Day-to-day production

Operations blueprint

Verification and comparison are not identical. Verify checks whether a recorded disc can be read; Compare checks data copies against the master and is not used for audio. For audio, combine read-back verification with playback and metadata checks.

Initial controller settings

Setting	Starting value	Reason
Source	Dedicated top source drive	Simple operating routine
CD write speed	24X	Conservative first qualification speed
Audio write speed	16X or 24X	Broad player compatibility, lower vibration
Under-run protection	On	Reduces failed burns
Read-error skip	Off	Prevents silently copying a damaged master
Overburn	Off	Avoids out-of-spec capacity
Burn mode	DAO	Default for finished audio and full-disc copies
Auto verify	On for qualification; sample later	Detects unreadable results
Auto compare	On for data CDs only	Compare is not for audio masters
Prescan	On for unknown/customer masters	Finds source problems before wasting blanks
CD-TEXT	On when masters contain it	Preserves album/track display metadata
ISRC & MCN	On for commercial audio	Preserves embedded identifiers
CD+G	Off unless needed	Avoids unnecessary special-mode behavior
Eject policy	Good discs only	Visually separates failures

Printing options

Preferred launch

Separate printer + tower

Print a job’s blanks first, then burn the approved master in seven-disc batches.

Seven simultaneous burns
Printer and burner independently repairable
Best raw throughput for identical discs
Easy staged production of preprinted stock

Guidance

Disc Makers: choose a duplication system

Add later

Automated publisher

Primera Bravo SE-3 (~$1,695, up to 20 discs/job, ~36 CDs/hr). Higher-end Primera 4202 / Epson PP-100III ~$4,149–$5,499 for larger unattended jobs.

Unattended burn + print; lower handling
Better for personalized / variable-data discs
Higher capital; lower burn parallelism than 1-to-7
Robot/printer fault can stop the whole line

Add when measured labor time — not burner capacity — becomes the bottleneck.

Media policy

Use professional printable CD-R from a consistent lot. CMC Pro / Taiyo Yuden-technology discs are sold for professional duplication, playback compatibility, and printable-surface quality. Qualify at 24X.

Qualify every new media lot on every target drive
Default to 24X until internal data supports a higher speed
Use Disc-at-Once for finished audio programs
Inspect discs for surface defects before loading
Do not apply adhesive paper labels — imbalance and peel risk
Retain the lot number and one finished sample from each job
Store media away from heat, sunlight, and humidity extremes

Media & printing sources

Quality control

A tower’s successful read verification is necessary but not identical to optical-quality analysis. C1 errors are expected at some level; C2 indicates more serious correction; uncorrectable CU errors should not be present. Use a compatible scanning drive/software or periodic specialist testing for C1/C2/CU and jitter.

Common CD errors (C1/C2/CU)

Written internal procedures should provide traceability comparable to professional duplication services — not just an “OK” message.

Collect rights confirmation, master, track list, CD-TEXT, ISRC/MCN, artwork, quantity, packaging, deadline.
Prescan the master; confirm track order, gaps, total time, and metadata.
Create and checksum an approved image when using HDD/PC storage.
Burn one production-speed proof.
Listen to transitions; test the proof in multiple unrelated players.
Burn and verify a seven-disc pilot batch.
Inspect print alignment, color, dryness, and recording surface.
Run production while logging rejects by job, writer, and media lot.
Test first and last accepted disc from each writer; stricter sampling for new media or replacement drives.
Quarantine a writer’s output after any unexplained failure until it passes a new proof and scan.
Retain approved image/master, firmware info, media lot, job log, and one finished sample.

Throughput planning

Marketing claims vary (e.g. ~3 minutes for seven full 700 MB CDs vs ~30×650 MB CDs/hour). Measure with your actual master length, burn speed, verification policy, and operator workflow.

Process	Planning capacity
Burn only, manual seven-target tower	50–90 accepted full-length discs/hour
Burn + individual read-back verification	25–50 discs/hour
Burn, print, inspect, and package	Timed pilot — printer/packaging may dominate

Track accepted finished units — not nominal drive speed or tray cycles.

Business continuity kit

A single tower is a single point of failure. Keep:

One matching spare writer
One tested spare PSU or same-day local source
Offline copies of controller firmware and manuals
One known-good source drive
A computer burner or small second tower
Written warranty-freight and turnaround terms
An outside duplication vendor for overflow and major outages

The second machine does not need to be another seven-target tower initially. A 1-to-3 unit or automated publisher can handle proofs, personalized jobs, and emergency production.