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05-18-2010, 01:56 AM
| | Registered User | | Join Date: May 2009 Location: Cambridge, UK | | | Cabinet Upgrade to solve 'farting' problems?
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Hi TB'ers,
After gigging with an Ashdown EB12-180 for a few years, i upgraded to a Marshall MB450H with an MBC115 Cab, which was bought by my family for me for christmas.
When i went to try the half-stack out, everything was fine, but when i got it home and started gigging with it, i noticed that the cab had a really annoying fart and rattle on the low notes, and apparently this is 'the norm' for this rig. It also doesnt seem to cut through our mix
I'm thinking about upgrading the cabinet to something better - which means i'll need a decent 4ohm cab, hopefully with less farting and alot more mids,
or
I can save and buy 2x 8ohm Ashdown cabs, so i can eventually go back to having an Ashdown rig. I miss my Ashdown =[
What would you do? Any cabinet recommendations?
Cheers 
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05-18-2010, 04:28 AM
| | Registered User | | Join Date: Jul 2009 Location: Bristol, UK | | | The impedance (ohms) has very little to do with the farting. Best getting an 8 ohm cab, giving you the option of a second when you want to get louder.
There isn't s specification published on cabs that tells you how low/loud they go before they start farting, especially not the 'watts' rating. Might want to throw a budget up, cause there is a whole world of speakers ahead of the Marshall.
Also, depending on what eq you have, avoid bumping the very bottom, if you have a graphic eq, the bottom slider is often just a fart increaser and doesn't actually change the amount of bottom, due to the limitations of cabinets. | 
05-18-2010, 04:41 AM
|  | Making short stories long since 1977©. | | Join Date: Apr 2010 Location: Loxahatchee, Fl | | The Carvin BRX10.4 Neo is an inexpensive 4ohm cab that can handle lots of power and lows very well. I'm pushing 1200W @ 4ohms to it tuned to drop C and it doesn't even flinch. http://www.carvinguitars.com/bassamp...sscabinets.php
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05-18-2010, 05:05 AM
| | Registered User Proprietor Springvale Studios | | Join Date: May 2008 Location: Ipswich UK | | Well OK Mate! Quote:
Originally Posted by TheRockinRoadie Hi TB'ers,
After gigging with an Ashdown EB12-180 for a few years, i upgraded to a Marshall MB450H with an MBC115 Cab, which was bought by my family for me for christmas.
When i went to try the half-stack out, everything was fine, but when i got it home and started gigging with it, i noticed that the cab had a really annoying fart and rattle on the low notes, and apparently this is 'the norm' for this rig. It also doesnt seem to cut through our mix
I'm thinking about upgrading the cabinet to something better - which means i'll need a decent 4ohm cab, hopefully with less farting and alot more mids,
or
I can save and buy 2x 8ohm Ashdown cabs, so i can eventually go back to having an Ashdown rig. I miss my Ashdown =[
What would you do? Any cabinet recommendations?
Cheers  | Cooper the bass player for Conflict Within who is from Bury St Edmunds has the same setup as you but with the marshall 4 X 10 on top I think he changed the driver in the fifteen inch cab to an eminence but his rig is very loud, sounds great and don't fart: http://www.facebook.com/pages/The-Co...n/203737345784  | 
05-18-2010, 05:35 AM
| | Registered User | | Join Date: May 2009 Location: Cambridge, UK | | Quote:
Originally Posted by Mr. Foxen The impedance (ohms) has very little to do with the farting. Best getting an 8 ohm cab, giving you the option of a second when you want to get louder.
There isn't s specification published on cabs that tells you how low/loud they go before they start farting, especially not the 'watts' rating. Might want to throw a budget up, cause there is a whole world of speakers ahead of the Marshall.
Also, depending on what eq you have, avoid bumping the very bottom, if you have a graphic eq, the bottom slider is often just a fart increaser and doesn't actually change the amount of bottom, due to the limitations of cabinets. | I think you got the wrong end of the stick there, im not talking about the impedance changing anywthing, i just have to have 4 ohms connected to my head.
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Fender P-Bass club #202 - MiM P-Bass Club #68 - MiJ Club #83 - Boss #54 - EHX #197 - LOG #371
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05-18-2010, 05:38 AM
| | Registered User | | Join Date: May 2009 Location: Cambridge, UK | | | is it worth upghrading to an eminence driver?
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05-18-2010, 05:59 AM
|  | Registered User | | Join Date: Mar 2003 Location: Columbus, OH | | | No you don't HAVE to run at 4 ohm. That amp will run two 8 ohm cabs, or 1 4 ohm cab to get the full 450 watts out of it. Your single 4 ohm cab looks matched decently if you don't crank it to 11... | 
05-18-2010, 02:38 PM
| | Registered User Proprietor Springvale Studios | | Join Date: May 2008 Location: Ipswich UK | | Umm! Quote:
Originally Posted by TheRockinRoadie is it worth upghrading to an eminence driver? | Ask Cooper what driver he used in his 1 X 15 cab if you get a 4 X 10 8 ohm cab as well it will be loads better than a single 1 X 15 whatever the impedance of the driver.
In Rock Bass and Drag Racing, there is no substitute for cubic inches.  | 
05-18-2010, 02:42 PM
|  | Less Ebay, more Mel Bay | | Join Date: Jul 2007 Location: Phoenix, AZ | | In the UK, I wouldn't even consider playing anything other than a Barefaced cabinet. Get a hold of Alex and find out what he thinks would work for you and don't look back
He won't say what I will which is that the stuff he's doing blows the doors off of everyone at a significantly lower price generally.
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06-26-2010, 07:32 AM
| | Registered User | | Join Date: Mar 2007 Location: Sussex, England | | | Or you could replace the EEC83 pre amp valve. This amp will make farting noises (on the classic channel) when the valve is on its way out. | 
06-26-2010, 07:39 AM
|  | Registered User | | Join Date: May 2009 Location: Los Angeles | | I would think it was something you ate  | 
06-26-2010, 08:05 AM
| | Registered User Owner, Bill Fitzmaurice Loudspeaker Design | | Join Date: Sep 2004 Location: New Hampshire | | Quote:
Originally Posted by rpsands In the UK, I wouldn't even consider playing anything other than a Barefaced cabinet. Get a hold of Alex and find out what he thinks would work for you and don't look back
He won't say what I will which is that the stuff he's doing blows the doors off of everyone at a significantly lower price generally. | +1. I refrain from recommending specific brands in general because most have glaring engineering and/or construction flaws. Barefaced is a glowing exception. Two thumbs up.
As to the question, a driver change might be beneficial, but the only way to know that is by knowing exactly what driver is in the cab now. Even then a better driver may not help if the cab design is flawed. | 
06-26-2010, 09:21 AM
|  | Registered User | | Join Date: Mar 2008 Location: Sacramento/Pacifica, CA | | Quote:
Originally Posted by RNV | I second this choice. I've got one that I've had going on 2 yrs now and it's been a very reliable cab, as well as sounding very good. 
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06-26-2010, 09:41 AM
| | Registered User | | Join Date: Jul 2007 Location: Dallas, TX | | | The op's problem, (as I see it), is the expectation that a single 15 is enough. It isn't. In this case, he should sell the 4 ohm 15, and get an 8 ohm 4x10, which would leave the possibility of adding another later, if even more volume is required.
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06-26-2010, 10:01 AM
| | Registered User | | Join Date: Aug 2003 Location: Jax, FL | | Quote:
Originally Posted by RickenBoogie The op's problem, (as I see it), is the expectation that a single 15 is enough. It isn't. In this case, he should sell the 4 ohm 15, and get an 8 ohm 4x10, which would leave the possibility of adding another later, if even more volume is required. | I have the 2x10 combo version of the same amp, and the OP would actually be cool getting a 4x10 4ohm cab and still have room for another later, as the Marshall runs its full 450 watts @ 2 ohms. | 
06-26-2010, 10:12 AM
|  | Registered User | | Join Date: Aug 2007 Location: Toronto Ontario Canada | | Quote:
Originally Posted by TheRockinRoadie is it worth upghrading to an eminence driver? | ONLY if the Eminence driver you choose will work well in your cabinet. You could be worse off if it doesn't.
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