Silver Flute/Peerless, Home Audio Build

[thadman 10+ year member]

Where are you crossing your NSBs? If you treat the cones they might sound better in a more narrow passband as a result of being more pistonic, but sometimes the peak is so high up in frequency that harmonics of that peak wont affect the passband you're listening to.

How small are those NSBs? 4"s? With cone treatment the peak may well be hovering around 10khz which would put the harmonic of that peak out of your passband for the driver making you oblivious to the negative effects. The thread starter does not have this opportunity, his peak is going to show up as distortion as early as 1khz. Treating the cone will only make the peak larger, but not put it out of the passband.

 

[thylantyr 10+ year member]

Where are you crossing your NSBs?

To verify what the cone treatment did, I ran the 4" NSB midwoofers full range,

maybe a high pass to filter out some bass.

NSB unmodded vs. NSB modded blind tests. Everyone who listened, picked the

modded version as sounding better unbeknownst to them it was modded, to

them it looked like the same driver from afar.

I also did another blind test with $129 midrange vs. NSB behind grill cloth

and the people listening were told that speaker A cost $129, based on the

sound you hear from speaker B, how much is it worth. Most people said at

least $100. The mod created the illusion that the modded driver sound competed well

with the high end driver at the higher frequency range at moderate SPL levels. I

didn't need the audience to tell me, I heard it, but I wanted verification, lol.

I also did phase plug mods and did some comparisons, phase plugs improve

the sound a we-bit, but it's only worth it if you are anal and will operate the

driver with no low pass.

 

[Thieroff 10+ year member]

Well, I started building the passives today

I only got the LPF section of one done today, due to time constraints

Last night I got the enclosures all cut and glued

All cuts were mitered, and I should have pics of that a little later this evening.

Pics of passives.

CT

 

[Thieroff 10+ year member]

Pics of Cuts

 

[dinty01 10+ year member]

nice build, looking forward to some more pics & your conclusions on how it sounds, keep up the good work //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Thieroff 10+ year member]

Dinty,

Thanks man

Pics will be available as progress permits.

CT

 

[Thieroff 10+ year member]

I haven't updated here in awhile, but I've gotten a decent amount of work done.

The paint still needs finished up and everything, I got a process I'm going to do.

We'll let the pics speak.

 

[bigbangtheory 5,000+ posts]

Looks tits so far! Good luck on the rest of the build.

 

[JimJ 5,000+ posts]

I'd still be happy to give my thoughts, but yikes...my amps aren't going to like those resistors at all.

 

[pwnt by pat 10+ year member]

Why's that?

 

[JimJ 5,000+ posts]

Because my 8 watts per channel is going to go into heating those beasties up, and not powering the speakers //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[joetama 5,000+ posts]

Because my 8 watts per channel is going to go into heating those beasties up, and not powering the speakers //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Those resistors are a bit over kill...

8 W into resistor... 8 mW out... //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[ballstothewall 10+ year member]

Because my 8 watts per channel is going to go into heating those beasties up, and not powering the speakers //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

'Tis what you get for running tubes... //content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif

 

[JimJ 5,000+ posts]

'Tis what I get for running the tubes I am //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Tubes can run full size Maggies, you just need a lot of 'em //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Thieroff 10+ year member]

Those resistors are a bit over kill...
8 W into resistor... 8 mW out... //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

I did go a little crazy on the resistors.

I may have a look into it and switch to smaller resistors.

CT