Adcom 5802: Strapping/Jumping Negative Terminals

stogie
stogie Posts: 230
edited May 2014 in Vintage Speakers
This for powering a set of SDA SRS's with a non-common ground amp. There are an extra set of outs on the back of the 5802 that are labeled "bi-wire". If I strap those two negative terminals will that have the same grounding affect as strapping the main neg outs?
Speakers: Polk SDA-SRS xovers rebuilt by David, RDO194's, Dynamat, BH5, glued magnets, new cloth, custom aluminum terminal plates with Cardas posts and Speakon interconnect
Speaker Cables, Jumpers & Interconnect: DIY Douglas Connection
Power Amp: Sunfire Architect's Choice Series II
Preamp: Adcom GFP-750
SACD/CD: Oppo BDP-95
Tuner: Sansui TU-717
TT: Technics SL-MA1
Phono Pre: Emotiva XPS-1
Music Server: Mac Mini w/JRiver - iPad w/JRemote
DAC: Eastern Electric MiniMax Plus
Other Polks: SDA: 1A, 1C, 2B, CRS+ / Monitor: 10A, 5jr, 4 / RT5
Post edited by stogie on
· Share on FacebookShare on Twitter

Comments

  • Toolfan66
    Toolfan66 Posts: 17,243
    edited May 2014
    Yes!!
    · Share on FacebookShare on Twitter
  • stogie
    stogie Posts: 230
    edited May 2014
    thank you very much
    Speakers: Polk SDA-SRS xovers rebuilt by David, RDO194's, Dynamat, BH5, glued magnets, new cloth, custom aluminum terminal plates with Cardas posts and Speakon interconnect
    Speaker Cables, Jumpers & Interconnect: DIY Douglas Connection
    Power Amp: Sunfire Architect's Choice Series II
    Preamp: Adcom GFP-750
    SACD/CD: Oppo BDP-95
    Tuner: Sansui TU-717
    TT: Technics SL-MA1
    Phono Pre: Emotiva XPS-1
    Music Server: Mac Mini w/JRiver - iPad w/JRemote
    DAC: Eastern Electric MiniMax Plus
    Other Polks: SDA: 1A, 1C, 2B, CRS+ / Monitor: 10A, 5jr, 4 / RT5
    · Share on FacebookShare on Twitter
  • stogie
    stogie Posts: 230
    edited May 2014
    I pulled the 5802 out of the rack and measured the resistance on the neg outs. I was getting about 20 ohms. Putting the jumper between the negs on the bi-wire terminals brings the resistance down to .3 ohms. Question is, is that an acceptable level to run the SRS's?
    Speakers: Polk SDA-SRS xovers rebuilt by David, RDO194's, Dynamat, BH5, glued magnets, new cloth, custom aluminum terminal plates with Cardas posts and Speakon interconnect
    Speaker Cables, Jumpers & Interconnect: DIY Douglas Connection
    Power Amp: Sunfire Architect's Choice Series II
    Preamp: Adcom GFP-750
    SACD/CD: Oppo BDP-95
    Tuner: Sansui TU-717
    TT: Technics SL-MA1
    Phono Pre: Emotiva XPS-1
    Music Server: Mac Mini w/JRiver - iPad w/JRemote
    DAC: Eastern Electric MiniMax Plus
    Other Polks: SDA: 1A, 1C, 2B, CRS+ / Monitor: 10A, 5jr, 4 / RT5
    · Share on FacebookShare on Twitter
  • deafbykhorns
    deafbykhorns Posts: 150
    edited May 2014
    This amp is fine to tie the grounds, its not a true balanced amp at the output with floating ground.
    The resistance your measuring is normal as well
    Main System- Scratch built 2A3 , Lightspeed preamp, Technics SP15/Graham/XV1s,Klipschorns w/ALK xovers/Trachorns, Speakercraft MT8(4), Sonos ZP90, Yamaha Aventage for surround
    Office System- Adcom GTP500, Bedini 45/45,Lexicon RT-20,Enlightened Audio DAC, Polk SDA2.3TL, Northcreek Borealis
    · Share on FacebookShare on Twitter