I had an integrator call today asking what the compatible pin outs of the QTP-DB25 adapters were .
QTP-DB25M and QTP-DB25M use the Tascam DB25 Pinout.
Channels 1-4 terminate to one RJ45 and 5-8 to the other.
If you are using AES in and out the pin out is identical.
CH 1-4 are IN 1-4 and CH 5-8 are OUTPUT 5-8
The Third Compatible pin out is the Yamaha AES pin out. The QTP-DB25Y is only available in a male DB25 connector. The IN the first RJ45 and OUT the second.
All the RJ 45 connectors terminate to the TIA -B standard and use the following pair and polarity designation
Someone at NAB asked a great question:
“How does QTP hook up to Studio Hub?”
The answer is “perfectly” with a few Q-mandments broken….
Such a great question demanded it’s own forum
See more on the forum:
QTP – DB25
QTP-DB25M+ Male + Shield
QTP-DB25Y Yamaha Male
QTP-WBS WBS-High Density Breakout – TBA NAB-2015
QTP – BREAK OUT BOX
QTP-BOB-XLR-FM Female / Male
QTP-BOB-XLR-MF Male / Female
QTP-BOB-BNC AES / SPDIF
QTP-BOB-BNC10 AES / SPDIF w/ 10dB pad
QTP – TAILS
QTP-XX-*-XLR-FM Female / Male
QTP-XX-*-XLR-MF Male / Female
QTP-XX-*-TRS Tip Ring Sleeve
QTP-XX-* -U User-terminated
XX = Cable Length (ft) 3, 5, 15, 30
* = Tail Length (ft) 1, 2, 3, 4
QTP – Kits
QTP-CAT6-KEY Keystone Termination
QTP-HSK-1 1’ Heat Shrink Kit
QTP-HSK-2 2’ Heat Shrink Kit
QTP – PANEL
QPNL-3-DB25 2RU ¼ Panel
QPNL-4-DB25 2RU ¼ Panel
We’re Excited to announce we’ll be at NAB2105 at the Ward-Beck Systems Booth C2541!!
A user pointed out to me that the pairs Go from 1-4 in the order of SUN, SKY, GRASS and EARTH
It was too good of an observation to not share!
A shield with a shield option
We were lucky enough to have Tristan Miller of Catherine North Audio over for the day to give Quad Twisted Pair an examination. Tristan is an Electronics Technician with a comprehensive background in Electrical systems being a licensed Electrician. Having implemented over a thousand channels of QuadTwisted Pair in his recording studio(s), he has been a great influence of the ideas surrounding implementation and execution. His understanding of Electrical and audio systems is like no other. He came armed with a brand new 1000 foot box of CAT5e Quad Twisted Pair cable to play with. Along with repeating our original tests, some new tests were conducted to compliment our original findings.
We let Tristan drive the Audio Precision 2700 so all tests results were independently confirmed:
Continue reading Tristan Miller vs 1000 feet of Quad Twisted Pair