SETUP FOR VMPS V60 LOUDSPEAKER SYSTEM

0 Members and 1 Guest are viewing this topic. Read 1957 times.

John Casler

SETUP FOR VMPS V60 LOUDSPEAKER SYSTEM
« on: 4 Apr 2007, 01:56 am »
SETUP FOR VMPS V60 LOUDSPEAKER SYSTEM


1.   Uncrating.  The V60 ships in three crates, one each for the “Wings” and one containing the two bases.  You will need two persons to handle the assembly of the wings and base sections.  Once you have unwrapped all three parts of the shipment install the wooden pegs (6 per side) into the Wing  so that they protrude about 1”.  Make sure when installing the Wing on the base that you do not put weight on the pegs, as you can split open the Wing if you do.  Using two persons lift the Wing onto the base, lining the pegs up with the holes in the base section.  Do not use glue.  The two sections make a tight fit.

2.   Locate the small gauge twisted pair of wire from the tweeter.  Locate the binding posts marked “Tweeter” on the top of the base and unscrew the red binding post nut.  Slide the red (+) ring terminal over the post and tighten the nut.  Similarly remove the black Tweeter BP nut and slide the black (-) ring terminal over the post and tighten the nut.  Make a tight connection.

3.   Locate the thicker twisted pair of wire from the mid panels and attach them to the MIDRANGE binding posts on the base, red to red, and black to black.  You can tighten the nuts with a ½” nut driver if desired, however be careful not to overtighten or you can snap the post off. 

4.   Remove the waveguide (slotted grill)and take off the film or tape covering the tweeter.  Replace waveguide.

5.   Locate the crossover box.  You will note three twisted pairs coming from it.  Attach the thick wires to the BASS input on the base of the speaker, using the same technique as above of removing the BP nuts, sliding the ring terminals onto the posts red to red and black to black, then tightening the BP nuts.  Similarly attach the MIDRANGE wire (skinnier twisted pair) to the MIDRANGE inputs, and the treble wire (thinnest twisted pair) to the TREBLE inputs.

6.   Set the level controls on the crossover box at “0” or NORMAL for the mids and 1 o’clock (just past “0”) for the treble as a starting position.  You may adjust these for taste later.

7.   If you are using a single amp to drive the V60, leave the jumper wires on the inputs in place.  You can attach the speaker wire to either input.  The BASS input for biamping is on the right when seen from behind the speaker, MID/TREBLE is on the left. Remove jumper wires when biamping.

8.   Slide the speaker into the desired room position.  Toe them in slightly towards the listening position.  The foam damper in the back of the wing should be placed to start about flush with, or an inch or so inwards of, the back or widest part of the “V”.  You can experiment with damper placement.  Usually in a reflective room the starting placement will be optimum, in an absorptive environment you may even remove the damper.

9.   If you have a single subwoofer, hook up the amplifier to it with a section of speaker wire about 5ft long.  Connect the output from your preamp or source to the L or R inputs on the back of the amp.  Do not use the single mono input (LFE), as it bypasses the crossover.  For full output from the amp drive both L and R inputs with a signal.  You can use a Y-connector to do so if you have two subs, or connect both LF output channels to the L and R amp inputs of a single sub.

10.   Set the “Crossover” frequency on the amp to 71Hz.  You can change this a few Hz in either direction, listening for maximum clarity.  Set the Level control at about 12 noon to start and adjust it  up and down for maximum bass clarity and extension. 

11.   The amp is equipped with a single band parametric EQ which you can use to defeat the most prominent room mode.  We suggest using this EQ to damp out the floor-to-ceiling room mode which you can calculate by dividing 565 by the height of your ceiling in feet.  For example, if your ceiling is 8 ft tall, the setting of the EQ frequency should be 70.6 Hz.  Use a .25 BANDWIDTH and reduce level to taste, usually 4 to 5 dB.

12.   If you are using a single sub with the V60 place it somewhere between the two main sections for best balance.  You may adjust the bass damping of the VSS and VLA subs by removing small amounts of putty from the center of the bottom-firing PR; instructions for “Putty Pinching” are on our Forum at www.audiocircle.com.

13.   You can experiment with all the level control and amplifier settings to suit your room and equipment.  This will take a few hours to a few weeks.  It’s fun and educational, so don’t be afraid to try different settings to decide which work best with your gear and listening environment.

14.   You may place spikes under the base of the main speakers if desired; however this will necessitate a change in crossover frequency and bass level which is hard to predict.  We recommend spikes 1”H or lower.

15.   Play the system at a VERY LOW level and make sure that you have connected everything properly.  The bass section only plays to 70Hz but you should hear only bass from these drivers.  To check your connections, disconnect one of the bass wires to the base of the system so that you hear only mid and trebles.  Then turn the Midrange control all the way down.  You should only hear treble.  If the tweeter appears to be reproducing frequencies lower than 5kHz you have have incorrect connections.  The diaphragm will stretch or tear if the tweeter is fed midrange or bass frequencies, so go slowly.  Once you have assured yourself the tweeter is playing only treble frequencies, turn the midrange back up to the “0” or normal setting and increase volume to the desired level.

16.   Operation with both Waveguides attached gives the smoothest sound and 180 degree dispersion.  Operation without the Waveguides gives the brightest and most forward sound with narrow dispersion.  You can try one Waveguide on and one off for a combination of dispersion and treble sparkle. 

 

« Last Edit: 4 Apr 2007, 07:17 pm by John Casler »

John Casler

Re: SETUP FOR VMPS V60 LOUDSPEAKER SYSTEM
« Reply #1 on: 28 Nov 2007, 05:23 pm »
unsticky