One head, 2 cabs = One cab MUCH louder than the other, why?

[David Sutkin]

He was explaining why the two cabs are wildly different, and that what you observed is normal. You're comparing a 612 with a 410... no surprise the 612 is louder, unless you had some ultra efficient super 410.
You need to aim for two similar sensitivity cabs. Best chance to get a good result: use two identical cabs.

There was a correction in the thread ....

The Mesa is a 6x10 and the GK is a 4x12

Thanks for the input.

 

[Lowendtech]

Wait......you have a Fearless 215........and you're not using it?
That's the problem right there.
If it were me, all the other cabs would be in a corner collecting dust.

 

[David Sutkin]

Your old Hartke head had two separate power amps. The blend control adjusted the level between them. The Mesa amp is a single power amp.

I have an Ampeg SVT-4 Pro that I could try using as that's got 2 separate power amps in it I believe

 

[David Sutkin]

Wait......you have a Fearless 215........and you're not using it?
That's the problem right there.
If it were me, all the other cabs would be in a corner collecting dust.

I'ts got an issue right now with the 6" speaker, so it's out of commission until I can get over to Scabbey Road in PA to have Paul fix it. I think I might have blown it out using the Dug Pinnick Pedal a little too aggressively

 

[Kro]

I'ts got an issue right now with the 6" speaker, so it's out of commission until I can get over to Scabbey Road in PA to have Paul fix it. I think I might have blown it out using the Dug Pinnick Pedal a little too aggressively

Oh no, that's not good! Man, if the mid on my Fearless went out, I'd probably take off work and drive it over the next day - I'd feel like a sitting duck without it, despite having a backup rig.

 

[Lowendtech]

I'ts got an issue right now with the 6" speaker, so it's out of commission until I can get over to Scabbey Road in PA to have Paul fix it. I think I might have blown it out using the Dug Pinnick Pedal a little too aggressively

In that case
Twin-City - Radial Engineering

What I use, 2c.

 

[David Sutkin]

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… when splitting signal into two amps

I think I'll be buying one of these by day's end ... Thank you bro.

 

[David Sutkin]

Oh no, that's not good! Man, if the mid on my Fearless went out, I'd probably take off work and drive it over the next day - I'd feel like a sitting duck without it, despite having a backup rig.

That Tech21 DP3X pedal is no joke .... when they suggest tweaking the "low" very cautiously, HEED THAT WARNING!!!

 

[agedhorse]

something like the $30
ART ZDirect 1-channel Passive Instrument Direct Box

or maybe the

Donner Guitar Bass Passive DI Box Instrument to Balanced & Unbalanced Micro Direct Box Pedal


might work for you ?

using 2 'bass' speakers together can get really complicated,

Speaker Placement 201, Part Two: Using Subwoofers -

This has nothing to do with the problems the OP is having.

The DI boxes provide line level signals to mixers. They do not appear to provide speaker level signals.

What sensitivity means is that one of the cabs is louder than the other. That's all. And you already know that. Either run two better matched cabs or use two amps.

Never use a direct box on the speaker output of a class D or bridged amp without verifying with the manufacturer that it's ok. In the case of the Subway amps (and every other amp using this output module) it's NOT ok and could damage either the amp or the device the balanced output is connected to.

Direct boxes provide a balanced mic level signal from an instrument or line level signal. There are a few exceptions that can take a speaker level signal but never from a BTL (bridged) source like the Subway's speaker output.

thanks for the clarification, seems odd ? if they make em for line level why not for speaker level ?

See my above post. The do make them for connection to the output of tube amps which are never bridged and always isolated.

Mesa and GK cabs sound pretty different to me. Is there a chance that the volume difference may not be as huge as you think and one tone is just more prominent?

Quite possibly.

Well, I always like to record the signals together so that I can compare the wave forms to ensure that level and polarity are the same, but the tuner-out of the D800+ may make for a good way to pass the signal to another amp's input assuming it's still at instrument level and is sending before the preamp.

Bass > D800+ > Tuner Out > Amp 2 Input

On the Subway amps, the tuner out is a buffered in phase output of the input, its ideal to split the bass signal pre everything.

When using 2 amps, always verify proper polarity, many amps (and intermediate outputs) do not guarantee polarity is not inverted (as you suggested)

To the OP: have you verified that there is no damage to your 610? A bad driver will cause these symptoms, as will one driver wired out of phase.

With 2 x 4 ohm cabinets, be sure your amp is set to 2 ohm mode.

 

[David Sutkin]

I just bought these ....

They should help with running two rigs ... plus the Morley pedal will finally allow me to start working on "Royal Blood" sh*t

 

[David Sutkin]

This has nothing to do with the problems the OP is having.



Never use a direct box on the speaker output of a class D or bridged amp without verifying with the manufacturer that it's ok. In the case of the Subway amps (and every other amp using this output module) it's NOT ok and could damage either the amp or the device the balanced output is connected to.

Direct boxes provide a balanced mic level signal from an instrument or line level signal. There are a few exceptions that can take a speaker level signal but never from a BTL (bridged) source like the Subway's speaker output.



See my above post. The do make them for connection to the output of tube amps which are never bridged and always isolated.



Quite possibly.



On the Subway amps, the tuner out is a buffered in phase output of the input, its ideal to split the bass signal pre everything.

When using 2 amps, always verify proper polarity, many amps (and intermediate outputs) do not guarantee polarity is not inverted (as you suggested)

To the OP: have you verified that there is no damage to your 610? A bad driver will cause these symptoms, as will one driver wired out of phase.

With 2 x 4 ohm cabinets, be sure your amp is set to 2 ohm mode.

Thank you for this information.

 

[mrjim123]

Any recommendations for a good "splitter" pedal for running two separate rigs with one bass?

I hope you're wearing ear plugs if you need that kind of volume. Seriously.

 

[aprod]

You must be deaf running all those speakers in a rehearsal space.

 

[SLO Surfer]

be sure your amp is set to 2 ohm mode.

This is what I was going to point out since you're running two 4ohm cabs

 

[SactoBass]

Any recommendations for a good "splitter" pedal for running two separate rigs with one bass?

Google "Lehle splitter"

 

[David Sutkin]

This isn't about sheer volume, it's more about the tone I get from combining two different sounding cabinets and also not having to crank the amp to where it's start to break up a bit when I do need that volume boost ... Using 2 cabs, or two rigs allows me to keep my sound super clean and add if I want that "overdriven" sound, I have effects for that.

I enjoy the tonal color combination of both cabinets together as they vary greatly and combined have the sound I really like.

 

[David Sutkin]

Google "Lehle splitter"

Just bought one, thanks.

 

[David Sutkin]

This is what I was going to point out since you're running two 4ohm cabs

Set the amp to 2ohms even if the cabs are only daisy chained?

 

[SactoBass]

Just bought one, thanks.

Excellent choice! Lehle makes the best splitters (IMO).

I didn't read every post in this thread, so I'm guessing you plan to use two separate amps: one amp going into your 610 cab and one amp going into your 412 cab. If that is what you plan to do, then I'd say you are going to have one heck of a nice setup! You will be able to dial in different tones for each rig and play through both of them simultaneously. Saweet!!!

 

[SactoBass]

Set the amp to 2ohms even if the cabs are only daisy chained?

Yes. When using a single amp, the amp doesn't care whether the two cabs are both plugged in separately into the back of the amp or if the cabs are daisy chained. Both scenarios present a 2 ohm speaker load to the amp when using two 4-ohm cabs.