GR Bass Gear Questions?

[ByrChiPro]

Hi, I was wondering what drivers are used in the 210 and 212 cabs? Also what kind of tweeter is being used? Thanks

 

[jake bassist]

Hi - This is the tried and true ICE 800w module.

Hi,
Which exact model? I am not familiar with any ICE 800. The closest one is ICE 700ASX.

 

[jfiles]

Hi,
Which exact model? I am not familiar with any ICE 800. The closest one is ICE 700ASX.

Hi Jake - Yes, I have been swamped and was in a hurry when I wrote last. You have the correct module, I was thinking ONE800 when I mistyped.

 

[RickyVT]

Do you need two cabinets for a dual 800/1400 or can you connect just one?

 

[jfiles]

Hi RickyVT,

The DUAL is available in either the 800W single amplifier model (DUAL800) or the 2x700 double amplifier model (DUAL1400). They are identical otherwise. Neither of these amplifiers require having a speaker connected.

The DUAL800 has two parallel Combo-SpeakOn jacks on the back (either or both can be used) connected to a single that amplifier will produce 800W RMS down to 2.67-Ohms. The DUAL1400 has two Combo-SpeakOn jacks on the back - each one connected to it's own 700W RMS (down to 2.67-Ohms) dedicated amplifier. The advantage of the DUAL800 is that it has one power amplifier (so it is a bit cheaper) and works well if you are only going to use one cabinet or a pair of cabinets where the total load is at least 2.67-Ohms; could be 2 x 8-Ohm cabs, 1 x 4-Ohm cab or 1 x 8-Ohm + 1 x 4-Ohm (which is the 2.67-Ohm load) cabinet pair.

The advantage of the DUAL1400 is that it can drive twice as many cabinets; could be 4 x 8-Ohms cabs (total load of 4-Ohms per side/amplifier), 2 x 4-Ohm cabs (4-Ohms per side/amplifier) or 1 x 8-Ohm + 1 x 4-Ohm cabinets (2.67-Ohms per side/amplifier). The loads per side do not need to match, so you could run 1 x 4-Ohm on one side and a 1 x 8-Ohm on the other side if you prefer. The direct answer to your question is, you can get the DUAL1400 and just drive one cabinet for smaller gigs, then take a second cabinet and drive them both at a larger gig.

Again, these amplifiers do not have to ever have a speaker hooked up, so you can unplug the speaker cabinet and by using the Aux In (with sound source) and the Headphone Out have a practice amplifier setup when needed.

For most people the DUAL800 is sufficient (that is what I use) because most times a single cabinet is what is needed. I have a GR112 (8-Ohm) and a GR210 (8-Ohm) so I can use either one for a smaller gig or take the pair on a bigger gig and it works great. If you need more coverage (say, a pair of GR410 cabinets) where the speaker cabinets are 4-Ohms each, then the DUAL1400 is the one to get.

I hope this was explained clearly, but if not, please ask more questions or send me an email/call and I will be happy to clarify. Thanks! John

 

[RickyVT]

Very clearly, thanks! Now I need to decide which one...

 

[Souls930]

What is the difference in the 112 cabinets?

 

[jfiles]

Hi,

If you are asking about the difference between the CUBE112 and the GR112H, there are a few differences. From a use perspective, the CUBE112 is designed to be as compact and lightweight as possible (while still achieving great performance standards). The GR112H is a larger cabinet that is designed for great sound, not regarding the size or weight, in its performance class. Here is a simple comparison chart showing the major differences:

CUBE112
Dimensions: 17"H x 15.75"W x 13.75"D (3681 cubic inches)
Weight: 24.25 Lbs.
Tweeter/Control: 3-Position Switch for Level Control
Freq. Resp.: 40Hz ~ 18kHz

GR112H
Dimensions: 15.25"H x 20"W x 13.75"D (4,194 cubic inches)
Weight: 28.25 Lbs.
Tweeter/Control: Larger/Better Tweeter & Variable L-pad for Level Control
Freq. Resp.: 38Hz ~ 22kHz

So, in short, the GR112H has a broader frequency response (more top-end and more bottom-end) & has a better tweeter & level control. The CUBE112 is smaller, lighter and a bit less expensive ($100 street price). If you are looking for the smallest package with the least weight and don't find that you need the frequency extremes, then the CUBE112 is a great choice. If you still want a small, light cabinet, & don't have size restrictions (this cabinet is about 14% larger) but are a bit more needy on the top and bottom, want more tone sculpting control and budget is secondary, then the GR112H is the best choice.

I have a CUBE112 that I use everyday and I like it because of its weight and size. I like the sound of the GR112H a little more, but my use of the CUBE112 has a size and weight priority.

If you have other questions, please let me know and I will be happy to answer them.

 

[Souls930]

My concern with the 12" speakers is that sometimes they sound "boxy". So you are thinking that the GR112H has a fuller sound? I have a one 800 that I bought off of a guy here. Is the warranty transferable? Do you ever run promos on your equipment?
Frank

 

[jfiles]

Yes, I would characterize the GR112H as a more open presentation, with a bigger sound. I think reflects your suggestion of sounding boxy, although I wouldn't really characterize the CUBE112 as bpxy, however, there is a difference with the GR112H. The warranty is not transferable, but the good news is that these amps are very, very reliable. We have never had a sale or a promotion, so I would have to say no, at this time. That doesn't rule out the future, but I don't know under what circumstances that would be. Perhaps if we are closing out older gear and we have surplus, but presently, it has been a challenge to get all of the GR Bass gear that we need. Thanks!

 

[RickyVT]

Hi, this is a two-channel ICE module, like the one used in the ONE1400 amplifier. This has separate input levels and separate output volume for each channel. Think of it as a stereo amplifier unit. So, if you had a Ric or an Alembic and wanted to run it 'stereo' (each pickup having its own level control) and had a 1-15" for the neck pickup and a 1-12" for the bridge pickup, this would be ideal.

Now, if you wanted to run your bass 'mono' (the same basses but using a single/mono pickup output), you could get the ONE1400 and have a single input channel with far more EQ shaping ability, and would still have two independent output channels (700w RMS each) with level controls. You could then drive (4) 8-Ohm cabinets (two per side), or have two different types of cabinets/efficiencies and blend the volume of the two cabinets.

There are all sorts of other possibilities for the PureAmp 700x2 as well. If you play electric bass & Moog/key bass, you can use one channel of this amp for your electric bass with a conventional bass guitar speaker (let's say a GR210) and the other channel with your key bass, but use a PA type speaker for the synth. Or double as an electric bass/upright bass with different speakers. The upside is the flexibility of levels and using two speakers for unique applications. The downside is the loss of EQ control and you have to carry two speakers.

If you don't have to have two independent input channels (not sure what your needs are) I would recommend the ONE1400. You have a single input channel, but you have a stereo power section (which shares the same input source) with level/output controls for each of the 700s RMS power output sections to control speakers.

If you need more info, or if I was not clear, please let me know and I will help in any way that I can.

Thanks! John

So if I understand correctly, with the dual 1400 you can have two different input signals for channel one and channel two and amplify them separately to output one and two (not just DI one and two)? Letˋs say like a straight bass sound through channel one to cab one and a delayed signal through channel two to cab two?

 

[jfiles]

I caused some confusion, so I want to claify. With the ONE1400 you have different level controls for each of the 700W RMS amplifiers and can balance the two cabinets with different levels and adjust those levels, but you just have the single input channel.

The DUAL1400 has the same amplifier section, but both amplifiers use the same input and do not have level controls. The DUAL preamp instead uses an input gain and master gain for each channel to balance the two inputs. The outputs from both channels will drive a single input signal to each of the amplifiers at the same time. This still allows you to be able to use multiple cabinets and you can still have different impedance loads safely, but you do not have amplifier level controls on the amps and the same signal is sent to each amplifier.

There isn't enough space on the DUAL series to have a third level control - they had to stop somewhere.

I hope this makes it a bit more clear. If you want to drive two different cabs, have level controls and have this in one package then the PureAmp1400 or ONE1400 will do that, but you will only have a single channel.

Let me know if you have any further questions or if I can help in any way.

Thanks!

 

[RickyVT]

Ok I understand, I would need like 2 ONE800’s to do what I mentioned above... thanks for clearing that out!

 

[jfiles]

You're welcome. Just give us a shout if we can help in any way! Thanks!

 

[garaffa]

Hi,

If you are asking about the difference between the CUBE112 and the GR112H, there are a few differences. From a use perspective, the CUBE112 is designed to be as compact and lightweight as possible (while still achieving great performance standards). The GR112H is a larger cabinet that is designed for great sound, not regarding the size or weight, in its performance class. Here is a simple comparison chart showing the major differences:

CUBE112
Dimensions: 17"H x 15.75"W x 13.75"D (3681 cubic inches)
Weight: 24.25 Lbs.
Tweeter/Control: 3-Position Switch for Level Control
Freq. Resp.: 40Hz ~ 18kHz

GR112H
Dimensions: 15.25"H x 20"W x 13.75"D (4,194 cubic inches)
Weight: 28.25 Lbs.
Tweeter/Control: Larger/Better Tweeter & Variable L-pad for Level Control
Freq. Resp.: 38Hz ~ 22kHz

So, in short, the GR112H has a broader frequency response (more top-end and more bottom-end) & has a better tweeter & level control. The CUBE112 is smaller, lighter and a bit less expensive ($100 street price). If you are looking for the smallest package with the least weight and don't find that you need the frequency extremes, then the CUBE112 is a great choice. If you still want a small, light cabinet, & don't have size restrictions (this cabinet is about 14% larger) but are a bit more needy on the top and bottom, want more tone sculpting control and budget is secondary, then the GR112H is the best choice.

I have a CUBE112 that I use everyday and I like it because of its weight and size. I like the sound of the GR112H a little more, but my use of the CUBE112 has a size and weight priority.

If you have other questions, please let me know and I will be happy to answer them.

Hi, are you using neodymium speakers in the GR 112H? Is there anywhere I could get a specification sheet of the 12' speaker? Thanks.

 

[jfiles]

Hi, yes, all GR Bass cabinets use Neo drivers, which is how they are as lightweight as they are. A ceramic or alnico driver would weigh much more, and the overall cabinet would also weight that much more. The GR Bass cabs use Sica drivers made in Italy. They are a company founded in 1976 and have been building drivers for high-end audio, PA, studio monitors, MI, etc. They also own the Jensen speaker company. There is no spec sheet for these drivers. They are a proprietary driver developed in tandem with the cabinetry and are only intended as such. Since they are not sold individually, no such spec sheet exists. That is information that belongs to GR Bass and their engineers.

 

[Radchenko]

Hello,
Is the gr bass pure amp 800 a power amp which don't need of pedal preamp if you want? Directly the passive bass to pure amp 800 can be played?. I am asking this because the gain knob. What is its utility?
What type of cable/conector is neccesary yo use for the 9volt suply for pedals?.

Is the gr mini one powerful enough to play in a band? Very similar sound to Eich?.

Thank you

 

[jfiles]

The GR Bass PureAmp is a complete bass amplifier and will work prefectly with any passive or active bass amplifier. It is a great pedal platform, as well. If you don't need the EQ, tuner, etc. it would be perfect. You would use a single 9v cable like the Voodoo Lab 2.1mm Straight Barrel Cable (Voodoo Lab PPBAR-RS 2.1mm Standard Polarity Straight to Right-Angle Pedal Power Cable - 18" | Reverb). The GR mini is a great amplifier and if all you need is 350w RMS at 4-Ohm, then it will be loud enough. I don't know how loud you play, so I cannot say. I recommend the ONE800 because of the power, but also the headroom. There are a couple of PureAmp800s on sale here (Bass Emporium).

 

[Radchenko]

Thank you,
Really interesting use the pure amp 800 alone with my passive sandberg.
I'm from Europe

 

[Radchenko]

Hello,
Have a noisy fan gr bass one 800?
This head has two options for the fan
But gr bass pure amp 800 don't have this options. Is It because the pure amp 800 is dead silent?. Thank you.