Results 21 to 29 of 29
Thread: RCA Audio Cables
-
11-15-2014, 12:37 PM #21
Theres a difference between a traditional coax with a woven conductor over a center conductor and twisted. Twisting prevents EMI. You see twisted conductors on such applications as ABS wheel speed sensor leads and crank and cam sensor leads that produce an AC voltage.
-
11-15-2014, 12:50 PM #22Senior Member
- Join Date
- Oct 2013
- Location
- Ft. Collins, CO
- Posts
- 688
Generally we say "amp" to mean the box that you install in your boat or car. The actual components inside the amp are things like resistors, capacitors (passive components) and active components like op-amps. Op-amps are the fundamental electrical building block that are inside the "amp" in the signal path. Like David Analog said these are ICs (integrated circuits) - the chips and components on the circuit board.
2007 Mobius LSV
1989 Sanger Skier DX - sold
-
11-15-2014, 12:51 PM #23Senior Member
- Join Date
- Oct 2013
- Location
- Ft. Collins, CO
- Posts
- 688
-
11-15-2014, 01:29 PM #24
-
11-15-2014, 05:10 PM #25Senior Member
- Join Date
- Oct 2013
- Location
- Ft. Collins, CO
- Posts
- 688
They are playing off of the terminology of a twisted pair conductor, which is a good transmission line for a differential signal but are talking about the stranded wires of the coax shield? Twisting the shield conductors doesn't help with EMI, there's only one conductor. What you want is a solid continuous ground surface.
I would like to see a construction diagram of a "dual twist" coax. I stand by my statement that it is a marketing gimmick.Last edited by gregski; 11-15-2014 at 05:13 PM.
2007 Mobius LSV
1989 Sanger Skier DX - sold
-
11-15-2014, 06:17 PM #26
Quote, "I would like to see a construction diagram of a "dual twist" coax. I stand by my statement that it is a marketing gimmick."
Not a marketing ploy. Just a basic description. Pretty simple. For most of the RCA cable length the left and right + positive and negative are intertwined. Then they split at each end and are single twisted pair for the short distance to the end terminals.
-
11-15-2014, 07:27 PM #27Senior Member
- Join Date
- Oct 2013
- Location
- Ft. Collins, CO
- Posts
- 688
-
11-15-2014, 07:47 PM #28
This thread has been full of great info, but a couple questions have not been answered.
Brian - Are the XM amps and the ZLDMKII single ended or differential?
Anyone-How do you test to see if the equipment is single ended or differential?
From what I have read online, if the outer conductor is grounded, then it is single ended. If the outer conductor is not grounded, then it is a differential. Am I wrong?Joe
2014 LSV
2010 Outback V - Sold
1993 Echelon
-
11-15-2014, 09:40 PM #29