May 5, 2026

70V/100V vs Low-Z vs Dante: Pick the Right Audio Topology in Five Minutes

About the author:

Travis Cawthorne

Director of Products & Training, Kramer Americas

Every project has a moment where the audio plan either stays simple or starts multiplying. It usually comes down to one decision: 70V/100V, low-impedance, or Dante.

That choice shapes amplifier sizing, cable paths, zoning, paging, commissioning time, IT requirements, and the most expensive line item of all, truck rolls.

Here is a fast way to choose the right approach, based on what the building needs today and what your customer is likely to ask for tomorrow.

Start with the building, not the gear

Before anyone debates voltage or protocols, get these answers:

Is this one room, or a building full of rooms?
Is paging required, now or later?
Will the customer add zones, move walls, or expand within the next year or two?
Is IT expecting AV to behave like a managed network service, or like a standalone system?

Those four questions get you to the right topology faster than any spec sheet.

70V/100V: The scalable distributed-audio default

70V/100V is the topology you choose when the job is coverage at scale: many speakers, longer runs, predictable zoning, and paging that works reliably. It stays stable as the building grows, which is why it shows up in so many commercial standards.

70V/100V is not about maximum fidelity. It is about coverage, predictability, and paging at scale.

Use 70V/100V when you hear:

“We need background music everywhere.”

“Paging has to be clear and reliable.”

“This is phase one, more rooms are coming.”

Where 70V/100V projects get messy is not the topology. It is when the speaker plan becomes a mix-and-match of unrelated models, brackets, grilles, and accessories, and suddenly every room has its own install story.

Features vary by model, but the point of standardization families is simple: keep install and commissioning repeatable across room types.

How Kramer makes a 70V/100V standard easier to execute

Standardization is what keeps a distributed system from turning into a collection of one-offs. A simple approach covers most commercial spaces: in-ceiling for the bulk of rooms, on-wall for open ceilings and retrofits, and all-weather for outdoor areas.

In retrofit-heavy projects, a low-depth in-ceiling model with selectable 70V/100V taps and an 8 ohm option is ideal, because it gives you flexibility without changing the footprint mid-job. In Kramer’s lineup, CL-6P-LP is that example. It is built for tight plenums, keeps rough-in consistent, and avoids the common “we can’t fit that backcan” surprise that shows up late in the job.

For the rest of the building, consistent form factors keep the install predictable: CL for in-ceiling, WM for wall-mount, and AW for all-weather. Details like front-access adjustments, magnetic paintable grilles, and accessory consistency across the family reduce ladder time and trim-out variability.

Low-impedance: The clean choice for smaller rooms

Low-impedance, often 8 ohm, is the topology for rooms where you want headroom and control without building a distributed system. It is often the cleanest choice when the room is self-contained and the speaker count stays small.

Use low-impedance when you hear:

“It’s a single conference room.”

“Sound quality is important to us.”

“This does not need paging, and it is not going to grow.”

Where low-impedance gets people into trouble is when it quietly spreads. A few rooms become ten. Ten become thirty. Now you have amplifier channel sprawl, inconsistent zoning, and an expansion plan that reads like a patchwork quilt.

If low-impedance is on the table, keep wiring topology intentional, including home-run and amplifier channel planning, because it does not scale gracefully.

How Kramer makes a 70V/100V standard easier to execute

The practical move is to treat low-impedance as a room profile, not as a building strategy. That is where a standardized speaker approach helps even when you are not using a distributed topology.

For finished ceilings, teams often standardize on an in-ceiling look and footprint, then choose the topology by room. In Kramer’s lineup, that could mean staying consistent with the CL family for conference rooms and huddle rooms, then using low-impedance where it fits.

In tight plenum situations where depth becomes a constraint, CL-6P-LP is an option that keeps the in-ceiling footprint consistent while supporting an 8 ohm approach.

For open ceilings or spaces where cutting the ceiling is not practical, having a go-to wall-mount standard prevents small rooms from becoming one-off installs. This is where WM form factors keep placement repeatable and help the room feel consistent with the rest of the building.

The goal is not to make low-impedance “the building standard.” The goal is to keep small-room specs consistent so they do not become a separate ecosystem.

Dante: The right move when the system will change

Dante earns its place when the customer wants flexibility, growth, and visibility. It is rarely necessary for one room, but it can be a game-changer for campuses, multi-zone facilities, and environments where routes and zones will shift over time.

Use Dante when you hear:

“We will re-zone and reconfigure.”

“We want centralized routing across the building or campus.”

“We want to expand without pulling new analog runs.”

“IT wants AV to be managed, monitored, and standardized.”

Where Dante fails is predictable: it gets selected for the promise of flexibility, but nobody owns the basics that make it reliable.

If Dante is on the table, lock these before the job is too far along:

VLAN and QoS expectations
Multicast policy
PoE budget with real headroom at the switch
Firmware update ownership and cadence
Network change control, including who can touch VLAN, QoS, and multicast settings when something breaks
Naming conventions and labeling so endpoints are never “mystery devices”

If paging has life-safety implications, align early on the paging and emergency communications approach and responsibilities.

Once those fundamentals are in place, the conversation shifts from “will this work” to “how fast can we commission it.”

How Kramer helps make Dante predictable from install to commissioning

In a Dante topology, repeatability matters. This is less about “adding Dante” and more about deploying endpoints that behave predictably room after room.

Kramer’s Dante-enabled speaker options let you match the physical form factor to the space without changing the topology:

CL-6D and CL-8D for in-ceiling Dante (PoE) endpoints
WM-6D and WM-8D for wall-mount Dante (PoE) where ceiling access is limited
AW-6D and AW-8D for all-weather Dante (PoE) in outdoor and transition zones
PN-6D for pendant Dante in open-ceiling spaces

On the commissioning side, what makes deployments smoother is not a single tool, it is discipline. A documented naming convention, a repeatable endpoint setup process, and consistent DSP presets by room profile are what keep a multi-room rollout from becoming artisanal.

Cost reality is part of the decision too. Dante often shifts cost from amplifiers and copper toward switch ports, PoE budget, and commissioning discipline.

The five-minute decision filter

The decision needs gates, not vibes.

Step 1: Choose based on complexity, not just zone count

Zone count can be a helpful proxy, but complexity is the real driver.
A typical pattern looks like this:
• One to two simple zones often stay clean with low-impedance
• Multi-zone background music and paging often stay clean with 70V/100V
• Frequent routing changes, expansion, and monitoring needs often point to Dante

Step 2: Decide how serious paging is

Paging required often pushes you toward 70V/100V for distributed simplicity, unless the building is already standardized on networked audio with clear ownership.

Step 3: Assume the building will expand

If the customer hints at growth, do not design something that becomes painful to scale. Choose 70V/100V for distributed simplicity or Dante for networked flexibility, based on IT readiness.

A one-box topology matrix

70V/100V wins when: paging, long runs, lots of speakers, simple zoning

Low-impedance wins when: one room, few speakers, headroom, audio quality

Dante wins when: routes change, endpoints need monitoring, expansion, centralized routing

Quick picks by space type

Corridors, lobbies, common areas: 70V/100V with an in-ceiling standard, use CL-6P-LP when tight plenums or retrofit constraints show up.

Retail and hospitality zones: 70V/100V with an in-ceiling standard, add PN-6D in open-ceiling spaces, use Dante endpoints when zoning and routing will change

Outdoor entry, patio, spill zones: 70V/100V outdoors, or Dante when the project is already networked, using AW-6D or AW-8D

Small conference and huddle rooms: low-impedance in smaller spaces, use CL-6P-LP where depth is a constraint, use WM wall-mount when ceiling access is limited, passive or Dante depending on topology

Divisible training and multipurpose rooms: 70V as the distributed default, move to Dante endpoints such as CL-6D or CL-8D when reconfiguration is frequent

Campuses with centralized routing and growth: Dante endpoints across room types, using CL-6D/CL-8D for ceilings, WM-6D/WM-8D for no-ceiling-access rooms, PN-6D for open ceilings, and AW-6D/AW-8D for outdoor zones

Avoid these mistakes

Mixing 70V/100V and low-impedance without a rule, then discovering the amplifier plan no longer works
Building a large multi-zone system in low-impedance and hoping it stays small
Choosing Dante without agreement on VLAN, QoS, naming, and firmware ownership
Underestimating PoE and discovering switch limits during commissioning
Waiting too long to lock zoning, then redesigning under pressure

A simple standard that keeps projects predictable

Default to 70V/100V for multi-room background music and paging
Use low-impedance for smaller rooms where headroom matters and scale does not
Use Dante when zones will change, expansion is expected, and IT is aligned

Then treat truly different spaces as exceptions. Theaters, performance venues, and high-SPL entertainment spaces deserve a different playbook.

The best topology choice is the one that stays easy six months after the install, when the customer adds rooms, asks for a new zone, or wants paging to reach a different area.

Start with how the building will be used and how it will change. Then pick 70V, low-impedance, or Dante accordingly. Once that decision is made, the job gets easier when your speaker approach is standardized, CL for ceilings, WM for walls, AW for outdoors, and PN-6D where open ceilings call for pendants. That is how you reduce surprises, protect margin, and keep support calls to a minimum.

Make some noise with Kramer’s audio solutions