how not to build your bee pre

xcortes · 13435

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Offline STURMJ

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Reply #15 on: March 08, 2013, 08:08:46 AM
So the big question is....Now that you have done it, was working with the coax worth it? ( I have some, and have a Prebee coming) I have some silver wire, that I would normally use to wire inputs (shielded), But I would consider the coax.


Offline xcortes

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Reply #16 on: March 08, 2013, 09:48:54 AM
Quote
was working with the coax worth it?

We'll never know, I gues. I'm sure the Pre would sound fine with either cable. What I do know is that replacing CAT5 interconnects with 85259 ones was a move in the right direction. The CAT5 ones didn't sound bad, I lived with them for many years. And the change wasn't huge. The effect was positive but small. In the BeePre case the lengths are so short that the effect is probably even less. It took me maybe a couple of extra hours to wire the inputs. Hopefully this weekend I'll do the outputs. Worth it? Hard to measure.

Xavier Cortes

Offline Grainger49

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Reply #17 on: March 08, 2013, 11:09:09 AM
Xavier, 

I haven't been on line much because I'm contracting for K-C in Loudon TN. 

The Belden 89259 is a newer version of 9259 I have been using for 20 years.  Great stuff but a booger to work with.  It is the best RG-59 I have ever found.  I have a number of cables made from it.  Low capacitance, stranded center conductor, easy to bend (compared with a solid conductor).  Not to mention it really sounds good, great soundstage.

I see that you are taking your time and doing it your way. 

Congratulations!


Offline Maxwell_E

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Reply #18 on: March 08, 2013, 12:23:48 PM
That coax looks intriguing. It seems like a nice thing to have around for interconnects and projects like this. I found it on Markertek and Mouser and the smallest I'm finding is a 500 foot box. Is there anywhere that would have it in smaller packages or even by the foot?

Max Tomlinson
SEX amp, Tode guitar amp

Offline Jim R.

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Reply #19 on: March 08, 2013, 12:31:35 PM
Maxwell,

Right in your own backyard:

http://www.rawcable.com

A division of bluejeanscables.com, and much cheaper than Mouser, etc.  and yes, you can buy by the foot.

-- Jim

Jim Rebman -- recovering audiophile

Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).

s.e.x. 2.1 under construction.  Want list: Stereomour II

All ICs homemade (speaker and power next)

Offline xcortes

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Reply #20 on: March 10, 2013, 10:32:16 AM
The 157M chokes fit perfectly!

Xavier Cortes

Offline Maxwell_E

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Reply #21 on: March 10, 2013, 01:32:03 PM
Thanks Jim. I should have thought to just call Blue Jean's and ask nicely.

Max Tomlinson
SEX amp, Tode guitar amp

Offline johnsonad

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Reply #22 on: March 10, 2013, 03:27:20 PM
Quote from: xcortes on March 10, 2013, 10:32:16 AM
The 157M chokes fit perfectly!

Interesting! After the noise in my Eros with the choke under the hood I'm apprehensive of putting them that close to signal wire under chassis. Please keep us posted if you end up with noise.  This is the one mod I'm going to hold off on.

Aaron Johnson

Offline caffeinator

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Reply #23 on: March 11, 2013, 06:02:31 AM
Hi Xavier,

Will you have to do anything to the base to accommodate the 157M's under the chassis plate?  From the photo, I can't tell if the chokes go that far outboard.

thanks!


Offline xcortes

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Reply #24 on: March 17, 2013, 07:13:21 PM
Hammond chokes in place. They fit and there's no need to modify the base.

BeeQuiet switches also in place.
« Last Edit: March 18, 2013, 07:57:35 AM by xcortes »

Xavier Cortes

Offline caffeinator

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Reply #25 on: March 18, 2013, 09:12:29 AM
Hi Xavier,

Awesome - thanks for the follow-up and the picture!

Best,

david


Offline xcortes

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Reply #26 on: March 30, 2013, 05:35:59 AM
One output channel wiring. A single 89259 feeds all four outputs. No piggibacking here!

Xavier Cortes

Offline Grainger49

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Reply #27 on: March 30, 2013, 05:45:11 AM
I have to ask, since it is dual mono, has anyone been tempted to put in two IEC connectors so you can use 2 Botthlehead power cords?


Offline Paul Birkeland

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Reply #28 on: March 30, 2013, 06:33:40 AM
Quote from: xcortes on March 30, 2013, 05:35:59 AM
One output channel wiring. A single 89259 feeds all four outputs. No piggibacking here!

I think it might sound better with four runs per channel, you should give it a shot!

(Just joking)

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline xcortes

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Reply #29 on: March 30, 2013, 06:42:27 AM
Grainger, not me. I haven't even tried the bh power cords yet.

Paul, look at this other pic showing the output wiring of both channels.

Done with the PITA input and output wiring. Next is the beeQuiet and then the actual preamp power and signal circuits. I'm getting there!

Xavier Cortes

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