Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login
QN1 and QP1 replacements - parts listed in BOM are "obsolete"
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
picovolt  
#1 Posted : Tuesday, April 2, 2013 9:20:45 PM(UTC)
picovolt

Rank: Member

Groups: Member
Joined: 4/1/2013(UTC)
Posts: 20
United States
Location: Berkeley, CA

Thanks: 3 times
Hi All,

The fjpf parts are not available anymore. I have found an fjp5200OTU that looks like it should sub fine, but then the complimentary (fjp1943) is not available—I assume I need to use complimentary pairs. What would the best parts be that are in current production?

Thanks in advance.

Angel

Edited by user Tuesday, April 2, 2013 9:26:42 PM(UTC)  | Reason: Not specified
Back to top

Wanna join the discussion?! Login to your Twisted Pear Audio Support forum accountor Register a new forum account.
Back to top  
Brian Donegan  
#2 Posted : Thursday, April 4, 2013 9:13:50 PM(UTC)
Brian Donegan

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA

Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
MJE15034/35 would be a great replacement. Be sure to isolate them from the heatsink, since they are not insulated packages.
Back to top
WWW
picovolt  
#3 Posted : Thursday, April 4, 2013 9:41:00 PM(UTC)
picovolt

Rank: Member

Groups: Member
Joined: 4/1/2013(UTC)
Posts: 20
United States
Location: Berkeley, CA

Thanks: 3 times
Thanks Brian. I'm sure I've got some mica insulators in my parts bin. Whew—can place my Mouser order now!
Back to top
picovolt  
#4 Posted : Saturday, April 6, 2013 6:52:16 AM(UTC)
picovolt

Rank: Member

Groups: Member
Joined: 4/1/2013(UTC)
Posts: 20
United States
Location: Berkeley, CA

Thanks: 3 times
The 15035 is also out of stock, but at least they're on order. I ran across NTE2666/2667 and also MJE 15032/33. They look about right to me, but I could be overlooking important parameters. Are you familiar with these?

When I compare the 32/33 with the 34/35 you recommended, the main difference may be the gain is a bit lower.

I know the spec sheet on the FJP5200 states "excellent gain linearity for low THD" which of course sounds great, but this may be a feature on all of these, or, heck, it may not even matter.

I found a thread at DIY that mentioned needing to keep the gain above 80, which the 32/33 pair do not (measured at ~70). So, I'm just back ordering the 34/35 pair. The wait will let me get the housing designed...

Edited by user Monday, April 22, 2013 10:09:28 PM(UTC)  | Reason: update to information:
Back to top
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (2)
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Youtube
Copyright © Twisted Pear Audio