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Post by shreder75 on Jan 20, 2006 11:37:56 GMT -5
see, I remember stuff! just don't ask me what I had for breakfast yesterday...that kinda crap I can't remember...weird
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Post by DonaldDemon on Jan 20, 2006 12:05:10 GMT -5
I always bring 2 cabs to bigger shows or special shows.. it just LOOKS COOL and the sound on stage is great, like Hacksaw said more coverage. Look at the NYE video I posted, thats all stage volume from those 2 cabs. If you walked out further I'm in the PA too, but the sound on stage is fantastic. You sound better, you look cooler which means you'll play better.  It definitely does look cooler,that's for sure. If I had 2 4x12's I would bring both but because the rivera cab is so strange it would only be 2 extra 12's and they are all V30's. I bet the sub would sound sick though:) It can get overbearing real fast if you don't watch it. I also keep my Bogner at home to bring along to gigs and the Rivera stays in the practice room. Maybe I will try hooking both cabs up before the show to see how it sounds:) I just wish I was sure of the ohmage!! If i blew this head the day before the show I would probably run into the middle of traffic and head butt an on-coming car! How do you guys set up both cabs, next or each other or as a full stack? |
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Post by DonaldDemon on Jan 20, 2006 12:42:58 GMT -5
I just talked to Scott and he said that it would not be a good idea to use both cabs if the ohms are mismatched:(. The lower ohm (Rivera 8 ohm) would actually get 2/3 of the volume and the 4x12 would only get 1/3. I guess I'll just have to make do with one cab, unless....I buy a cab from guitar center and return it in a week:)
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Post by Dirrty Craig on Jan 20, 2006 13:32:48 GMT -5
I use 2- 16 ohm cabs and run the head at 8 ohms, so I don't have that issue. I like them side by side. It looks cooler and sounds great. I hate anything ear level.
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Post by shreder75 on Jan 20, 2006 13:41:48 GMT -5
that's why scott recommends you get yer cabs @ 16ohms...easier to match multiples that way
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Post by DonaldDemon on Jan 20, 2006 14:34:21 GMT -5
that's why scott recommends you get yer cabs @ 16ohms...easier to match multiples that way Looks like I need to sell the Rivera cab and get me a Splawn cab:) |
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Post by shreder75 on Jan 20, 2006 15:03:30 GMT -5
that's why scott recommends you get yer cabs @ 16ohms...easier to match multiples that way Looks like I need to sell the Rivera cab and get me a Splawn cab:) it's for the best, my friend  |
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Post by Hacksaw on Jan 20, 2006 17:50:14 GMT -5
I use 2- 16 ohm cabs and run the head at 8 ohms, so I don't have that issue. I like them side by side. It looks cooler and sounds great. I hate anything ear level. Yeap.. same here, two cabs side by side.. 16 ohm, 8 ohm on the head. does look cool and sound cool! I dont like ear level either. if they where ear level I would buy some weber beam blockers. Don if you are unsure what is going on, dont do it. since the amps have great warranty and thinking of that, I would run as perfect as you could. that creates longevity. and keeps you in warranty probably Do the math for ohms, find a website that does impedance information, you will learn it, if you are unsure. DONT MESS WITH IT. if you must know, get a ohm meter, tie the cabs together. measure it, see what you get. JUST FOR THOUGHT...Cause if your not sure, dont do it... And scott is right about the power thing, ( we all knew that about scott!) Some people would actually like that, the 8 ohm cab will exibit speaker break up sooner than the 4x12, the 4x12 would not be driving the speakers as much and would add a clean signature. its amazing what musicians will try. especially guitar players! just like the speaker matching going on theses days, wattage with the V-30's and the G12H speakers a 60 watt and a 30 watt. Or the G12T-75's with V-30's in cab. experimenting can have very good results. Ok sometimes bad ones too hahah.. POP goes a speaker.. but its very cool we try theses things. just dont experiment with your #1 amp! |
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Post by jimbax on Jan 20, 2006 19:17:28 GMT -5
I use 2- 16 ohm cabs and run the head at 8 ohms, so I don't have that issue. I like them side by side. It looks cooler and sounds great. I hate anything ear level. Yeap.. same here, two cabs side by side.. 16 ohm, 8 ohm on the head. does look cool and sound cool! I dont like ear level either. if they where ear level I would buy some weber beam blockers. Don if you are unsure what is going on, dont do it. since the amps have great warranty and thinking of that, I would run as perfect as you could. that creates longevity. and keeps you in warranty probably Do the math for ohms, find a website that does impedance information, you will learn it, if you are unsure. DONT MESS WITH IT. if you must know, get a ohm meter, tie the cabs together. measure it, see what you get. JUST FOR THOUGHT...Cause if your not sure, dont do it... And scott is right about the power thing, ( we all knew that about scott!) Some people would actually like that, the 8 ohm cab will exibit speaker break up sooner than the 4x12, the 4x12 would not be driving the speakers as much and would add a clean signature. its amazing what musicians will try. especially guitar players! just like the speaker matching going on theses days, wattage with the V-30's and the G12H speakers a 60 watt and a 30 watt. Or the G12T-75's with V-30's in cab. experimenting can have very good results. Ok sometimes bad ones too hahah.. POP goes a speaker.. but its very cool we try theses things. just dont experiment with your #1 amp! I think Scott was talking about the cabs drawing uneven ohm loads from the head and stressing the output transformer (when you connect a 16 and 8 ohm cabs together) don't confuse the amp now! |
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Post by Hacksaw on Jan 20, 2006 19:25:24 GMT -5
Yeap.. same here, two cabs side by side.. 16 ohm, 8 ohm on the head. does look cool and sound cool! I dont like ear level either. if they where ear level I would buy some weber beam blockers. Don if you are unsure what is going on, dont do it. since the amps have great warranty and thinking of that, I would run as perfect as you could. that creates longevity. and keeps you in warranty probably Do the math for ohms, find a website that does impedance information, you will learn it, if you are unsure. DONT MESS WITH IT. if you must know, get a ohm meter, tie the cabs together. measure it, see what you get. JUST FOR THOUGHT...Cause if your not sure, dont do it... And scott is right about the power thing, ( we all knew that about scott!) Some people would actually like that, the 8 ohm cab will exibit speaker break up sooner than the 4x12, the 4x12 would not be driving the speakers as much and would add a clean signature. its amazing what musicians will try. especially guitar players! just like the speaker matching going on theses days, wattage with the V-30's and the G12H speakers a 60 watt and a 30 watt. Or the G12T-75's with V-30's in cab. experimenting can have very good results. Ok sometimes bad ones too hahah.. POP goes a speaker.. but its very cool we try theses things. just dont experiment with your #1 amp! I think Scott was talking about the cabs drawing uneven ohm loads from the head and stressing the output transformer (when you connect a 16 and 8 ohm cabs together) don't confuse the amp now! I knew I shouldnt have answer this question... 2 ohms isnt going to stress it, if it was a wider seperation I would agree. overloading the amp with high impedance will spike arc a transformer, etc.. etc.. 2:1 is max. just think when freq hits the speaker the impedance changes any way. DC resistance is moving all over the place.... so techically what is acceptable variable % in impedance? but here I go again.. I think I will leave this subject alone. Sorry all... |
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Post by Axemane on Jan 20, 2006 19:28:51 GMT -5
 ;D ;D ;D ;D My current set-up.Older Quick Rod on left and Splawn modded plexi on the right.Plexi is for back up. |
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Post by n0fx on Jan 20, 2006 19:31:37 GMT -5
Well as a general rule your always safer as you go up in impedance not down.
If he's talking about pararalleling a 16 ohm load and 8 ohm load he will be fine.
When in doubt measure the pararllel impedance with your DVM and set the
imp selector on the amp to the closest match.
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Post by Hacksaw on Jan 20, 2006 19:31:50 GMT -5
Right on! Here is mine with my home built jtm45  |
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Post by Axemane on Jan 20, 2006 19:34:33 GMT -5
Sweet dude. Did you build the JTM45 yourself?
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Post by Hacksaw on Jan 20, 2006 19:38:44 GMT -5
Sweet dude. Did you build the JTM45 yourself? Yes, Thats my build, after long weekends of sniffin solder :-) I bought the kit from tedweber.com then replaced the power supply with a james audio p.s., tweakin bias, and its running nicely, Using EL34s in it. I use that A/B box on the lower left to jumper the bright and the norm channels together :-) was a fun project. took a while though. |
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