Whole house audio wiring is cheap to get right while the studs are open and expensive to fix once the drywall is up. The cable plan decides where the amplifiers live, which rooms get their own volume and whether a keypad can be added later. This guide sets out the layout most installers use: home runs from every room to one rack, control at the room, and labels on everything.
How do you wire a whole house audio system?
Run speaker wire from every room back to one central equipment location, a home run per room or zone. Bring it first to a volume control or keypad box at the room entrance, then out to each speaker. Add a Cat6 run to every control location, prewire before drywall, and label both ends of every cable.
Whole house audio wiring starts at one central rack
In a distributed system, the sources and amplifiers sit in one place: a rack in a closet, basement or utility room. Every room’s speakers are wired back to that point, so each room or zone can get its own amplifier channel, its own source and its own level. See choosing an AV equipment rack for the head end.
The alternative, chaining one room’s speakers off the next, saves cable on day one but ties the rooms together for good. With home runs, a room can be added to a new amplifier, moved to another zone or disconnected without opening a wall.
Speaker wire home run: rack, room control, speakers
The usual speaker wire home run has two legs:
- Rack to the room’s control location: one 4-conductor cable carries left and right for the room’s pair of speakers.
- Control location to each speaker: a 2-conductor cable to the left speaker and another to the right.
Running through the control box first means the volume control sits between the amplifier and the speakers, which is how a passive wall control works. With no control, the legs are joined straight through in the box.
The cable size depends on the run length and the speaker load, not on the layout; work it out with our speaker wire gauge guide, which also covers the in-wall CL2 and CL3 ratings.
To estimate the cable order, total each leg. As a worked example, assume five rooms, an average run of 50 feet from the rack to each control box and 15 feet from each box to each of two speakers:
- 4-conductor: 5 rooms x 50 feet = 250 feet.
- 2-conductor: 5 rooms x 2 speakers x 15 feet = 150 feet.
Add slack at both ends and for routing before ordering.
Volume controls and keypads at the room
Control belongs at the room, usually beside the light switches at the main entrance, where people reach for it. There are two kinds of wall control, and they wire differently.
- Passive volume control: the speaker wire passes through it. It needs the 4-conductor in and the two 2-conductor runs out. When one amplifier channel feeds several rooms, use impedance matching controls; our guide to impedance matching volume controls explains the settings.
- Keypad: a keypad sends commands to the system at the rack, which sets the level there. It needs a category cable, usually Cat5e or Cat6, for data and often power; whether speaker wire also passes through the keypad box depends on the system, so check its manual.
Since the system is often chosen after rough-in, pull both to every control location: the 4-conductor loop and a Cat6 run. Terminate the Cat6 to one wiring standard throughout; see T568A vs T568B. Mount controls in a low-voltage bracket or box, never in a box shared with line-voltage switches; our low voltage mounting bracket guide covers the hardware.
When 4-conductor runs are worth it
A 4-conductor cable is two speaker circuits under one jacket. It earns its place in three spots:
- The home run to a stereo room, carrying left and right to the room control in one pull.
- A single stereo speaker, one in-ceiling model with both channels in one housing, used in small rooms such as baths and hallways.
- Spare capacity, where a room might later want stereo or a second zone.
Plain 2-conductor is enough from the control box to each individual speaker, and for a mono or single speaker zone. Surround channels in a theater room are separate runs to the room’s receiver, not part of the distributed system.
Prewire for whole home audio before drywall
A good prewire for whole home audio leaves every decision open. Before the inspector and the drywall crew arrive:
- Mark every speaker location on the framing and fit pre-construction brackets so the cut-out can be found later. Spacing rules are in our in-ceiling speaker placement guide.
- Fit a low-voltage box or bracket at each control location.
- Pull the cables: 4-conductor and Cat6 from the rack to each control location, 2-conductor from the control to each speaker.
- Keep speaker and control cable apart from power wiring. The electrical code requires Class 2 and Class 3 cabling to be separated from power conductors except where a barrier or listed device allows it; check details with the inspector.
- Leave slack and protect the ends, coiled and bagged at the bracket so they survive drywall and paint.
- Photograph every wall before it is closed.
Wiring layouts compared
The table compares the common layouts.
| Layout | How it is wired | Strengths | Limits |
|---|---|---|---|
| Home run to a central rack | 4-conductor from rack to each room control, 2-conductor to speakers | Each room on its own channel and source; easy to change later | Most cable; needs a rack location |
| Daisy chain between rooms | One run passes from room to room | Least cable | Rooms tied together; one fault affects all; hard to rezone |
| Amplifier in each room | Local amp or streamer near the speakers, network cable back to the rack | Short speaker runs | Power and space needed in each room |
| 70V distribution | One run feeds many transformer-tapped speakers | Long runs, many speakers | Commercial gear and sound; rarely chosen for homes |
Large outdoor areas and commercial spaces may suit constant voltage instead; our 70V vs 8 ohm speakers guide explains when.
Label every run at both ends
Commercial cabling specifications set the bar: the University of Toledo’s communications labelling specification, written to the TIA-606-B standard, requires a permanent machine-printed label on both ends of every cable, rejects handwritten labels, and asks for floor plans showing every outlet and its cable number.
A residential job can borrow the same habits. Give each run a code such as room, position and cable type, print it on both ends far enough back that stripping the jacket will not cut it off, and keep a drawing that matches the labels.
Where to find volume controls, speakers and wire
The volume controls category lists rotary, slider and decorator-style controls and a weatherproof enclosure. The AV accessories category lists pre-construction speaker brackets, the in-wall and in-ceiling speakers category lists the speakers, and the amplifiers category lists two-channel amps, all in the audio and video division. Cat6 in CMR and plenum jackets is listed in the security wire category.
For pricing and availability, ask your sales representative through the Bursma contact page, or apply for a Bursma dealer account.
Frequently asked questions
Should speaker wire be home run?
Yes, for whole house audio. A home run from each room to the rack lets every room have its own channel, source and level, and lets you rezone later without opening walls.
Do I need 4-conductor speaker wire?
For the run from the rack to a stereo room’s control box, yes: it carries both channels in one cable. From the control box to each speaker, 2-conductor is enough.
Can speaker wire run next to electrical wire?
Not in the same box or bundled with it. The electrical code requires low-voltage cabling to be kept apart from power conductors unless a barrier or listed device separates them; cross power cables at right angles where they meet.
What cable goes to a whole house audio keypad?
Usually a Cat5e or Cat6 run from the rack, plus speaker wire if the system loops it through the keypad box. Pull Cat6 and a 4-conductor loop to every control location if the system is not chosen yet.