Jantzen Audio Alumen Z-Cap 0,47 – 10 µF +/- 5% 100 VDC Pure Aluminum Foil Capacitor

Description

The Alumen Z-Cap is Jantzen Audio’s specialized pure aluminum foil capacitor, engineered for natural tonal balance, smooth textures, and organic presentation — especially in midrange and tweeter paths of high-end speaker systems. It combines audiophile-grade materials with a voicing tuned for musicality over analytical precision.

🔧 Specifications:

• Capacitance Range: 0.47 – 10.00 µF

• Tolerance: ±5%

• Voltage Rating: 100 VDC

• Dielectric: Polypropylene film

• Conductor: Pure aluminum foil (not metallized)

• Construction: Hand-assembled, wax-damped, low-resonance structure

• Leads: Axial tinned copper

• ESR: Extremely low

• Inductance: Minimal — non-inductive winding

🎧 Sound Profile:

• Warm, smooth, and natural, with beautiful midrange body

• Not bright or sharp — tuned for musical flow and coherence

• Exceptional for vocals, strings, acoustic instruments

• Slightly less “clinical” than Silver Z-Cap or Amber Z-Cap

✅ Best For:

• Tweeter and midrange sections in systems aiming for realism over ultra-detail

• Loudspeakers voiced for jazz, classical, vocals, acoustic music

• Audiophile upgrades where tone and timbre are more important than hyper-resolution

PRODUCT FEATURES
The Alumen Z-Cap is a high-end pure aluminum foil capacitor, designed specifically for passive crossovers (tweeters and midrange drivers).
It utilizes a much thinner dielectric insulation compared to the market standard.
A high voltage rating is not needed for application related to passive loudspeaker crossovers.
The usage of a thinner dielectric insulator allows for a capacitors with less “memory” and one that is much faster reacting.
The Alumen Z-Cap offers unparalleled value for money in terms of cost versus performance.
Compared to the Superior and Silver Z-Caps (Super MKP / double metallized polypropylene foil) capacitors, the Alumen Z-Cap will bring less brightness and a little more natural top end balance to your system.
Ideal for audio aficionados who prefer a slightly less bright system, while also hearing improvements in the overall naturalness/neutrality of the whole system.
Due to the max. 100 volts DC voltage rating, we advise customers to be mindful when using Alumen Z-Caps for tube/valve and power amplifier application.
For upgrading the coupling capacitors in amplifiers, we instead recommend choosing our Superior or Silver Z-Caps (Double-foil Super MKP capacitors).

KEY INNOVATIONS
• Ultra-thin dielectric insulation to eliminate memory effect in the capacitor
• An extremely fast reacting capacitor
• Very low ESR, SEL, inductance and dielectric absorption data
• High quality pure aluminum foil wound with highly specialized machinery and precision winding techniques
• Specifically designed for the tweeter and mid-range section of passive crossovers
• Can also be used as coupling capacitors for transistor amplifiers

TECHNICAL DATA
Type: Non polarized pure aluminum foil capacitor
Dielectric: Polypropylene film
Construction: Four-layer round tubular type axial leads
Winding: Aluminum foil spliced to polypropylene insulation film
Rated Voltage: 100 VDC / 65 VAC
Test Voltage: 150% rated voltage
Electrodes: Pure copper foil
Contacts: Non-inductive zinc thermally sprayed extended film
Coating: Gray plastic tape wrapped black resin, sealed in an anodized aluminum tube
Leads: Tin plated oxygen free pure copper
Capacitance Range: 100VDC from 1.0 μF to 10μF
Capacitance tolerance: ±3% (on nominal value)
Dielectric constant: Non-polar dielectric
Dissipation factor: Extremely low
Dielectric absorption factor: ＜0.5% @20℃
Dielectric thickness: PB=4μm
Equivalent series resistance: Extremely low
Self-inductance: 0 nH
Insulation resistance: ＞100.000 MΩ@20℃
Temperature coefficient: -200℃x10-6/℃
Temperature Range: -55℃to +85℃
Metal layer thickness: PB=0.3μm
Metal layer conductivity: PB =1.2 Ω/cm2

⚖️ Compared to Other Jantzen Capacitors:

💡 Bottom Line:

The Alumen Z-Cap is for listeners who care about natural emotion and musical realism, not sterile precision. It’s an ideal choice when voicing speakers for warmth, tone, and long-term listening enjoyment, especially in mid and tweeter paths.