TL Nelson Pass

[MartinV56]

I built the Nelson Pass TL, with the Pioneer B20FU20-51FW following this plan: file:///home/martin/Downloads/Pass-BOFU-TL-map-300408.pdf

Great bass, I recently added some ESS AMT tweeters cut with a 2Mf capacitor. I will try to cut lower the ess around 2500-3500 hz, I appreciate your suggestions, thanks

I'm using them with Monarchy SM-70 amplifier.
an old thread about TL PASS

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Thread 'Pass TL'

2018-09-12 10:10 pm

This is my version of the "Pass TL" that I built from a drawing that I saw somewhere on the Intrawebs. I am using a Pioneer BU20F20-51F (8" fullrange) and Dayton Audio ND20FA-6 (6 ohm tweeter) The Pioneer has a zobel and a baffle step compensation circuit, but no crossover. The Dayton tweeter has a 12db/oct L-R crossover at 7600 hz. The bass is surprisingly good, deep and articulate, considering it is a single 8" driver. I have built several different speakers with the Pioneer driver. Bought a bunch of them before they were discontinued. This is the best yet. These speaks are imaging...

• Decker
• Replies: 17
• Forum: Pass Labs

 

[norman bates]

Trim 1/4 of the whizzer off..................
Sounded less "honky" to me.

And some cotton balls separated out between cone and whizzer, known as the 98 cent tweak
"That's the famous "98 cent tweak"; just take a piece of Acoustistuff or polyfill and make a somewhat elongated cotton ball of it. Then gently wrap it around the outside of the whizzer."
https://db.audioasylum.com/mhtml/m....hlight=damar+98&r=&search_url=/cgi/search.mpl

Seeing the measurably higher qts than manufacturer's, I wonder if this box can work for the w8 2145 ?

 

[LeifB60]

"some cotton balls separated out between cone and whizzer"

Worked fine with Fostex FE207