Mallette Posted November 8, 2013 Author Share Posted November 8, 2013 JBryan, go to my blog site in the link at my sig line and read "Whatever Happened to HiFi..." If the first part doesn't interest you, just skip down towards the end to the discussion of issues and solutions for surround sound. I argue...and have since the quad debacle...that 2 channel CANNOT be considered "high fidelity" as it cannot recreate accurately (as in "fidelity) an acoustic space/time event. When a digital format is developed for download and general usage (not a medium, like BR, DVD, or SACD) your Quadradial will be perfect as there is no need for any more than 4 channels for this purpose IMHO. Dave Quote Link to comment Share on other sites More sharing options...
DizRotus Posted December 2, 2013 Share Posted December 2, 2013 (edited) Now that the USPS finally delivered my TC-760LC phono preamp posted by billybob weeks ago, I'm in a position to listen to vinyl being played through my chip amps via the QD-1. As an aside, I couldn't be more pleased with the TC-760LC. In the course of setting up the facilities to modify and compare two TDA7297 amps, I discovered a problem with the QD-1. The 3-position switch was not operating properly. When in the "Front Only" position, the right rear speaker still produced sound. After confirming the wiring and connections, I noticed that a contact had shifted, which caused the problem. That solved, I was ready to compare chip amps with the aid of the QD-1. If interested, the photo shows the TDA7297 amps, as well as the Dynaco QD-1 (which Dave Mallete tempted me to get) and the TC-760LC. The TDA7292s and QD-1 are sitting on a Dynaco FM-5. The barrier strips behind the QD-1 enable easier and more secure connections to the QD-1. The spacing of 12 thumb-screw terminals on the rear of the QD-1 makes connections difficult and unstable. The thumb-screws were replaced by slotted screws that can be more easily and securely tightened. Short leads from the QD-1 to the barrier strips allow for adding or subtracting components easily without disturbing the antique terminals on the QD-1. Dave Mallete knows what I mean. As part of my new vinyl addiction, I ordered a Denon DL-110 MC cartridge. It'll be my first experience with MC. I was seduced by the price ($139 from Amazon) and favorable reviews, especially the one attached. I was especially intrigued by the predicted suitability for enjoying used records, which is how I feed my addiction. Kobesky_review.pdf Edited December 3, 2013 by DizRotus Quote Link to comment Share on other sites More sharing options...
djk Posted December 3, 2013 Share Posted December 3, 2013 (edited) True L+R for center channel, L-R for rear channels. May not be used with a bridge amplifier, or mono blocs, must have a common ground for both channels (as do 99% of all amplifiers). Edited December 3, 2013 by djk Quote Link to comment Share on other sites More sharing options...
Mallette Posted December 3, 2013 Author Share Posted December 3, 2013 (edited) Man, Neil. That's a picture only an audiophool could love! Make a woman run away in tears... I see you have the same 78 phono preamp I do. I think those are a huge bargain. Dave Edited December 3, 2013 by Mallette Quote Link to comment Share on other sites More sharing options...
Mallette Posted December 3, 2013 Author Share Posted December 3, 2013 May not be used with a bridge amplifier, or mono blocs, must have a common ground for both channels (as do 99% of all amplifiers). Yeppem. Get that wrong and you'll let the magic smoke out. Dave Quote Link to comment Share on other sites More sharing options...
DizRotus Posted December 19, 2015 Share Posted December 19, 2015 (edited) Sadly, my Dynaco QD-1 is looking to find a new home. My shift to digital and balanced (no common ground) using Pono and a Wiener TPA3118 chip amp renders it useless. I'll post it in Garage Sale for $35 with free shipping to 48 states. It works perfectly, but the original black handle for the switch is missing. Edited December 29, 2015 by DizRotus Quote Link to comment Share on other sites More sharing options...
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