SDA 1C & Parasound A23 running in mono?????????????????

Just a quick question for the forum; Can i use two A23 amps in mono to power my 1C's?? One for each speaker that is. Does running this in mono make it non common ground? I am in on the dreadnought purchase and waiting for delivery. So with the dreadnought should i be OK? Please some thoughts.
Denon AVR X4200W
Parasound A23 amplifier
Parasound A23 amplifier
LG 65" Ultra HD4k
LG 4kBR - UP970
Denon DVM 4800
Denon DP 3000 turntable
Saec 308sx tonearm w/
Dynavector 10x5 cart
NAD pp 4 Phono Preamp
MIT Avt3 Speaker c's
Audio Quest Big Sur ic's
Polk SDA 1C's modded
Polk RTiA 7's
Polk CSi A6
Polk RTiA 3's
Polk 80F/X-RT
Polk DSW PRO 440wi sub
Infinity bu2 sub
"The early Klingon gets the Gagh"

Comments

  • gyosagyosa Posts: 41
    I’m using an A21 on my 1c’s...
    Just curious , does a single A23 in stereo provide you enough current and power for your 1c’s?

    Thanks
    BK
    Parasound A21 , Yamaha wxc-50, PS Audio 4.6 , Polk SDA 1c’s
    B&K EX-442 , Yamaha wxc-50 , Klipsch Kg4’s
    Yamaha R9 receiver , Boston Acoustics Voyager 70’s ( pool )
    Onkyo TX-RZ610 , Polk Atrium 7 , Boston Acoustic soundware + sub ( patio home theatre )
  • EmlynEmlyn Posts: 2,213
    The A23 is only compatible with minimum 8 ohm loads when used bridged mono, so not a good idea even with the transformer. The transformer is necessary with mono amps if they do not share a common ground. A single A23 run in stereo mode would be sufficient for 1C speakers unless really pushing them hard.
    1. Polk LSiM707, 704C, 703; Dual SVS SB2000 subwoofers; Marantz SR7011 receiver; Parasound A23 amp; Oppo 205; Toshiba HD-DVD Player; Sony 65" 4K TV; FIOS; PS Audio Power Plant Premier; MIT S2 cables
    2. JM Labs Electra 920.1; Parasound JC2 Preamp; Sonic Frontiers Power 2 amp; Sony HAP-Z1ES; Oppo 105D; Music Hall MMF7 and Acoustech phono pre; PS Audio P1000; MIT S1 Cables
    3. Polk LSiM703; Pioneer Elite SC97 receiver; Oppo 203; Squeezebox Touch; MIT S3 cables
  • ManticoreManticore Posts: 328
    @Emlyn thanks for pointing that out. I just read that at the bottom of page 18 in the manual. I think 1C's are 6ohm or less. I just wanted to replace my 1500a amp. Since the A23 has 15 amperes less per channel & less watts per channel 125 to 205 i was thinking of going the mono route so there would be no noticeable loss in current & power. I guess it was a decent thought. :|
    Denon AVR X4200W
    Parasound A23 amplifier
    Parasound A23 amplifier
    LG 65" Ultra HD4k
    LG 4kBR - UP970
    Denon DVM 4800
    Denon DP 3000 turntable
    Saec 308sx tonearm w/
    Dynavector 10x5 cart
    NAD pp 4 Phono Preamp
    MIT Avt3 Speaker c's
    Audio Quest Big Sur ic's
    Polk SDA 1C's modded
    Polk RTiA 7's
    Polk CSi A6
    Polk RTiA 3's
    Polk 80F/X-RT
    Polk DSW PRO 440wi sub
    Infinity bu2 sub
    "The early Klingon gets the Gagh"
  • pitdogg2pitdogg2 Posts: 12,557
    You will also be raising the noise floor running them bridged.

    I'd pass on that idea.
  • EmlynEmlyn Posts: 2,213
    I'd use the 1500a on SDAs unless going bigger like with an A21. The 1500a is a very good sounding amp itself with SDAs, and plenty powerful for most speakers. I keep one around for occasional use myself.
    1. Polk LSiM707, 704C, 703; Dual SVS SB2000 subwoofers; Marantz SR7011 receiver; Parasound A23 amp; Oppo 205; Toshiba HD-DVD Player; Sony 65" 4K TV; FIOS; PS Audio Power Plant Premier; MIT S2 cables
    2. JM Labs Electra 920.1; Parasound JC2 Preamp; Sonic Frontiers Power 2 amp; Sony HAP-Z1ES; Oppo 105D; Music Hall MMF7 and Acoustech phono pre; PS Audio P1000; MIT S1 Cables
    3. Polk LSiM703; Pioneer Elite SC97 receiver; Oppo 203; Squeezebox Touch; MIT S3 cables
  • I dumped my brand new A23 for a HCA-1500 to drive my SDA2B's. The difference was quite obvious.
    2 channel: Anthem 225 Integrated amp; Parasound Ztuner; TechnicsTT SL1350; Vincent PHO-8 phono pre; Marantz CD6005 spinner; Polk SDA2BTL's; Cables ZU Mission IC's, SC and power cords, all into a PS Audio Dectet Power center.

    All TV's sound enhanced by Polk Magnfi Mini's.

    Other; S60'S, M10 series II, M7C's, Hafler XL600 amp, RB-980BX, Parasound HCA-1500 amp , P5 preamp, all in storage. All speakers have had crossover rebuilds, resulting in a small fortune invested in Sonicaps, and tweeter upgrades.

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  • ManticoreManticore Posts: 328
    I dumped my brand new A23 for a HCA-1500 to drive my SDA2B's. The difference was quite obvious.

    So you noticed that big a difference. If i may ask what was missing?
    Denon AVR X4200W
    Parasound A23 amplifier
    Parasound A23 amplifier
    LG 65" Ultra HD4k
    LG 4kBR - UP970
    Denon DVM 4800
    Denon DP 3000 turntable
    Saec 308sx tonearm w/
    Dynavector 10x5 cart
    NAD pp 4 Phono Preamp
    MIT Avt3 Speaker c's
    Audio Quest Big Sur ic's
    Polk SDA 1C's modded
    Polk RTiA 7's
    Polk CSi A6
    Polk RTiA 3's
    Polk 80F/X-RT
    Polk DSW PRO 440wi sub
    Infinity bu2 sub
    "The early Klingon gets the Gagh"
  • ManticoreManticore Posts: 328
    Emlyn wrote: »
    I'd use the 1500a on SDAs unless going bigger like with an A21. The 1500a is a very good sounding amp itself with SDAs, and plenty powerful for most speakers. I keep one around for occasional use myself.

    I'm starting to have minor problems with the 1500. Right side channel is cutting out. If i put my hand on the ic cable and try to move it a bit the sound comes back on. Right channel problem only.
    Denon AVR X4200W
    Parasound A23 amplifier
    Parasound A23 amplifier
    LG 65" Ultra HD4k
    LG 4kBR - UP970
    Denon DVM 4800
    Denon DP 3000 turntable
    Saec 308sx tonearm w/
    Dynavector 10x5 cart
    NAD pp 4 Phono Preamp
    MIT Avt3 Speaker c's
    Audio Quest Big Sur ic's
    Polk SDA 1C's modded
    Polk RTiA 7's
    Polk CSi A6
    Polk RTiA 3's
    Polk 80F/X-RT
    Polk DSW PRO 440wi sub
    Infinity bu2 sub
    "The early Klingon gets the Gagh"
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