First watt choices

[stephenmarklay]

I would really like to build one but I am unsure of which one. My current speakers are have pretty well behaved impedance that stays at or above 8 ohms so they should not be too horrible.

However, it would be nice to have the option of less well behaved speakers too.

Is there and obvious choice?

 

[Zen Mod]

Room size , which speakers exactly (db/W/m being most important , but not single important parameter) , SPL habits

?

 

[drpro]

I am running a pair of F4s in mono (100w each) driving them with either a BA-3 or ImPasse preamp. Very nice sound.

 

[stephenmarklay]

Room size , which speakers exactly (db/W/m being most important , but not single important parameter) , SPL habits

?

Gotcha,

Right now I am running so DIY bookshelf Jeff Bagby Continuum. Not super efficient but 8 ohm nominal and no real dips. I don’t really listen loud. But I once had a Sugden A21 at 23w into 8ohm and it was great. Now I also had the first version of that at 15w and it was not enough.

 

[planet10]

The impedance curve may not drop below 8Ω but it is kinda ugly. No F1 or F2 for you. 45° phase angle at about 500 Hz. Remeber P=VA x cos(phase angle) = 0.707 x VA in this case.

dave

 

[optimationman]

Don't want to steal the thread, but how about Von Schweikert VR-5HSEs and a f6 clone? 91db, but a complex crossover system.

 

[Zen Mod]

M2 , Killer Bee

though , it demands proper preamp , with gain of 12 to 6db , to things came really alive

 

[cumbb]

F1, F2, F3;-)

 

[globalplayer]

F5

 

[Zen Mod]

F1, F2, F3;-)

flea power , so no go

F5

yup , adequate with power also , same note as for M2 , regarding preamp

though , my sympathies are always at M2 side

 

[Marra]

M2 , Killer Bee

though , it demands proper preamp , with gain of 12 to 6db , to things came really alive

I have to agree with Zen Mod. The M2 makes beautiful music driven by the Salas DCG3 pre.

 

[silasmellor]

F6 seems to fit the bill also.

 

[stephenmarklay]

Ok M2, F5 and f6 above. I have heard good things about the M2 before. I am checking that out.

 

[cumbb]

F1, F2, F3;-)
The most do mistake "power" (what is watt?-) and "damping" and "cleanness for the ear"-)))
And a tuning of your speakers;-)

 

[Zen Mod]

be serious

to someone , amount of money involved - can be serious

so , best to give advice pointing to foolproof solution , not to something with question mark

 

[Anchan]

F5
yup , adequate with power also , same note as for M2 , regarding preamp

though , my sympathies are always at M2 side

Why does the F5 or M2 need a preamp? You mean if low efficiency speakers, or pretty much always? Just asking because I built the juma variation F5 and now curious if I have to build another thing I've got plenty of volume with dac directly to F5. Sounds pretty great btw

 

[optimationman]

VR5 HSE owner

I will be using an Audible Illusions pre, lots of gain availible, so M2 or F5 best choices? This means only current gain necessary from power amp?

 

[PJN]

Don't want to steal the thread, but how about Von Schweikert VR-5HSEs and a f6 clone? 91db, but a complex crossover system.

I'm running some big 3 ways at ~ 86 db with my F6 no problem sounds great and plenty of juice. I use an active preamp with some gain though (Doug Self design)

 

[Zen Mod]

will not repeat what I wrote about needed pre gain .

it sounds better when upstream are some cojones , doesn't matter that Rin of amp is highish

 

[Zen Mod]

will not repeat what I wrote about needed pre gain .

it sounds better when upstream are some cojones , doesn't matter that Rin of amp is highish