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How to connect an ampeg 8x10 cab to an ampeg svt 7???

Discussion in 'Amps and Cabs [BG]' started by Eedwards7891, Sep 27, 2018.

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  1. Sep 27, 2018 #1
    Eedwards7891

    Eedwards7891

    Dec 11, 2017
    Pardon my lack of knowledge, talkbass gurus and wizards.

    I recently acquired an svt 5 pro with a hartke cab . It sounded AWESOME, but for the type of drop tuning we play in, I couldn't get the volume from the 4x10 due to it only having 400w.

    I traded STRAIGHT ACROSS for an ampeg svt 7 pro with an ampeg 8x10 (Gods be praised!) .

    I am curious ,what is the optimal way to connect it to the amp to the cab? I have never ran something mono bridged, and I don't know how to do it without damaging the amp. I have read the entire instruction manual, but it wasnt very clear on how to specifically do it.

    Any and all help is appreciated !
     
  2. Sep 27, 2018 #2
    Wasnex

    Wasnex

    Dec 25, 2011
    You just need to run a single speakon cable from the amp to the 810. The speaker outs on the amp are wired in parallel so it doesn't matter which one you use. See page 7 of the attached manual.

    The 810 is 4ohms. The SVT7-Pro can develop 1,000 watt at 4 ohms. Do not connect any more speakers as the 7-Pro is not rated for lower than a 4 ohm load.
     

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  3. Sep 27, 2018 #3
    Eedwards7891

    Eedwards7891

    Dec 11, 2017
    Thank you .
     
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  4. Sep 27, 2018 #4
    JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    The SVT 7 Pro doesn't have separate power amps, so it's always mono.
     
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  5. Sep 28, 2018 #5
    Eedwards7891

    Eedwards7891

    Dec 11, 2017
    Thank you . So, at any given time I use this amp, it's always pushing 1000w at 4 ohms? I was reading something in the manual about being 600w at 8 ohms . That's what was confusing me.

    The way I interpret that is that I should never connect anything less than a 4 ohm load to this cab . Is that correct?
     
  6. Sep 28, 2018 #6
    floridagatorfan

    floridagatorfan

    May 22, 2011
    Athens Alabama
    yes never go below 4 ohms with the 7 pro. higher than 4 is ok though
     
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  7. Sep 28, 2018 #7
    Eedwards7891

    Eedwards7891

    Dec 11, 2017
    So, in theory, if I wanted to connect , say, a 1x15 to this, while running something else , I would need two 8 ohm cabs , a 4 and an 8, ect?
     
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  8. Sep 28, 2018 #8
    JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    Two 8 ohm cabs. A 4 and 8 ohm cab together will result in 2.67 ohms, which is out of safe operating range.
     
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  9. Sep 28, 2018 #9
    JeezyMcNuggles

    JeezyMcNuggles Supporting Member

    Feb 23, 2018
    Santa Maria, CA
    I suck, but nobody really notices
    Yeah, but the cab you are pushing is a 4ohm cab, so the power will be maxed with the 810. One 4ohm cabinet = One 4ohm load. Just dont worry about it, and run the one cable.
     
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  10. Sep 28, 2018 #10
    Wasnex

    Wasnex

    Dec 25, 2011
    When you connect two cabs with the same impedance in parallel, just divide the impedance by two. So if you have two 8 ohm cabs: 8/2=4 ohms. You can run two 8 ohm cabs with your SVT7-Pro.


    If you connect two cabs with different impedance in parallel, use this formula where Z is impedance:
    upload_2017-12-27_3-14-46-png-png.png
    for example if you have an 8 ohm cabinet and a 4 ohm cabinet.
    upload_2017-12-27_3-24-31-png-png.png

    Since 2.67 ohms is lower than 4 ohms, this combination of speakers should not be used with your SVT7-Pro.
     
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