SP7 Grand Reference Speaker Cables

 

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Design Theory - Factory - Description & Application - Termination - Warranty - Return - Breakin

 

 

Customers Have Replaced...

Our customers have reported replacing these cables with the Morrow Audio line of cables. Are yours on the list? Nordost Red Dawns, Audience Maestros, Tara Labs ($2500.00), Kimber Select, Kimber Silver Streaks, Virtual Dynamic Master ($2873.00), Transparent Reference $9000.00, Anti-Cables, Audio Art IC-3, Reality Cables, DH Labs Silver Sonic, Monster Cables, Cardas Golden, Straightwire, Analysis Plus Oval One, Audioquest Diamondbacks, King Cobra, Transparent Plus, Audioquest Black mamba II, Purist Audio Maximus, Cardas Golden Reference, Stereovox balanced 600...

"I have been mixing live sound close to 20 years as well as gone through many sound systems over the past 35 years. I have wasted away a lot of money trying to achieve the sound as if one was playing an instrument live. These cables do just that! They don't add any coloration to the music. You feel & hear the real soul of the instruments and vocals. I have had other sound engineers in my home to listen to these cables. Their mouths would drop open & thay would have big smiles on their faces!"

 

Design Theory...Problems With Popular Cable Designs:

The Morrow Audio cables differ in 3 major areas from most other popular and often expensive cable designs. As you read about this, you may realize that your cables have problems in these areas. Do not despair, you now qualify for a dramatic improvement in all areas of sound with the Morrow Audio line of cables. After hearing our properly designed cables, many of our customers replaced the ones they had with our complete cable product line.

 
Cable Design Video

The 3 major design flaws in popular cables...

1. Cables That Use Stranded Wire:
In stranded wire designs, the strands touch each other hundreds of times at various points along the length of the wire, causing the signal to jump from strand to strand instead of flowing through a continuum. The result is a diode effect (like little mV Diodes) at each point where the strands come into contact, causing distortion of the signal; blurring imaging, soundstage cues, etc.

Another explanation of the diode effect is oxide forming between the strands which encourage a non-linear conduction. At the points where this occurs, actual RF detection can occur, turning your cable into a radio; receiving, detecting and injection RF signal and distortions into your music signal.

In my experience with stranded cable, where each single conductor is made from several strands, not insulated from each other, there imparts an unpleasant harshness and brightness to the sound as well as a bloated and non-defined bass.

The Morrow Audio Design:
Morrow Audio signal cables use ONLY solid core wire, NEVER stranded. We eliminate all diode effects by using only solid core wire. You will hear much more information in your music that was lost from the smearing effect that stranded wire produces.

Some of our models contain multiple runs of wire. They are mono strands, individually insulated from each other. In the case of our MA2 Reference interconnect, these multiple runs yield a more detailed sound. The speaker cables, out of power handling necessity, also contain these multiple runs of wire.

"I'm experiencing a realism that I was missing. The soundstage is much larger and more open. Detail is better than ever and the sound is extremely clean, clear and concise. Importantly, it is neutral and not tainted. The dynamics are not over exaggerated but tight and clean. I feel like I'm hearing what the artists intended in their music presentation. In the world of audio you don't know what your missing until you hear what you were missing."

 

2. Cables That Use Large Gauge Wire:
Different frequencies tend to ride at various depths in the wire structure; the highs, mids and lows tend to separate which cause time and phase errors in the signal. This is commonly known as the "skin effect". When a large gauge wire is used, this problem is even greater, resulting in phase and timing errors. The soundstage is reduced, instrument timbre is distorted. See photo below...

The Morrow Audio Design:
Morrow Audio signal cables ONLY use a small gauge wire. The different frequencies ride at the same plane in the wire, resulting in less phase and timing errors. A more accurate sound is the result. The soundstage is huge, instrument timber is accurate, it seems like the performers are in your room.

"I hear a beautiful, natural, extended frequency range top to bottom, with a spacious, airy soundstage. I'm enjoying gorgeous, dynamic music, with a natural sense of performers, instruments, musicianship and recording venue."

 

3. Cables That Use Heavy Insulators:
Some cable designs use large cable jackets or even heavy insulators to insulate their cable.

Inside common cable designs are internal conductors with an extruded insulation of some sort. The insulation material is in close and immediate contact with the conductor along its entire length. One of these conductors might be in the form of a wire mesh that surrounds the center conductor, acting as a shield from RFI.

Wrapped around all this is the outer casing of the cable, made out of rubber, PVC, Teflon or some other material.

These insulation elements all form the dielectric of the wire, which has a tendency to absorb and release energy to and from the conductors. This occurrence produces a negative sonic affect; smearing of the signal and other distortions. The greater the number of insulating layers there are, the greater this distortion will be. The thickness of these layers is also a factor of concern, with thicker layers being the worst.

Have you ever heard of speaker cable lifts? They are little stands that lift the cables off the floor, improving the sound. The improvement comes by keeping the electrical field from reflecting back into the cable off the floor. Why then do cable manufacturers apply decorative mesh, thick insulations and other signal distorting elements in their design?

The Morrow Audio Design:
Morrow Audio cables DO NOT use heavy insulators. Each strand of wire incorporates a very thin insulation and are held together within a thin nylon mesh, except for the MA1 which is open due to its design. This allows the least amount of reflection back into the cable, retaining the quality of the music you love.

With the Morrow Audio cables, your music will flow unhindered, resulting in greater realism as well as a longer and more enjoyable listening session. Those who have have heard our cables describe it as a "Listening Experience".

"Sound stage and details have reached new levels.  The music is richer, revealing unheard vocal styling's and instrumental tones on long standing favorite recordings that I thought I “knew”.  I don’t think I could be more impressed and pleased."

 

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Design Theory - Factory - Description & Application - Termination - Warranty - Return - Breakin

 

Our Factory & The Equipment We Use To Evaluate Our Cables:

Designing and building cables is a tricky business, requiring just the right balance of gauge, wire type and dielectric. It would be foolish to test our designs on a mediocre system. At Morrow Audio, we have only the best in our listening/ testing room, insuring that whatever system our cables go into, that they will provide great satisfaction and musicality!

Our factory likewise provides a good work enviornment for assembly, where each and every cable is handmade by only the best cable technicians, assuring a high level of quality and control.

Our evaluation room and factory. Click each photo for a complete tour.

"I am REALLY impressed with the level of detail these provide. Case in point... playing Jim Messina's newer CD "Under a Mojito Moon", I am now CLEARLY hearing backgound percussion instruments at a level of clarity that were simply not there before (smeared). I also thought psycho-acoustically I was hearing mild distortion thru a right channel midrange, after replay it happed to be the reverberation of an ending note of an acoustic guitar string inside the body of the instrument, which blew me away. Soundstage improved dramatically and bass is a little better defined."

 

Description & Application

A typical order is for a pair of speaker cables (a "pair" being one right channel and one left channel cable). These are offered in standard and bi-wired versions. Price shown is for a 2 meter pair of cables. Other lengths are available and selectable in the shopping cart as well as termination choices and breakin service. Bi-wired cables are also available, selected by the appropriate add to cart icon. Single cables are available for center channel applications in a home theater. All cables are hand made to order.

The SP7 consist of 120 runs of solid core, small gauge, silver coated copper wire which is then silver soldered to the termination of choice. There are two different gauges of wire used in the SP7, allowing a greater continuity of low and high frequencies. This wire has been chosen for the excellent balance of sound that it provides. The SP7 has an attractive appearance and possess excellent RFI and noise rejection. The cable is very flexible and easily managed.

Applications are for hooking up speakers to a receiver, integrated amplifier, power amplifier or monoblocks.

What Are the Differences Between Models? The basic differences between models are the number of wires within the cable structure. As you move up the line, the greater number of wires allow a likewise greater amount of subtleties and details to come through. The soundstage and separation of instruments within that soundstage also increases. The range is from the SP1, which has 12 runs of wire, to the SP7, which has 120 runs of wire within. Being hand made, our cables require a tremendous amount of labor to build. Despite this we have continued to keep the cost down as far as possible, offering great value as well as an unforgettable musical experience.

 

"Mike, First off i would like to say thank you for your cables and for the excitement you brought to my music listening. Unlike most of your customers, i can't really compare your products to the others as i just bought my first hi end system. For whatever reason, i just liked your site, your personality and your videos which make a lot of sense. I decided to give it a shot and i did a right choice. I am very very happy with the results. Great detail, very realistic!"

 

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Design Theory - Factory - Description & Application - Termination - Warranty - Return - Breakin

Termination Options

Cables are offered in standard and bi-wired versions. Cables are the same price up to 2 meters. Other lengths are selectable in the shopping cart.

For the standard as well as the biwired version, the legs of the cable are split 6 inches down from the main body to allow ease of connection to amplifier and speakers. Longer end separations, if desired, can be requested in the special notes area of the shopping cart.

The bi-wired version consist of a single pair of terminations on the amplifier end and two pairs of color coded terminations at the speaker end for the highs and lows. Hookup instructions are provided.

Standard version

Bi-wired version. Instructions included.

Termination options are Nude, Spade and Banana. Combination terminations are also available and are selected in the shopping cart. Nude is the recommended choice for the best sound, then banana, then spade. Nude is the most delicate and must be hooked up and left. No cable swapping save breaking the nude end, although this too is covered by our lifetime warranty.

Terminations offered are nude, banana and spade
Opening across the inside of the spade is 5/16 of an inch.

 

Lifetime Warranty

If your cable ever breaks, for any reason, even abused, we will repair or replace your cable for free. If you trip over your cable, if your pet eats your cable, if your child takes scissors to your cable, if your cable gets tangled in a sweeper, etc, we will repair or replace it for free. You only pay the shipping. Warranty applies to the original owner and is not transferable. Customer must provide purchase receipt with the returned cable.

 

60 Day Return Policy:

• 60 day returns on all new cables.
• Receive 100% of your money back, less shipping.
• The 60 day return window begins the day you receive the cables.
• Experience what our cables can do for your music, no obligation!

See the complete return policy here.

Breakin Time

We have provided a paper explaining the break-in process and what you will hear. In it are actual customer testimonials and what they heard at the different stages of breakin. This paper is also supplied with your order.

Breakin Service

Our break-in service is also available, saving you the time and hassle of breaking in your cables. This allows you to avoid the "difficult stage" of the break-in process. Save wear and tear on your valuable equipment (and ears) by allowing us to break-in your cables for you!

Standard break-in service, only $FREE: We supply 2 days on our break-in machine, equal to about 96 hours of actual music. This gets you past the "difficult" stage of the break-in, allowing you to listen right away, realizing better and better sound as further time is put on the cables.

Extended break-in service, only $25.00: We supply 5 days on our breakin machine, equal to about 240 hours of actual music. With this service, you receive the cables pretty much fully broken in. Please allow another 100 hours after hookup to settle into your system.

Cables breaking in on the breakin board at our factory.

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Design Theory - Factory - Description & Application - Termination - Warranty - Return - Breakin

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