Crate SM5-HP Operation & User’s Manual

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 A Description of the SM5-HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Connecting the AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Applications Connecting to a Stereo Headphone Jack . . . . . . . . . . . . . . . . . . .6 Connecting to the Stereo Outputs of a Recorder . . . . . . . . . . . . .6 Connecting to a Mono Monitor Jack . . . . . . . . . . . . . . . . . . . . . .7 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .back cover CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. RISQUE D'ELECTROCUTION NE PAS OUVRIR ATTENTION: POUR REDUIRE D'ELECTRO- CUTION NE PAS ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST REPRABLE PAR L'UTILISATEUR. POUR TOUTE REPA- RATION, S'ADRESSER A UN TECHNICIEN QUALIFIE. VORSICHT ATTENTION ELEKTRISCHE SCHLAGGEFAHR NICHT OFFENEN VORSICHT: ZUR MINIMIERUNG ELEK- TRISCHER SCHLAGGEFAHR NICHT DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM WARTUNGSPERSONAL ZU UBERLASSEN. THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PROVIDE SAFE AND RELIABLE OPERATION. IN ORDER TO PROLONG THE LIFE OF THE UNIT AND PREVENT ACCIDENTAL DAMAGES OR INJURY, PLEASE FOLLOW THESE PRECAUTIONARY GUIDELINES: CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN CHASSIS. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. WARNING: AVOID PROLONGED EXPOSURE OF THE EQUIPMENT TO EXTREME HEAT. CAUTION: NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. "IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL" "REFERREZ-VOUS AU MANUAL D'UTILISATION" "UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN" EXPLANATION OF GRAPHICAL SYMBOLS: "DANGEROUS VOLTAGE" "DANGER HAUTE TENSION" "GEFAHLICHE SPANNUNG" = = SM5-HP Five Channel Headphone Amplifier

compact device has been designed with the audio professional in mind, providing accuracy, quality, ease of use and straight-forward design. Manufactured in the United States, using only the finest componenets, the SM5-HP takes up only one-third of a sin- gle rack space! In order to achieve maximum performance from your SM5-HP and to better under- stand its applications, please read this user’s guide prior to its use. And “Thank You” from A Description of the SM5-HP: The SM5-HP allows you to distribute a single source – the headphones output of a mixer, the line outs of a recorder, the monitor output of a sound board, etc. – to up to five separate pairs of stereo headphones, each with its independent level control, with- out degradation of signal quality or interference between phones. HEAD PHONES TO INPUT SM5-HP Five Channel Headphone Amplifier

1. Headphone Output Jack: Each channel of the SM5-HP has a stereo (T/R/S) 1/4” jack for con- necting to a pair of stereo headphones. The signal level at each jack is determined by the setting of that channel’s output level control (#2), as well as the level of the input signal. 2. Output Level Control: Each channel of the SM5-HP has its own output level control. Each channel operates independently from the others – an adjustment to the level on one channel will not alter the level of any of the other channels. Please see “Muting Feature Note” on page 5. 1 2 The Rear Panel: 3. Power Supply Jack: Plug the small metal barrel connector of the AC power adapter here. 4. Cord Cinch: Use this clip to secure the cable of the power pack to the chassis of the SM5-HP. 5. Left (Stereo) Jack: This stereo (T/R/S) 1/4” jack feeds a stereo signal (such as from a Headphones Output jack) or the left channel of a stereo signal (such as from a tape deck line out) into the SM5-HP (see page 6). 6. Right (Mono) Jack: This mono (T/S) 1/4” jack feeds a mono signal (such as from a Monitor Output jack) or the right channel of a stereo signal (such as from a tape deck line out) into the SM5-HP (See page 6, 7). LEFT (STEREO) RIGHT (MONO) 9-10 VAC 50-60 Hz 500mA MINIMUM 3 5 6 4 SM5-HP Five Channel Headphone Amplifier

A) Slide the power adapter cable into the cord cinch as shown above, leaving a few inches of cable between the cinch and the cable’s small metal barrel connector. B) Plug the barrel connector into the power supply jack. C) After all other connections are made, plug the power pack into a suitable source of AC line voltage. (See the sticker on the power adapter for voltage requirements.) NOTE: Since the SM5-HP is “always on” when the power pack is plugged in to a live outlet, it is advised that you unplug the power pack (or turn off the AC source) when not using the unit for extended time periods. Muting Feature Note: The SM5-HP incorporates a muting circuit which can silence an output jack whenever its level control is at or very near the fully counter clockwise position. A soft “click” will be heard through the headphones when the muting circuit is engaged. LEFT (STEREO) RIGHT (MONO) 9-10 VAC 50-60 Hz 500mA MINIMUM 9-10 VAC 50-60 Hz 500mA MINIMUM B C A SM5-HP Five Channel Headphone Amplifier

Stereo Headphone Jack Connect the Headphones output jack of a mixing board (or other source) to the Left/Stereo jack of the SM5-HP using a shielded stereo (T/R/S) 1/4” signal cable. Applications: Connecting to the Stereo Outputs of a Recorder Connect the left and right Line Out jacks of a recorder (or other source) to the Left and Right jacks of the SM5-HP using shield- ed RCA cables and RCA-to-1/4” (mono) adapters. LEFT (STEREO) RIGHT (MONO) HEADPHONES LEFT (STEREO) L R LEFT (STEREO) RIGHT (MONO) RIGHT LEFT LINE OUT SM5-HP Five Channel Headphone Amplifier

Mono Monitor Jack: Connect the Monitor output jack of a mix- ing board (or other source) to the Right/Mono jack of the SM5-HP using a shielded mono (T/S) 1/4” signal cable. The signal at the head- phones will be mono, with the same signal on both sides of the phones. LEFT (STEREO) RIGHT (MONO) MONITOR OUT RIGHT (MONO) SM5-HP Five Channel Headphone Amplifier

32 ohms 570mW 50 ohms 400mW 100 ohms 200mW 200 ohms 100mW 300 ohms 67mW 600 ohms 34mW Maximum Gain 12dB Frequency Response 8Hz – 50kHz THD + Noise .09% @ 200 ohms (100mW) Signal to Noise Ratio -90dB @ 200 ohms (100mW, 1kHz) Power Supply Requirements 9–10VAC, 500mA Size and Weight 1.6” H x 5.6” W x 5.5” D; 1.5 lbs (without power adapter) Specifications subject to change without notice. www.crateamps.com ©1999 SLM Electronics, Inc. • A Division of St. Louis Music, Inc. 1400 Ferguson Avenue • St. Louis, MO 63133 47-839-05 • 01/99 SM5-HP Five Channel Headphone Amplifier