Finished F5

maartentje · 6th March 2011, 01:35 AM

Hi there,

First of all thank you Nelson Pass.
2x Mono F5, 300v Antek toroid, 4x10.000uf, Tech-diy components, Peter Daniel PCB, Heatsink from HeatsinkUSA.

About 10hrs listening to the amplifiers. I am play with Scan-Speak Revelator speakers 2-way 89db and a B1 preamp with 2n3819 (30volt). My previous amp was a TA2024 and listening to the F5 gives clearly a improvement. The only thing i don't get around yet, is that its sounds a little leaner then the TA2024. Not sure if that's the way it should sound or the TA2024 just sounds to rich.

See pics below.

6L6 · 6th March 2011, 01:50 AM

Wonderful!!

Our most sincere congratulations on a successful project!

Can you post some photos of the inside?

CanAm Man · 6th March 2011, 01:57 AM

Great job...... really looks nice!

I think the last time I saw heatsinks like that, they were on a Cray II tera-FLOP mainframe!

a.wayne · 6th March 2011, 03:04 AM

Quote:

Originally Posted by maartentje

Hi there,

First of all thank you Nelson Pass.
2x Mono F5, 300v Antek toroid, 4x10.000uf, Tech-diy components, Peter Daniel PCB, Heatsink from HeatsinkUSA.

About 10hrs listening to the amplifiers. I am play with Scan-Speak Revelator speakers 2-way 89db and a B1 preamp with 2n3819 (30volt). My previous amp was a TA2024 and listening to the F5 gives clearly a improvement. The only thing i don't get around yet, is that its sounds a little leaner then the TA2024. Not sure if that's the way it should sound or the TA2024 just sounds to rich.

See pics below.

Most comments seem to suggest the F5 is lean in the bass regions, this of course will enhance the mid/high when listening ...

qusp · 6th March 2011, 03:30 AM

nice build, love the heatsinks, but i tell you what, thats some of the nicest looking wood cabinets ive seen, very very nice indeed!!

one thing i feel needs saying, there are so many f5 threads popping up to show off the build, is there not another venue for this?

Melon Head · 6th March 2011, 04:29 AM

Nice scanspeak drivers.
What cd player do you use?

qusp · 6th March 2011, 05:48 AM

yeah that slitcone is beautiful. if i hadnt bought my 21w/8554k i would be buying the set that are in the fs area at the moment

osscar · 6th March 2011, 06:36 AM

Great!

EUVL · 6th March 2011, 07:07 AM

Looks like the 8.5" version, 11" long :

8.460" Wide x 11" Long Heatsink - HeatsinkUSA, LLC Store

Simulation with 1 FET per heatsink (for F5 SE monoblock), 32W per FET, 25°C ambient temperature.

Good solution for F5 SE.

Patrick

EUVL · 6th March 2011, 07:14 AM

For balanced F5, or one heat sink for 2 FETs (32W each), going to the 10" version, 12" long will also do.

10.000" - HeatsinkUSA, LLC Store

(Some here would say too hot. Not if you use Keratherm, IMHO.)

Patrick

6th March 2011, 01:50 AM	#2
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	Wonderful!! Our most sincere congratulations on a successful project! Can you post some photos of the inside? __________________ Pass Labs Pearl Phono -- Pass B1 Preamp -- Pass F5 amplifier -- Pass Labs Pearl 2

6th March 2011, 04:29 AM	#6
Melon Head Formerly Thanh1973 Join Date: Nov 2006	Nice scanspeak drivers. What cd player do you use? __________________ "No, this sucker's electrical, but I need a nuclear reaction to generate the 1.21 gigawatts of electricity I need."

6th March 2011, 06:36 AM	#8
osscar diyAudio Member Join Date: May 2009 Location: Riga, LV	Great! __________________ Leach amp LM 3875 F5 LM1875 Le Monstre Leach amp2 OPA549 OBH8SE

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6th March 2011, 01:57 AM	#3
CanAm Man diyAudio Member Join Date: Sep 2006 Location: Colorado Springs, CO	Great job...... really looks nice! I think the last time I saw heatsinks like that, they were on a Cray II tera-FLOP mainframe!

6th March 2011, 03:30 AM	#5
qusp Sometimes a square peg fits a round hole just fine diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	nice build, love the heatsinks, but i tell you what, thats some of the nicest looking wood cabinets ive seen, very very nice indeed!! one thing i feel needs saying, there are so many f5 threads popping up to show off the build, is there not another venue for this?

6th March 2011, 05:48 AM	#7
qusp Sometimes a square peg fits a round hole just fine diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	yeah that slitcone is beautiful. if i hadnt bought my 21w/8554k i would be buying the set that are in the fs area at the moment

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