News: Trouble logging in? Log in from the login page.
October 31, 2020, 11:36:10 AM

Author Topic: The New BeePre Pure Speculation Thread  (Read 939 times)

0 Members and 1 Guest are viewing this topic.

Offline johnsonad

  • Hero Member
  • *****
  • Posts: 1391
Re: The New BeePre Pure Speculation Thread
« Reply #30 on: October 17, 2020, 02:17:57 PM »
I’m excited to hear it and even more excited about the low part count.
Aaron Johnson

Offline Natural Sound

  • Sr. Member
  • ****
  • Posts: 899
Re: The New BeePre Pure Speculation Thread
« Reply #31 on: October 17, 2020, 04:17:34 PM »
Nice to see some of the details coming out. I'd love to hear some listening impressions from the Bottlehead team.

One of my visual observations is that there is tons of room around the input jacks! Interconnect junkies like myself now have lots of room to move around. I really like that.

Is the overall gain lowered in the new design? Often times I feel like I need to dump excessive gain somehow. Getting a few extra dB gain from a phono pre is usually desirable. Excessive gain in a pre amp often is not.

I'm also interested in cost. But I understand that detail probably isn't settled quite yet. I'll be patiently waiting for that.

It's always nice to have something to look forward to. Especially in these trying times. Thanks for your continuous improvements guys.

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 13738
Re: The New BeePre Pure Speculation Thread
« Reply #32 on: October 17, 2020, 05:38:18 PM »
Is the overall gain lowered in the new design? Often times I feel like I need to dump excessive gain somehow. Getting a few extra dB gain from a phono pre is usually desirable. Excessive gain in a pre amp often is not.
It should be slightly lower, but not noticeable.  I need to pop into the workshop to do some measurements at some point, but I would expect the overall gain to be 8dB +/-2dB.  That's about as low as most preamps get.

I'm also interested in cost. But I understand that detail probably isn't settled quite yet. I'll be patiently waiting for that.
I'm working on this.  I am expecting the basic BeePre to be close to the cost of BeePre 1.

-PB
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 13738
Re: The New BeePre Pure Speculation Thread
« Reply #33 on: October 17, 2020, 06:42:33 PM »
If you're jonesing for a BeePre with EML tubes or other slightly-off 300Bs that need a little more filament current, that can now be more easily accommodated with the new filament arrangement.  Trimming it out would be the same procedure used for the Kaiju.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Alby0521

  • Full Member
  • ***
  • Posts: 60
Re: The New BeePre Pure Speculation Thread
« Reply #34 on: October 18, 2020, 08:29:29 AM »
Hello,

All is very exiting!!!
When do you expect to release it on the market? 2 weeks, 2 months, 1 year? A ballpark idea?

Thanks.

AB

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 13738
Re: The New BeePre Pure Speculation Thread
« Reply #35 on: October 18, 2020, 09:11:11 AM »
I have another prototype I need to build to get things closer to the final product, then the one after that can be built for the manual shoot.  Tentatively that manual shoot would be in early November, and we would have pricing and ordering available shortly after that.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline jjvornov

  • Full Member
  • ***
  • Posts: 89
Re: The New BeePre Pure Speculation Thread
« Reply #36 on: October 19, 2020, 03:17:39 AM »
Now I know what my winter Bottlehead kit project will be! I was worried that after the Monamour build, I was done. This is exciting as the BeePre 1 is an amazing preamp as it is, but having the buzz and microphonic fixed is worth building a new one.


Offline RPMac

  • Full Member
  • ***
  • Posts: 214
Re: The New BeePre Pure Speculation Thread
« Reply #37 on: October 22, 2020, 10:48:05 AM »
With the new op points, will the 6A3 still be an option?

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 13738
Re: The New BeePre Pure Speculation Thread
« Reply #38 on: October 22, 2020, 11:07:28 AM »
With the new op points, will the 6A3 still be an option?

A mild modification will allow this (jumpering across a few resistors with pieces of wire).
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline RPMac

  • Full Member
  • ***
  • Posts: 214
Re: The New BeePre Pure Speculation Thread
« Reply #39 on: October 22, 2020, 12:10:57 PM »
A mild modification will allow this (jumpering across a few resistors with pieces of wire).
Can it be safely done using a switch?

Offline Paul Joppa

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 5133
Re: The New BeePre Pure Speculation Thread
« Reply #40 on: October 22, 2020, 12:24:26 PM »
How safe is safe enough?

If it's a switch, then it's easy to accidentally put 6.3vDC on a 300B filament, which is enough to damage the 300B.
Paul Joppa

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 13738
Re: The New BeePre Pure Speculation Thread
« Reply #41 on: October 22, 2020, 03:47:13 PM »
I am 100% in agreement with PJ.  I've never met someone with a piece of tube gear that had a filament voltage switch who hadn't destroyed either tubes or the amp itself.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline RPMac

  • Full Member
  • ***
  • Posts: 214
Re: The New BeePre Pure Speculation Thread
« Reply #42 on: October 22, 2020, 04:51:53 PM »
Thank you for your answers, that’s why I asked.

Offline triode

  • Full Member
  • ***
  • Posts: 52
Re: The New BeePre Pure Speculation Thread
« Reply #43 on: October 22, 2020, 06:04:43 PM »
I am 100% in agreement with PJ.  I've never met someone with a piece of tube gear that had a filament voltage switch who hadn't destroyed either tubes or the amp itself.

Oops, I just finish installing a filament switch in my Foreplay III to accomodate both 12AU7 and 6CG7

Offline pboser

  • Full Member
  • ***
  • Posts: 88
Re: The New BeePre Pure Speculation Thread
« Reply #44 on: October 23, 2020, 08:33:32 AM »
I have to admit that I have cooked some tubes on my tube tester by not checking the filament switch. 
Peter Boser