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JamHub FAQ

I have just received my JamHub. Do you have any useful tips for me?

Why am I only hearing my instrument in my left ear through my headphones?

How can I connect my guitar amp directly to the JamHub?

Where can I get more of the mono-to-stereo 1/4" adapters?

How about using stomp boxes direct to JamHub?

What are the Solemix Remotes for? Can I add more players with them?

Is the USB output on TourBus and GreenRoom multi-channel or is it stereo?
Haven’t found what you’re looking for? You can click here to go to the JamHub FAQ which contains a wealth of good technical information. Or you can send us an email with your question.

 


 

I have just received my JamHub. Do you have any useful tips for me?
The information in this article applies to: All JamHub models
  1. Use good TRS (Stereo) cables and plug the cable going from the JamHub instrument input jack directly into the headphone output jack on your modeling amp, keyboard or drums. Please click here to view the recommended accessory which can be purchased from your local JamHub Dealer.

  2. Get 20 foot headphone extensions so you can move around as much as you want. Please click here to view the recommended accessory which can be purchased from your local JamHub Dealer.

  3. Use good headphones for good listening. The JamHub is acoustically transparent. If your headphones lack quality, the JamHub won't make the headphones sound better. Please click here to view a range of great headphones which can be purchased from your local Roland Dealer.

  4. Get each player to pick up a microphone, even if they don't sing. Once you put on the headphones and enter the silent rehearsal studio environment, you can't hear the outside world very well. It's easier to communicate if everyone has a mic and you can hear each other in the headphones. Please click here to view a range of great microphones which can be purchased from your local Roland Dealer.

  5. Make sure you're not clipping the preamp (check the Trim LED for red) at max volume or it will sound distorted. You should control the volume going into the JamHub's inputs from your instrument or amplifier's volume control.

  6. Turn down any trim controls of unused sections to minimize outside electromagnetic noise.


 

Why am I only hearing my instrument in my left ear through my headphones?
The information in this article applies to: All JamHub models

The JamHub is a stereo listening environment. As mentioned in section three of the 'Quick Start' guide, on page 7 of the Owner's Manual and on the wrapper for the included adapter(s), your JamHub's 1⁄4" instrument inputs are stereo inputs. They use stereo connectors, also called TRS connectors where T (tip) = left, R (ring) = right and S (sleeve) = ground. Standard mono instrument cables use TS connectors where T (tip) = signal and S (sleeve) = ground. When a mono cable is connected to a stereo input, the tip from the mono cable gets to the tip (left) of the stereo input, but the mono cable isn't sending anything to the ring (right) side. This could be why you're only hearing it in the left earpiece.

Nearly all of the devices that we envisioned being connected to JamHubs' instrument inputs (amp modelers, keyboards, e-drums, etc.) have stereo headphone outputs. These can be quickly and easily connected to JamHub stereo inputs with a stereo cable (TRS male on both ends). We offer our own accessory Stereo Connection 5-pack for this very purpose.

As mentioned above, your JamHub comes with 'mono-to-stereo' adapter(s) (one with Bedroom, two with GreenRoom and TourBus). The adapter basically turns a mono cable into a stereo 'dual mono' cable (technically not the same as stereo, but at least you can hear it in both sides). It does so by routing the signal at the tip of your mono cable to both the tip and ring of the adapter, which then plugs into the JamHub. This works well for connecting instruments like electric bass, acoustic/electric guitar or any mono instrument that sounds good on its own when plugged in directly.


 

How can I connect my guitar amp directly to the JamHub?
The information in this article applies to: All JamHub models

Can I use the Speaker out?

NEVER connect your amp's speaker output jack to anything other than a speaker or other device that can handle a speaker-level signal. Connecting it directly to a JamHub input will quickly cause serious damage to your JamHub and will void your warranty. This can also cause irreparable damage to your guitar amp. This is true even of your guitar amp is a tiny '1 Watt' tube amp.

Can I use the Line out?

The 'line out' jack on your amp can be connected to a JamHub, but we recommend that you consider the following carefully before doing so:

Using most guitar amps' line outputs doesn't mute the amp's speaker or disengage its circuitry. Amps can suffer damage from running without a speaker (or at least a 'dummy load') connected.

The sound from an amp's line output jack is often very different from what you're used to hearing from that amp's speaker. Unless it's a 'speaker emulating' line output, most guitarists describe it as comparatively 'harsh' or 'thin-sounding'.

The line outputs from most amps usually carry a mono signal. When connecting to a JamHub's stereo instrument input, use an included mono-to-stereo adapter to get the signal into both sides of the headphones.

Can I use the Headphone out?

Some guitar amps have direct, speaker-simulated headphone outputs that 'mute' the amp's speaker when engaged and sound very good into headphone systems. Those without speaker-emulated outputs tend to sound bright/harsh/tinny compared to the way they sound through the amp's speaker.

We recommend that the best, easiest and most versatile way to get great, 'silent' electric guitar tone with a JamHub is to use a Boss / Roland Amplifier or Effect Pedal with COSM® Amp Modelling Technology. Feed the stereo headphone output from any of these into a JamHub stereo Instrument input and you're ROCKIN' ALL NIGHT!



 

Where can I get more of the mono-to-stereo 1/4" adapters?
The information in this article applies to: All JamHub models

Purchase a Hosa mono to stereo adaptor from your local Intelliware Dealer. The product code you will need to ask for is a GPP-419.Please click here to locate your nearest Intelliware Dealer.



 

What are the Solemix Remotes for? Can I add more players with them?
The information in this article applies to: All JamHub models

Each SoleMix remote is shaped like a JamHub section, has a headphone output and can access all sections (1 through R) on the JamHub. Unlike those JamHub sections though, remotes don't have inputs. It might help to think of them as 'remote listening stations'. Our original intent for them was to allow musicians whose access to the JamHub is blocked by their gear (drummers, keyboardists, etc.) to create and adjust their mix from where they are playing. With SoleMix remotes connected to all four ports, a GreenRoom or TourBus is capable of creating 11 unique mixes from whatever sources are connected to the JamHub's seven input sections. A BedRoom with a SoleMix remote connected to its single remote port is capable of creating 6 unique mixes from whatever sources are connected to the JamHub's five input sections.


 

How about using stomp boxes direct to JamHub?
The information in this article applies to: All JamHub models

A guitarist can connect Stomp Box type effects pedals directly to a JamHub. If the last box in the chain has a mono output, you'll want to use an included mono-to-stereo adapter such as the Hosa GPP-419 to get the mono signal into both sides of the JamHub stereo input. For electric guitars, we recommend using a Boss / Roland Product that contains COSM ® Amplifier Modelling Technology because they include simulations of the 'amp' and 'speaker' components of guitar tone, as well as lots of built-in effects. Most users find that using only basic stomp boxes with no built-in 'amp' and/or 'speaker' emulation will result in harsh and thin-sounding guitar tone. Please click here to view the current range of Boss multi effects.



 

Is the USB output on TourBus and GreenRoom multi-channel or is it stereo?
The information in this article applies to: TourBus and GreenRoom  models

The USB output carries the stereo mix that you create at the JamHub's 'R' section. It works really well for capturing song ideas, making demos, critiquing the band's performance, etc... If you want multitrack recording then you may want to consider purchasing the excellent Roland UA-1010 Audio Interface.