For anyone who might be interested: Nelson Pass-designed ACA amplifier kit "back in stock" :)

13

Comments

  • mhardy6647mhardy6647 Posts: 18,018
    Is that a Sony Slant deck? 366?

    TC-377
    Dump find. Works well (except the counter belt needs to be replaced)
    Decent sounding basic mechanical transport, single motor, three-head deck. Good for auditioning found tapes. :)

    16102128209_95e707b923_h.jpgSony TC-377 by Mark Hardy, on Flickr
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

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

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • mhardy6647mhardy6647 Posts: 18,018
    BlueFox wrote: »
    mhardy6647 wrote: »
    mhardy6647 wrote: »
    I am using these with the ACA, in case that wasn't obvious.

    24051079897_d03eddae1b_h.jpgDSC_9984 (3) by Mark Hardy, on Flickr

    If I had a nickel for everytime I saw that pic I'd be a gazillionaire... B)

    If didn't have all that junk, maybe I would be too.


    Are you calling my Bryston DAC junk? :)

    Did you ever use it?

    ahem, sorry :(

    I use it daily, that's why it is sitting there.
    Everything else. Everything else is junk.
    Well - except the Amp Camp Amp @ALL212 built.
    Oh, and the Bottlehead Reduction of @mrbiron which is still being held hostage.

    And anything else I got from you guys here! :)
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

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

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • ALL212ALL212 Posts: 755
    Anyone have a finished V2 of the ACA? Board layout looks different.

    I know you'll all be shocked but I've built the Frugal Horns (a tad harsh with the cones I chose and I don't remember which cones I chose). I've built both the Bottlehead S.E.X (V2) and Stereomour (V1).

    The S.E.X can do both headphones and speakers (although very low power, 2W), sounds great but box is crowded - doable - but not a lot of room to play with. Get the impedance switch's with it and you can match it to your cans or speakers.
    cl3v3t1bqtp4.jpg


    Stereomour is more expensive but there's room under the hood. Also sounds great and has a bit more power (3.5w). No headphone.
    xolg1q16s4cw.jpg

    Either of them can become your life long friend with the right speakers.
    Aaron
  • Jim ShearerJim Shearer Posts: 350
    mhardy6647 wrote: »
    Is that a Sony Slant deck? 366?

    TC-377
    Dump find. Works well (except the counter belt needs to be replaced)
    Decent sounding basic mechanical transport, single motor, three-head deck. Good for auditioning found tapes. :)

    16102128209_95e707b923_h.jpgSony TC-377 by Mark Hardy, on Flickr

    Hey! I had one of those until about 2 years ago. Must have bought it in the late 1970's (?). Used it so much that the tape guides had to rotated periodically due to wear, but the heads seemed to hold up quite well. Finally tossed it out when the motor failed.

    Cheers, Jim
    A day without music is like a day without food.
  • verbverb Posts: 2,689
    Does Polk have any offerings that would pair nicely with a lower powered (Bottlehead Sex, et, al) amp?
    Basement: Polk SDA 1C's, Micro Seiki MB14 TT, Rotel 1580 Pre, Marantz CD6006 CDP, Carver TX8 Tuner, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, AQ Diamondback (version 1) RCA IC's, MIT Terminator2 Cables
    Office: PC, Marantz AMP-1, Acoustic Technologies Classic Speakers, Polk PSWi225 wireless sub, MIT AVt2 cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Dayens Ampino Integrated, Auris BluMe, Polk TSi200's
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
  • mhardy6647mhardy6647 Posts: 18,018
    verb wrote: »
    Does Polk have any offerings that would pair nicely with a lower powered (Bottlehead Sex, et, al) amp?

    A good question! :)

    No not really. The Monitor Series Model 9A was pretty sensitive and works pretty well with low-powered vacuum tube amplifiers; I don't think I've ever tried them with fleapower, though.

    It is a testable hypothesis :)
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

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

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • verbverb Posts: 2,689
    May the experiments begin! Just arrived today. Bottlehead SEX, circa 2007. Jeez you guys got me going down yet another rabbit hole! :smile:
    eqkgt9qyzpbf.jpg
    Basement: Polk SDA 1C's, Micro Seiki MB14 TT, Rotel 1580 Pre, Marantz CD6006 CDP, Carver TX8 Tuner, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, AQ Diamondback (version 1) RCA IC's, MIT Terminator2 Cables
    Office: PC, Marantz AMP-1, Acoustic Technologies Classic Speakers, Polk PSWi225 wireless sub, MIT AVt2 cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Dayens Ampino Integrated, Auris BluMe, Polk TSi200's
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
  • mhardy6647mhardy6647 Posts: 18,018
    scha-weet.

    Too bad you don't live closer... :p

    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

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

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • Viking64Viking64 Posts: 2,680
    verb wrote: »
    May the experiments begin! Just arrived today. Bottlehead SEX, circa 2007. Jeez you guys got me going down yet another rabbit hole! :smile:
    I'm going to be a nice guy and not respond to any of this. :p
  • verbverb Posts: 2,689
    Another softball for Jimmy! Looking at my new amp got me weak. Defenses down, defenses down! :smile:
    Basement: Polk SDA 1C's, Micro Seiki MB14 TT, Rotel 1580 Pre, Marantz CD6006 CDP, Carver TX8 Tuner, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, AQ Diamondback (version 1) RCA IC's, MIT Terminator2 Cables
    Office: PC, Marantz AMP-1, Acoustic Technologies Classic Speakers, Polk PSWi225 wireless sub, MIT AVt2 cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Dayens Ampino Integrated, Auris BluMe, Polk TSi200's
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
  • msgmsg Posts: 4,149
    You guys get the notification?
    Amp Camp Kits are back in stock. Err, for Pre-Order.
    https://diyaudiostore.com/collections/frontpage/products/amp-camp-amp-kit
  • mhardy6647mhardy6647 Posts: 18,018
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

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

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • mpitogompitogo Posts: 259
    Thanks, preorder is in for two kits. My first mono-blocks!!
    Music-2.0 Raidho D-3.1 | Audio Research Ref 40 | Jeff Roland 925 | Esoteric Grandioso K1 | Transparent Reference, IC, Speaker and Power | HRS SXR Rack
  • heiney9heiney9 Posts: 23,730
    Be fun to get a pair and run them as 20 wpc mono's.
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30 | EE Avant Pre | EE Mini Max Plus DAC | MIT Shotgun S3 | MIT Z P/C's | updated SDA 1C| SQ Box Touch/Welbourne Labs P/S- Tubes add soul!
  • mrbironmrbiron Posts: 4,757
    Son of a!...must resist...
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • verbverb Posts: 2,689
    Resistance is futile! :smile:
    oyjd7fe8qrdj.png
    Basement: Polk SDA 1C's, Micro Seiki MB14 TT, Rotel 1580 Pre, Marantz CD6006 CDP, Carver TX8 Tuner, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, AQ Diamondback (version 1) RCA IC's, MIT Terminator2 Cables
    Office: PC, Marantz AMP-1, Acoustic Technologies Classic Speakers, Polk PSWi225 wireless sub, MIT AVt2 cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Dayens Ampino Integrated, Auris BluMe, Polk TSi200's
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
  • heiney9heiney9 Posts: 23,730
    I am resisting only because I don't have a pre-amp to pair with this. I want it just for the build experience, but it appears to sound very good to excellent as well.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30 | EE Avant Pre | EE Mini Max Plus DAC | MIT Shotgun S3 | MIT Z P/C's | updated SDA 1C| SQ Box Touch/Welbourne Labs P/S- Tubes add soul!
  • ClipdatClipdat Posts: 3,842
    edited May 8
    I'm broke.
    Got Dayens?
  • mpitogompitogo Posts: 259
    edited May 8
    I’m doing it for the experience as well and want to know what class A sounds like.

    Past project: -BTW ignore those speakers, those are RadioShack Optimus, sacrificial set incase my amp project blows up a speaker...


    mthf43k5d6dc.jpeg

    Music-2.0 Raidho D-3.1 | Audio Research Ref 40 | Jeff Roland 925 | Esoteric Grandioso K1 | Transparent Reference, IC, Speaker and Power | HRS SXR Rack
  • mhardy6647mhardy6647 Posts: 18,018
    It is important (essential) to have cannon fodder speakers for test purposes -- especially with direct coupled solid state equipment. Don't ask me how I learned this. ;)
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

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

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • Tony MTony M Posts: 5,460
    I learned the hard way too, but just from hooking up a yard sale receiver purchase to my RT3000P's.

    BAM! :s :(
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • msgmsg Posts: 4,149
    Ouch! :s :(
  • Tony MTony M Posts: 5,460
    edited May 8
    I'm lucky I still have good hearing although ringing started a year or more ago and it has nothing to do with that explosion years ago. I only blew one tweeter. That's all. :o

    Polk Audio made a TOUGH speaker system with those RT3000Ps. To take a direct short and only have one tweeter blow, that's impressive.

    I thought I blew every speaker in all 4 units. My wife jumped up and came into the room to see if I was alright what the heck just happened. It sounded like a truck backfired in the room. I almost soiled myself! :#
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • mpitogompitogo Posts: 259
    Chassis from the kit came in.

    wa93kwiey1gy.jpeg
    Music-2.0 Raidho D-3.1 | Audio Research Ref 40 | Jeff Roland 925 | Esoteric Grandioso K1 | Transparent Reference, IC, Speaker and Power | HRS SXR Rack
  • mrbironmrbiron Posts: 4,757
    I should have bought a pair....dagnabbit! :'(
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • EndersShadowEndersShadow Posts: 15,659
    mrbiron wrote: »
    I should have bought a pair....dagnabbit! :'(

    That Dayens sounds right up your alley!

    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • mrbironmrbiron Posts: 4,757
    mrbiron wrote: »
    I should have bought a pair....dagnabbit! :'(

    That Dayens sounds right up your alley!

    I don't want no stink'n Dayens, I want to sling solder! :p
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • EndersShadowEndersShadow Posts: 15,659
    mrbiron wrote: »
    mrbiron wrote: »
    I should have bought a pair....dagnabbit! :'(

    That Dayens sounds right up your alley!

    I don't want no stink'n Dayens, I want to sling solder! :p

    You barely have time to listen to your Zu's..... solder is a pipe dream lol....
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • mrbironmrbiron Posts: 4,757
    mrbiron wrote: »
    mrbiron wrote: »
    I should have bought a pair....dagnabbit! :'(

    That Dayens sounds right up your alley!

    I don't want no stink'n Dayens, I want to sling solder! :p

    You barely have time to listen to your Zu's..... solder is a pipe dream lol....

    They haven't whispered to me in a good long while. Though they should like where they are heading in t-minus 7 months ;)
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • EndersShadowEndersShadow Posts: 15,659
    mrbiron wrote: »
    They haven't whispered to me in a good long while. Though they should like where they are heading in t-minus 7 months ;)

    I'm very excited for you man! I'm also very jealous lol....
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
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