoasteddie : 02-19-2011 at 01:29 PM.
|
02-19-2011, 04:02 PM
| | Registered User | | Join Date: Jul 2007 Location: maryland,usa | | | I looked at a Deltalite but since it is only rated at 250 watts it is
out of the question considering the original GK 12" speaker is rated at 300 watts. I want a speaker that is at least 300 watts or more.
I used a speaker box program calculator to determine the internal cabinet volume after taking internal measurements including the vent size.
The 3012 HO is rated down to 51 hz which is exactly what the GK cabinet rating is so I thought it would be a good match.
Last edited by bass4u : 02-19-2011 at 04:31 PM.
|
02-19-2011, 04:40 PM
| | | | hmmmm
Just because the original speaker is rated higher doesn't mean it will perform better than the Deltalite. Usable wattage in many cases is much lower than rated wattage.
I've been rehearsing with a 12", 3-way Dr. Bass (1260) and it's been a champ. Pushing about 200w into also, but I know to to back off the bass knob when I turn up the volume. I prefer tone over mud anyway so I have yet to approach the limits of the cab. It helps having a tweeter and a midrange (of course) but with your GK you should be empasizing more mids (to cut) when things get loud. Too late. : (
Last edited by jeff7bass : 02-19-2011 at 04:51 PM.
|
02-19-2011, 08:21 PM
| | Registered User
Owner, Bill Fitzmaurice Loudspeaker Design | | Join Date: Sep 2004 Location: New Hampshire | | Quote:
Originally Posted by bass4u I looked at a Deltalite but since it is only rated at 250 watts it is
out of the question considering the original GK 12" speaker is rated at 300 watts. I want a speaker that is at least 300 watts or more.
I used a speaker box program calculator to determine the internal cabinet volume after taking internal measurements including the vent size.
The 3012 HO is rated down to 51 hz which is exactly what the GK cabinet rating is so I thought it would be a good match. | Wattage ratings are moot. Output is limited by driver displacement (spec Vd). The 51 Hz is the driver fs, also moot, and it does not define response, it's just one of a dozen specs that do. What counts is how it models in the cab. Also consider that if you use a different driver from the G-K you'll have cabs with different responses. |
02-19-2011, 08:23 PM
|  | iPhone/iPad, Droid, and Kindle apps now available!
Editor-in-Chief, Bass Gear Magazine | | Join Date: Apr 2003 Location: North central Ohio | | | Why not just get another driver from GK? |
02-19-2011, 08:26 PM
| | Registered User | | Join Date: Sep 2007 Location: Bessemer, AL | | | Betteryet, have the original speaker reconed if possible |
02-19-2011, 08:44 PM
| | Registered User | | Join Date: Jan 2010 Location: valparaiso, in. | | | Having the original speaker reconed would be your best bet, and from my experience a bit of a money saver too. |
02-19-2011, 08:49 PM
| | Registered User | | Join Date: Feb 2004 Location: Bristol, Connecticut, USA | | | Are you sure about the internal volume because that seems large for a typical 1 x 12 box. Just glancing at the GK neo 12 II cab tells me that the internal volume is about 2.2 cu. ft. which is more like what I would expect to find. |
02-19-2011, 08:56 PM
|  | Regal User | | Join Date: Dec 2007 Location: Orange County, CA | | | Ideally, reconing is the most logical thing to do. I put a deltalite 2512 in my GK 112-I a long time ago and I quite liked it. I'm not sure if the Neo 112-II is substantially different though. |
02-19-2011, 08:58 PM
|  | Bassman7654 | | Join Date: Sep 2002 Location: North Las Vegas NV | | Quote:
Originally Posted by tombowlus Why not just get another driver from GK? | +1 and you wont have to wonder how it will sound.
__________________
GK 1001RB II, & MB800, NEO 212 & 210 cabs, Boss GT10-B, Roscoe SKB 3007, Brubaker Brute MJX-5, Fender 62 USA RI, Ibanez SR400, Barcus 6 string. And various other toys. G.A.S. and G.E.
|
02-19-2011, 08:58 PM
| | Bassman7654 | | Join Date: Sep 2002 Location: North Las Vegas NV | | Quote:
Originally Posted by Bassman822 Betteryet, have the original speaker reconed if possible | +2 
__________________
GK 1001RB II, & MB800, NEO 212 & 210 cabs, Boss GT10-B, Roscoe SKB 3007, Brubaker Brute MJX-5, Fender 62 USA RI, Ibanez SR400, Barcus 6 string. And various other toys. G.A.S. and G.E.
|
02-19-2011, 09:30 PM
|  | Hey, what does this knob do? | | Join Date: Sep 2008 Location: New Hampshire | | There's another consideration: Quote:
Originally Posted by bass4u I usually play with two of the GK Neo 112s | This means if you replace one cab's driver with a non-factory one, you MIGHT run into phasing anomalies when you're running both cabs together, because they'll be running non-identical drivers. It might work out, it might be awful, or it might lie tolerably in between. You can't predict these things. (In terms of best practices, though, it ain't.) |
02-19-2011, 10:53 PM
| | | | GK will charge you $179 per their website for a new driver. If your local repair tech can get the right recone kit from Eminence it should be cheaper going that route. |
02-20-2011, 03:08 AM
| | Registered User | | Join Date: Jul 2007 Location: maryland,usa | | | If GK wants $179 for a new speaker I can get the 3012 HO for $166 shipped. Anyone have any suggestions for a 400 watt or more 12" Neo driver to use in the GK cabinet ?
I use a GK MB500 with both cabinets and use a 5 string at times, with a loud drummer in one of my bands and would like to have that extra measure of wattage. I used to have a Markbass LM II with two Markbass NYC 121 cabinets (rated at 400 watts each) and could push them hard without any issues. I Should have kept those cabinets to use with the GK head. I just couldn't stand the piezos in the MB cabinets.
When I find the right speaker to use in the GK cabinet I will get two of them. The GK Neo 112 doesn't perform well with a passive 5 string pushing the amp at half volume......at least mine don't. |
02-20-2011, 06:45 AM
| | | | I don't know of a Neo 12" rated that high. If you don't mind adding a little weight a ceramic Delta 12LF is rated at 500 watts but thats the only driver I know of. Good luck. |
02-20-2011, 06:59 AM
| | Registered User | | Join Date: Jul 2007 Location: maryland,usa | | Quote:
Originally Posted by Doug Parent I don't know of a Neo 12" rated that high. If you don't mind adding a little weight a ceramic Delta 12LF is rated at 500 watts but thats the only driver I know of. Good luck. | It has to be a Neo speaker for the weight factor.
The 3012 LF is rated at 450 watts. The 3012 HO at 400 watts. I'm also interested in B&C speakers, they make a 400 and 500 watt Neo. |
02-20-2011, 07:21 AM
| | Registered User | | Join Date: Apr 2001 Location: Wausau, WI | | Quote:
Originally Posted by bass4u It has to be a Neo speaker for the weight factor.
The 3012 LF is rated at 450 watts. The 3012 HO at 400 watts. I'm also interested in B&C speakers, they make a 400 and 500 watt Neo. | You really need to give up this notion that you need a speaker of a certain wattage. The wattage rating for a speaker is just when it will melt the voice coil...not when you'll blow the speaker.
Part of the reason you may have blown your driver in the first place is not understanding that ALL speakers are displacement limited (their power handling is limited by the cabinet they are put in) and they will blow long before you ever melt the voice coil.
If you're 300 watt speaker is displacement limited in its cab to only 100 watts, then once you hit it with 100 watts, that's all the louder it will go and anything above that is wasted energy and it will fart out and/or blow way before you ever reach that mythical 300 watts.
Find a speaker that matches the cab design (ideally the exact one you blew).
EDIT: It sure would be nice if manufacturers listed the displacement limitation on their cabs instead of the wattage rating of the speaker. But that's for another thread.  Hey, listen up, cab manufacturers! Rant coming! < Did someone actually say in that thread that manufacturer specs weren't important? 
__________________
fEARful...that's about as good as it gets.
Last edited by Sundogue : 02-20-2011 at 07:31 AM.
|
02-20-2011, 07:27 AM
|  | http://greenboy.us/forum/
greenboy designs: fEARful, bassic, dually, crazy88 etc | | Join Date: Dec 2000 Location: remote mountain cabin Montana | | | Greets, all
I gotta say, it's rather understandable for site newbies to still buy into the wattage ratings game for bass speakers. But if you've been around talkbass for awhile and you still don't realize how meaningless those ratings are in a real world bass guitar context, you must be reading all the wrong posts.
Far more important is what the xmax of any driver allows in the given box's internal size and tuning. Most common and cheapie drivers hit the limits of xmax at 1/3 to 1/2 the thermal rating, which is why it doesn't matter as much. | | Thread Tools | Search this Thread | | | | 
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off | | | |
