Palmer RIVER main - Passive 2-Channel Line Merger

Palmer RIVER main - Passive 2-Channel Line Merger

Merge two stereo signals on one output pair

Allows the combination of two devices, e.g. two mixers to a PA System

Galvanic transformer isolation of outputs

Switchable ground lift to isolate ground loop hum

Neutral sound

High headroom (+20 dBu max. input level)

Passive construction, no power supply required

Extremely fail-safe

Solid casing made of aluminium and steel

Engineered in Germany

SKU: AHPMAIN
GTIN: 4049521705359
Category: audio solutions
Manufacturers: Palmer

305.00 CHF

incl. 8,1% VAT ,

RRP: 338.00 CHF

(Save 9.76%, i.e. 33.00 CHF)

pcs.

deliverable
Delivery time: 6 - 7 Workdays info

Sometimes it is necessary to send two stereo signals to one device, for example, when two mixing consoles have to drive a stereo power amplifier. In practice, this is rarely possible without ground loops occurring. The Palmer main solves this type of problem. It mixes two stereo input signals via a resistor matrix, whereby the input pair A is galvanically isolated by a transformer in order to avoid ground loops.

The Palmer main works purely passively. The result is a particularly low noise floor and a neutral sound. Thanks to large transformers, it can handle high-level signals up to +20 dBu without distortion. The transformers also make it possible to assign the input pair A unbalanced while the output signal remains balanced.

The passive mode of operation without a power supply makes the Palmer main particularly reliable and failure-proof. The aluminium/steel housing and XLR sockets are also best suited to the rough everyday life on stage. The Palmer main merge box solves typical sound reinforcement problems in the simplest way with uncompromised sound quality.

Product type	Line summing unit
Channels	2
Type	passive
Transformer isolated	Yes
Inputs	4
input type	balanced
Input connectors	XLR
Outputs	2
Output type	balanced
Output connectors	XLR
Ground lift switch	Yes
Housing	Aluminium continuous casting
Dimension (H/W/D)	140 x 50 x 128 mm
Weight	0,8 kg
Ambient temperature during operation	-20 - 70 °C
Relative Humidity	< 80 %, not condensing
Accessories (included)	Inscription label (tour label)
Accessories (included)	rubber feet

Audio

Max. input level (< 1% THD, 20 Hz)	+20 dBu
Max. input level (< 1% THD, 1 kHz)	+ 32 dBu
Frequency response (±1 dB, relative 1 kHz)	10 Hz - 80 kHz
Input impedance (1 kHz)	3.3 kOhm
Output impedance (1 kHz)	600 Ohm(s)
THD (30 Hz, +4 dBu, unity, unweighted)	< 0,9 %
THD (1 kHz, +4 dBu, unity, unweighted)	< 0,02 %
IMD (SMPTE) (60 Hz / 7 kHz, 4:1, +4 dBu)	< 0,015 %
Transformer ratio	1 : 1

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