Gamut GamuT "L Manuel de l'utilisateur - Page 9

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• We recommend the following minimum listening distances:

L3: 8' or 2,5 m. L5: 10' or 3 m. and the L7: 12' or 3,5 m

• Distance from the side wall should be as big as possible,

and a minimum of app. 30" or 75 cm.

(measured from the centre of the tweeter)

• Distance from the rear wall must be a minimum of app. 25" or

65 cm again measured from the centre of the tweeter

Toe-in (Or NOT to toe-in):

We have designed our speakers to be listened to off axis.There

are a few good reasons for that.

• On the axis of a speaker you will find most diffraction effects

of the cabinet and drivers, as most diffractions (the really bad

ones) originate from symmetric structures around the drivers

(cabinets, frames etc.)

• On axis the drive units will have the highest distortion

numbers.The reason is that the driver is directional and that

distortion is at higher frequencies, so the directivity kills most

of the distortion of the drivers if you go off axis...so why not?

• The only reason for toeing the speakers towards the listening

position is if you have problems with too many reflections off

the sidewalls, then a moderate toe-in can help

Tilting (Optimizing to your listening height):

All our GamuT Speakers are designed to have a listening window

that is pointing a little upwards.

(We assume you are either sitting in a chair listening or walking

around in your living room while listening....)

This means you should always be at a listening height where your

ears are at least on the same height as the tweeter or a little

above, again assuming the speaker is not tilted.

If your listening position is relatively low, you should use your

spikes to tilt the speaker a little forward.

Only if you are standing up listening, or have a very high listening

position, the speakers will need to be angled backwards.

NOW START TO PLACE YOUR SPEAKERS

by using the instructions below!

How to calculate your speakers & listening position:

In the following example we assume you will position you

speakers on the short wall in the room.

This is not always the best choice, but the guide lines can be

used in the same way if you choose to set up your speakers on

the longest wall of your room.

1. Measure your room dimensions (Width and Length) and

write down the measures Example:W: 5,20 & L: 6,40

2. Divide the W & L measures with 5 and write that number

down.This example:W5=1,04 & L5=1,28

3. Divide the W & L measures with 7 and write that number

down.This example:W7=0,74 & L7=0,91

4. Divide the W & L measures with 9 and write that number

down.This example:W9=0,58 & L9=0,71

Now with the recommendations for minimum distances

to side & rear walls in mind you can derive a good starting

position for you speaker.

We assume you have bought the L5, so the minimum listening

distance is 3,0m.

The distance from sidewalls must be minimum 0.75m so the

maximum spacing is W - 2 x "minimum wall distance"

= 5,20-2x0.75 = 3,70 and minimum 3m. which is the same

as the minimum listening distance.

5. Now find the calculated figures of W5/W7/W9 closest to or

bigger than 0.75m W7:0,74m or W5:1,04m meters from the wall

6. Now calculate the minimum listening distance & spacing using

W7&W5:W(5,20)-2xW5(1,04)= 3,12 Or W(5,20)-2xW7

(0,74)=3,72. Choose the wider position, and if this causes

problems with the 3D imaging use the guidelines in the

"tuning the sound character" section.

7. You can now choose the speaker distance from the rear wall,

and as all the measures of L5/L7/L9 are bigger than the

recommended minimum distance from the back wall, we

recommend you start out with the minimum distance possible,

in this case L9(0,71 cm), (measured from the centre of the

tweeter).

8. Now calculate your listening position using the following

formula:

Distance from the back wall(L9) + spacing x 0.866= 0.71

+ 3,72 x 0.866= 3,93.The listening position will then be the

first multi plum of L5/L7/L9 that is closest to and larger than

3,93m.

In this case: 6x0.71=4,26, or the second option 5x0.91=4,55,

or the third option 7x0.71=4,97.

(measured from the wall behind the speakers.)

9. If you prefer to sit farther away just keep on multiplying

L5/L7/L9, to find the "optimum" listening positions

10. Now setup your speakers (without toe-in) and tilt them to fit

you listening height (see instruction above)

Tuning the sound character (Optimizing the listening

position and speaker positioning)

After you have run in the speakers, you can use the following guide

lines to find the optimum positions.

• By listening to the speakers you should be able to determine

if the overall performance and frequency balance is ok.

If not use the following guidelines to correct the sound

character:

• If the bass character is too weak move the speaker closer

to either the back wall or the side walls. If you have too much

bass move the speakers away from the side walls / back wall.

4" or 10 cm. will make quite a difference.

• If you want to optimize on the 3D-imaging (height depth

width) you will need to work on limiting the high frequency

energy being reflected.There are two possibilities:

• 1: Move the speakers away from the side walls and the

back wall

• 2: If moving the speakers away from the walls/ back wall

ruins the bass performance a solution can be to dampen or

diffuse the reflections of the side walls and the back wall,

suited materials can probably be bought at your dealer or

at specialist shops.

• If you can not find the perfect compromise a new listening

position is probably a solution.Try moving your head a little

back or a little forward, to determine if the sound changes,

if so you should move your listening position and start over

with the positioning of the speakers if needed.

• As you have probably found out by now this process can be

relatively time consuming, but we assure you it is worth the

effort! HAPPY HUNTING.