User manual headlines unpacking 2 warnings 2 user responsibility 2 1. Speaker damage 2. Speaker output hazard. 3. Radio interference. Introduction 3 1. Front panel 2. Rear panel installation 4 1. Mounting 2. Cooling 3. Operating voltage 4. Grounding 5. Power consumption 6. Input connections 7. Conne...
Unpacking carefully open the shipping carton and check for any noticeable damage. Every lab.Gruppen amplifier is tested and inspected before leaving the factory and should arrive in perfect condition. If found to be damaged, notify the shipping company immediately. Only the consignee may institute a...
Introduction thank you for purchasing a lab.Gruppen power amplifier. This manual contains important information on operating your amplifier correctly and safely. Please take some time and read this manual to familiarize yourself with the amplifier. The front panel figure 1. Front panel 1. Carry/prot...
Please refer to diagram on page 3 1. Speaker connector this type of speaker connector may be unfamiliar to some users. A full description is found in the operation section. (see page 6). 2. Clip limiter switch. Turns the clip limiter on and off. 3. Input jack alternative to using input xlr or for li...
There is no ground lift switch or terminal on this amplifier. The signal ground is always floating via a resistor to chassis and the grounding system is automatic. If a potential above 0.6v presents itself between signal ground and chassis ground, a short circuit is introduced between the two, there...
Sleeve shield/ground figure 4. Trs phone plug the input impedance is high enough (20 kohms balanced) to allow ”daisy-chaining”, or multiple parallel input connections. To daisy chain, use the trs jacks provided on each channel. The input circuits also have a high enough headroom, to accept the maxim...
8. Impedance matching (mls-switch) the mls switch is located on the rear panel with a led indicator showing then the switch is depressed and in the 2 ohms position. The mls ( minimum load select ) switch offer a impedance matching, so you can drive the lab 1600 in 2 ohms without increased heat losse...
4. Stereo reverse this mode is similar to the tandem mono mode. Apart from depressing the link switch , you also depress the phase reverse switch, like in the bridge mono. Channel b is now phase reversed. To compensate for that, connect pin +1 on channel b speakon to speaker negative terminal and pi...
• when the clip limiter is engaged it flickers briefly. • when the clip limiter is not engaged it lights for a longer period. The remaining yellow leds indicate if any protection circuits are activated. These are described below. Protection features each lab.Gruppen amplifier has many advanced prote...
D.C. Protection there are two types of dc protection: fuses on the supply branches of each channel (this is an iec 65 requirement). A crowbar bar protection that shorts the output. Both these circuits come into effect once a dc level of 10 volts or more is detected on either channel. Design features...
Lab.Gruppen amplifiers are designed to meet the iec65, a stringent electrical safety approval from the international electro-technical commission. The iec65 is recognized world-wide with most countries having an equivalent. Emc approvals emc stands for electro magnetic compatibility. This implies th...
Appendix a mains voltage selection lab 1600 is normally shipped for 230 volt ac operation only. For export there is a 115/230 volt ac option available. To check if the amplifier is equipped with this option, please follow these steps: 1. Make sure that the lab 1600 is unplugged from the mains voltag...
Warranty and disclaimers • general this product is manufactured by lab.Gruppen and is warranted to be free from defects in components and factory workmanship under normal use and service, for a period of one year from the date of original purchase. During the warranty period, lab.Gruppen or its nomi...
