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

13

Comments

  • mhardy6647mhardy6647 Posts: 24,541
    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! :)
  • ALL212ALL212 Posts: 1,171
    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
    Enabler Extraordinaire
  • Jim ShearerJim Shearer Posts: 367
    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: 9,032
    Does Polk have any offerings that would pair nicely with a lower powered (Bottlehead Sex, et, al) amp?
    Basement: Polk SDA SRS,Cary SLP-05 Pre,Enlightened Audio Designs CD Transport,Northstar Designs Excelsio DAC,Cambridge 851N streamer,Marantz SA-14 SACD,McIntosh MC300 Amp,Silnote Morpheus Ref2 Digital Cable,Furman 15PFi Power Conditioner,Pangea Power Cables,Wireworld Oasis 8 RCA IC's,MIT Shotgun S3 IC's,MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC,EAR Acute CD Player,EAR 834L Pre,Northstar Designs Intenso DAC,PASS ACA Monoblocks,Denon UDR-F10 Cassette,Acoustic Technologies Classic FR Speakers,SVS SB12 Plus sub,MIT AVt2 speaker cables,IFI Purifier2,AQ Cinnamon USB cable,Groneberg Quatro Reference IC's
    Spare Room: Antique Sound Labs Wave AV-8 Monoblocks,Tisbury Mini Passive Pre,Tjoeb 99 tube CD player (modified Marantz CD-38),Analysis Plus Oval 9's,Zu Jumpers,AudioEngine B1 Streamer,Klipsch RB-61 v2,SVS PB1000 sub,Blue Jeans RCA IC's
    Living Room: Peachtree Nova Integrated,Cambridge CXN v2 Streamer,Rotel RCD-1072 CD player,Furman 15PFi Power Conditioner,Polk RT265 In Wall Speakers,Polk DSW Pro 660wi sub
  • mhardy6647mhardy6647 Posts: 24,541
    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 :)
  • verbverb Posts: 9,032
    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 SRS,Cary SLP-05 Pre,Enlightened Audio Designs CD Transport,Northstar Designs Excelsio DAC,Cambridge 851N streamer,Marantz SA-14 SACD,McIntosh MC300 Amp,Silnote Morpheus Ref2 Digital Cable,Furman 15PFi Power Conditioner,Pangea Power Cables,Wireworld Oasis 8 RCA IC's,MIT Shotgun S3 IC's,MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC,EAR Acute CD Player,EAR 834L Pre,Northstar Designs Intenso DAC,PASS ACA Monoblocks,Denon UDR-F10 Cassette,Acoustic Technologies Classic FR Speakers,SVS SB12 Plus sub,MIT AVt2 speaker cables,IFI Purifier2,AQ Cinnamon USB cable,Groneberg Quatro Reference IC's
    Spare Room: Antique Sound Labs Wave AV-8 Monoblocks,Tisbury Mini Passive Pre,Tjoeb 99 tube CD player (modified Marantz CD-38),Analysis Plus Oval 9's,Zu Jumpers,AudioEngine B1 Streamer,Klipsch RB-61 v2,SVS PB1000 sub,Blue Jeans RCA IC's
    Living Room: Peachtree Nova Integrated,Cambridge CXN v2 Streamer,Rotel RCD-1072 CD player,Furman 15PFi Power Conditioner,Polk RT265 In Wall Speakers,Polk DSW Pro 660wi sub
  • mhardy6647mhardy6647 Posts: 24,541
    scha-weet.

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

  • Viking64Viking64 Posts: 4,835
    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: 9,032
    Another softball for Jimmy! Looking at my new amp got me weak. Defenses down, defenses down! :smile:
    Basement: Polk SDA SRS,Cary SLP-05 Pre,Enlightened Audio Designs CD Transport,Northstar Designs Excelsio DAC,Cambridge 851N streamer,Marantz SA-14 SACD,McIntosh MC300 Amp,Silnote Morpheus Ref2 Digital Cable,Furman 15PFi Power Conditioner,Pangea Power Cables,Wireworld Oasis 8 RCA IC's,MIT Shotgun S3 IC's,MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC,EAR Acute CD Player,EAR 834L Pre,Northstar Designs Intenso DAC,PASS ACA Monoblocks,Denon UDR-F10 Cassette,Acoustic Technologies Classic FR Speakers,SVS SB12 Plus sub,MIT AVt2 speaker cables,IFI Purifier2,AQ Cinnamon USB cable,Groneberg Quatro Reference IC's
    Spare Room: Antique Sound Labs Wave AV-8 Monoblocks,Tisbury Mini Passive Pre,Tjoeb 99 tube CD player (modified Marantz CD-38),Analysis Plus Oval 9's,Zu Jumpers,AudioEngine B1 Streamer,Klipsch RB-61 v2,SVS PB1000 sub,Blue Jeans RCA IC's
    Living Room: Peachtree Nova Integrated,Cambridge CXN v2 Streamer,Rotel RCD-1072 CD player,Furman 15PFi Power Conditioner,Polk RT265 In Wall Speakers,Polk DSW Pro 660wi sub
  • msgmsg Posts: 5,267
    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
    I disabled signatures.
  • mpitogompitogo Posts: 411
    Thanks, preorder is in for two kits. My first mono-blocks!!
    Living Room Music-2.0 Polk Legend L800 | McIntosh C47 | McIntosh MA5200 (Treble) | McIntosh MC452 (Bass) | Sublimeacoustic K231 Active xover | Denon DP-2500A | Denafrips Aries II | Amazon Music Ultra HD via iPad Pro
    Family Room Home Theater-7.2.2 (Atmos) Polk LSiM 707, 706c, Dual DSW microPRO 3000, LSiM 702 F/X [x4], RC65i | Marantz SR7009 | Marantz PM-10 [FL/FR] | SA-10 | Sony UBP-X800 4K | Xbox One S 4K | AppleTV 4K | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, f/x 500 | Onkyo TX-SR705 | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Topping DX7s | Sansui FR-1080
    Office Music 2-2.0 Klipsch RP-600M | Topping DX7s (BAL out) | PASS ACA (kit) Class A balanced monoblocks
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Family Room SA-10 (optical), Master Bedroom (Optical), Office (HDMI), Office DX7s (optical), Living Room Ares (Optical), SR7009 (AVR direct) and Patio (analog). Apple Music multi-stream to any, combo or all.
    Spares: Polk LSi25, LSiC, CS300, 4pr T15, Martin Logan Motion 40, 50xt, Dynamo 500, Rotel RB-1590, Denon AVR-4802R, Onkyo DX-C540, DVP-S500D, PS HX-500,
    Maintenance: Pro-Ject VC-S Record Cleaning Machine
  • heiney9heiney9 Posts: 24,134
    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: 5,212
    Son of a!...must resist...
    Zu Audio Omen MK-1B's, Peachtree Decco65, Zu Mission sC’s

    Collecting Dust - Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, HTPC, One, Bottlehead Crack w/Speedball, Senn's MD HD600
  • verbverb Posts: 9,032
    Resistance is futile! :smile:
    oyjd7fe8qrdj.png
    Basement: Polk SDA SRS,Cary SLP-05 Pre,Enlightened Audio Designs CD Transport,Northstar Designs Excelsio DAC,Cambridge 851N streamer,Marantz SA-14 SACD,McIntosh MC300 Amp,Silnote Morpheus Ref2 Digital Cable,Furman 15PFi Power Conditioner,Pangea Power Cables,Wireworld Oasis 8 RCA IC's,MIT Shotgun S3 IC's,MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC,EAR Acute CD Player,EAR 834L Pre,Northstar Designs Intenso DAC,PASS ACA Monoblocks,Denon UDR-F10 Cassette,Acoustic Technologies Classic FR Speakers,SVS SB12 Plus sub,MIT AVt2 speaker cables,IFI Purifier2,AQ Cinnamon USB cable,Groneberg Quatro Reference IC's
    Spare Room: Antique Sound Labs Wave AV-8 Monoblocks,Tisbury Mini Passive Pre,Tjoeb 99 tube CD player (modified Marantz CD-38),Analysis Plus Oval 9's,Zu Jumpers,AudioEngine B1 Streamer,Klipsch RB-61 v2,SVS PB1000 sub,Blue Jeans RCA IC's
    Living Room: Peachtree Nova Integrated,Cambridge CXN v2 Streamer,Rotel RCD-1072 CD player,Furman 15PFi Power Conditioner,Polk RT265 In Wall Speakers,Polk DSW Pro 660wi sub
  • heiney9heiney9 Posts: 24,134
    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: 7,560
    edited May 2018
    I'm broke.
    "Electronic music is human sound adapting to indulge technology, and for some, it feels like the signature sound of energy. New and abstract sounds over hypnotic rhythms can conjure vast soundscapes for escape, pleasure, and transcendence."
  • mpitogompitogo Posts: 411
    edited May 2018
    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

    Living Room Music-2.0 Polk Legend L800 | McIntosh C47 | McIntosh MA5200 (Treble) | McIntosh MC452 (Bass) | Sublimeacoustic K231 Active xover | Denon DP-2500A | Denafrips Aries II | Amazon Music Ultra HD via iPad Pro
    Family Room Home Theater-7.2.2 (Atmos) Polk LSiM 707, 706c, Dual DSW microPRO 3000, LSiM 702 F/X [x4], RC65i | Marantz SR7009 | Marantz PM-10 [FL/FR] | SA-10 | Sony UBP-X800 4K | Xbox One S 4K | AppleTV 4K | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, f/x 500 | Onkyo TX-SR705 | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Topping DX7s | Sansui FR-1080
    Office Music 2-2.0 Klipsch RP-600M | Topping DX7s (BAL out) | PASS ACA (kit) Class A balanced monoblocks
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Family Room SA-10 (optical), Master Bedroom (Optical), Office (HDMI), Office DX7s (optical), Living Room Ares (Optical), SR7009 (AVR direct) and Patio (analog). Apple Music multi-stream to any, combo or all.
    Spares: Polk LSi25, LSiC, CS300, 4pr T15, Martin Logan Motion 40, 50xt, Dynamo 500, Rotel RB-1590, Denon AVR-4802R, Onkyo DX-C540, DVP-S500D, PS HX-500,
    Maintenance: Pro-Ject VC-S Record Cleaning Machine
  • mhardy6647mhardy6647 Posts: 24,541
    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. ;)
  • Tony MTony M Posts: 8,651
    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: 5,267
    Ouch! :s:(
    I disabled signatures.
  • Tony MTony M Posts: 8,651
    edited May 2018
    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: 411
    Chassis from the kit came in.

    wa93kwiey1gy.jpeg
    Living Room Music-2.0 Polk Legend L800 | McIntosh C47 | McIntosh MA5200 (Treble) | McIntosh MC452 (Bass) | Sublimeacoustic K231 Active xover | Denon DP-2500A | Denafrips Aries II | Amazon Music Ultra HD via iPad Pro
    Family Room Home Theater-7.2.2 (Atmos) Polk LSiM 707, 706c, Dual DSW microPRO 3000, LSiM 702 F/X [x4], RC65i | Marantz SR7009 | Marantz PM-10 [FL/FR] | SA-10 | Sony UBP-X800 4K | Xbox One S 4K | AppleTV 4K | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, f/x 500 | Onkyo TX-SR705 | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Topping DX7s | Sansui FR-1080
    Office Music 2-2.0 Klipsch RP-600M | Topping DX7s (BAL out) | PASS ACA (kit) Class A balanced monoblocks
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Family Room SA-10 (optical), Master Bedroom (Optical), Office (HDMI), Office DX7s (optical), Living Room Ares (Optical), SR7009 (AVR direct) and Patio (analog). Apple Music multi-stream to any, combo or all.
    Spares: Polk LSi25, LSiC, CS300, 4pr T15, Martin Logan Motion 40, 50xt, Dynamo 500, Rotel RB-1590, Denon AVR-4802R, Onkyo DX-C540, DVP-S500D, PS HX-500,
    Maintenance: Pro-Ject VC-S Record Cleaning Machine
  • mrbironmrbiron Posts: 5,212
    I should have bought a pair....dagnabbit! :'(
    Zu Audio Omen MK-1B's, Peachtree Decco65, Zu Mission sC’s

    Collecting Dust - Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, HTPC, One, Bottlehead Crack w/Speedball, Senn's MD HD600
  • EndersShadowEndersShadow Posts: 17,035
    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: 5,212
    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, Zu Mission sC’s

    Collecting Dust - Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, HTPC, One, Bottlehead Crack w/Speedball, Senn's MD HD600
  • EndersShadowEndersShadow Posts: 17,035
    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: 5,212
    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, Zu Mission sC’s

    Collecting Dust - Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, HTPC, One, Bottlehead Crack w/Speedball, Senn's MD HD600
  • EndersShadowEndersShadow Posts: 17,035
    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)
  • stretchlstretchl Posts: 1,319
    edited July 2018
    Anyone reckon the Pass amp would work well with a pair of 705’s? Or perhaps as monoblocks, which apparently is a build option? Thanks.
    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
    - Isaac Asimov

    Hi-Fi
    Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
    Cabling by Groneberg
    Visuals
    http://StretchPhotography.com
    http://Vimeo.com/channels/stretchphoto
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