Samson S Class Specifications

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Samson S Class Specifications | Manualzz

4 CHANNEL STEREO HEADPHONE AMP

Table Of Contents

Introduction and Features

Front and Rear Panel Layout

Operating the S amp

Typical Set-Up

Headphone Impedance and Sensitivity Ratings

Specifications

Copyright 2003, Samson Technologies Corp.

Printed January 2003

Samson Technologies Corp.

575 Underhill Blvd.

P.O. Box 9031

Syosset, NY 11791-9031

Phone: 1-800-3-SAMSON (1-800-372-6766)

Fax: 516-364-3888 www.samsontech.com

5-6

6

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4

7

8

S amp Introduction and Features

Introduction

Thank you for purchasing the S amp miniature headphone monitor system from

Samson Audio! S amp provides an elegant solution for headphone monitoring, either on stage or in the studio. The S amp is a specially designed headphone amplifier that allows you to control the level balance between four sets of headphones. Providing unusually high power levels and superb audio fidelity, the S amp is compatible with virtually all popular headphone models. And just because this unit is miniature, don’t be surprised with its great sound and reliability, thanks to the use of high quality components and solid build construction.

In this manual, you’ll find a more detailed description of the features of the S amp, as well as a guided tour through the front and rear panels, step-by-step instructions for using the S amp, a reference chart that gives impedance and sensitivity ratings for a number of popular headphone models, and full specifications. You’ll also find a warranty 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.

S amp Features

Four channel stereo headphone amplifiers

Maximum output power on each channel regardless of different headphone impedances

Four 1/4-inch stereo headphone outputs

Individual volume control for each headphone output

Stereo 1/4 inch input connector

Rugged aluminum extrusion chassis

Large rubber bumper feet

18 Volt AC adapter included

Three year extended warranty

3

S amp Front and Rear Panel Layout

Front Panel Layout

1 2 3 4 5

1 LEVEL 1 - Control knob used to adjust the output level of

Headphone 1.

2 LEVEL 2 - Control knob used to adjust the output level of

Headphone 2.

Rear Panel Layout

A B C D

3 LEVEL 3 - Control knob used to adjust the output level of

Headphone 3.

4 LEVEL 4 - Control knob used to adjust the output level of

Headphone 4.

E

5 STEREO INPUT - 1/4-inch TRS (TIP/

RING/SLEEVE) connector to input main stereo signal.

F

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A DC POWER INPUT - Connect the supplied power adapter here.

D HEADPHONE 2 - 1/4” output for connecting headphone 2.

B POWER LED - Red LED will illuminate when power is on indicating the S amp is ready for operation.

E HEADPHONE 3 - 1/4” output for connecting headphone 3.

C HEADPHONE 1 - 1/4” output for connecting headphone 1.

F HEADPHONE 4 - 1/4” output for connecting headphone 4.

4

Operating the S amp

The basic procedure for setting up and using your S amp is simple and takes only a few minutes. Remove all packing materials (save them in case of need for future service) and check to make sure that you remove the supplied AC power adapter.

IMPORTANT NOTE: Before you install the headgear, be sure to double check that the MIC and

STEREO level controls are turned to the all the way down (fully counter clockwise position). The S amp is small, but powerful. It can generate loud signal levels into the connected headphone. We recommend that you exercise extreme caution and care for your ears. They’re your most important tool, and instrument. Always start with the level controls all the way off and slowly raise the signal to a comfortable listening level.

Connect the output from the device you want monitored to the STEREO INPUT jacks on the S amp front panel.

Set the controls to the following positions:

Turn the four headphone channel LEVEL knobs to their minimum (fully counterclockwise) setting.

Plug the S amp power adapter into a wall outlet.

Apply a signal, like the output of a mixer playing a CD, to the S amp’s STEREO

INPUT jack.

Connect a set of headphones to Channel 1 and slowly turn the channel’s LEVEL knob clockwise until you hear the desired level.

5

Operating the S amp

Repeat the previous step for all Channels that have headphones connected, making sure to start the LEVEL 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 others to achieve the same volume. This kind of disparity will occur if the various headphones have different impedances. The lower the impedance, the louder the headphone will sound compared to another, higher impedance headphone at the same VOLUME setting.

Another factor affecting headphone loudness is called sensitivity. This is generally 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 5 of this manual for more details.

Typical Set-up

The diagram below shows a typical set-up for a small band using the S amp headphone amplifier with a stereo mixers for a sophisticated personal headphone monitoring system.

6

Headphone Impedance and Sensitivity Ratings

Virtually all headphones that terminate in a stereo 1/4" plug can be used with the S amp

Headphone Amplifier. This chart provides a partial listing of some of the more popular models, along with their impedance and sensitivity ratings. As described on page 4 of this manual, headphones with lower impedances (or higher sensitivity) will sound louder as compared to other, higher impedance (or lower sensitivity) headphones at the same channel Volume setting. Samson Technologies has no connection with any of these manufacturers, nor do we endorse any particular models for use with the S amp. This is simply a reference listing for your convenience. For more information about any of these headphones, contact the manufacturer directly.

SAMSON HEADPHONES

PH60

RH100

RH300

RH600

CH70

CH700

32 ohm

64 ohm

32 ohm

40 ohm

32 ohm

64 ohm

100 dB

106 dB

106 dB

106 dB

103 dB

108 dB

OTHER MANUFACTURER'S HEADPHONES

Manufacturer Model

AKG K-141

AKG K-240

Beyer

Beyer

DT-150

DT-801

Impedance Sensitivity

600 ohm

600 ohm

98 dB

88 dB

250 ohm

250 ohm

114 dB

114 dB

Fostex

Fostex

Fostex

Sennheiser

Sennheiser

Sony

Sony

Sony

T-10

T-20

T-40

MDR-7502

MDR-7504

MDR-7506

50 ohm

50 ohm

50 ohm

HD-450 (original) 70 ohm

HD-450 Series II 60 ohm

45 ohm

45 ohm

63 ohm

91 dB

96 dB

98 dB

94 dB

94 dB

100 dB

103 dB

106 dB

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S amp Specifications

Input Impedance:

Max Input Level:

Input Connectors:

Outputs:

Output Impedance:

Max Gain:

S/N Ratio:

THD:

IMD (SMPTE)

Power:

Dimensions:

Weight:

100K Ω unbalanced

+19 dBV

Stereo 1/4” TRS phone

(4) 1/4” Stereo 1/4”

100 Ω each output

20 dB/Channel

>90 dB

<.005%

<.005%

18 VDC adapter

5.65” L x 4.13” W x 2” H (144mm L x 105mm

W x 51mm H)

16.5 oz., 419 gm.

Samson Technologies Corp.

575 Underhill Blvd.

P.O. Box 9031

Syosset, NY 11791-9031

Phone: 1-800-3-SAMSON (1-800-372-6766)

Fax: 516-364-3888 www.samsontech.com

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