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Gold Seal Series Amplifiers
Models GS-35, GS-60, GS-100, GS-150, GS-250
The Bogen Gold Seal Series amplifiers are an extraordinary addition to Bogen's line of quality audio amplifiers. Designed
with the sound contractor in mind, they provide unparalleled flexibility and versatility, without the need for expensive add-
on modules.
Unlike other typical amplifier lines, the professional sound contractor need not purchase a higher-powered amplifier just to
get more extensive features or flexibility.
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© 1997 Bogen Communications, Inc. 50 Spring St., Ramsey, NJ 07446 Publication No. 54-5941-04 9903 Printed in Korea All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Bogen Communications Inc. Notice: The information contained in this document is sub- ject to change without notice and should not be construed as a commitment by Bogen Communications, Inc. Bogen Communications, Inc. assumes no re
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Contents Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Important Safety Instructions 1. Read and understand all instructions. 2. Follow all warnings and instructions marked on the product. 3. Unplug the product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. 4. Do not use this product near water. 5. Do not place this product on an unstable cart, stand or table, where the product may fall, causing serious damage to the product. 6. Slots and openings in the cabinet and the back or bo
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Features Front Panel (All Models) 3 4 7 8 1 2 5 6 9 10 1. MIC 1 to 4 - Individual level controls for dedicated microphone inputs. 2. MIC 5/TEL - Individual level control for Mic or Tel input depending on input mode selected. 3. MIC 6/AUX 1 - Individual level control for Mic or Aux 1 input depending on input mode selected. 4. AUX 2 - Individual level control for dedicated Aux 2 input. 5. Contour - Enables or disables loudness equalization. Affects only Aux 2 and Mic 6/Aux 1 if set in aux mode. 6.
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Features Rear Panel (GS-35, GS-60, GS-100 & GS-150) 1 5 7 22 14 16 18 19 20 12 17 3 4 10 9 11 6 8 21 2 13 15 1. Amplifier Output - Terminal strip containing all the Gold Seal output taps. 2. VOX - Variable control for adjusting TEL input signal level trigger point for automatic muting of Aux input (works only in the TEL input mode). 3. REMOTE MSTR - Screw terminal pair for connection of remote master volume control (Bogen model: GSRVC). 4. MIC/AUX/TEL PRECEDENCE - Screw terminal connections tha
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Features Rear Panel (GS-250) 18 1 14 22 21 16 19 20 8 2 12 6 17 3 4 5 7 23 10 9 11 13 15 16. MIC 6/AUX 1 - Switch selects either MIC 6 or AUX 1 connections as input. 17. AUX 1 - RCA unbalanced input for Aux 1 input signal (works only when AUX 1/MIC 6 switch is set to AUX 1). 18. MIC 6 - Screw terminals for balanced microphone (active only when AUX 1/MIC 6 switch is set to MIC 6). 19. MIC 5/TEL - Dual function Screw terminals for either balanced microphone or 600 ohm balanced input from telephone
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Front Input Connections Installation Note source to the AUX 1 RCA jack (only works when the Keep input leads away from the output leads and AUX 1/MIC 6 switch is in the AUX1 position). AC power cables. Unless the driving source pro- vides a low-impedance output, keep the input lead AUX 2 under ten feet in length. Make all connections to The AUX 2 input uses an RCA plug the unit with the POWER switch in the OFF posi- and accepts input from a dedicated tion. AUX source. MIC 1- 4 Phantom Power fo
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Input Connections Precedence Connections Remote Volume Control Precedence connections allow any combination of If remote volume control is desired, connect the Bogen inputs to be completely muted with a contact closure. accessory GS-RVC remote volume control to the Closing a contact across any of the precedence termi- screw terminals marked REMOTE MSTR. Wire length nals and the PREC COM 1 terminal will mute that can be up to 1000 feet using 22 gauge wire. input. A customer-supplied normally-ope
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Output Connections Output Terminal Strip To Power Amp The Gold Seal Series amplifier may be used to drive an external power amplifier (can only be used with unbalanced high impedance inputs). 4Ω Output LINK shorting clip Note: Shorting clip between GND/COM on the Shorting Clip - Leave for unbalanced lines. speaker output terminals strip must be installed to Remove for balanced lines use this feature. Speaker systems are connected directly to the speak- Pre Out/Power In Jacks er output terminals
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Operation The rear panel AX adjustment controls Power Switch the mix of the Aphex effect with the audio The POWER switch applies signal. Counterclockwise rotation of the power to the unit. The switch control minimizes the Aphex effect. will illuminate when power is Clockwise rotation of the control maxi- on. mizes the Aphex effect. Dual Function Acoustic Equalizer Individual Volume The unique dual-function equalizer can be used for Controls acoustic shaping or for feedback control. Each input i
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Operation VOX Telephone Paging Control The telephone page input features The MIC 5/Tel volume control on the front panel con- voice activated Aux muting. This trols the volume of the telephone paging input when feature always mutes AUX 2 and the control is set to the Tel mode (See page 6 for infor- only mutes AUX 1 when the mation on setting the Tel input mode). AUX1/MIC 6 is set in that position. The Tel input mode uses voice activated triggering for The VOX control should be set so that only
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Troubleshooting Amplifier will not turn ON. On the GS-35, GS-60, GS-100 and GS-150, depress the circuit breaker. On the GS-250, check the fuse. Replace fuse only with same type and rating. No output on 70V, 25CT, or 25V. Check that the LINK switch on the rear panel is in the IN position or external signal-processing equipment, if used, is functioning Make sure that the shorting clip on the DIRECT OUT 4Ω output is in place. No telephone output. Make sure that the MIC 5/TEL switch is in the TEL
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Bogen Service Caution Warranty Service There are no user-serviceable parts within the If you are shipping the unit for a warranty repair, pack amplifier. Have all internal servicing performed by it in the original shipping container or similar container a qualified technician. The warranty may become and ship prepaid via any responsible carrier. Include a void if repairs are performed by other than the letter stating the problem and proof of purchase show- Bogen Factory Service Department. ing
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Technical Specifications Power Rating (RMS): GS-35 — 35 watts GS-60 — 60 watts GS-100 — 100 watts GS-150 — 150 watts GS-250 — 250 watts Frequency Response: Transformer Output — 65Hz to 20KHz +0/-2dB @ -2dB Direct — 20Hz to 20KHz, +0/-1dB @ rated power Distortion: Direct — 0.5% (max.), 0.3% (typ.), 20Hz to 20KHz Transformer — 0.5% (max.), 0.3% (typ.), 65Hz to 20KHz @ -2dB Signal-to-Noise Ratio: Fundamental — -94dB or better; Aux 1 & 2 — -70dB Tel — -70dB or better @ 600 ohms Mic 1 - 6 — -60dB
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50 Spring Street, Ramsey, NJ 07446 Tel. 201-934-8500 Fax: 201-934-9832 www.bogen.com
