new member model 19 questions

[DaveV]

Thanks Zilch. I swear the brain farts get longer for every year I get older.
That thread was here after all. LOL

After all the experimenting I did in adding tweeters to the 19's I looked elsewhere for a lack of highs because people were saying the 19's weren't all that bad.

I reworked all the solder joints in my preamp, cleaned the tube sockets and tube pins and flooded the heck out of all the switches and pots with alcohol, contact cleaner then DeOxit.
Seems that something got corrected because I abandoned the tweeters and now the 4db of treble boost at 20KHZ is sufficient.


Dave

[voice of theatr]

QUOTING ZILCH "I believe I'd be concentrating my efforts instead upon working to make the stock crossover produce its best possible performance result while also retaining the Model 19 voice...."

I totally agree--the stock crossover sounds great with the stock drivers/cabinet/port size--I'm definately not replacing mine. There are posts on this board about replacing the stock crossover caps on the 19's since they are about 30 years old now. There's also a recent post about connecting the four crossover ground lugs to each other with good copper wire the idea being that four good solder/wire connections will ground it better than just four riveted connections. Both of these "upgrades" seem like a good start at "working to make the stock crossover produce its best possible performance result while also retaining the Model 19 voice...." If/when I decide to tinker with my Model 19's, that is probably where I'll start....

[Cosmo]

One other thing that should be explored if using stock(original xo) is that the grounding lugs should be bypassed by direct wiring the grounds with wire.After replacing the caps and resistors.Just solder wire from ground lug to ground lug bypassing the lugs they are only riveted to the alum.frame and can oxidize between them.You will get much better performance with this simple step.