For sale is a classic Telos ONE plus ONE, SN 5009050, which consists of
two Telos One digital hybrids in one 19" rack mount enclosure. The Telos One is for interfacing telephone
lines to professional audio systems for broadcast on-air, intercom interface,
or teleconferencing use. The very fast
and precise digital automatic nulling hybrid allows smooth, natural, simultaneous
conversation between the far-end caller and the sending source, like a
talk-show host. Telephone connections
are via standard RJ-15 modular jacks, while audio input and output are connected via
XLRs. Each hybrid has one balanced input with provision for mic or line levels
and two balanced outputs. The second output may be switched to be either a
second isolated output or a mix of the send and caller signals. A complete manual is available online at www.telosalliance.com.
Manufactured in
the late 90’s, the unit has recently been refurbished with new D2912-A PCM
Codec Filter Integrated Circuit chips, which is what usually fails.
Though no longer made, these IC chips were manufactured in the millions
and NOS ICs are still available. It is
the only chip on the main board that is socketed so it can be easily replaced,
which tells me that Telos expected these ICs will need to be swapped out every
now and then. As such, with these new chips the unit should
be good to go for many years to come.
Both channels
have been thoroughly tested operationally and basic specs checked. The case has several scratches but the front control panel and rear connector panels are clean (see pics). They have that clean, natural Telos sound
that makes you forget you’re listening to a telephone line. If you would like, we can arrange a phone
call and I can talk to you using the hybrid and you can hear it for yourself.