Garmin GT-40 or GT-41 transducer ?

[warrior1]

So I need to get a transducer for my Garmin Echomap 73sv and I found a used GT-41-TM for sale but I have a question.  The GT-40 says its for Shallow water (fresh) and the GT-41says its for rougher deeper waters (salt).  I guess my question is: will I not get get good shallow performance from the GT-41 as well?  Both are compatible with the unit,  I was jus wondering if I will sacrifice shallow water views because this is a deep water unit.  I do not fish ocean in my boat at all.

 

ransducer Name

Picture

Description

Garmin P/N

Price

Freq. (kHz)

Power

Beam-width (o) LF/HF (-3dB)

Max Depth (ft.)

Depth/ Speed/ Temp

# of Pins

Cable Length (ft.)

Supported Deadrise/ Transom Angles

GT40-TM

All-in-one Traditional/SideVü/DownVü optimized for clearer image at shallow depths. Provides picture-like images of what is below your boat. Contains fast response water temperature sensor.

010-12220-00

$249.99

Trad 77/200 Down/ Side/ CHIRP 455 khz (425-485) 800 khz (790-850)

Trad 500W, Down/ Side 500W

Trad 45/15 Down/Side 1.1x53@455 0.7x30@800

Trad 1900 fresh 900 Salt Down 750 Side 750

D/T

12

30

0-70° transom

GT41-TM

All-in-one Traditional/SideVü/DownVü optimized for depth and rough conditions. Provides picture-like images of what is below your boat. Contains fast response water temperature sensor.

010-12221-00

$299.99

Trad 50/200 Down/ Side/ CHIRP 260 khz (245-275) 455 khz (445-465)

Trad 600W, Down/ Side 500W

Trad 40/10 Down/Side 2.0x51@260 1.4x29@455

Trad 1500 Down 1000 Side 750

D/T

12

30

0-70° transom

[webertime]

By "deep" they mean 100+ft.  Nothing you'd encounter bass fishing.  I've got 2 GT-40's on big old Lake Champlain.  No issues. 

[Wayne P.]

The specs make no sense with the GT-40 having more depth range--1900 vs 1500

[warrior1]

4 hours ago, Wayne P. said:

The specs make no sense with the GT-40 having more depth range--1900 vs 1500

that's why I'm wondering if it makes a difference.  I can get a used, but basically new CT-41 from a guy for a fraction of the price but I just want to make sure I won't sacrifice on the shallow depth.  What I mean;  if both units work the same to 40 feet, and one is just better at 100+, I can live with that.