Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Swap Meet Sell your stuff here, who knows, some other fanatic might be interested!

Transistors and Resistors for F5 Amp Build
Transistors and Resistors for F5 Amp Build
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 20th December 2010, 05:29 AM   #1
NYCOne is offline NYCOne  United States
diyAudio Member
Join Date: Jul 2010
Default Transistors and Resistors for F5 Amp Build

I'm embarking on a new direction and building variations of the F5. As such, I have one extra set of materials for an F5 build. Add heat sinks, PCBs, and a case, and you have an F5.

Please note, I found the gain of the stock F5 a little low. I substituted Panasonic 3W 150 Ohm resistors for the schematic's Panasonic 3W 100 Ohm resistors. This is a change known to give higher gain with little downside. If you want the stock amp, I'm including two extra 150 Ohm resistors which if installed in parallel would bring the amp back to it's stock numbers.

Also, I substituted 22K resistors for 10K resistors in the current limiting circuit (R21 R22). This is a common change, but if you prefer 10K let me know.

I'm selling two complete channels for the F5. I am not selling any PCB for the amp. You'll need to buy those from the DIYAudio store.

Two Channels for the F5 Amp:

Two Blue LEDs
Two Q1 N-Type JFET Matched Toshiba 2SK170BL
Two Q2 P-Type JFET Matched Toshiba 2SJ74BL
Two Q6 NPN BJT BC546
Two Q5 PNP BJT BC556
Two N-type MOSFET IRFP240
Two P-type MOSFET IRFP9240
Four Power Resistor 0.47 3W Panasonic P0.47W-3BK-ND
Four R1 R2 Resistor 10 Ohm 1W Vishay Dale PR01000101009JR500
Six R5 R6 R7 R8 Power Resistor 150 3W Panasonic P150W-3TR-ND (Note Schematic calls for 100 Ohm resistors in parallel. I found the gain too low. Im including Six 150 Ohm 3W Panasonic resistors. With these, you can increase the gain vs. the stock configuration by using four, or keep to the stock gain by using all six resistors.
Two R10 Resistor 100k Vishay Dale RN60D1003FB14
Four R19 R20 Resistor 150 Vishay Dale RN60D1500FB14
Six R9 R17 R18 Resistor 1k Vishay Dale RN60D1001FB14
Eight R3 R4 R15 R16 Resistor 2.2K Vishay Dale RN60D2201FB14
Four R21 R22 Resistor 22K Vishay Dale CCF6022K1FKR36
Two R35 Resistor 33K Vishay Dale RN60D3302FB14
Four Resistor 47 Vishay Dale RN60D47R0FRE6
Four NTC Thermistor 4.7k EPCOS B57891M472J
Four P1 P2 Variable Resistor 5k PV36W502C01B00

The price is a little lower than Tech DIY, and I have 1/2W resistors in my set, they use 1/4W.
$72 Free Shipping in the Continental United States. If you want this by Xmas, let me know and I'll do my best.
  Reply With Quote


Transistors and Resistors for F5 Amp BuildHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Next suggested build after F5 anilva Pass Labs 36 3rd December 2010 05:11 AM
F5 Build Instructions 1108 Pass Labs 4 12th May 2009 11:58 PM
Planning an F5 build - some beginner questions njepitt Pass Labs 144 16th March 2009 12:55 AM
Conrad MF35-151.5 Heatsink pair for F5 build specialidiot Swap Meet 1 17th February 2009 03:18 AM
Soldering temperatures (resistors, caps, transistors) swede Parts 7 9th February 2002 02:04 PM

New To Site? Need Help?

All times are GMT. The time now is 03:37 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio