Bottlehead Forum
Bottlehead Kits => S.E.X. Kit => Topic started by: Todd R on October 30, 2012, 01:54:53 PM
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Hey Doc,
Any idea when I can get this very awesome upgrade?
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Hello Todd,
The manual should be wrapped up shortly (we were delayed by needing a custom piece of hardware), hopefully Josh can chime in on how it's going.
-PB
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I plan on ordering as soon as one is available.
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Oh good!
Listening to it right now with a Calyx 24/192 DAC and my HE-500 headphones in balanced mode.
SO, SO GOOD!
Can't wait to hear it with the C4S.
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What does the C4S bring to a build?
S
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What does the C4S bring to a build?
Essentially, the C4S will present the ideal load to the driver half of the 6DN7, increasing the gain a bit, and lowering the distortion of that stage. As a side benefit, the C4S also presents a high impedance between the driver and the power supply, granting some noise reduction.
There's some decent reading on the subject here:
http://www.pmillett.com/current_source.htm (http://www.pmillett.com/current_source.htm)
Though it is good to keep in mind that our C4S circuit is purpose-built for high voltage tube apps (some have found the IXYS chips to be a bit flaky).
-PB
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Sorry, I just saw this one. So here's what's going on with manuals: I've gotta get the Bottlenects manual done first, since those kits are already arriving for people (photos and most of the writing is done). Then I need to build, shoot, write, and layout the C4S S.E.X. 2.1 manual. I have tomorrow off, so my goal is to have a functioning C4S'd S.E.X. by tomorrow afternoon and be listening to it while I write. Overall, I think the manual should be done by next weekish, barring unforeseen delays.
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If you run into any hangups, I'll be at home working too, and Doc B. has a working SEX with C4S on the workbench.
We are here for you buddy ;)
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Count me in!
-- Jim
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I've got an itchy trigger finger on that buy button too!
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hi, i am really confused here. when i ordered my sex 2.1 assembled by shawn at bottlehead a year ago i, just as a matter of course, had the c4s upgrade installed because i thought this issue was settled. this upgrade was one that everyone would want. i assumed we all knew that. now i see that the discussion about this matter is ongoing. the comments about this matter seem to be recent. why? we all know this is an upgrade that is desirable. at least i thought so. please enlighten me. don
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The manual to install the C4S has to be different because version 2.1 is different and looks different in the pictures. Since we're re-doing it anyhow, the latest C4S board will be used, which is also slightly different. The C4S in the catalog right now is for version 2.0. As often happens, we underestimated how long it would take to make a simple revised manual...
The same goes for upgrading to the version 2.1 output transformers and plate chokes, incidentally. This is not the same as buying Magnequest plate chokes and output transformers, which are still available and work for either version; we don't have a manual for either amp version but the change is much simpler in that case - fewer connections.
Since Shawn built yours, with Doc B looking over his shoulder, he din't need no stinkin' manual! You have a pre-production, semi-custom amp.
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well bein' simpleminded does this mean i am hosed up or i am i good to go? my li'l amp and it's li'l foreplay 3 sound awful good but if it could sound better i'm in that game too. yuh know what i mean? don
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Your C4S boards are there and professionally installed. You are in high cotton!
You also have a version of the amplifier no one else has at the moment.
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How we coming on this?
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Photos are finished as of about 10 minutes ago. The text for the manual is written, so it's just a matter of photo editing and a little rearranging, then we are ready to ship.
We set a deadline of this Friday for manual completion, which means shipping early next week.
-PB
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Do you have a price set yet?
-- Jim
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Yes indeed, here is the page:
http://www.bottlehead.com/store.php?crn=224&rn=448&action=show_detail (http://www.bottlehead.com/store.php?crn=224&rn=448&action=show_detail)
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Yes indeed, here is the page:
http://www.bottlehead.com/store.php?crn=224&rn=448&action=show_detail (http://www.bottlehead.com/store.php?crn=224&rn=448&action=show_detail)
That link was just to show the price, right? The page is still referring to the pre 2.1 kit.
I'm ready to place an order as soon as it's available.
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I will work up the price today.
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Has this been updated yet?
Stephen
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Sorry guys, we are in full on just before Xmas balls to the walls mode and our biggest order was rolled back a couple of days this morning. I will get to it just as soon as I can.
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OK, the kit is finally up in the store. Thanks for your patience!
http://www.bottlehead.com/store.php?crn=44&rn=462&action=show_detail (http://www.bottlehead.com/store.php?crn=44&rn=462&action=show_detail)
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fwww.bottlehead.com%2Fsc_images%2Fproducts%2F462_image.jpg&hash=9de94b1d45570503f0c0f952bd47011fa2e5fe7d)
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Awesome, just placed an order.
Thanks.
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Pics are confusing. For 45 bucks do you get two and do you need two only one? A picture is worth a 1000 words they say.... ;)
shreekant :)
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It's all on one board.
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Hi Doc! Is there a way you can send this thru USPS priority?
Thanks.
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Thanks!!
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OK, the kit is finally up in the store. Thanks for your patience!
http://www.bottlehead.com/store.php?crn=44&rn=462&action=show_detail (http://www.bottlehead.com/store.php?crn=44&rn=462&action=show_detail)
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fwww.bottlehead.com%2Fsc_images%2Fproducts%2F462_image.jpg&hash=9de94b1d45570503f0c0f952bd47011fa2e5fe7d)
Where is the board mounted? Looks like it's floating in mid air ;D
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Mounts on a stand off that is right in front of the power transformer.
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Got my board yesterday. Thanks, that was fast.
This will be my Saturday project. It looks a lot simpler than C4S board from the past, so I'm guessing the install won't take more than an hour or so.
Oh, thanks for the wire Doc. Was I supposed to use one wire each for +, - and ground, or did I need to use the center conductor for + and the outer shield for -?
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Ok. Its been a while now and nobody has posted on how it sound and what it does.
shreekant :)
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Ok. Its been a while now and nobody has posted on how it sound and what it does.
shreekant :)
I'm sorry, I could have sworn I posted about the upgrade.
Very easy install, much quicker than the past versions.
Like C4S installs on older SEX amps, it get's a little quieter and the bass punch improves. It was not as a dramatic change as it is on the older SEX amps, but I'd say that's due to the improved circuit on the 2.1 over the older version.
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Nice to see that you have got your board in December... any idea why I don't have mine?
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Nice to see that you have got your board in December... any idea why I don't have mine?
Cuz I'm their favorite? ;D
No idea, but I know CES is going on this week.
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Nice to see that you have got your board in December... any idea why I don't have mine?
We ran out of the nylon standoffs to space the board off the chassis, these arrived yesterday.
-PB