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Which bass head for which bass cab

Dec 12, 2019
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Disclosures
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Hi yáll:
Now Im the proud owner of:
a) GK 400 RB mark IV +
1 Ashdown ABM-600 EVO IV Bass amp

c) 2 x GK RBX410 cabs
d) Ampeg 810 bass cab
e) EBS classic line 810 cab

Is there any way I can pair them all without blowing the amps or speakers regarding Ohms/impedance etc.....?
I simply cant figure it out.

For the time being Im using 1 amp for each of the 810 cabs - simply by using af splitter cable from my Tech 21 DP pedal in order to give input to each bass head - that then drives one 810 cab each....
Any other suggestions?

Thanx you guys in advance
 
And would it do me any good to get an EBS HD 350 basshead
Specs:
EBS HD360
  • Input Impedance 2 Mohms
  • Frequency Response 20 - 20.000 Hz
  • Maximum Compression Ratio (Compressor) 3:1
  • Tone Controls
    Bass +/-15 dB @ 100 Hz
    Middle +/- 12dB @ 50 - 3.000 Hz, Q=0.5
    Treble +/- 15 dB @ 4 kHz
    Bright -0/+20 dB @ 10 kHz
  • Drive Gain Range 0 - 30 dB
  • Drive Type Solid State
  • Speaker impedance 2 - 8 ohms
  • Continuous Output Power
    Dynamic Output Power 360 W RMS @ 2 ohms,
    Continuous Output Power 300 W RMS
  • Dimensions (W x D x H) 19" x 13" x 2U (48cm x 33cm x 8.9cm)
  • Weight 9 kg / 20 lbs
 
Be sure the 4x10 pair doesn't sound or perform "better" than one of the 8x10s.

You could have a jumbo size modular rig if you chose to let one of the 810 cabs go.

At least you have a "small" cab option when just a 410 can do.
 
Be sure the 4x10 pair doesn't sound or perform "better" than one of the 8x10s.

You could have a jumbo size modular rig if you chose to let one of the 810 cabs go.

At least you have a "small" cab option when just a 410 can do.
You are absolutely right... still have to figure out which one of the 810s i have to let go than.... I do like the Ampeg cab, although its a bit "muddy" IMO
 
So should i get rid of the EBS or the Ampeg - let me hear your opinion..
It doesn't matter which cab I like best...I won't be playing through your gear, and my tonal preferences and performance requirements are most likely different than yours. I might choose to sell all of your gear and buy something totally different.

Asking someone to choose the cab that you think sounds best is about the same as asking the someone to choose your favorite food (IMHO ridiculous :wacky:). Since you have the gear already, it's best to do your own tasting, and make your own decision. Try all cabs individually with both amps and keep the combinations you like best.

Consider factors such as sound quality, sized & weight (portability), volume, modularity, etc. Think about how you will use the gear and which factors will be most relevant.

Factors such as power handling, sensitivity, and impedance are also important to consider. Impedance is already a factor because your amps are rated for 4 ohms minimum. This means you can only run one 4 ohm cab or two 8 ohm cabs.

Power handling is probably not a big deal currently because both of your amps are fairly low powered. But if you buy a high-powered amp in the future, this is a very important factor. What you may not know is the RMS power rating on most cabs is actually the thermal rating, I.E. how much heat the drivers can dissipate. With bass you need to know mechanical power handling below 100hz can be lower than the cabs RMS power rating. So if you like to run big fat lows, it's possible to blow drivers with less than their rated power.

Sensitivity tells you have loud a speaker will play, typically with one watt, measured at a distance of one meter. The SPL goes up by 3dB every time you double power. For example, 1,2,4,8,16,32,64,128,256,512. If your amp makes 512W you double the power 9 times from 1W (count the bolded numbers). Multiple the power doublings by 3db. 9x3=27dB. This is the decibel change that occurs when you increase the power from 1W to 512W. The Sensitivity rating of an Ampeg 810e is 100dB 1W/1m. If we add the decibel change the results from increasing the power from 1W to 512W, the answer tells us how loud the 810e can play with the available power. 100+27=127dB

One possible issue is Sensitivity is sometimes expressed at 2.83V. Here's the problem 2.83V into an 8 ohm load results in 1W and 2.83V into a 4 ohm load results in 2W, so it's not a fair comparison. In order to accurately compare, you need to convert the 2.83V at 4 ohm rating to the 1W/1m rating. You can do this by simply subtracting 3dB from the 2.83V at 4 ohm sensitivity rating.

For example:
[Sensitivity 100dB 2.83V/1m at 8 ohms] = [Sensitivity 100db 1W/1m] no conversion required at 8 ohms
[Sensitivity 103dB 2.83V/1m at 4 ohms] = [Sensitivity 100db 1W/1m] at 4 ohms subtract 3dB for the 1W/1m rating

Keep in mind amp/cab pairings can sometimes result in serendipity that you would not expect. So you may find that you like the Ampeg 810 better with one amp and the EBS 810 better with the other amp.

Good luck!
 
So should i get rid of the EBS or the Ampeg - let me hear your opinion..

Large Heavy Speaker Cabs have only a small selective group of buyers these days [even the 410's are 90lbs each]
the Ampeg would be easiest to sell [unless in Europe]

According to my info the 410RBX Cab's are 8 ohm each so 4 ohm with both. The 8x10 are 4 ohms each.

You need 1 amp that handles 4 ohm minimum and another amp that handles 2 ohm [as you know] for using 2 x 410 and 2 8x10. So yes EBS or something similar with 2 ohm capability will work. I would consider 300 watts minimum for 16x10" speakers.

But having just 2x410 and 1 8x10 [or 2 8x10] hooked up should suffice and leave other speaker at home for backup.

I get it my first rig for gigging was an Ampeg SVT with Ampeg 8x10 and a Cerwin Vega 18" Reflex Cab [Guitar Player had Dual Marshall Stack's]
 
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