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March 30, 2020, 12:20:56 AM

Author Topic: New Personalized Kaiju  (Read 675 times)

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Offline Alonzo

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New Personalized Kaiju
« on: May 14, 2019, 06:31:34 PM »
Thank you PB for a great build.  It would've taken me a month of good days to get this done.  Got 5 (5.1 and 5.7 mv) for hum.  I will listen for awhile to see if the DC filaments are needed. Now realize I must retire some amps to the garage.  Well, it's time I simplified my setup.
Now for burn in and speaker selection and tube swapping...
Alonzo
Alonzo B
BeePre, Kaiju, some Stereomours (I's and a II as 45 and 2A3) to DT150 tweeters, GPA 802-8G's on Jabo horns, Altec 414z's, Vidar to Dayton Audio VS8 Subwoofers.
Stereomour I to Altec 299-8A w/ MRII horns.  Seductor to Mk3 Frugal horns
SR-45 amp to HD800's
Box and one (DIY amp) to Koss ESP950

Offline Paul Birkeland

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Re: New Personalized Kaiju
« Reply #1 on: May 14, 2019, 09:23:57 PM »
I'm glad it made it safely! How did that expanding foam cradle work out? 

I got pretty lucky with all those big caps, there's only about 1/16" of clearance left between the lowest hanging caps and the counter top.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Alonzo

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Re: New Personalized Kaiju
« Reply #2 on: May 15, 2019, 04:17:16 AM »
The expanding foam is a good idea, kept everything stable (along with the metric butt-ton of packing peanuts).  I see what you mean by the chicken head knobs, I replaced them with the larger set but they still sit too high, will change to black knurled knobs.
I got a pair of GE 5 star 5670's, should I check the driver voltage (175v) at each tube swap?
Alonzo B
BeePre, Kaiju, some Stereomours (I's and a II as 45 and 2A3) to DT150 tweeters, GPA 802-8G's on Jabo horns, Altec 414z's, Vidar to Dayton Audio VS8 Subwoofers.
Stereomour I to Altec 299-8A w/ MRII horns.  Seductor to Mk3 Frugal horns
SR-45 amp to HD800's
Box and one (DIY amp) to Koss ESP950

Offline Deke609

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Re: New Personalized Kaiju
« Reply #3 on: May 15, 2019, 04:36:14 AM »
Pretty cool.

It looks like the plate chokes are mounted on standoffs - assuming this is the case, is this for ease of wire routing, or does it serve some other/additional purpose (e.g., additional distance from the OTs above)?

Thanks,

Derek
Derek
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Roon Intel NUC ->  Yggdrasil DAC -> BeePre (w/ BeeQuiet and EML 300B)  -> Kaiju (w/ DCFil and EML 300B) or Stereomour II (2A3 [EML Mesh] and 45 Conversion [EML 45B])  -> Audeze LCD4

Offline Paul Birkeland

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Re: New Personalized Kaiju
« Reply #4 on: May 15, 2019, 05:02:53 AM »
If the driver plate voltage is off by a few volts, it isn't going to be particularly audible.  If you plan to roll a lot of driver tubes, you could just set each cathode at about 4.2V and not worry about it till you have the pair you like.

The chokes are mounted on standoffs because the output transformers have been changed from our OT-5 to a pair of TFA-2004.  In order to keep each TFA-2004 centered on each 300B, the transformer leads needed to pass right through the space now occupied by the plate choke, so I spaced them up off the chassis.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline borism

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Re: New Personalized Kaiju
« Reply #5 on: May 17, 2019, 07:09:38 AM »
What is the benefit of the TFA-2004 output transformer?
Boris

Offline Paul Birkeland

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Re: New Personalized Kaiju
« Reply #6 on: May 17, 2019, 08:25:55 AM »
What is the benefit of the TFA-2004 output transformer?
That particular pair is a one-off TFA-2004 with four different lamination materials and silver wire on the secondary.  It's a different flavor. 
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Deke609

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Re: New Personalized Kaiju
« Reply #7 on: May 17, 2019, 09:18:25 AM »
The Magnequest "Mexico"?
Derek
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Roon Intel NUC ->  Yggdrasil DAC -> BeePre (w/ BeeQuiet and EML 300B)  -> Kaiju (w/ DCFil and EML 300B) or Stereomour II (2A3 [EML Mesh] and 45 Conversion [EML 45B])  -> Audeze LCD4

Offline Alonzo

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Re: New Personalized Kaiju
« Reply #8 on: May 17, 2019, 09:54:41 AM »
Yep,
I was luckily going back and forth with Mike when these came out and ordered 2 of the three, I should've gotten them all.  The other pair is in a Stereomour II.
Alonzo B
BeePre, Kaiju, some Stereomours (I's and a II as 45 and 2A3) to DT150 tweeters, GPA 802-8G's on Jabo horns, Altec 414z's, Vidar to Dayton Audio VS8 Subwoofers.
Stereomour I to Altec 299-8A w/ MRII horns.  Seductor to Mk3 Frugal horns
SR-45 amp to HD800's
Box and one (DIY amp) to Koss ESP950

Offline Deke609

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Re: New Personalized Kaiju
« Reply #9 on: May 17, 2019, 12:39:32 PM »
Sweet. The lamination pattern looks cool - imagine they sound very nice.  I really like the brass end bells - did you keep the brass look for the SII? I'd love to know where Mike gets those.
Derek
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Roon Intel NUC ->  Yggdrasil DAC -> BeePre (w/ BeeQuiet and EML 300B)  -> Kaiju (w/ DCFil and EML 300B) or Stereomour II (2A3 [EML Mesh] and 45 Conversion [EML 45B])  -> Audeze LCD4

Offline Doc B.

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Re: New Personalized Kaiju
« Reply #10 on: May 17, 2019, 01:26:17 PM »
Mike paid a crap ton many, many years ago to have them custom made.
Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline Alonzo

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Re: New Personalized Kaiju
« Reply #11 on: May 17, 2019, 02:36:04 PM »
The brass bells were painted for the Kaiju, the other pair is a basic black.
Alonzo B
BeePre, Kaiju, some Stereomours (I's and a II as 45 and 2A3) to DT150 tweeters, GPA 802-8G's on Jabo horns, Altec 414z's, Vidar to Dayton Audio VS8 Subwoofers.
Stereomour I to Altec 299-8A w/ MRII horns.  Seductor to Mk3 Frugal horns
SR-45 amp to HD800's
Box and one (DIY amp) to Koss ESP950

Offline Raymond P.

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Re: New Personalized Kaiju
« Reply #12 on: May 17, 2019, 05:53:05 PM »
What's the reason for 3 binding posts per side?
Raymond P.

Offline Alonzo

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Re: New Personalized Kaiju
« Reply #13 on: May 17, 2019, 06:39:03 PM »
Convenience, connection for 8 or 16 ohms.
Alonzo B
BeePre, Kaiju, some Stereomours (I's and a II as 45 and 2A3) to DT150 tweeters, GPA 802-8G's on Jabo horns, Altec 414z's, Vidar to Dayton Audio VS8 Subwoofers.
Stereomour I to Altec 299-8A w/ MRII horns.  Seductor to Mk3 Frugal horns
SR-45 amp to HD800's
Box and one (DIY amp) to Koss ESP950