Rane SM26B 6 Channel Rackmount Splitter and Mixer

$99.00

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Brand: RANE
Model Number: SM26B
Product Code: BS18437
Quantity in stock: 2

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Rane SM26B 6 Channel Rackmount Splitter and Mixer

The Rane Model SM 26B Splitter Mixer is one of the most useful, yet unusual audio products available. In its most basic configuration, it is a six-to-two line level mixer. It will accept six balanced or unbalanced line level inputs which are applied to six Level and Pan controls. An additional stereo Master Input allows a total of eight inputs. The result of the mix is sent to an overall Master Output Level control and appears at the Left and Right Output jacks on the rear. In its splitter mode, the SM 26B can take one or two line level inputs and split these to any of the six Mono Outputs on the rear. The Mix/Pan controls in this mode control the level from each of the two input buses to be applied to each Output. Internal header blocks allow the Mix Output jacks to become an independent stereo out, allowing a total of eight outputs. The SM 26B may also be used as a six input, six output buffer amplifier in which case signal applied to Input 1 is delivered to Output 1, and so on.

Technical Details

1. LEFT & RIGHT MASTER INPUTS. These are balanced Tip-Ring-Sleeve (TRS) ¼" Inputs. These Inputs feed all six MONO OUTs when all MONO INs are not used. Connecting to individual MONO INs disconnects that channel from these Inputs (refer to the Block Diagram found on the SM 26B Data Sheet). For unbalanced operation use a standard mono ¼" plug; for balanced operation use a TRS (stereo) ¼" plug wired as follows:

TIP is signal + (connect to Pin 2 on a 3-pin connector).

RING is signal - (pin 3 in a 3-pin connector).

SLEEVE is signal or chassis ground (case on a 3-pin connector). An internal Input Sheild Reference jumper connects signal ground (default), chassis ground, or neither to all Input Sleeve connections. See the assembly diagram for location should the need arise to change this.

2. LEFT & RIGHT EXPAND OUTPUTS. These ¼" TRS jacks are connected in parallel with the Master LEFT & RIGHT INPUT jacks, allowing two or more SM 26Bs to be daisychained for multiple splitting. Simply connect these EXPAND OUTPUTS to the LEFT & RIGHT INPUTs of another SM 26B; there is no limit to the number of expansions possible with the SM 26B.

NOTE: These Expand Outputs are not buffered from the Master Inputs. Therefore it is not possible to mix both balanced and unbalanced lines in the same channel between several units: once the ring and sleeve are shorted anywhere in the chain (by using a mono plug) the entire line becomes unbalanced.

3. MONO INPUTS. These are TRS ¼" jacks which accept either balanced or unbalanced mono signals. These are switching jacks which automatically bypass the Master LEFT & RIGHT INPUTs whenever a plug is inserted (see the Block Diagram). Follow wiring conventions as in #1.

4. MONO OUTPUTS. These ¼" TRS jacks deliver either a conventional unbalanced output (use mono cords), or a balanced output (use TRS cords). Follow wiring conventions as in #1. A separate jumper exists to change all Output Sleeve connections from signal ground, chassis ground, or neither. Refer to the assembly diagram for the jumper location if you need to change this.

5. LEFT & RIGHT MIX OUTPUTS. These balanced TRS ¼" outputs are controlled by the MASTER OUTPUT LEVEL

control. They are fed either by the Master LEFT & RIGHT INPUTS (respectively) or by any of the six MONO INPUTS, or a combination of both (Rane Note 108 helps). Follow wiring conventions as in #1.

6. Remote power supply input. The SM 26B is supplied from the factory with a Model RS 1 Remote Power Supply suitable for connection to this input jack. The power requirements of the SM 26B call for a 18-24 volt AC center-tapped transformer only. This is not a telephone jack. Never use a power supply with your SM 26B other than the one supplied or a Rane approved replacement.

7. Chassis ground point. A 6-32 screw is used for chassis grounding purposes. See the CHASSIS GROUNDING note on the next page for details.