+ Reply to Thread
Page 3 of 4 FirstFirst 1234 LastLast
Results 21 to 30 of 38

Thread: Taket Batpure - technical questions involving gain, stepup and maths ...

  1. #21
    Join Date: Jan 2009

    Location: Essex

    Posts: 16,454
    I'm openingabottleofwine.

    Default

    Ah understood - I was misled by your citation of my post, the first paragraph of which was in response to danilo's sarcastic comments.
    Have you listened to this month's choice in the Album Club?

    Barry

  2. #22
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 2,255
    I'm Tom.

    Default

    Back on topic .. I've acquired an interesting 3D printing template for some stands for batpures (and there's a company in Holland which can run them up at reasonable cost) ... I ended up buying a pair of stainless steel factory made ones and selling on my 'loose' one, but I'm curious now what doubling Batpures up might sound like.

    Can any of the technical boffins tell me what would be the best way to get maximum output from them - wiring in parallel (as they are at the moment with the main speaker) or in series? By parallel I mean wiring both pairs back to the amp individually, both to + or - respectively. By series I'm not quite sure what I mean (!) or even if that's possible.

    They are a 4kohm load and 70 db efficiency so I'm looking to improve the overall output/efficiency from having two pairs. The 4kohm load as it stands seems to have no impact on the amp's performance.
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 / Ortofon 309 Limited tonearms; Cartridges Stereo - Miyajima Madake, Ortofon SPU Royal N + Shure M3D Jico stylus; Mono - Miyajimas - Zero 0.7, Premium 1.0 retipped by Ana Mighty Sound bamboo cantilever, Spirit '78' 3.0 conical from Ana, also vintage GE VRII, Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Duncan 'Tuberhunter' 200w class D; preamp - Pass DCB1; Vinyl: Garrard 401 with AT1503 tonearm and vintage SPU-GE; SUTs - Ortofon 2-15k & Bob's Devices; Phono Stage: Schiit Mani; Digital - Trichord Genesis III CDP + Arcam rBlink; Schiit Multibit DAC.

  3. #23
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 3,802
    I'm Alan.

    Default

    Definitely wire them in parallel for max output.

    In series each would only receive half the output voltage, so only 1/4 of the available power

  4. #24
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 2,255
    I'm Tom.

    Default

    Quote Originally Posted by Firebottle View Post
    Definitely wire them in parallel for max output.

    In series each would only receive half the output voltage, so only 1/4 of the available power
    Thanks Alan.

    Would there be any impedance impact running them in parallel?
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 / Ortofon 309 Limited tonearms; Cartridges Stereo - Miyajima Madake, Ortofon SPU Royal N + Shure M3D Jico stylus; Mono - Miyajimas - Zero 0.7, Premium 1.0 retipped by Ana Mighty Sound bamboo cantilever, Spirit '78' 3.0 conical from Ana, also vintage GE VRII, Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Duncan 'Tuberhunter' 200w class D; preamp - Pass DCB1; Vinyl: Garrard 401 with AT1503 tonearm and vintage SPU-GE; SUTs - Ortofon 2-15k & Bob's Devices; Phono Stage: Schiit Mani; Digital - Trichord Genesis III CDP + Arcam rBlink; Schiit Multibit DAC.

  5. #25
    Join Date: Apr 2012

    Location: Southall, West London

    Posts: 30,129
    I'm Geoff.

    Default

    At 4kOhm impedance, in practise you could run as many as you wanted in parallel........... Half a dozen?
    Mr. Tact!

    "when common sense, logic and plausibility are ruled out. All that remain are lies and foolishness"


    Gear: MMs/ADCs/Low output MC's/One rare Japanese SUT/one scarce British phono stage/various tonearms/two hefty Japanese DD TT's/hefty Japanese BD TT/smaller Japanese BD TT and small British BD TT. One CD transport/3 CD players/2 jitter buster/2 DACs/Valve buffer. One MD deck. One tuner. Two TVC pre-amps/two valve pre-amps/solid state pre-amp/passive pre-amp. Current dumping power-amp or either of two Class A SS power-amp or Class A EL34 valve monos or big Japanese (part Class A) integrated. Big dual concentric speakers/Smaller dual concentric speakers/two way British compacts and full range speakers, amongst others. And too much more to list!

  6. #26
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 2,255
    I'm Tom.

    Default

    Cheers Alan. I might give it a go. (Two pairs I mean, not half a dozen!). Sorry for the noddy questions.
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 / Ortofon 309 Limited tonearms; Cartridges Stereo - Miyajima Madake, Ortofon SPU Royal N + Shure M3D Jico stylus; Mono - Miyajimas - Zero 0.7, Premium 1.0 retipped by Ana Mighty Sound bamboo cantilever, Spirit '78' 3.0 conical from Ana, also vintage GE VRII, Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Duncan 'Tuberhunter' 200w class D; preamp - Pass DCB1; Vinyl: Garrard 401 with AT1503 tonearm and vintage SPU-GE; SUTs - Ortofon 2-15k & Bob's Devices; Phono Stage: Schiit Mani; Digital - Trichord Genesis III CDP + Arcam rBlink; Schiit Multibit DAC.

  7. #27
    Join Date: Apr 2012

    Location: Southall, West London

    Posts: 30,129
    I'm Geoff.

    Default

    It was Geoff. Not Alan.

    You certainly won't hurt anything using two pairs in parallel. That'll give you a 3db increase in output.
    Mr. Tact!

    "when common sense, logic and plausibility are ruled out. All that remain are lies and foolishness"


    Gear: MMs/ADCs/Low output MC's/One rare Japanese SUT/one scarce British phono stage/various tonearms/two hefty Japanese DD TT's/hefty Japanese BD TT/smaller Japanese BD TT and small British BD TT. One CD transport/3 CD players/2 jitter buster/2 DACs/Valve buffer. One MD deck. One tuner. Two TVC pre-amps/two valve pre-amps/solid state pre-amp/passive pre-amp. Current dumping power-amp or either of two Class A SS power-amp or Class A EL34 valve monos or big Japanese (part Class A) integrated. Big dual concentric speakers/Smaller dual concentric speakers/two way British compacts and full range speakers, amongst others. And too much more to list!

  8. #28
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 38,524
    I'm Grant.

    Default

    yup the resistance drop is negligable
    Regards,
    Grant ....

    I've said it before and I'll say it again: democracy simply-doesn't-work
    .... ..... ...... ...... ................... ..... ..... ..... ..... .....
    DENON DV2900 - TWIN PRO MONOBLOCK AMPLIFIERS - XIANG SHENG DAC\PRE\HEADPHONE AMP - AVANTREE OASIS CLASS 1 BLUETOOTH - AUDIO TECHNICA ATH-MSR7 & OPPO PM-3 PLANAR HEADPHONES - WIN10 JRIVER23, DEEZER HiFi - ECHO DOT - SMSL M6 MINIDAC - FULL RANGE TWIN TELEFUNKEN's - Q ACOUSTIC BT3 actives - CANTON SUB - MAINS REGENERATED.

  9. #29
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 2,255
    I'm Tom.

    Default

    Quote Originally Posted by walpurgis View Post
    It was Geoff. Not Alan.

    You certainly won't hurt anything using two pairs in parallel. That'll give you a 3db increase in output.
    Whoops! Apologies.
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 / Ortofon 309 Limited tonearms; Cartridges Stereo - Miyajima Madake, Ortofon SPU Royal N + Shure M3D Jico stylus; Mono - Miyajimas - Zero 0.7, Premium 1.0 retipped by Ana Mighty Sound bamboo cantilever, Spirit '78' 3.0 conical from Ana, also vintage GE VRII, Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Duncan 'Tuberhunter' 200w class D; preamp - Pass DCB1; Vinyl: Garrard 401 with AT1503 tonearm and vintage SPU-GE; SUTs - Ortofon 2-15k & Bob's Devices; Phono Stage: Schiit Mani; Digital - Trichord Genesis III CDP + Arcam rBlink; Schiit Multibit DAC.

  10. #30
    Join Date: Jan 2013

    Location: Bristol

    Posts: 3,402
    I'm Justin.

    Default

    Quote Originally Posted by montesquieu View Post
    Whoops! Apologies.
    70DB efficient. Why is it so low anyone?

    Getting a test mic on the output of these things would be really useful - given a good enough test mic and a high sampling rate.

    I'd need to know what I was really getting before I could make any sensible judgements.

+ Reply to Thread
Page 3 of 4 FirstFirst 1234 LastLast



 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •