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Problem: Ampeg 6X10 --> replace w/ JBL's?

A

Audiomaniac

Nov 28, 2008
7
0
#1
Hi. I own an ampeg 610 cabinet with an SVT classic head. When the gain is at about 3-4 and the master is at about 4-5, the cabinet starts farting, the sound doesn't sound clean, and it sounds like the cabinet can't keep up with the power. I've brought this issue to a number of people, and after multiple tries of troubleshooting, we agree that its the cabinet that's the problem. They say that the speakers in the cabinet aren't powerful enough to handle everything the head is throwing at it. I've been told that there are a couple of things i can do to fix this. One is to add a 15 inch cabinet with the 610. I don't really want to do this because it means i'd have to lug around another cab. The other suggestion was to replace the speakers inside the cab. I was wondering if this would fix the problem. I was told JBL's would do the trick, and i was wondering if possibly a lower end model would also fix the problem. I don't know and can't find the rating for the ampeg speakers or the rating of any replacement speakers, so i don't know what or how to compare. Basically, I want to know how much better a speaker would i need for my cabinet to keep up with my head? Thanks. :)
 
#3
Hi there mate,

That sounds a little fishy to me actually. I use a 4x10HLF with a 500 watt head (maybe a rough-ish gauge with a 300 watt SVT tube head) and I've use it past half+ that, and I've never encountered farting before, so 300 watt Ampeg with the 6x10 version of my cabinet a) probably sounds beastly :ninja: and b) should work without any problems.

If you don't mind me asking, how do you set the EQ on your head?
 
#4
Audiomaniac said:
I was told JBL's would do the trick
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JBL no longer manufactures musical instrument drivers, and they never made an electric bass ten. I'd say you're getting advise from the wrong sources.:eyebrow:
The tens used by Ampeg are well suited for bass, so if one 6x10 isn't enough you probably need two. But that brings up the question of why you need to be that loud. The PA should be handling the room, your amp only needs to provide adequate volume for the stage. A 6x10 should be enough.
 
#7
My tech was head tech for the 70s- 80s band Foreigner. Rick Wills the bass player had the speakers in his SVT cabs replaced with JBL 10s.. In theory you would think it would not sound any good.. but up close it was wonderful... He used these huge Altec poweramps.. I forgot what preamp was used back then... I thought it was an old F2B but i wont swear to it.. And I dont think JBL makes 10 for instrument any longer..
 
#12
I'm looking at the wattage rating of my cab now, and it says 600 watts, so i'm assuming each speaker is 100 watts. Most of the speakers i'm looking at, including the eminence speaker, are rated at 200 or 300 watts, putting the total at 1200 or 1800 watts. My amp head is 300 watts of tube power. Is it bad for it to be with a 1200 or 1800 watt cab?
 
#14
sockdeluxe_mike said:
Aren't Eminence really good Ampeg replacements?
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Yes, they are. So good that Ampeg has had their drivers made for them by Eminence since the 70's.
My amp head is 300 watts of tube power. Is it bad for it to be with a 1200 or 1800 watt cab?
Click to expand...
No. But the wattage rating of a driver has no bearing on how loud or low it will go, so don't go changing drivers based on power ratings. In fact, don't even think about changing drivers unless you are either very well versed in loudspeaker design theory or have advise on specific drivers from someone who is. That leaves out whomever recommended to you JBLs. And the B102 would probably not work as well as OEM Ampeg drivers.
My tech was head tech for the 70s- 80s band Foreigner. Rick Wills the bass player had the speakers in his SVT cabs replaced with JBL 10s..
Click to expand...
Those would have been K 110s or E 110s, which were better than what Eminence was producing during that time period, but don't measure up to what they make today, either under their own name or for OEM.
 
#15
Is the bass knob on the eq turned up very far? Thats not healthy for any cab. Try a flat EQ, maybe turn down the treble if you really want to. Often we turn the bass up too high because at the cab we can not hear it. Also, maybe a 30Hz filter in the effects loop would help.

Just some ideas.
 
#17
Sorry jon. I was replying to the post above you in my last post.

For your post- When I play I usually play completely flat. If I turn down the bass below flat the problem goes away. But I want to play with at least a flat EQ which is why I want better speakers. Now I just have to find the right ones. :hmm:

Thanks for suggestion though :)
 
#18
Audiomaniac said:
If I turn down the bass below flat the problem goes away.
Click to expand...

Maybe you got the wrong cab... Maybe replacing your speakers will solve your issues and maybe not. I've noticed quite a few posts from other SVT guys on this forum that didnt dig the way either of the HLF cabs worked out with their SVT's either. (although some seem to like the pairing)

Before you spend any more money on yours, you might research the Berg NV-series cabs, you'll find quite a few SVT guys on this forum that really like how they work together with a live band.

If your interested, check out some of these threads:
http://www.google.com/custom?domain...;S:http://www.talkbass.com;LP:1;FORID:1&hl=en
 
#20
Hi.

Are You playing a 5er (low B or lower)? If so, the added 18" or 15" would be my remedy.

If not, are You sure there isn't one or more blown, or just plain tired, speakers in your cab. The easiest way to test it would be a test signal through Your rig. An iPod with a few test signals works just fine.

Regards
Sam
 

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