Samson Q5 Manual de usuario

HEADPHONE

AMPLIFIER

SAMSON®

Introduction 3

System Features 4

Guided Tour 5

Front Panel 5

Rear Panel 6

Setting Up and Using the Q5 7

Using the Q5 with a Patchbay 9

Linking Multiple Q5s 10

Reference Chart A:

Headphone Impedance and

Sensitivity Ratings 11

Reference Chart B:

Impedance vs. Wattage 12

Specifications 13

Introduction

Congratulations on purchasing the Samson Q5 Headphone Amplifier!

Although this unit is designed for easy operation, we suggest you take

some time out first to go through these pages so you can fully under-

stand how we’ve implemented a number of unique features.

The Q5 is a compact, high-quality device that allows you to monitor any

stereo or monophonic source signal (balanced or unbalanced) over as

many as five separate headphones. Providing unusually high power

levels and superb audio fidelity, the Q5 is compatible with virtually all

popular headphone models. Front panel controls include a master input

level control and stereo/mono switch, and each headphone output has

its own individual level control. Special output jacks on the rear panel

allow any number of Q5 units to be linked together with no loss of signal.

The Q5 can be used in a wide variety of applications, including record-

ing studios, teaching labs, broadcast environments, and for live perfor-

mance.

In this manual, you’ll find a more detailed description of the features of

the Q5, as well as a guided tour through the front and rear panels, step-

by-step instructions for using the Q5, a reference chart that gives imped-

ance and sensitivity ratings for a number of popular headphone models,

and full specifications. You’ll also find a warrantee card enclosed—

please don’t forget to fill it out and mail it so that you can receive online

technical support and so we can send you updated information about

other Samson products in the future.

System Features

The Samson Q5 Headphone Amplifier utilizes state-of-the-art

technology. Here are some of its main features:

•Special voltage doubler circuitry allows the Q5 to deliver unusually

high output levels while maintaining excellent audio fidelity regard-

less of the number or type of headphones connected.

•Individual level controls for each headphone output allow cus-

tomized gain settings for each user, no matter what type of head-

phone is used. This enables each user to connect the headphone

model of his or her choice, with no audible effect on other users.

•Electronically balanced input connectors (these also accept unbal-

anced input signal) that enable the Q5 to be used with a wide

variety of audio equipment, from professional-level mixing consoles

to home hi-fi devices.

•Need more than five headphones? No problem—a unique

electronically balanced Stereo Link output allows any number of

Q5s to be linked together with no loss of audio fidelity or output

level.

•A master input level control that allows optimum input level to be

set, maximizing signal-to-noise ratio in all applications.

•A master mono/stereo button allows instant switching between the

two modes and also allows an incoming stereo mix to instantly be

checked for mono compatibility.

Guided Tour - Front Panel

1: Input Level / Power knob - Use this to adjust the input level of

incoming signal and to switch the main power on and off (turn fully

counterclockwise to switch the power off). When the Q5 is on, the

“Power”LED (see #2 below) will be lit. Turning the knob clockwise will

increase the gain of incoming signal; turning it counterclockwise will

decrease the gain.

2: Power LED - When the Q5 is on, this LED will light bright red.

3: Mono/Stereo button - When out, all five headphone outputs will

reproduce the incoming signal in stereo. When pressed in, all five head-

phone outputs will reproduce the incoming signal in mono. The setting

of this button does not affect the rear panel Left/Right Stereo Link

Outputs (see next page).

4: Channel Output knob - Adjusts the output level of the signal sent to

the headphone connected to the jack immediately below. Turning the

knob clockwise will increase the gain of the output signal to that head-

phone; turning it counterclockwise will decrease the gain.

5: Channel Headphone jack - Connect any standard pair of stereo

headphones to each of these standard 1/4”stereo jacks. The level of

the signal sent to the headphones is determined by the setting of the

Channel Output knob immediately above that jack.

+10

−∞

OFF

CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 POWER INPUT

MONO STEREO

Q5 HEADPHONE AMPLIFIER

+10

−∞

+10

−∞

+10

−∞

+10

−∞

2 1

Guided Tour - Rear Panel

1: AC input - Connect the supplied Samson AC16 16-volt AC power

adapter here. Do not substitute any other kind of power adapter; doing

so can cause severe damage to the unit and will void your warrantee.

2: AC16 16-volt AC power adapter - Designed specifically for use with

the Q5 Headphone Amplifier.

3: Left/Right Stereo Link outputs - Use these electronically balanced

1/4”TRS (Tip/Ring/Sleeve) jacks to link together multiple Q5 devices.

See the section in this manual entitled “Linking Multiple Q5s”for more

information.

4: Left/Right Amp inputs - Connect incoming signal to these standard

1/4”TRS (Tip/Ring/Sleeve) jacks. Input may be balanced or

unbalanced, to a maximum input level of +18 dBV.

Q5 HEADPHONE AMPLIFIER

DISTRIBUTION AMPLIFIER 500mW 600 Ω

TRS WIRING LINK WIRING PHONES WIRING

TIP +

RING -

SLEEVE GROUND

TIP +

RING -

SLEEVE GROUND

TIP LEFT

RING RIGHT

SLEEVE GROUND

SERIAL NUMBER

STEREO LINK

BALANCED

+14dB MAX. INPUT

BALANCED

LEFT RIGHT

LINK

RIGHT AMP

INPUT

LEFT AMP

INPUT SAMSON TECHNOLOGIES CORP., HICKSVILLE, NEW YORK 16VAC ASSEMBLED IN R.O.K.

Setting Up and Using the Q5

Setting up your Q5 Headphone Amplifier is a simple procedure which

takes only a few minutes:

1. Remove all packing materials (save them in case of need for future

service) and plug the provided AC16 power adapter into the rear panel

AC input—but don’t plug the adapter into a wall outlet just yet.

2. Connect the output from the device you want monitored to the

Left/Right Amp input jacks on the Q5 rear panel (if you’re using the Q5

with an audio patchbay, see the “Using The Q5 With A Patchbay”section

on page 7). The Q5 accepts both balanced and unbalanced

signal; generally, balanced signal is preferable because it provides better

signal-to-noise ratio and reduced extraneous noise.

3. Turn the master Input knob and all five headphone Channel Output

knobs to their minimum (fully counterclockwise) setting and then plug

one to five sets of headphones into the front-panel Channel Headphone

jacks.

4. Plug the Q5 power adapter into a wall outlet and switch the unit on by

turning the Input Level knob clockwise. You’ll hear a click when first

turning the knob and the Power LED will light up. Start by setting the

knob to about the 3 o’clock position.

5. Apply a signal from the device connected to the Q5’s rear-panel

Left/Right Amp input jacks. Put on the first set of headphones and

slowly turn that headphone channel’s Output knob clockwise until you

hear the desired level. WARNING: Because the Q5 is capable of

generating extremely high signal levels, always start with the

Channel Output knob at minimum and then slowly turn it up.

WARNING: Do not substitute any other kind of power adapter for

the provided one. The provided adapter is an AC step-down trans-

former; it is not a DC converter. Use of any power adapter other

than the provided one can result in severe damage to the unit and

will void your warrantee!!

Setting Up and Using the Q5

6. Repeat step 5 for all connected headphones, making sure to start

with the Channel Output knob completely counterclockwise and then

slowly raising it until the desired level is achieved. If you have

connected different models of headphones to the various Channel

Headphone jacks, you may find that some require more gain than oth-

ers to achieve the same volume. This kind of disparity will occur if the

various headphones have different impedances. The lower the imped-

ance, the louder the headphone will sound compared to another, higher

impedance headphone at the same Channel Output setting. Another

factor affecting headphone loudness is called sensitivity. This is gener-

ally measured by determining the decibel (dB) level generated by 1 mW

of power input. The higher the dB rating, the louder the headphone.

See the Reference chart on page 9 of this manual for more details.

7. To achieve optimum signal-to-noise ratio, the master Input Level

should generally be set as high as possible, short of audible distortion.

However, if this results in your getting blasted with signal even though a

Channel’s Output is near minimum, you’ll need to decrease the master

Input Level while raising one or more Channel Output levels.

Conversely, if you find that you have to raise one or more headphone

Channel Output knobs to maximum or near maximum to achieve the

desired level, try increasing the master Input Level while decreasing the

Channel Output(s).

8. To check mono compatibility of a stereo signal being input to the Q5,

press the Stereo/Mono button so that it is down—all five headphone

Channels will then receive the incoming signal in mono.

If you have followed all the steps above and are experiencing

difficulties, call Samson Technical Support (516-932-1062) between

9 AM and 5 PM EST.

Using the Q5 with a Patchbay

If you are using the Q5 with an audio patchbay, you may find it advanta-

geous to connect its Left/Right Amp Inputs directly to a pair of patch

points. This way, you can opt to route signal to the Q5 from any source.

In a recording environment, for example, you may typically use a pair of

mixer Auxiliary sends for a stereo headphone (cue) mix. For maximum

convenience and flexibility, we recommend that you half-normal those

sends to the Q5 input patchpoints so that the connection will automati-

cally be made unless a patch cable is inserted. If a different signal (such

as a stereo bus output or a different pair of auxiliary sends) needs to be

substituted, you can then override this connection simply by inserting a

patch cable.

Linking Multiple Q5s

Any number of Q5s can be linked together (“daisy-chained”), allowing

you to monitor an input signal over more than five sets of headphones.

To do this, simply make a connection between one Q5’s Left/Right

Stereo Link outputs and the next one’s Left/Right Amp inputs, and insert

open-ended “dummy”1/4" TRS plugs into the Left/Right Stereo Link

Outputs of the last Q5 in the chain, as shown in the illustration below*:

Because the Q5 Stereo Link output jacks are electronically balanced,

we recommend the use of 3-conductor cable and 1/4" TRS (Tip/Ring/

Sleeve) connectors. Even when several Q5s are linked together this

way, there is no loss of power or audio fidelity—every Channel on every

Q5 will sound just as loud and clear as if it were the only unit connected.

The status of the front-panel Stereo/Mono button affects only that unit

and has no effect on any subsequent linked units.

* Note: The AC power adapter in this illustration is not shown to scale.

Q5 HEADPHONE AMPLIFIER

DISTRIBUTION AMPLIFIER 500mW 600 Ω

TRS WIRING LINK WIRING PHONES WIRING

TIP +

RING -

SLEEVE GROUND

TIP +

RING -

SLEEVE GROUND

TIP LEFT

RING RIGHT

SLEEVE GROUND

SERIAL NUMBER

STEREO LINK

BALANCED

+14dB MAX. INPUT

BALANCED

LEFT RIGHT

LINK

RIGHT AMP

INPUT

LEFT AMP

INPUT SAMSON TECHNOLOGIES CORP., HICKSVILLE, NEW YORK 16VAC ASSEMBLED IN R.O.K.

Q5 HEADPHONE AMPLIFIER

DISTRIBUTION AMPLIFIER 500mW 600 Ω

TRS WIRING LINK WIRING PHONES WIRING

TIP +

RING -

SLEEVE GROUND

TIP +

RING -

SLEEVE GROUND

TIP LEFT

RING RIGHT

SLEEVE GROUND

SERIAL NUMBER

STEREO LINK

BALANCED

+14dB MAX. INPUT

BALANCED

LEFT RIGHT

LINK

RIGHT AMP

INPUT

LEFT AMP

INPUT SAMSON TECHNOLOGIES CORP., HICKSVILLE, NEW YORK 16VAC ASSEMBLED IN R.O.K.

“DUMMY”

OPEN-ENDED

1/4" TRS PLUGS

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