F5 power amplifier

[Zen Mod]

ZM--in case you missed it.....

......

naah ..... I'm good with Papa's Koan and all other goodies Papa already gave me ;
and those are just material things for which I'm grateful .......
( sometimes isn't cheap if you don't want to adopt Mighty ZM ..... )

........

I can see the carnage now.... DIY audiophile fighting with DIY audiophile..... Arm-wrestling over faceplates. Oh...the HUMANITY....!!
......

no comment ......... except that I have impression that somewhere must be a list of recipients ...... time is for heavy woodoo , if you want to be on it

 

[Malotron]

Does the F6 run hotter that the R5 Turbo?

 

[h_a]

Nice pic, especially the of the drivers Hannes

 

[lykkedk]

F5 "old / Normal" Schm. ready for attaching F5 Turbo parts

Jesper...

 

[jacco vermeulen]

(sometimes isn't cheap if you don't want to adopt Mighty ZM)

Ohhh, you poor thing.

Did someone say rumble (Fish)

 

[Zen Mod]

who's Rusty , Wacoojaccoo
?

(better to play emotional orphan , than to be the one )

ya can eat my liver with later one , too

 

[jacco vermeulen]

poof movie, aka Broke Bank Motorcycle !

 

[Zen Mod]

it was coincidence , or what ?

 

[albertNL]

Wouldn't it be nice to add a Turbo ...

... to the ​

F5?
​

 

[Tea-Bag]

AlbertNL - What sorta strange speakers are those?

 

[Zen Mod]

Iris?

 

[Tea-Bag]

Probably ZM, as I see the B5 - which is OB X-Over. Good call.

 

[albertNL]

Probably ZM, as I see the B5 - which is OB X-Over. Good call.

Sorry, Tea-Bag, it's a B1, not B5.

Well spotted, Zen-Mod. They are Silver Iris 15". In that photo still in the boxes they came in. I have since mounted them in 24 x 36 (600 x 900) MDF baffles,
but they do not sound right to me. I hope to test some Fostex FE206En's in the same baffles in a few weeks time, but am not sure it is going to give the sound I want.

The above is setup in Australia where I currently am. I run a different system in Europe with an original Aleph 3 for mid/high on a set of old Magnepan MG3A's (all bought second hand). I have never been able to compare the F5 to the Aleph 3 as they are 20,000 km apart and I do not have a set of speaker cables that are long enough!

In Europe, I also have a set of Aleph 2 clone monoblocks a friend of mine built for me some years ago. Nice and of course more power, but the Aleph 3 is nicer. Could be parts too, as in the last 8 months or so I have been reading a lot on this site. Am considering upgrading the Aleph 2's (ZVP3310A for input and CSS, Silmic II 220uF caps and replacing the low-level wiring that I recently discovered was very cheap silver on copper on steel core coax).

I am considering replacing the Iris OB's by Magnepan MG1.7 (would like 3.7 or new 20.7 but hey, these things cost serious money! Too bad they dropped the biamp option on the .7's ). But for Magnepans the F5 is probably too small. Hence the need for a TURBO!

PS Yes, those are computer tapes under the feet of the OB's. I used them to angle the speakers to my listening position.

 

[vdi_nenna]

AlberNL,

What dimensions are the room? Is it square, rectanglar, ect?

Try moving them out about 3-4 feet from the back wall. They look like they are about 2.5 ft from the back wall now. Looks too close in my opinion.

Where are your sidewalls in respect to the center of the driver?

 

[jacco vermeulen]

do not have a set of speaker cables that are long enough

Think i saw a Tardis flash by at Ebay.

 

[merlin2069er]

Anyone build a pair of Manzanita open baffle speakers?

I'm interested in putting together a pair for my F5 amp.

 

[Zen Mod]

whazzat ?

edit

found it

http://www.diyaudio.com/forums/multi-way/110583-fast-fun-inexpensive-ob-project-23.html#post2752617

 

[labjr]

There are several options, the base being an F5 with a few parts altered
and an extra pair of outputs.

Where are we gonna get matched sets of Fairchild Outputs?

 

[Bksabath]

Got plenty of FQA12P20 and FQP19N20

The FQP are the TO220 kind but had them togheter for last4/5 months with no problem.
drop me PM if interested.

 

[labjr]

Looks like FQA19N20C has to be a higher current part then the FQA12P20 in the F5. Seems kind of scary to use a TO220 part considering how hot these parts run in the amp.

I do have some of both which I've had for while. Just not sure how many are needed to find matching pairs.