Summary of Rack Gizmo
Page 1
Rack gizmo user’s manual rjm music technology, inc. Tm.
Page 3
Rack gizmo user’s manual version 1.0 august 3, 2011 rjm music technology, inc. 2525 pioneer ave. Suite 1 vista, ca 92081 +1-760-597-9450 email: support@rjmmusic.Com web: www.Rjmmusic.Com tm.
Page 4
Copyright © 2011 rjm music technology, inc. All rights reserved amp gizmo, effect gizmo, rack gizmo, click stopper, mastermind, mini amp gizmo and the rjm logo are trademarks of rjm music technology, inc..
Page 5
V table of contents table of contents.............................................................................................................................................................. V introduction ............................................................................................
Page 6
1 introduction congratulations on purchasing the rack gizmo audio loop and function switcher. The rack gizmo has been designed to give you total control of your amplifier, effects devices, effects pedals or other electronic equipment from a single midi footswitch. The rack gizmo provides eight audio...
Page 7
2 fr on t pan el 1 2 3 4 6 5.
Page 8
3 rear pan el 23 24 22 21 20 18 19 18 16 19 17 18 16 19 17 12 13 7 8 6 9 10 11 25 15 16 14 17 18 16 19 17.
Page 9
4 controls and connectors front panel 1. Input jack – this jack is connected to the rear panel from front jack (8), and will pass a mono or stereo signal through to that connector. 2. Function switch buttons - these buttons turn function switches 1 through 8 on and off. The led above each button is ...
Page 10
5 about audio loops 1 through 4 audio loops 1 through 4 are connected in series. Each loop is connected internally to the next. When a loop is off, the send and return jacks for that loop are bypassed. The audio signal passes through unchanged. Turning the loop on routes the guitar signal through th...
Page 11
6 important: note that amp 1 and amp 2 jacks are switched in unison. Any function switching affects both amp jacks simultaneously. For example, turning function switch 1 on will turn that designated function on for both amp 1 and amp 2. 22. Midi thru/out – any midi commands sent to the midi in port ...
Page 12
7 special features audio buffer using long cables or many effects may degrade the guitar signal, causing it to lose clarity and definition. The audio buffer is used to “strengthen” the guitar signal and preserve sound quality. The effect may vary from subtle to significant, depending on the length a...
Page 13
8 function switching a.K.A. Controlling your amp the rack gizmo has the ability to control footswitchable features on many amps. This could be channel switching, reverb, tremolo, etc. – anything that is controlled by the amp’s footswitch. Rjm music sells a wide variety of interface cables that conne...
Page 14: Rack Gizmo W
9 set u p e xam p les th e fo llo w in g d iag ram s sh o w s o m e o f th e m an y w ays yo u c an u se yo u r ra ck g iz m o in a gui ta r ri g. Pl e as e c he ck our w e b s it e f or m or e e xa m p le s. In out in out in out in out in out in out in out in out rjm m usic technology , i nc . W w ...
Page 15: Rack Gizmo W
10 in out in out in out in out in out in out in out in out rjm m usic technology , i nc . W w w .Rjmmusic .C om rack gizmo w iring d iagr am rack g izmo w iring d iagr am 8 p edals , 1 amp , tuner the guitar sig nal passes fr om the fr on t panel jack , thr ough the bu ffer , then thr ough the first...
Page 16: Rack Gizmo W
11 in out in out in out in out in out in out footswitch jack input amp 1 rjm m usic technology , i nc . W w w .Rjmmusic .C om rack gizmo w iring d iagr am rack g izmo w iring d iagr am 6 p edals in fr ont of t w o amps the guitar sig nal passes fr om the fr on t panel jack , thr ough the bu ffer , t...
Page 17: Rack Gizmo W
12 in out in out in out in out rjm m usic technology , i nc . W w w .Rjmmusic .C om rack gizmo w iring d iagr am rack g izmo w iring d iagr am 4 p edals in fr ont of t w o amps , swit chable pr eamps , 2 st er eo e ffec ts pr oc essors this setup enables y ou t o selec t fr om t w o di ffer en t amp...
Page 18: Rack Gizmo W
13 in out in out in out in out rjm m usic technology , i nc . W w w .Rjmmusic .C om rack gizmo w iring d iagr am rack g izmo w iring d iagr am 6 p edals , pr eamp , 2 st er eo e ffec ts pr oc essors in par allel , st er eo p ow er amp the guitar sig nal passes fr om the fr on t panel jack , thr ough...
Page 19
14 midi usage the rack gizmo can receive midi messages from any midi footswitch or other midi controller. By storing different settings, or “patches” for different midi program numbers, you can automatically recall a stored patch by sending the correct midi program number from your footswitch. You c...
Page 20
15 bank selection the rack gizmo can store programs in midi banks 0 and 1, for a total of 256 programs. Continuous controller #0 (bank msb) is used to select the current midi bank. Bank numbers above bank 1 are ignored. By default, bank selection is disabled. You can enable bank selection using setu...
Page 21
16 setup mode to configure the rack gizmo, you must first enter setup mode. Holding down selected buttons while powering the unit on will bring up selected setup modes, as detailed in this section. Selecting midi channel and midi options hold the audio loop 1 button while powering the rack gizmo on....
Page 22
17 the function switch 3 and 4 buttons control the continuous controller range for all function switches: function switch cc range gcx number function switch 3 led function switch 4 led 80…87 1 off off 88…95 (default) 2 on off 64…71 3 off on 56…63 4 on on gcx compatibility mode function switch 5 tur...
Page 23
18 off/on state by closing its contacts for a short time and then re-opening them. In momentary mode, the rack gizmo switches will close for 100 milliseconds before opening again.) to enter momentary mode, hold down the audio loop 3 button while powering up the rack gizmo. Keep holding the button un...
Page 24
19 factory reset to restore the rack gizmo to the factory settings, hold the audio loop 1 and audio loop 4 buttons while powering up the rack gizmo. All of the leds will turn on for a few seconds, then turn off. Once they turn off, factory reset is complete and you can release the audio loop 1 and 4...
Page 25
20 troubleshooting problem: the leds don’t flash when you hold down the write button. Solution: the rack gizmo did not receive a midi program change message. First, verify that you have a valid midi connection. The midi output of your midi controller should be connected to the midi input of the rack...
Page 26
21 grounding issues guitar rigs are complex electrical systems, and rigs with switching systems are among the most complex. The more complex the rig, the more likely you are to encounter grounding issues. Every audio path in the system must be shielded, with a good connection to ground, or you may g...
Page 27
22 specifications amp connector pinout the rack gizmo amplifier function switch connectors are female din-8 jacks. When a function switch is activated on the rack gizmo, the corresponding pin is shorted to the connector’s ground (shield). Activating function switch 1 shorts pin 1 (as numbered above)...
Page 28
23 front panel midi connector the front panel midi connector is a female 6-pin xlr connector. This connector carries midi data in both directions as well as phantom power. This connector is wired in parallel with the rear panel midi input, so it is very important to only use one of the two connector...
Page 29
24 rack gizmo midi implementation chart midi implementation chart v 2.0 (page 1 of 3) manufacturer: rjm music technology, inc. Model: rack gizmo version: 1 date: august 3, 2011 transmit/export recognize/import remarks 1. Basic information midi channels 1-16 1-16 channel 1 is set by default note numb...
Page 30
25 midi implementation chart v 2.0 (page 2 of 3) manufacturer: rjm music technology, inc. Model: rack gizmo version: 1 date: august 3, 2011 control # function transmitted (y/n) recognized (y/n) remarks 0 bank select (msb) n y banks 0 and 1 only 1 modulation wheel (msb) n n 2 breath controller (msb) ...
Page 31
26 midi implementation chart v 2.0 (page 3 of 3) manufacturer: rjm music technology, inc. Model: rack gizmo version: 1 date: august 3, 2011 control # function transmitted (y/n) recognized (y/n) remarks 64 sustain pedal n y alt. Cc range 1 65 portamento on/off n y alt. Cc range 1 66 sostenuto n y alt...
Page 32
27 warranty rjm music technology, inc. Warrants this product against any defects in material or workmanship for a period of one year from the original date of purchase. Should you experience any difficulty with this rjm music product, please contact us as described below. If it is determined that th...