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12-18-2011, 05:07 PM
| | Registered User | | Join Date: Feb 2011 Location: The Abyss of What is my Mind | | | 8ohm to 4ohm
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So I must be missing something. By everyone's schematics, there's no way I can make a 4x12 4ohm cab since everyone carries only 8ohm speakers. How is it that manufacturers can make one though? Is it wiring, or they have someone making 4ohm speakers for the specifically? Idk. Please fill me in. Thanks.
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12-18-2011, 05:11 PM
| | Registered User | | Join Date: May 2006 Location: austin,tx | | | When you buy drivers by the hundred or the thousand, you can have them made to whatever spec you want. |
12-18-2011, 05:29 PM
| | Registered User | | Join Date: Feb 2011 Location: The Abyss of What is my Mind | | | Yeah. Too true.
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12-18-2011, 05:47 PM
| | Registered User | | Join Date: Mar 2007 Location: White Plains | | | Can't you purchase (4) 12" 16 ohm speakers?
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12-18-2011, 06:01 PM
|  | Registered User | | Join Date: Nov 2007 Location: boston, ma | | Quote:
Originally Posted by bassgod0dmw  Can't you purchase (4) 12" 16 ohm speakers? | Theoretically, but most 12" bass speakers are 8 ohm. Eminence has the Delta-12LFC which is 4 ohm, but whether or not that will work in the OP's cab is unknown. |
12-18-2011, 08:14 PM
|  | Registered User | | Join Date: Sep 2008 Location: Washington Township, NJ | | | I know it gets pricey, but Aguilar sells 12" 16 ohm replacement speakers on their website for $140 each. I think they're made by Eminence for Aguilar. This is the speaker they use for their 4X12 cabinet. So there are 16 ohm 12s out there.
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12-18-2011, 08:41 PM
| | Registered User | | Join Date: Apr 2007 Location: Finland (Northern Europe) | | | Hi.
The last time I checked (quite a while ago), there was some 4 & 16 Ohm versions available from every manufacturer I checked.
Whether the price point or the model is to Your liking, that's a whole another ballgame.
Might be easier to switch the tap on the OT to 8Ohm and use the readily available drivers.
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Sam |
12-18-2011, 10:46 PM
| | Registered User | | Join Date: Jan 2009 Location: Northern California | | Wire 4 12" 16 ohms in parallel to get 4 ohms. I think thats right, correct me if I'm wrong. 
theres a few 12" 16 ohms to select from here: US SPEAKER - 12" Speakers - 12" bass speakers & 12" guitar speakers by Eminence Speaker, JBL, EV, RCF, Beyma, Peavey, Celestion, P.Audio, Ampeg, Crate, Jensen, Fane and Pyle. 12" bass speakers & 12" guitar speakers. Find the right 12" woofer here.
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12-19-2011, 12:23 AM
| | Registered User | | Join Date: Jan 2009 Location: Northern California | | Oh, heres the wiring info. Speaker Wiring Info
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12-19-2011, 01:35 AM
| | Registered User | | Join Date: Apr 2010 Location: cincy ky | | | check parts express. anytime i've been shopping, i've found slightly better pricing there than at us speaker.
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12-19-2011, 04:29 AM
| | Registered User | | Join Date: Nov 2007 Location: boston, ma | | Quote:
Originally Posted by darius8 Wire 4 12" 16 ohms in parallel to get 4 ohms. I think thats right, correct me if I'm wrong.
theres a few 12" 16 ohms to select from here: US SPEAKER - 12" Speakers - 12" bass speakers & 12" guitar speakers by Eminence Speaker, JBL, EV, RCF, Beyma, Peavey, Celestion, P.Audio, Ampeg, Crate, Jensen, Fane and Pyle. 12" bass speakers & 12" guitar speakers. Find the right 12" woofer here. | I scanned the same list, somehow missed the Eminece Delta 12B at 16 ohms. The others on the list are either subwoofers, guitar speakers, or $200/speaker. At that price point (actually at any price) it's probably better to just buy a new cab in the correct impedance rather than trying to fit off the shelf speakers to fit your cab's dimensions unless you're building from scratch. |
12-19-2011, 06:29 AM
| | Registered User | | Join Date: Jan 2009 Location: Northern California | | Quote:
Originally Posted by coreyfyfe I scanned the same list, somehow missed the Eminece Delta 12B at 16 ohms. The others on the list are either subwoofers, guitar speakers, or $200/speaker. At that price point (actually at any price) it's probably better to just buy a new cab in the correct impedance rather than trying to fit off the shelf speakers to fit your cab's dimensions unless you're building from scratch. | You saw this there?
Eminece Delta 12B at 16 ohms = $84.99
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12-19-2011, 06:36 AM
| | Registered User
Owner, Bill Fitzmaurice Loudspeaker Design | | Join Date: Sep 2004 Location: New Hampshire | | Quote:
Originally Posted by darius8 You saw this there?
Eminece Delta 12B at 16 ohms = $84.99 | With only 2.4mm xmax it's marginal as an electric bass driver. When confronted with the dearth of suitable drivers, and the poor form factor of a 4x12, the OP would be better off with a 2x15, if not a pair of 1x15. |
12-19-2011, 07:09 AM
| | Registered User | | Join Date: Feb 2011 Location: The Abyss of What is my Mind | | One of the reasons why I love TB. Guess I'll be replacing speakers, but in a good way! 
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12-19-2011, 07:21 AM
| | Registered User | | Join Date: Jan 2009 Location: Northern California | | Quote:
Originally Posted by billfitzmaurice With only 2.4mm xmax it's marginal as an electric bass driver. When confronted with the dearth of suitable drivers, and the poor form factor of a 4x12, the OP would be better off with a 2x15, if not a pair of 1x15. | I just learned something, xmax = Voice Coil Overhang.
I'm assuming the higher the xmax the better for bass cabs?
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12-19-2011, 07:55 AM
|  | Registered User | | Join Date: Feb 2005 Location: Seweracuse, NY | | Quote: |
Originally Posted by darius8
I just learned something, xmax = Voice Coil Overhang.
I'm assuming the higher the xmax the better for bass cabs?
| Within reason. It's a balancing act. Large xmax will give you more abilities down low, but makes sacrifices in other areas.
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