Manfrotto Car Amplifier V4 User Manual

Quicksilver Audio V4 Mono Amplifier  
Operating Instructions  
Thank you for purchasing the Quicksilver Audio V4 Mono Amplifiers. These amplifiers have been  
engineered to have a very wide bandwidth, extremely low distortion and superior dynamic range.  
The output transformer used in this amplifier is based on the best designs of the past but uses superior new  
materials to achieve a very high level of performance. The high frequency characteristics of this transformer  
are so stable that many different output tubes may be used without the need for circuit changes or  
compensation adjustments.  
This is an all tube design and uses no circuit boards or transistors.  
PLACEMENT  
TheV4MonoAmplifiersshouldhaveatleast6inchesofventilationspaceoneithersideandatleast  
6 inches above them. If this is not possible, then use a fan for cooling.  
SPEAKER CONNECTION  
Five-way binding posts are used for speaker connection. For better sonic performance, we  
recommend using the screw-down part of the post rather than banana plugs to connect your  
speaker wire. Make sure the ends of the speaker leads do not touch each other. The rating on the  
back of your speaker system will determine whether you use the 4 or 8 ohm tap for the positive  
lead. Connect the negative or ground to the black post marked C.  
IEC connector  
Input  
100K  
fuse  
C
8
4
4 amp  
SYSTEM GROUNDING  
At least one component of your system should always be grounded. Your Mono Amplifiers  
come with three pronged grounded AC plugs. In some systems, where the preamp is also  
grounded, agroundloopmayappearasalowlevelhum. UsinganadaptorontheACplugofeach  
amplifier, to lift the ground, will solve this problem.  
4 AMP SLO-BLO FUSE  
Standard fuse value must not be exceeded. If a fuse blows, replace and check output tube bias. If  
there is a large change in any tube, then that tube is probably damaged. If the bias has not changed  
then the cause of the fuse blowing may be due to other problems, such as poor system grounding,  
unstable preamp, shorted speaker, etc. Interchanging the amps between channels will help  
localize the problem to either the system or the amplifier.  
Quicksilver Audio V4 Mono Amplifier  
SPECIFICATIONS  
Power Output  
120 watts into 4 or 8 ohms  
from 22 Hz to 40 KHz  
18 Hz to 80 KHz  
180 watts at 1 KHz  
1.5 volts  
Power Bandwidth  
Peak Power  
Input Sensitivity  
Input Impedance  
100 K ohms  
Tube Complement  
1 - 12FQ7 input  
1 - 12BH7 or 12FQ7 driver  
2 - KT88 outputs  
Dimensions  
Finish  
7 7/8” high x 13 3/4“ deep  
x 16 3/4” wide  
Nickel chassis  
Carbide black capacitor and transformer cover  
Weight  
Warranty  
51 lbs.  
3 years parts and labor  
Tubes 90 days  
WARRANTY  
Quicksilver Audio warranties your amplifiers for a period of 3 years from the date of purchase  
(90 days on tubes.) Parts and labor are provided free of charge as long as the failure was not  
caused by misuse, accident or negligence. Shipping to the factory is not included.  
Retain at least one packing carton in case a unit needs to be returned for service.  
Quicksilver Audio  
11880 Upham Street, Unit E  
Broomfield, CO 80020  
(303) 469-0024 / Fax 469-0234  
www.quicksilveraudio.com  

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