Dynaco ST-70 redone the Wardsweb way

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Wardsweb
Wardsweb Posts: 943
edited March 2010 in DIY, Mods & Tweaks
Here is my latest project. A rebirth of a classic Dynaco ST-70 with some upgraded parts, circuit, chassis and cabinet.


st70_31.jpg


st70_33.jpg
Post edited by Wardsweb on
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  • halo71
    halo71 Posts: 4,640
    edited March 2010
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    All I can say is.....WOW! That is maybe the sexiest amp I have ever seen.
    --Gary--
    Onkyo Integra M504, Bottlehead Foreplay III, Denon SACD, Thiel CS2.3, NHT VT-2, VT-3 and Evolution T6, Infinity RSIIIa, SDA1C and a few dozen other speakers around the house I change in and out.
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  • Conradicles
    Conradicles Posts: 6,412
    edited March 2010
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    Off the charts on the cool factor. Great job!
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  • jrgoswick
    jrgoswick Posts: 159
    edited March 2010
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    Tubes, curves, and beautiful wood-TOTALLY EFFING BEAUTIFUL, but how's it sound?
    Onkyo TX-SR705 AVR
    Onkyo M-501-Given to my father.
    Onkyo DX-C730 CD Changer
    Onkyo DV-BD507 Blu Ray player
    Onkyo CP-1036A turntable with Grado, Audio Technique, and Azden cartridges(GOT CARTRIDGE??)
    Polk Monitor 12's with RDO's and XO's
    Polk CS300 Center
    Polk Monitor Series 4 rears

    EBAY is like cocaine. At first you only look, next thing you know, your house is full of crap you have no idea why you own.:eek:
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  • HB27
    HB27 Posts: 1,518
    edited March 2010
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    Excellent blending of the New and Old worlds.
    The ST-70s are a great foundation for an amp.
    I like your thinking here.
    Harry
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  • wutadumsn23
    wutadumsn23 Posts: 3,702
    edited March 2010
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    Wow, a work of art man. Very well done.

    -Jeff
    HT Rig
    Receiver- Onkyo TX-SR806
    Mains- Polk Audio Monitor 70
    Center- Polk Audio CS2
    Surrounds- Polk Audio TSi 500's :D
    Sub- Polk Audio PSW125
    Retired- Polk Audio Monitor 40's
    T.V.- 60" Sony SXRD KDS-60A2000 LCoS
    Blu-Ray- 80 GB PS3


    2 CH rig (in progress)
    Polk Audio Monitor 10A's :cool:

    It's not that I'm insensitive, I just don't care.. :D
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  • BlueMDPicker
    BlueMDPicker Posts: 7,569
    edited March 2010
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    Superb! Is all the iron new?
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  • RuSsMaN
    RuSsMaN Posts: 17,985
    edited March 2010
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    I dig it Luther, but the one thing that jumps out at me - all that work, and cheese out on the binders?

    Cheers,
    Russ
    Check your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service.
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  • Timothy Smith
    Timothy Smith Posts: 764
    edited March 2010
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    That thing is absolutley a piece of art!

    How does it sound?
    Norh ACA-2B tube pre, Sumo Andromeda SS amp. Magneplanar MMG speakers, M&K MX1250 Subwoofer, Pro-Ject RM1.3 Genie TT with Sumiko Pearl MM cart., Keces DAC, Cambridge Audio Azur 640c CD player
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  • steveinaz
    steveinaz Posts: 19,546
    edited March 2010
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    Gorgeous.
    Source: Bluesound Node 2i - Preamp/DAC: Benchmark DAC2 DX - Amp: Parasound Halo A21 - Speakers: MartinLogan Motion 60XTi - Shop Rig: Yamaha A-S501 Integrated - Source: Rotel CD14MkII CD Player - Speakers: Elac Debut 2.0 B5.2
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  • Joe Humbert
    Joe Humbert Posts: 189
    edited March 2010
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    Absolutely beautiful! Awesome.
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  • polkatese
    polkatese Posts: 6,767
    edited March 2010
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    Amazingly good lookin'!
    I am sorry, I have no opinion on the matter. I am sure you do. So, don't mind me, I just want to talk audio and pie.
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  • [Deleted User]
    [Deleted User] Posts: 7,598
    edited March 2010
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    Beautiful craftsmanship! Very nicely done!
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  • Disc Jockey
    Disc Jockey Posts: 1,013
    edited March 2010
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    Drool. Man that looks nice!
    "The secret of happiness is freedom. The secret of freedom is courage." Thucydides
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  • Wardsweb
    Wardsweb Posts: 943
    edited March 2010
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    BlueMDPicker wrote: »
    Superb! Is all the iron new?

    The power transformer is an upgrade. The output transformers are original.
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  • Wardsweb
    Wardsweb Posts: 943
    edited March 2010
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    RuSsMaN wrote: »
    I dig it Luther, but the one thing that jumps out at me - all that work, and cheese out on the binders?

    Cheers,
    Russ

    I used what I had. You have something laying around that would work better?
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  • RuSsMaN
    RuSsMaN Posts: 17,985
    edited March 2010
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    Might have some Cardas, I'll look around. Don't get me wrong, just my eyes went straight to the posts on the rear view.

    Cheers,
    Russ
    Check your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service.
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  • vc69
    vc69 Posts: 2,500
    edited March 2010
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    That is mighty sweet man. I wonder what it would sound like driving my 90's with my 2.5 in front of it?

    Seriously, beautiful job.
    -Kevin
    HT: Philips 52PFL7432D 52" LCD 1080p / Onkyo TX-SR 606 / Oppo BDP-83 SE / Comcast cable. (all HDMI)B&W 801 - Front, Polk CS350 LS - Center, Polk LS90 - Rear
    2 Channel:
    Oppo BDP-83 SE
    Squeezebox Touch
    Muscial Fidelity M1 DAC
    VTL 2.5
    McIntosh 2205 (refurbed)
    B&W 801's
    Transparent IC's
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  • Wardsweb
    Wardsweb Posts: 943
    edited March 2010
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    I've put up a site on the build. You may see details on the build here:

    http://wardsweb.org/audio/ST70/
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  • Wardsweb
    Wardsweb Posts: 943
    edited March 2010
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    RuSsMaN wrote: »
    Might have some Cardas, I'll look around. Don't get me wrong, just my eyes went straight to the posts on the rear view.

    Cheers,
    Russ

    Shoot me a PM or drop me an email, if you find something.
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  • BlueMDPicker
    BlueMDPicker Posts: 7,569
    edited March 2010
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    Wardsweb wrote: »
    The power transformer is an upgrade. The output transformers are original.

    Cool! I bet it sounds wonderful.
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited March 2010
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    ....wow.....
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  • John30_30
    John30_30 Posts: 1,024
    edited March 2010
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    Wardsweb wrote: »
    Here is my latest project. A rebirth of a classic Dynaco ST-70 with some upgraded parts, circuit, chassis and cabinet.


    st70_31.jpg

    Mmmmmm, yummy. Cocobolo?
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  • Wardsweb
    Wardsweb Posts: 943
    edited March 2010
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    John30_30 wrote: »
    Mmmmmm, yummy. Cocobolo?

    Yes sir, give the man a C-gar. Cocobolo it is with a semi gloss lacquer finish.
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  • george daniel
    george daniel Posts: 12,096
    edited March 2010
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    Wow,, what a talent you have sir.:)
    JC approves....he told me so. (F-1 nut)
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  • bikerboy
    bikerboy Posts: 1,239
    edited March 2010
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    Superb work. I bet it sounds as good as it looks.
    Main system: Lyngdorf TDAI-2170 w Polk LSiM 703/ Pioneer 42" plasma w Flex Streamer, Sangaen HDT-1tuner
    Vinyl: Nothingham Spacedeck->Pioneer PL L1000 linear arm->Soundsmith DL 103R w Contact line stylus->SUT->
    Bottlehead Eros
    Digital: I7 PC w/ Jriver playing flac -> Sonore Ultrarendu -> Twisted Pair Audio ESS 9028 w/ Mercury IVY
    CD: DIY Shigaclone
    Vinyl rips: ESI Juli@24/192->Goldwave->i7 PC server
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  • engtaz
    engtaz Posts: 7,675
    edited March 2010
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    Sweet. Great work.
    engtaz

    I love how music can brighten up a bad day.
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