Want to build bass cabinet for Fender BXR 300

[timzog]

Hi,
I have really enjoyed reading your forum and just joined! I recently had an electronics buddy resurrect my Fender BXR 300 Head that I nuked 6 years ago, presumably with a static shock. I am very excited about this and now want to build a bass cabinet to match. I am an experienced woodworker with lots of wood and tools, but no electronics or accoustics knowledge. I am looking for advice on a driver or driver system and cabinet design that is appropriate for my amp. It puts out 300W with 4Ohm minimum impedance. I only have ~$200 bucks to spend on the driver and electronics. I am not as interested in making it super loud as I am in making it sound super crisp with a serious low end presence. I used to play mostly Jazz, but now am playing more rock. I usually play my 1970's Fender Precision fretless. My goal is to build a beautiful cabinet that sounds beautiful so if anybody has any plans for something like this, I would greatly appreciate your help. I have seen the link http://www.geocities.com/SunsetStrip...1/speaker.html but wondered if there is anything else out there that could help me. In summary, what driver(s) would be a good match for my amp at less than $200 and what would be the best cabinet design.
Thanks,
Tim

[Centauri]

That link has some good info and is a good starting point for you. However, it does use an obsolete speaker model. I did a quick sim of the Eminence Beta 15 LF speaker (available in 4ohm version) in this box, and it should work well with the only modification being to reduce the port length to 6cm for a tuning of 39Hz.

The cabinet dimensions can be varied a bit one way or the other as long as the internal volume remains the same.

Go cut some wood !!

Cheers

[hunter audio]

hi

you could try audio asylum forums too - its dedicated to pro audio and sound reinforment guys

suranjan

transducer design engineer

[BAM]

How about a backloaded folded horn with a 15" coaxial driver? One of those should be pretty sweet. (Eminence Beta-15CX)

[timzog]

Thanks for the recommendations. Forgive my ignorance, but I don't understand what the difference would be with using the Eminence Beta-15CX or the Eminence Beta 15 LF.
Thanks,
Tim

[Centauri]

The CX version has a HF horn mounted in the centre and a HF driver screws onto the back of the 15 - useful for moniters etc, but not really appropriate for bass guitar.

Cheers

[phase_accurate]

but not really appropriate for bass guitar.

Bass-guitar-speakers with tweeters are sometimes worth considering, depending on what sound you want to achieve and what amp and instrument (also mods done on it !!!) you use. But this might easily cost more than your planned $ 200.

Regards

Charles

[timzog]

I looked on line for some of these speakers. I could not find an example of the Eminence Beta 15 LF. I did find the EMINENCE KAPPA-15C 15" DRIVER 4 OHM and the DELTA 15LF. These were both 4 ohm speakers, but the delta looked like it was only available at 4 ohms in the UK. I live in the US. Is the Kappa-15C similar to the Beta 15 LF?
Thanks,
Tim

[sreten]

The best set up for this sort of thing is two 8 ohm cabinets.

One cabinet can be used on its own for practise / smaller venues.

Whilst I wouldn't argue against a 15" loaded cabinet for general purpose
bass a fretless needs all the help it can get for attack and definition IMO.

If you go for a single 15" consider adding this :

http://www.partsexpress.com/pe/showd...number=272-106

It will allow you to go for a serious bass unit.
Ignore the power handling as you'll be padding it back somewhat.

Two cabinets the classic combo is a 4x10 + 1x15.

On paper this looks very good for the 4x10 :

http://www.partsexpress.com/pe/showd...number=290-380

Shown is alignments for 4 drivers.

If interested I'll post further details.

I've allowed for D tuning of the E string.

sreten.

[Centauri]

Originally posted by timzog
I could not find an example of the Eminence Beta 15 LF. I did find the EMINENCE DELTA 15LF.

Sorry, meant the Delta 15LF in my original post


Cheers