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

13

Comments

  • mhardy6647mhardy6647 Posts: 19,925
    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
  • mhardy6647mhardy6647 Posts: 19,925
    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: 848
    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: 353
    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: 4,445
    Does Polk have any offerings that would pair nicely with a lower powered (Bottlehead Sex, et, al) amp?
    Basement: Polk SDA SRS, Rega RP1 TT, VTL 2.5 Preamplifier, Enlightened Audio Designs CD Transport, Northstar Designs DAC, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, Wireworld Oasis 8 RCA IC's, MIT Terminator2 Bi-Wire speaker cables
    Office: PC, Marantz CD-1 transport, Marantz AMP-1, Acoustic Technologies Classic Speakers, SVS SB12 Plus Subwoofer, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Dayens Ampino Integrated, Tjoeb 99 tube CD player (modified Marantz CD-38), Project BoxE Bluetooth Streamer, Polk TSi200's
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Furman M8-LX Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
  • mhardy6647mhardy6647 Posts: 19,925
    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: 4,445
    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, Rega RP1 TT, VTL 2.5 Preamplifier, Enlightened Audio Designs CD Transport, Northstar Designs DAC, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, Wireworld Oasis 8 RCA IC's, MIT Terminator2 Bi-Wire speaker cables
    Office: PC, Marantz CD-1 transport, Marantz AMP-1, Acoustic Technologies Classic Speakers, SVS SB12 Plus Subwoofer, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Dayens Ampino Integrated, Tjoeb 99 tube CD player (modified Marantz CD-38), Project BoxE Bluetooth Streamer, Polk TSi200's
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Furman M8-LX Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
  • mhardy6647mhardy6647 Posts: 19,925
    scha-weet.

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

  • Viking64Viking64 Posts: 3,669
    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: 4,445
    Another softball for Jimmy! Looking at my new amp got me weak. Defenses down, defenses down! :smile:
    Basement: Polk SDA SRS, Rega RP1 TT, VTL 2.5 Preamplifier, Enlightened Audio Designs CD Transport, Northstar Designs DAC, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, Wireworld Oasis 8 RCA IC's, MIT Terminator2 Bi-Wire speaker cables
    Office: PC, Marantz CD-1 transport, Marantz AMP-1, Acoustic Technologies Classic Speakers, SVS SB12 Plus Subwoofer, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Dayens Ampino Integrated, Tjoeb 99 tube CD player (modified Marantz CD-38), Project BoxE Bluetooth Streamer, Polk TSi200's
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Furman M8-LX Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
  • msgmsg Posts: 4,366
    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: 303
    Thanks, preorder is in for two kits. My first mono-blocks!!
    Living Room Music-2.0 Polk LSiM 707 | McIntosh C47 | Macintosh MC452 | Denon DP-2500A | Oppo BDP-103 | MacMini
    Family Room Home Theater-7.2.2 (Atmos) Polk LSi25, Martin Logan Motion 50xt, Dual DSW microPRO 3000, fx500, T15, RC65i | Marantz SR7009 | McIntosh MA5200 HT-passthrough & independent 2.0 | Sony UBP-X800 4K | Xbox One S 4K | AppleTV | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, T15 | Onkyo TX-SR705 | Xbox 360 MCE | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Sansui FR-1080
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Master Bedroom (Optical), Office (HDMI), Living Room (Optical), MA5200 (Optical), SR7009 (AVR direct) and Patio (analog). MacMini iTunes multi-stream to any, combo or all.
    Spares: Polk LSiC, CS300, T15, Martin Logan Motion 40, Dynamo 500, Rotel RB-1590, Denon AVR-4802R, Onkyo DX-C540, Nelson Pass ACA v1.6 Monoblocks, Sony CDP-491, STR DE715, DVP-S500D, PS HX-500
    Maintenance: Pro-Ject VC-S Record Cleaning Machine
  • heiney9heiney9 Posts: 23,921
    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: 4,877
    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: 4,445
    Resistance is futile! :smile:
    oyjd7fe8qrdj.png
    Basement: Polk SDA SRS, Rega RP1 TT, VTL 2.5 Preamplifier, Enlightened Audio Designs CD Transport, Northstar Designs DAC, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, Wireworld Oasis 8 RCA IC's, MIT Terminator2 Bi-Wire speaker cables
    Office: PC, Marantz CD-1 transport, Marantz AMP-1, Acoustic Technologies Classic Speakers, SVS SB12 Plus Subwoofer, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Dayens Ampino Integrated, Tjoeb 99 tube CD player (modified Marantz CD-38), Project BoxE Bluetooth Streamer, Polk TSi200's
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Furman M8-LX Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
  • heiney9heiney9 Posts: 23,921
    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: 5,212
    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: 303
    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 LSiM 707 | McIntosh C47 | Macintosh MC452 | Denon DP-2500A | Oppo BDP-103 | MacMini
    Family Room Home Theater-7.2.2 (Atmos) Polk LSi25, Martin Logan Motion 50xt, Dual DSW microPRO 3000, fx500, T15, RC65i | Marantz SR7009 | McIntosh MA5200 HT-passthrough & independent 2.0 | Sony UBP-X800 4K | Xbox One S 4K | AppleTV | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, T15 | Onkyo TX-SR705 | Xbox 360 MCE | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Sansui FR-1080
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Master Bedroom (Optical), Office (HDMI), Living Room (Optical), MA5200 (Optical), SR7009 (AVR direct) and Patio (analog). MacMini iTunes multi-stream to any, combo or all.
    Spares: Polk LSiC, CS300, T15, Martin Logan Motion 40, Dynamo 500, Rotel RB-1590, Denon AVR-4802R, Onkyo DX-C540, Nelson Pass ACA v1.6 Monoblocks, Sony CDP-491, STR DE715, DVP-S500D, PS HX-500
    Maintenance: Pro-Ject VC-S Record Cleaning Machine
  • mhardy6647mhardy6647 Posts: 19,925
    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: 6,793
    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: 4,366
    Ouch! :s :(
    I disabled signatures.
  • Tony MTony M Posts: 6,793
    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: 303
    Chassis from the kit came in.

    wa93kwiey1gy.jpeg
    Living Room Music-2.0 Polk LSiM 707 | McIntosh C47 | Macintosh MC452 | Denon DP-2500A | Oppo BDP-103 | MacMini
    Family Room Home Theater-7.2.2 (Atmos) Polk LSi25, Martin Logan Motion 50xt, Dual DSW microPRO 3000, fx500, T15, RC65i | Marantz SR7009 | McIntosh MA5200 HT-passthrough & independent 2.0 | Sony UBP-X800 4K | Xbox One S 4K | AppleTV | HTPC | Sony 75” XBR X850D 4K
    Office Home Theater-5.1 Polk RT55, CS400, PSW450, T15 | Onkyo TX-SR705 | Xbox 360 MCE | AppleTV | Samsung 55”
    Office Music-2.0 KEF Q100 | Sansui AU-6900 | Sansui FR-1080
    Master Bedroom Music-2.0 Totem Hawk | Rotel RA-1570
    Patio Music-2.0 Polk Atrium8 | AMC 2445 bridged
    Airplay zones: Family Room (HDMI), Master Bedroom (Optical), Office (HDMI), Living Room (Optical), MA5200 (Optical), SR7009 (AVR direct) and Patio (analog). MacMini iTunes multi-stream to any, combo or all.
    Spares: Polk LSiC, CS300, T15, Martin Logan Motion 40, Dynamo 500, Rotel RB-1590, Denon AVR-4802R, Onkyo DX-C540, Nelson Pass ACA v1.6 Monoblocks, Sony CDP-491, STR DE715, DVP-S500D, PS HX-500
    Maintenance: Pro-Ject VC-S Record Cleaning Machine
  • mrbironmrbiron Posts: 4,877
    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: 16,209
    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: 4,877
    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: 16,209
    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: 4,877
    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: 16,209
    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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