Adding a 2nd cab to SVT7pro/sVT410hlf

[phatbass1]

Guys,
I love my SVT7Pro/SVT410HLF Rig but I want to add a second cabinet. I have a SVT210 that I could use but that will lower the total ohm load to 2.7 ohms. The SVT7Pro says it only is good down to 4ohms. I already tried it and it sounded great! What will happen if I use it long term?
I like it because I can hear myself better on stage with the two cabs stacked.
Anybody using the SVT7Pro with less than a 4 ohm load?

 

[Bass_Pounder]

Running the amp below it's rating will eventually lead to the amps death.

 

[RoadRanger]

Yup, it'll work great until it doesn't. OTOH back in the bad old days I ran 2.6 ohms all the time with the well built solid state amps of the day (three 8 ohm 15's). It all depends on how lucky you're feelin' ? The ideal would be an 8 ohm 4x10 and a 16 ohm 2x10 ...

 

[Dave W]

Definitely a bad idea

 

[grenadilla]

Make a series cable for your speakers. 4+8ohms will total about 12ohms and your amp won't burn up. Check phasing to see if the cones move together. Use 14 gauge or 12 gauge speaker wire. Your amp will thank you.

 

[samson3382]

Make a series cable for your speakers. 4+8ohms will total about 12ohms and your amp won't burn up. Check phasing to see if the cones move together. Use 14 gauge or 12 gauge speaker wire. Your amp will thank you.

Yeah but at 12 ohms what's the amp putting out?

 

[samson3382]

That 410 is a loud, bass heavy cab. I would say if you feel it's not enough, you either need to somehow elevate it to ear level, or maybe it's not the cab for you. A pair of vertically stacked, 8ohm, 210's might be worth looking into. That or a pair of 8ohm 410s.

 

[Tractorr]

Yeah but at 12 ohms what's the amp putting out?

Somewhere around 400 or so watts, but it will still being putting out something. Given all the problems with the 7Pro that is definitely an amp I would not mess with.

 

[samson3382]

Somewhere around 400 or so watts, but it will still being putting out something. Given all the problems with the 7Pro that is definitely an amp I would not mess with.

Not personally familiar with it. I bought and returned an svt6 within a day years ago.

 

[Tractorr]

Not personally familiar with it. I bought and returned an svt6 within a day years ago.

I have only played one in a store but they are notoriously problem prone amps (do a search there are tons of threads). They are up to like the 7th or 8th revision on that amp to work out the problems. With an amp that is that problem prone I would not risk for a second running past the stated parameters.

 

[midichlorine]

yep, these amps sound great!
yep, these amps have a tremendous failure rate!
yep, if 1000 watts into a super ported 410 isn't loud enough, then!!!!!!!

 

[Thundar]

Yeah, that 7 Pro is not the head I would want to be stressing with a load under 4 ohms. Glad I sold mine.

 

[rodl2005]

Extremely bad idea.

Not only for the amp but also you'd be very close to blowing that li'l 210s speakers to shreds if you turn up or run the bass eq up.
As stated-that 410 is VERY low tuned and won't cut thru well under many band situations.
2 x 8 ohm 410s or an 810 or raise your 410hlf up to ear level.
Don't run the 7 pro under 4 ohms unless you want problems

 

[bassguppy]

I'm glad you love your 7PRO. My 7PRO that's been running hard for almost 3 years but you should not drop below the stated minimum 4 ohm load. I've read all the negative comments regarding this amp but made the decision to give it a shot and I have never regretted it.

 

[phatbass1]

Thanks Everyone,

Your opinions please...
I have the following gear and like that old school thick, warm fat sound. What combination would you suggest to get me there:
1. Music Man Stingray 4 Classic
2. Fender Geddy Lee Jazz
3. Ampeg SVT7Pro (Good down to 4 Ohms)
4. Ampeg SVT410HLF (4 Ohms)
5. Ampeg SVT410HE (8 Ohms)
6. Ampeg SVT210HE (8 Ohms)
7. Ampeg B2RE

I'm thinking:
SVT7Pro
SVT410HE/210HE Stacked (4 Ohms Total)
Stingray
What about flat wound's?

Again, I like to stack (2) cabs so I can hear myself better on stage. Can't stack anything with the SVT410HLF but I know it sounds great in the house as a stand alone cab paired with the SVT7Pro.
Do you think the SVT7Pro/SVT410HE/SVT210HE will sound as good as the SVT7Pro with just SVT410HLF?

Bill

 

[Bass_Pounder]

I'm thinking:
SVT7Pro
SVT410HE/210HE Stacked (4 Ohms Total)

The problem with that setup is that the wattage gets divided evenly between the two cabs.

That means the speakers in the 2X10 will be getting TWICE the wattage as the speakers in the 4X10.

The only way to make a 2X10+4X10 cab combo work is to have the 2X10 be twice the impedance of the 4X10 (ie: 8 ohm 2X10+ 4 ohm 4X10, or a 16 ohm 2X10 + 8 ohm 4X10)

 

[RickenBoogie]

+1 either use a pair of identical cabs, ie: 2x SVT410he, or go with a bigger 4 ohm cab, ie: SVT810.

 

[phatbass1]

+1 either use a pair of identical cabs, ie: 2x SVT410he, or go with a bigger 4 ohm cab, ie: SVT810.

How about (1) SVT410HE and (1) SVT15E...both 8 ohms totaling a 4 ohm load?

 

[Bass_Pounder]

How about (1) SVT410HE and (1) SVT15E...both 8 ohms totaling a 4 ohm load?

No different...........

A 1X15 is about equivalent in output to a 2X10, so mixing it with a 4X10 produces the same type of power imbalance.

A 1X15 cannot handle the same power, nor match the output of 4X10.

Now add to that the possible problems involved in mixing speaker sizes.............

Stick with two matching cabs.

 

[CL400Peavey]

How about (1) SVT410HE and (1) SVT15E...both 8 ohms totaling a 4 ohm load?

Horrible pairing.