Tang Band W4-1879 4" or FaitalPRO FD371 Bullet Super Tweeter

[3StringsAndMe]

Hi
I am looking to install a High Frequency driver in to an Electric Bass guitar cabinet.
Note that I only have a very small space on the baffle next to the woofer to use for the HF Driver.
Ive got a couple of ideas for the HF driver:

Tang Band W4-1879 4" Full Range Driver
OR
FaitalPRO FD371 Bullet Super Tweeter 8 Ohm

Questions:
Is the Tang Band W4-1879 4" Full Range Driver a sealed back?
Will this cover the mid and upper frequency spectrum by itself, without a midrange driver or horn? (The woofer is an 18 inch ceramic SWR cab).

Are there any known issues using the Tang Band with a suitable crossover?

Will the FaitalPRO FD371 Bullet Super Tweeter 8 Ohm cover enough frequency range to work as a 2 way system. (The woofer is an 18 inch ceramic SWR cab).

Are there any known issues using the Fatial PRO FD371 with a suitable crossover?
Are you able to buy a suitable crossover for one of these HF drivers ready made, i.e. Parts-Express etc.

Thanks in advance

 

[freddi]

both seem awfully expensive - the little fullrange would need a small back chamber to raise its Qt to around 1 - it would not be loud. A $19 Faital pro 4" in 4 ohm (if your amp is solid state) maybe a better choice but either might not be rugged nor loud enough unless its low level jazz or studio work.

LesSon piezo tweeters, which seemed popular in some bass guitar cabinets, had a built in stepup transformer so were around 10dB more sensitive than the CTS and Motorola piezo tweeters without a transformer.

Eminence makes an inexpensive tweeter for bass rigs which is tailored for bass

Eminence BGH25-8 1" Bass Guitar Horn Tweeter 25W

ask at Bill Fitzmaurice's pages, TalkBass - give specifics on your 18" speaker, cabinet and amp.


Greenboy crossover page - maybe you would be better off using a 6" midrange to augment your 18? - I come from the time where a 60-400Hz w-bin passband would suffice with fret eating roundwounds


fEARful passive crossovers by greenboy

some spectrum from bass guitar and electric upright (longer scale)
https://www.talkbass.com/threads/bass-frequency-waterfall-plots-what-they-mean-to-rigs.510749/

Bullet tweeters typically are pretty delicate and their small horn dimensions necessitate steep slope crossovers at 5KHz or above

PRV tw350ti bullet tweeter - $25 - might be too flimsy - replacement coils are only $6.19

http://www.parts-express.com/pedocs/specs/294-2816--prv-audio-tw350ti-specifications.pdf

PRV TW700ti bullet tweeter $45 - much louder

http://www.parts-express.com/pedocs/specs/294-2809--prv-audio-tw700ti-specifications.pdf

a short horn or waveguide with something like PRV D280ti or Selenium 220 compression driver could make a pretty rugged tweeter for `3KHz crossover duty.

Lightbulb limiters made of 211 incandescent automotive bulbs could be useful - Eminence uses two in parallel in their 1K6 and 3K5 crossover hi-pass sections

PRV Audio D280Ti-S 1" Titanium Horn Driver 8 Ohm 1-3/8"-18 TPI