Zapco R-IV iPhone 2.2" Digital iPhone Player Interface

Previous Demo. Works Flawlessly.  Complete including box

Signature Edition by Robert Zeff is our no compromise, high-power, audiophile amplifier designed and engineered by Robert Zeff and the staff at Nikola Engineering. This design is taken from Robert's many years of experience in both professional and the car audio industries where he used, repaired, and built high power, high fidelity amplifiers almost every day. With these lessons well learned over 30 years, he finally had the opportunity to make for ARC Audio the no compromise, no limits amplifier he had always dreamt of.

Signature Edition is a High Bias Class A/B amplifier. A simple Class B amplifier uses 2 output transistors to supply the current that moves the speaker. The positive transistor will push the woofer out and the negative will pull it back. In this design, only one transistor is working at any given time. It is the transition between positive and negative that leads to the higher distortion that makes a Class B amplifier unacceptable for audio reproduction. In most cases, a bias circuit is added to a Class B amplifier making it a Class A/B. The Bias circuit improves the distortion by turning on the unused output device while the current is flowing across the other. The more bias you add the lower the distortion, but there is a side effect. Heat is created as output transistors are on at the same time. The more bias you add the better it sounds.

More heat equals more bias until you reach the point of over bias and the amplifier fails. The trick to the Signature Edition Bias circuit is managing the bias current at any temperature. By carefully matching the bias of every amp we are able to maintain stable performance across a wide temperature range. This stability allows us to "dial-in" much more bias than any conventional class A/B amplifier. This is one of the key elements to the Signature Editions' amazingly transparent sound.

The key to running so much bias is heat management. Signature Edition has a unique heat sink design that uses a four-inch fan mounted in the center of the circuit board. The fan forces cool air in a cross-flow pattern through the massive finned heat sink before exhausting from the ends. This design minimizes the effects of installation location on the thermal performance of the amplifier. Mounted upside down, under or behind a seat or beneath a panel; Signature Edition will always perform as intended.

To further improve the dynamics and efficiency the Signature Edition amplifier exclusively use stiffly regulated, fully isolated power supplies. Regulation not only improves the damping factor and overall control of an amplifier but it eliminates any effect of voltage drops in the charging system may have.

As close to brand new as you can get. Units were removed from the box and set on a table for display purposes. Since the factory seal has been broken, the set cannot be sold as new. 100% complete, Never seen power, full warranty applies.

While individual Esotec drivers are available separately to offer complete system building flexibility, Dynaudio has packaged the most popular two-way driver complements with audiophile quality, competition-grade, adjustable passive crossover networks into component system packages to deliver the new Esotec performance quality at the highest level of value possible.

Esotec System 222

Two-Way Component System comprised of:

• 2 each Esotec MW 152 5.75“ MSP-Woofer
• 2 each Esotec MD 102 1.1“ Soft-Dome Tweeter
• 2 each Esotec X-252 Two-Way Passive Crossover

• Frequency Response: 55 Hz – 25 kHz
• Sensitivity: 91 dB
• Continuous Power Handling: 100 Watts
• System Impedance: 4 Ω

As close to brand new as you can get. Units were removed from the box and set on a table for display purposes. Since the factory seal has been broken, the set cannot be sold as new. 100% complete, Never seen power, full warranty applies

In order to perfectly integrate the improved drivers, the Esotec component systems feature new crossover designs updated with optimized parameters. The balanced frequency response of the Dynaudio Esotec automotive loudspeaker series is not simply the result of the superior drivers utilized, but also a product of the accurate fine-tuning in the crossover.

Esotec System 242 GT

Two-Way Component System comprised of:

• 2 each Esotec MW 162 GT 6.5“ MSP-Woofer
• 2 each Esotec MD 102 1.1“ Soft-Dome Tweeter
• 2 each Esotec X-252 Two-Way Passive Crossover

• Frequency Response: 55 Hz – 25 kHz
• Sensitivity: 90 dB
• Continuous Power Handling: 100 Watts 

As close to brand new as you can get. Units were removed from the box and set on a table for display purposes. Since the factory seal has been broken, the set cannot be sold as new. 100% complete, Never seen power, full warranty applies

The Dynaudio Esotec car loudspeakers are perfectly complemented by the company’s various dedicated crossover offerings. The Esotec component system crossovers are truly competition-grade, using the highest quality components throughout.

Custom-produced, hand-selected, top-quality polypropylene capacitors, and custom-wound, high-grade air-core inductors are utilized, as are impedance correction networks and tweeter protection circuits, and independent tweeter adjustment levels for added system set-up flexibility.

Mated to the advanced technology Esotec car series loudspeakers, the net result is a system that delivers authentic Dynaudio sound quality with a neutral tonal balance, incredible imaging and sound-staging capabilities, unsurpassed dynamics, and complete transparency.

Esotec System 362 

Three-Way Component System comprised of:

• 2 each Esotec MW 172 8“ MSP-Woofer
• 2 each Esotec MD 142 3“ Soft-Dome Midrange
• 2 each Esotec MD 102 1.1“ Soft-Dome Tweeter
• 2 each Esotec X-262 Three-Way Passive Crossover

• Frequency Response: 55 Hz – 25 kHz
• Sensitivity: 91 dB 
• Continuous Power Handling: 200 Watts 
• System Impedance: 4 Ω

Helix builds their Esprit subwoofers to fit in places that normal subs won't. Coming in at just 3-1/2" deep, the Esprit E12W 12" shallow-mount sub lets you get creative with placement while giving you impressive bass. German engineering shines through on this sub, as Helix uses technology from their high-end Precision Series to create a super-slim driver that delivers superior performance and handles plenty of power. You'll enjoy highly accurate bass reproduction in applications where space is an issue.

• 12" shallow-mount subwoofer with dual 2-ohm voice coils
• fiberglass coated honeycomb membrane woofer with rubber surround
• die-cast aluminum frame
• power range: 100-400 watts RMS (600 watts peak power)
• frequency response: not available
• sensitivity: 88 dB
• top-mount depth: 3-1/2"
• sealed box volume: 0.90 cubic feet
• ported box volume: 1.75 cubic feet

The The Hybrid Audio Clarus C10SW subwoofers are the ideal multi-format subwoofer speaker system, and are an upgrade for the Imagine-series subwoofer drivers. subwoofers are the ideal multi-format subwoofer speaker system, and are an upgrade for the Imagine-series subwoofer drivers. At home in virtually any enclosure arrangement – from sealed, to vented, to infinite baffle and bandpass – the Clarus range of subwoofers are going to impress even the most critical listener with speed and articulation, bottom-octave authority, with a total inductance profile that is not just low, but flat over stroke, frequency, and power. You’ll know how serious this driver is at first glance as you take in the cast frame and heavy-duty nickel-plated spring-loaded push terminals, but its proof will be upon first listen as the Clarus subwoofer does what it does best: articulating the nuances of your favorite recordings to effectively reproducing significant sound pressure levels.

Basket/Frame - The basket of the Hybrid Audio Clarus C10SW is a cast aluminum design with semi-gloss black powder coating. The frame includes spider venting for improved thermal power handling. The frame includes reverse-roll surround tooling proprietary to Hybrid Audio Technologies, allowing for close tolerance flush and iso-mounting for easy grille clearance and localization clearance.

Motor and Voice Coil - The motor of the Hybrid Audio Clarus C10SW Subwoofer is conventional dynamic with a large, high-grade ferrite magnet assembly with bumped and vented pole piece. The voice coil diameter for the four subwoofers is 51mm (2-inch) for elevated power handling, dissipation of heat (thereby lowering power compression), and maximizing the size of the magnet around the voice coil for enhanced motor compliance. The voice coil is a four-layer, high-purity aluminum, which is superior to copper for heat dissipation, as well as significantly reduced moving mass. The result is an extremely light weight winding, with low inductance and good power handling.

Suspension, Cone, Tinsel Leads & Terminals - The inverted surround is butyl rubber which is highly consistent, and does not suffer the variance of natural rubbers. This rubber surround terminates mechanical vibrations well, having a low stiffness for positive damping of resonances. The spider material was chosen for optimal performance; the spider is a 90/10 cotton/Nomex blend with single-dip low viscosity phenolic. This material provides the stiffness desired without being overly brittle or stiff, where vibrations in the spider are well damped and do not translate into the former or the cone. The Clarus subwoofers are cone-type drivers consisting of a polypropylene diaphragm with low moving mass. Polypropylene provides a good balance of strength, moving mass, and water resistance, in the event the Clarus subwoofers are used in all-weather climates, such as motorcycle, ATV, golf cart, and marine uses. The tinsel leads are bonded directly to the former and brought out to the terminals, which keeps tinsel lead slap to a minimum and does not compromise the structural integrity of the cone. The Clarus subwoofers come equipped with heavy-duty PCB-mounted nickel-plated push terminals, and give the end user flexibility in tinned wire or crimp terminal terminations

All Hybrid Audio Subwoofers are sold individually.

Hybrid Audio Clarus C10SW specs:

The Hybrid Audio Clarus C12SW subwoofers are the ideal multi-format subwoofer speaker system, and are an upgrade for the Imagine-series subwoofer drivers. At home in virtually any enclosure arrangement – from sealed, to vented, to infinite baffle and bandpass – the Clarus range of subwoofers are going to impress even the most critical listener with speed and articulation, bottom-octave authority, with a total inductance profile that is not just low, but flat over stroke, frequency, and power. You’ll know how serious this driver is at first glance as you take in the cast frame and heavy-duty nickel-plated spring-loaded push terminals, but its proof will be upon first listen as the Clarus subwoofer does what it does best: articulating the nuances of your favorite recordings to effectively reproducing significant sound pressure levels.

Basket/Frame - The basket of the Hybrid Audio Clarus C12SW is a cast aluminum design with semi-gloss black powder coating. The frame includes spider venting for improved thermal power handling. The frame includes reverse-roll surround tooling proprietary to Hybrid Audio Technologies, allowing for close tolerance flush and iso-mounting for easy grille clearance and localization clearance.

Motor and Voice Coil - The motor of the Hybrid Audio Clarus C12SW Subwoofer is conventional dynamic with a large, high-grade ferrite magnet assembly with bumped and vented pole piece. The voice coil diameter for the four subwoofers is 51mm (2-inch) for elevated power handling, dissipation of heat (thereby lowering power compression), and maximizing the size of the magnet around the voice coil for enhanced motor compliance. The voice coil is a four-layer, high-purity aluminum, which is superior to copper for heat dissipation, as well as significantly reduced moving mass. The result is an extremely light weight winding, with low inductance and good power handling.

Suspension, Cone, Tinsel Leads & Terminals - The inverted surround is butyl rubber which is highly consistent, and does not suffer the variance of natural rubbers. This rubber surround terminates mechanical vibrations well, having a low stiffness for positive damping of resonances. The spider material was chosen for optimal performance; the spider is a 90/10 cotton/Nomex blend with single-dip low viscosity phenolic. This material provides the stiffness desired without being overly brittle or stiff, where vibrations in the spider are well damped and do not translate into the former or the cone. The Clarus subwoofers are cone-type drivers consisting of a polypropylene diaphragm with low moving mass. Polypropylene provides a good balance of strength, moving mass, and water resistance, in the event the Clarus subwoofers are used in all-weather climates, such as motorcycle, ATV, golf cart, and marine uses. The tinsel leads are bonded directly to the former and brought out to the terminals, which keeps tinsel lead slap to a minimum and does not compromise the structural integrity of the cone. The Clarus subwoofers come equipped with heavy-duty PCB-mounted nickel-plated push terminals, and give the end user flexibility in tinned wire or crimp terminal terminations

All Hybrid Audio Subwoofers are sold individually.

Hybrid Audio Clarus C12SW Subwoofer specs:

The Hybrid Audio Clarus C15SW subwoofers are the ideal multi-format subwoofer speaker system, and are an upgrade for the Imagine-series subwoofer drivers. At home in virtually any enclosure arrangement – from sealed, to vented, to infinite baffle and bandpass – the Clarus range of subwoofers are going to impress even the most critical listener with speed and articulation, bottom-octave authority, with a total inductance profile that is not just low, but flat over stroke, frequency, and power. You’ll know how serious this driver is at first glance as you take in the cast frame and heavy-duty nickel-plated spring-loaded push terminals, but its proof will be upon first listen as the Clarus subwoofer does what it does best: articulating the nuances of your favorite recordings to effectively reproducing significant sound pressure levels.

Basket/Frame - The basket of the C15SW is a cast aluminum design with semi-gloss black powder coating. The frame includes spider venting for improved thermal power handling. The frame includes reverse-roll surround tooling proprietary to Hybrid Audio Technologies, allowing for close tolerance flush and iso-mounting for easy grille clearance and localization clearance.

Motor and Voice Coil - The motor of the Hybrid Audio Clarus C15SW Subwoofer is conventional dynamic with a large, high-grade ferrite magnet assembly with bumped and vented pole piece. The voice coil diameter for the four subwoofers is 75mm (3-inch) for elevated power handling, dissipation of heat (thereby lowering power compression), and maximizing the size of the magnet around the voice coil for enhanced motor compliance. The voice coil is a four-layer, high-purity aluminum, which is superior to copper for heat dissipation, as well as significantly reduced moving mass. The result is an extremely light weight winding, with low inductance and good power handling.

Suspension, Cone, Tinsel Leads & Terminals - The inverted surround is butyl rubber which is highly consistent, and does not suffer the variance of natural rubbers. This rubber surround terminates mechanical vibrations well, having a low stiffness for positive damping of resonances. The spider material was chosen for optimal performance; the spider is a 90/10 cotton/Nomex blend with single-dip low viscosity phenolic. This material provides the stiffness desired without being overly brittle or stiff, where vibrations in the spider are well damped and do not translate into the former or the cone. The Clarus subwoofers are cone-type drivers consisting of a polypropylene diaphragm with low moving mass. Polypropylene provides a good balance of strength, moving mass, and water resistance, in the event the Clarus subwoofers are used in all-weather climates, such as motorcycle, ATV, golf cart, and marine uses. The tinsel leads are bonded directly to the former and brought out to the terminals, which keeps tinsel lead slap to a minimum and does not compromise the structural integrity of the cone. The Clarus subwoofers come equipped with heavy-duty PCB-mounted nickel-plated push terminals, and give the end user flexibility in tinned wire or crimp terminal terminations

The Hybrid Audio Clarus 15 is the perfect balance between intense output and extreme sound quality. Massive 3" voice coil allows for huge power handling yet light enough to be an extreme SQ subwoofer. It is the top choice for use by Hybrid Audio World Championship competition vehicles.

All Hybrid Audio Subwoofers are sold individually.

 Hybrid Audio Clarus C15SW Subwoofer specs:

The Hybrid Audio Imagine I12SW-V2 subwoofers are the ideal multi-purpose sound quality subwoofer speaker driver. Mechanical and electrical parameters are amenable to a variety of vented and sealed enclosures. At home in virtually any arrangement, the Imagine subwoofer is Hybrid Audio’s Stage II subwoofer, boasting exceptional performance and a high-fidelity design philosophy.

The Imagine subwoofers are cone-type drivers consisting of a polypropylene diaphragm with low moving mass. Polypropylene provides a good balance of strength, moving mass, and water resistance, in the event the Imagine subwoofers are used in all-weather climates, such as motorcycle, ATV, golf cart, and marine uses. The tinsel leads are bonded directly to the former and brought out to the terminals, which keeps tinsel lead slap to a minimum and does not compromise the structural integrity of the cone. The Imagine subwoofer comes equipped with heavy-duty PCB-mounted male blade-type terminals on the Imagine I8SW and I10SW, and nickel-plated push terminals on the I6SW-V2 and I12SW-V2, and give the end user flexibility in tinned wire or crimp terminal terminations.

Basket/Frame - The basket of the Hybrid Audio Imagine I12SW-V2 is a stamped steel design with semi-gloss black powder coating. The frame includes spider venting for improved thermal power handling. The frame includes reverse-roll surround tooling proprietary to Hybrid Audio Technologies, allowing for close-tolerance flush and iso-mounting for easy grille clearance and location clearance (such as underneath a seat, in a touring motorcycle saddle bag, or in a center console enclosure).

Motor and Voice Coil - The motor of the Imagine subwoofer is conventional dynamic with a large, high-grade ferrite magnet assembly with bumped and vented pole piece. The voice coil diameter is 51mm (2-inch) for elevated power handling, dissipation of heat (thereby lowering power compression), and maximizing the size of the magnet around the voice coil for enhanced motor compliance. The voice coil is a four-layer, high-purity aluminum, which is superior to copper for heat dissipation, as well as significantly reduced moving mass. The result is an extremely light weight winding, with low inductance and good power handling.

Suspension, Cone, Tinsel Leads & Terminals - The inverted surround is butyl rubber which is highly consistent, and does not suffer the variance of natural rubbers. This rubber surround terminates mechanical vibrations well, having a low stiffness for positive damping of resonances. The spider material was chosen for optimal performance; the spider is a 90/10 cotton/Nomex blend with single-dip low viscosity phenolic. This material provides the stiffness desired without being overly brittle or stiff, where vibrations in the spider are well damped and do not translate into the former or the cone. 

All Hybrid Audio Subwoofers are sold individually.

The Imagine series consist of coaxial pairs designed for the discerning consumer interested in more than just an ‘OEM replacement speaker,’ and an industry favorite in motorcycle, motorsports, and Powersports applications due to its price to performance ratio.

Priced per pair.