Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: ideal.hat on February 10, 2017, 07:28:20 AM

Title: Can I use this choke for my Crack? [resolved]
Post by: ideal.hat on February 10, 2017, 07:28:20 AM: Hello There.

I just received few components for my Crack and one of them was a choke.
They didn't have the Triad C7-X but I tried to come close to it in specs.

30 -20H80mA

Will this work?
Title: Re: Can I use this choke for my Crack?
Post by: Paul Birkeland on February 10, 2017, 01:05:25 PM: A 20H/80mA choke should be OK in the stock circuit, but getting close to borderline with the Speedball. Why does that choke have 3 wires?
Title: Re: Can I use this choke for my Crack?
Post by: ideal.hat on February 10, 2017, 09:11:16 PM: Hello Paul.

Thank for getting back to me.

"getting close to borderline with the Speedball"
Should I then leave it and buy an C7-X?

"Why does that choke have 3 wires?"
It came like this, I believe it has a ground wire that the C7-X does not have.

Here is a full description of the choke from the webshop. I can provide a like to it if needed.

20H 80mA Choke
Fully shrouded low cost chokes with high performance suitable for power supplies for valve pre-amps, low power power amps and as anode loading chokes. Features include shielding and grounding wire for lower noise and reduced interference with 40cm flying leads.

Inductance 20H, current rating is 80mA. Power: 30 Watt

DC resistance:
275R

Overall weight:
900g

Overall size:
59mm(w) x 65mm(d) x 50mm(h).

Fixing holes:
2 holes spaced 78mm (centres)

Price 1 off:
Â£17.50+vat+p&p
Title: Re: Can I use this choke for my Crack? [resolved]
Post by: ideal.hat on February 13, 2017, 01:29:48 AM: I have ordered the Triad C7-X [10H90] so I will not install this 20H80mA choke.
Title: Re: Can I use this choke for my Crack? [resolved]
Post by: Paul Birkeland on February 14, 2017, 08:22:50 AM: Yeah, the C-7X is tried and true. That choke that you have might work OK, but people have been known to have some issues with parts from that country of origin.
Title: Re: Can I use this choke for my Crack? [resolved]
Post by: i luvmusic 2 on March 19, 2017, 01:34:36 PM: What about a choke from HAMMOND which one is the closest to CX-7.Thanks!
Title: Re: Can I use this choke for my Crack? [resolved]
Post by: Tom-s on March 19, 2017, 04:02:31 PM: Quote from: i luvmusic 2 on March 19, 2017, 01:34:36 PM
What about a choke from HAMMOND which one is the closest to CX-7.Thanks!

158M
Title: Re: Can I use this choke for my Crack? [resolved]
Post by: i luvmusic 2 on March 20, 2017, 11:37:57 AM: Quote from: Tom-s on March 19, 2017, 04:02:31 PM
158M

THANK YOU!
Title: Re: Can I use this choke for my Crack? [resolved]
Post by: i luvmusic 2 on March 26, 2017, 02:00:12 PM: I should be installing the Hammond 158M sometime next week.