Quick Answer / Summary: A custom audio snake is built to a specification: exact channel count, exact length, connector mix (XLR, TRS, DB25, EtherCon), gender per end, labelling and jacket. Cost is typically 20-40% over the nearest standard size; lead time 2-4 weeks. Specify: channel map, length measured along the real route plus 3 m, connector types per end, and labelling scheme. Custom pays when the standard size is wrong by more than 15%.
Standard snakes ship in fixed channel counts and lengths; rooms are not fixed. A custom snake is specified in one document and built once – the purchase that ends adapter chains and slack coils. This guide covers what to specify.
When Custom Beats Standard
The arithmetic: a standard 16-channel snake on a rig that needs 14 channels wastes two channels of copper; a standard 20 m snake on a 13 m route leaves 7 m of coil. Custom pays when the mismatch exceeds roughly 15% of the price – and almost always when connectors must differ per end. The classic custom cases: a fixed install where the run threads through conduit and the length must be exact; a rig with a DB25 console interface on one end and XLR on the other; a fleet standardising on one channel map and label scheme across venues. Custom is not vanity – it is the elimination of adapters.
The Adapter-Chain Cost
Every standard-size mismatch adds an adapter: DB25 breakouts, XLR barrel couplers, gender changers. Three adapters cost more than the custom build’s premium and add three failure points.
The Install Case
Cable pulled through conduit cannot be shortened later. Fixed installs are where exact length stops being a preference.
The Specification Document
A custom order is a one-page spec: channel count; length (measured along the actual route, plus 3 m service slack); connector type at each end, per channel if mixed; gender convention; jacket material and colour; labelling scheme (channel numbers, room names, build date); and the breakout style (moulded, strain-relieved, or box). Add the pinout if the console uses a non-standard one. The document’s value is that it can be quoted against – build houses price from the same page, and disputes about ‘what was ordered’ disappear.
Measure the Route, Not the Room
Room dimensions mislead: the cable goes around a door frame, under a riser and up a wall. Measure the path with a tape and add slack.
Pinout in Writing
Console manufacturers occasionally use non-standard pinouts on DB25 and TRS interfaces. One line in the spec prevents a rebuild.
Cost, Lead Time and Acceptance
Cost: 20-40% over the nearest standard size for the same construction, driven by setup labour rather than material. Lead time: 2-4 weeks typical, longer for star-quad or mixed connectors. Acceptance: test every channel for continuity and polarity, verify the label scheme against the spec, measure the length, and patch the full rig before the first show. The acceptance list is short because the spec did the work – a custom snake either matches the document or it does not.
The Setup-Labour Premium
Custom pricing is mostly labour: a build house re-tools for one unit. Ordering two identical snakes halves the per-unit premium – fleets should batch.
Acceptance Against the Spec
Test to the document: channels, polarity, labels, length. The spec is the acceptance criteria, which is why writing it well matters more than negotiating price.
Custom Spec Sheet
| Field | Example | Why It Matters |
|---|---|---|
| Channels | 14 (12 + 2 spare) | Avoids wasted copper |
| Length | 17 m (14 m route + 3 m) | No slack coil |
| Connector A | XLR female, stage | Matches mic outputs |
| Connector B | DB25, console | Eliminates breakout box |
| Jacket | PUR, black | Cold and abrasion |
| Labels | Ch 1-14, both ends | Patch speed |
Real-World Application Scenarios
A theatre’s 14-channel run threads 17 m through conduit to a DB25 console interface – one custom build replaced three adapters and a slack coil. A venue group standardises four rooms on one 16-channel map and label scheme, ordering in a batch of four to halve the setup premium. A church’s 22-channel install uses exact-length multipair with wall plates at both ends, measured before the walls closed.
Recommended Internal Resources
(1) Product cluster – https://zh-zong.com/productlist/ (anchor: custom snakes built to specification); (2) FAQ – https://zh-zong.com/faq/ (anchor: custom order questions); (3) Contact – https://zh-zong.com/contact/ (anchor: send the spec sheet for a quote).
Related Reading in This Series
- Drop Snake: Short Multichannel Drops for Truss, Risers and Pits
- Snake Cable Wire: Bulk Multipair for Custom Builds and Repairs
- Audio Snake Cable: Channels, Connectors and How to Choose One
Frequently Asked Questions (FAQ)
Q: How much more does a custom snake cost?
A: Typically 20-40% over the nearest standard size, mostly setup labour. Two identical units cut the per-unit premium significantly.
Q: What lead time should I expect?
A: Two to four weeks for standard construction; longer for star-quad or mixed connectors. Plan around the install date, not the order date.
Q: Do I need a custom snake for a fixed install?
A: Usually yes – conduit runs cannot be shortened, and exact length plus wall plates eliminates adapters and slack.