Outlaw Audio home shop products hideout news support about
Topic Options
#96586 - 05/15/17 06:17 AM Output transistor type
Stephen B Offline
Gunslinger

Registered: 01/15/15
Posts: 188
Loc: East Texas
Can someone tell me what type output transistors the Model 5000 employs?

I am looking for an amp to pair with my Adcom GFA-585LE to be used for biamping my center channel and surround duties. My goal is to match the Adcom as closely as possible. Thanks

Top
#96588 - 05/15/17 08:49 AM Re: Output transistor type [Re: Stephen B]
Stephen B Offline
Gunslinger

Registered: 01/15/15
Posts: 188
Loc: East Texas
I found the answer.

Two pairs of 150-watt Toshiba bi-polar output transistors per channel for fail-safe reliability.

Done in pairs this would be a Darlington configuration, correct?

Top
#96593 - 05/16/17 12:25 PM Re: Output transistor type [Re: Stephen B]
EEman Offline
Desperado

Registered: 11/11/09
Posts: 425
Loc: Canton, MI
I'd have to see the schematic to be sure but I'm guessing it's not a Darlington pair. I can't see in the spec but I'm guessing it's a class AB or similar with the transistor pairs (PNP and NPN) in parallel for the failsafeing.

That being said, it would also be possible to build a class A amplifier with two Darlington pairs, using four transistors. Of course then the transistors would have to be biased active which means you could cook on the amp whenever it's powered.
_________________________
975/7075/SMS-1
Aperion Verus Grand Towers & Bookshelves, Verus Forte Center, Infinity Surrounds, Ultra-X12
Oppo BDP-103, XBOX360, Xbox One
Samsung 51" Plasma
RR2150 w/Klipsch SCR-2

Top
#96595 - 05/16/17 05:53 PM Re: Output transistor type [Re: Stephen B]
Stephen B Offline
Gunslinger

Registered: 01/15/15
Posts: 188
Loc: East Texas
Thank you for the explanation.

Top

Who's Online
0 registered (), 41 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
Fred N, Coolguy, Thoma226, nurmdog, Jmilton
8155 Registered Users
Top Posters (30 Days)
J.H. 8
Owl's_Warder 7
Helson 7
steve1173 6
XenonMan 4
Forum Stats
8,155 Registered Members
76 Forums
10,956 Topics
96,080 Posts

Most users ever online: 252 @ 10/08/16 06:08 PM