Audio Head Relapping
Too frequently analog recording heads are replaced before their full productivity is realized. Considering the expense of new replacement heads, it makes sense to maximize the usefullness of your existing heads. Especially when this can be done at a fraction of replacement cost and without sacrificing quality.
WE WILL RELAP ALL ANALOG AUDIO HEADS INCLUDING:
- 2″ 24TK to 1/4″ Mono
- Cassette Dup Heads
- Cart Heads
- All Metal and Ferite (glass)
- And More…
Is It Time To Relap?
THE PROBLEM: When new, tape heads have a specific “radius” or “contour” to the crown (area where the tape contacts the head). As moving tape wears down the head, this radius, which plays a role in frequency response, becomes flattened, outside tracks become more worn or “shallow” than inside tracks, and the tape no longer contacts the head properly.
THE SYMPTOMS: The effects of this wear become evident to the operator as
- Loss of High End – Especially On Outside Tracks.
- Signal Instability
- Overall Loss of Level
THE CURE: AMP Services will perform a preliminary check of inductance and DCR on each track and measure the depth of wear on your heads to determine the percentage of life remaining. If warranted, we will then very precisely restore the contour and polish the heads to a mirror finish. Great care is taken to continouosly monitor this process, ensuring that the final .00025 of wear is removed during the polishing process and that no material is removed unnecessairily, thereby maximizing the productivity of each head. After relapping, your heads are then mounted on their head assembly and a complete digital/optical alignment is performed with respect to AZIMUTH, ZENITH, TRACK HEIGHT, GUIDE HEIGHT, WRAP and SCRUB.
A comprehensive lab report documenting all incoming and outgoing electrical and mechanical specifications will accompany each completed job.