Crack;Bottlehead OTL
Feb 13, 2023 at 7:50 PM Post #11,882 of 12,335
RCA para BHC de TT2. Entrada óptica para LGX da TV.

I'm wanting to modify my Crack to natively use two 6j5 pipes just like you. Which sockets should I buy?
 
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Feb 13, 2023 at 7:55 PM Post #11,883 of 12,335
I'm wanting to modify my Crack to natively use two 6j5 pipes just like you. Which sockets should I buy?
Can’t help you — I purchased from @carlman14 — he did the mod.
 
Feb 13, 2023 at 10:24 PM Post #11,884 of 12,335
I measured the output impedance on my BHC with Chatham 6as7g and Sylvania 6c5 inputs last week and got 182 ohms which is pretty close to the 188 I have seen thrown around on the internet.
How do you test this? Asking for a friend... :D
 
Feb 13, 2023 at 10:30 PM Post #11,885 of 12,335
I measured the output impedance on my BHC with Chatham 6as7g and Sylvania 6c5 inputs last week and got 182 ohms which is pretty close to the 188 I have seen thrown around on the internet. There is a reason they don’t really recommend driving low impedance headphones with the BHC. With a 15 ohm load the sine wave started clipping at a pretty low level, a little less than 1 volt peak to peak and around a third of a volt rms.
Is there a specific kHz, or kHz range, that you used in measuring output impedance? 🤔
 
Feb 14, 2023 at 8:02 AM Post #11,886 of 12,335
Can’t help you — I purchased from @carlman14 — he did the mod.

I sent him a private message. But anyway, does anyone here know which socket I should buy to use 6j5 natively? Is the octal socket that is used for 6sn7 suitable for this? Thanks!
 
Feb 14, 2023 at 2:14 PM Post #11,887 of 12,335
Feb 15, 2023 at 8:31 AM Post #11,888 of 12,335
Feb 22, 2023 at 7:30 PM Post #11,889 of 12,335
I bought 2 JFX capacitors of 100uf 250V for my Crack.

Could someone help me by letting me know how I can fix them inside the Crack and which piece should I buy for that?

Thanks!
 
Feb 23, 2023 at 9:02 AM Post #11,890 of 12,335
I bought 2 JFX capacitors of 100uf 250V for my Crack.

Could someone help me by letting me know how I can fix them inside the Crack and which piece should I buy for that?

Thanks!

Probably the most inexpensive option is to cable tie them. There are self adhesive pads that the cable ties pass through but instead of using the self adhesive pad remove it scrape it off and then glue the pad directly to the underside of the top plate two per capacitor if you can fit two bases which you should be able to as shown in the pic below


11018620_thumb.jpg

https://www.ebay.co.uk/itm/20377367...1Wb1HjbEXwHZJI5XMrzm0nM1wl8v|tkp:BFBMmJKw6c9h
 
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Feb 24, 2023 at 7:49 AM Post #11,891 of 12,335
Probably the most inexpensive option is to cable tie them. There are self adhesive pads that the cable ties pass through but instead of using the self adhesive pad remove it scrape it off and then glue the pad directly to the underside of the top plate two per capacitor if you can fit two bases which you should be able to as shown in the pic below


11018620_thumb.jpg

https://www.ebay.co.uk/itm/203773678057?hash=item2f71db91e9:g:WG8AAOSwiBlhzHbr&amdata=enc:AQAHAAAA4PCLxAjFI4+LzWplnDde934ntgdIW42G6wDszdUr0xpZmWtvbakDXmOUGVcILy85Pnt7O338cnfEMWxKYh9SSWpCY2/t2sw7WDqMrQbmSnKAMhtbHoZpft+vLh1hWE+iTVgdzN0MSJ+aQ+v7ZW/fRnLRVgRKf2Hq9cDrzg0knlglJP3U4QSnQ+Pz+l05rGZNorhVZu5elGWBYznRvBw0cFC27tU+4vKII4xu4ewS2dFFQk4OWIXKDtFOIkf3AOMfNOS8qXzjLZzcVKYf1Wb1HjbEXwHZJI5XMrzm0nM1wl8v|tkp:BFBMmJKw6c9h

I understood. Thanks!
 
Feb 26, 2023 at 9:34 AM Post #11,892 of 12,335
Good morning guys!

Does anyone know where I can buy a PSU Choke for my Crack at a fair price?
 
Feb 26, 2023 at 9:39 AM Post #11,893 of 12,335
Good morning guys!

Does anyone know where I can buy a PSU Choke for my Crack at a fair price?
I have a Kemet choke, what exactly do you need?
 
Feb 26, 2023 at 9:45 AM Post #11,894 of 12,335
Something like this

1677422752528.png
 
Feb 26, 2023 at 9:47 AM Post #11,895 of 12,335
I’m sorry, I don’t have anything like that.
 

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