Crown d150 and SDA compatible?

smolismoli Posts: 4
edited November 14 in Vintage Speakers
I have a crown d150 and am considering buying a set Sda 1c. Ive heard the amp must be common ground. I am unable to do this as i am away on business. Does anyone know if this amp is common ground?

Best Answer

  • KennethSwaugerKennethSwauger Moderator Posts: 6,018
    Accepted Answer
    The schematic drawing is available on their website (very handy for legacy owners) and shows the negative speaker terminal connected to ground. So, yes it is common ground.

Answers

  • smolismoli Posts: 4
    Looks like I get to pick them up on my way home!
  • F1nutF1nut Posts: 38,136
    Don't forget to pick up a real amp while you're at it.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • pkquatpkquat Posts: 510
    smoli wrote: »
    Looks like I get to pick them up on my way home!
    F1nut wrote: »
    Don't forget to pick up a real amp while you're at it.

    @smoli, congrats on the purchase. As an FYI crown amps generally don't have the best sound quality, and are not regarded highly by many audiophiles for serious listening. Although they can work well as a good subwoofer amp.

    DO not try to get high volumes from the 1C's with that amp either. It is under powered. I have 1C's and a 100WPC Krell cried some. My old Hafler DH220 did ok, but once I got a 200+WPC amp WOW. I would recommend at least 125WPC from a high current amp, perferably 150+ if you want to crank them. A 100 WPC high current amp would be fine for reasonable volumes.

    Someone on the Crown forum tried to run Polk SDA-SRS 2's with it and found it underpowered so they were thinking about doing a dual mono setup, which the blade blade version is not capable of as I recall, even if you get an AI-1 transformer or dreadnought in place of the interconnecting cable.

    https://www.crownaudio.com/forums/index.php?/profile/15030-scootchu/

    The link appears to be down, maybe it is just morning forum maintenance.

    Google Crown d150 Polk SDA-SRS II and the link will be near the top. You might be able to see the cached version.
  • nbrowsernbrowser Posts: 6,866
    F1nut wrote: »
    Don't forget to pick up a real amp while you're at it.

    That'll leave a mark.
    Living room: Samsung UN55KU7000 4K UHD HDR 55 inch TV, Marantz CD6004, Pro-Ject Debut Carbon, Parasound zPhono, Mac Mini, Oppo BDP-93, XBox One S 2Tb, Kenwood DPX792BH car deck for radio purposes, Marantz SR5010 AVR, Parasound HCA-1200II, Front SDA 2 modded with Larrys Rings and RD0-194-1 tweeters, Rear Onkyo SKF-4800 Towers, Center CSiA6, BOOM Tannoy TS2.12 Sub, Audioquest Evergreen interconnects just about everywhere except from AVR to amp, MIT Terminator 4, MIT AVT3 speaker cables with extra terminals covered up Monitor 5 Jr+ in the wings for a center channel.
  • xschopxschop Posts: 634
    More like a scar.
  • mhardy6647mhardy6647 Posts: 15,060
    I was biting my tongue (vis-a-vis the D150) :|

    They're actually not awful (the accompanying IC-150 preamp was and is awful, though) -- and they're certainly robust: "Built Missionary Tough!" (really and truly).

    I mean, ya gotta start somewhere; ya gotta use whatcha got, you know?


    14384482776_f1a989abff_b.jpgcrownies by Mark Hardy, on Flickr
    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

  • tonybtonyb Posts: 27,604
    mhardy6647 wrote: »
    ....ya gotta use whatcha got, you know?

    Didn't work out so well for me, had to marry her dang it.
    legacy Focus 20/20
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  • oldrockeroldrocker Posts: 1,610
    Got this ole beater sitting around collecting dust.



    Not even sure if I ever powered it on..
  • mhardy6647mhardy6647 Posts: 15,060
    I do believe that the D-150eh model was special-made for Canada, eh?

    ;)
    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

  • oldrockeroldrocker Posts: 1,610
    Not a clue here.

  • mhardy6647mhardy6647 Posts: 15,060
    was joke :|
    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

  • pkquatpkquat Posts: 510
    @mhardy6647
    mhardy6647 wrote: »
    I do believe that the D-150eh model was special-made for Canada, eh?
    ;)

    ay or ey might have been a better Canadian pun, although I know the eh is Canadian "a", most people are taught that is sounds more like the "e" in pet.

    @mhardy6647 @oldrocker Any idea how the Crown and Hafler compare sound wise. I am not familiar with older Crowns. While my Parasound definitely sounds more musical and overall better than my Hafler, there is a richness in the bass of the Hafler that is hard to beat. It has also sounded pretty good no matter what it was hooked up to.
  • mhardy6647mhardy6647 Posts: 15,060
    Haven't heard a Hafler amplifier in a long, long time. My recollection was that they sounded pretty good (but my tastes have refined a bit since then).

    The Crown D-150 isn't a horrible sounding amplifier IMO... it's a little coarse, but not unlistenable.
    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

  • Viking64Viking64 Posts: 477
    I'm scheduled to get a few crowns next month. I hope my SDA's don't make them vibrate too much.
    Polk SDA SRS 2.3TL
    Silk Audio MS38SE Tube Amp
    Yamaha DSP A-1 AV Amp
    Panasonic TC-P65S2 Plasma TV
  • oldrockeroldrocker Posts: 1,610
    pkquat wrote: »
    @mhardy6647
    mhardy6647 wrote: »
    I do believe that the D-150eh model was special-made for Canada, eh?
    ;)

    ay or ey might have been a better Canadian pun, although I know the eh is Canadian "a", most people are taught that is sounds more like the "e" in pet.

    @mhardy6647 @oldrocker Any idea how the Crown and Hafler compare sound wise. I am not familiar with older Crowns. While my Parasound definitely sounds more musical and overall better than my Hafler, there is a richness in the bass of the Hafler that is hard to beat. It has also sounded pretty good no matter what it was hooked up to.

    I've never hooked either one up to compare.

    I think I got them in a "stack of stuff" purchase a few years back??

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