Bass Horn

[pos]

i have loaded JBL D130 into my 4520 (http://www.stageaccompany.com/vintag...520s-4495s.pdf)
and bass is terrible, with my tube amplifiers, with SE or PushPull.

you should have a very good mid bass though, right?
just missing the lower bass extension?

I think this is a language barrier problem with the word "terrible":
For example in french you would use "terrible" to mean tremendous or fantastic. Quite different from the english meaning
I don't know where Olden is from but I guess the meaning is the same in his country, as he seems satisfied with the bass he gets.

Buy the way Oldgen, where did all your UREI monitors go?

[hjames]

I think this is a language barrier problem with the word "terrible":
For example in french you would use "terrible" to mean tremendous or fantastic. Quite different from the english meaning
I don't know where Olden is from but I guess the meaning is the same in his country, as he seems satisfied with the bass he gets.

Buy the way Oldgen, where did all your UREI monitors go?

So - he actually means "terrific" (GOOD) not "terrible" (BAD)

No flames meant - just wading in the waters of language issues ...

[OLDGEN]

sorry for my mistake.

[jcrobso]

i have loaded JBL D130 into my 4520 (http://www.stageaccompany.com/vintag...520s-4495s.pdf)
and bass is terrible, with my tube amplifiers, with SE or PushPull.

D140F or other JBL bass drivers would work better. John

[OLDGEN]

I have JBL 4xD140 and 4xD130B too, I am plaining to try them.

[louped garouv]

I think this is a language barrier problem with the word "terrible":
For example in french you would use "terrible" to mean tremendous or fantastic. Quite different from the english meaning

sorry for my mistake.

ah. makes perfect sense now...

[m8o]

Not that this thread really needs this (a lot of very well informed folks here), but some really good info & pertinent "rules of thumb" & formulas under here
http://www.diyaudio.com/wiki/index.p...=Bass+Horn+FAQ
especially the FAQ.

[Dr.db]

Thanks all of yous!!

Nice to read this.... Currently Im too busy to start buidling.. and still Im not shure wich one it will be



Regards,
Olaf

[paragon]

Measured with HiFish AC at 2.5 m distance where i hear.
4530 with 2205A Bass, 2441 with 2397, 2402 and 2405.

[OLDGEN]

D140F or other JBL bass drivers would work better. John

you have right!
I have four JBL D130B (old from the years 50') they were not good in the 4520, and after I have changed for my 4xE-140, and the bass is amazing
I have 4xD140, but they need some reapir, and after I'll try.

[paragon]

Ich hätte die "Rutsche" weiter nach oben gezogen damit man die Verstärkungsleisten nicht mehr sieht.
Außerdem hätte ich die E140 mehr vermittelt, damit sie optisch schön symetrisch sind. Und die Kugelecken müssen weg. Ansonsten hätte ich die auch gern bei mir zuhause !Super !
Vieleicht kann das jemand übersetzen ?

[OLDGEN]

Ich hätte die "Rutsche" weiter nach oben gezogen damit man die Verstärkungsleisten nicht mehr sieht.
Außerdem hätte ich die E140 mehr vermittelt, damit sie optisch schön symetrisch sind. Und die Kugelecken müssen weg. Ansonsten hätte ich die auch gern bei mir zuhause !Super !
Vieleicht kann das jemand übersetzen ?

I would have " Rutsche" far upward pulled thereby one the reinforcement borders any longer does not see. In addition I would more have obtained the E140, so that they are optically beautifully symetrisch. And the ball corners must away. Otherwise I would have also gladly with me at home! Super! Perhaps can that translate someone?

the corners are very usefull when I change the speakers, minimum 5x in a week my backside is not happy with this moving-turning job
if you have any idea to try some woofer, I am interesting

[paragon]

Good translation. Rutsche is shute or shoot or skid...
In my 4530 i used a Becker 915 A 16, JBL 2205A and JBL K145.
There is no difference i can hear in bass response use the 2205 or K145.
But there was a great difference between the Becker and the JBL, because the Becker had a high Qts. So, there was more upper Bass with the (very cheap) Becker driver.

[OLDGEN]

D140F or other JBL bass drivers would work better. John

YOU HAVE RIGHT!!
The K 140 is better choice
here is my other SCOOP, installed with 4 X JBL K 140, I like these new toys:-) I ma using with my MINI SE 2x2 watts Tube amplifier
http://tubeguru.hu/audio_tube_amplif...I_Project.html

[Lee in Montreal]

What are the main differences between the K140, and the 2205 and 2225 for which the 4520 were designed? I run my 4530s with 2225s. If I had the room, I would use a pair of 4520s with 2225s.