Raymarine DSM25 black box sounder designed for use with the Raymarine A60 or A65. This 500-watt sounder is housed in a box approximately 8-inches by 5-inches with a depth of 2-inches.
The black box, actually this one is grey, must be mounted on a bulkhead or deck area near the display unit as the connection cable length is limited just over 11 feet. Longer connection cables can be purchased.
Raymarine DSM25
The unit is waterproof to IPX7 standards meaning it could be submerged to 1 meter for 30 minutes without damage.
We tested the DSM25 using both the A60 and A65 plotters in two different test sessions using the classic white color palette. Several other colors are user selectable.
Best Prices on Black Box Sounders.
This module is a full-capability black box and gives both Raymarine chartplotter units sounder qualities and features normally only found on a much more expensive fishfinder.
Standard features include auto and manual depth ranging, zoom, bottom lock, and water temperature.
Some of the more exotic features are 3-mode full-color A-scope, four-function zoom, adjustable range bottom lock and shift, and a rotary knob for gain control.
That last one is rare on black box units coupled to a chartplotter display. Gain has 3 auto settings as well as a manual range of 0 to 100.
This is a screen shot of DSM25 data presented on a Raymarine A60 display unit. Though the A60 does not have a very high resolution display screen we still rated sounder data presentation good because of how well it marked our targets.
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