All user reviews for the JBL 4818

Subject: Audiofanzine - Notice Wbin 46cm cre JBL reference number (and copy from anywhere) ERROR, ERROR 1000 times!

What a shame to go up in lgendaires JBL 4818 (the reference number) of the FCR brand HP. RCF factory HP good, much better than other brands like PHL or BEYMA.
But in the case Introduced, this speaker JBL t tudie to receive original JBL E155 (1980)
Today to exploit the maximum of its design, if there is no HP (the crafty resold their price OR JBL E 155 as E 155 manufactures are more and to find it's not easy) the ideal is to mount a 18 "JBL 2242H of reference. This is simply the must have HP 460 mm.

The other note, the fact to break up the speakers to transport kits considerably lowers the price except mounting wheels or sheets of mounting speakon Neutrick (no Asian copy)

Of course, to feed these dream pregnant, we strongly advise CROWN amplifiers (same group as JBL) QSC or LAB GRUPPEN.

Sincerely
Eric Morata
JBL specialist collector

JBL 4818 and qq prcisions:
This legendary bass subwoofer equipped behind the legendary JBL E155 Relve a study and design 100% JBL the late 70's.
This is actually Mr. DON KEELE Ingnieur consultant with JBL in these times (he also worked for Electro Voice) with his team that developed.
This box is an evolution of the basic concept created in 1954 to 1955 under the reference number C435 and C450 respectively in 4530 became 4520 and 1976 to 1977.
Regarding the company Stage Accompany this assembler actually manufactured under license JBL and Harman agreement of 4818 cases that were definitely the best "copies" that are still in service.
Following the establishment of the factory JBL / HARMAN Denmark SA broke all relations with JBL ...
It is obvious that the best banks were the original JBL 4818 factories in California.
I possdais 2 pairs of which I regret to spar renewed.Moreover our sound system, in recent n'tant more factories.
For over 20 years they "turned" with the 18 'JBL E155 food respectively by ALTEC LANSING 9440 (excellent and very powerful) a Amcron DC300 then a QSC PLX3002.
El sound n'tait happiness.

These are incredible speakers that come out a monstrous power stroke using a crossover cut to 200 or 250 Hz mine are equipped with RCF L18S800 and edited with a brief RMx4050HD QSC amps monsters 800W parts to which it does not last long these HOLDS boxes have a very long range because the inverted flag sysem provides this feature. I highly recommend it although the weight and size are not his main asset (+-85kg, height 1.20m X 60 X 65) are for me the most subwoofers performance (in return) with its most powerful if they are fitted with good presenters!
Attention the price is not for nothing because the original boxes are very rare!

I'm not so ok with you eric you saw your signature aprcie jbl lot and I understand you "preached in your parish." It is true that the orrigine c'tait a woofer jbl jbl in boxes which recess is logical but if you compare the specifications of JBL K151, E155, 2240 or even 2242 (which could be mounted of origin in 4818) with that of the FCR L18S800 home CHARACTERISTICS are similar to telephone marketing as well say, the biggest diffrence is with the power which is almost double that of jbl woofer that is why j I chose this MODEL stronger than jbl (cash and seen the power that I shoot with amps dja very big.
cordially
sylvain

Trs good subwoofer depending on its use: critical rev j'tais his gard dsastreuses after several costs in terms of impact and prcison.

However, used between 40Hz and 100Hz MAXIMUM, with HP in the near CHARACTERISTICS of JBL K151 which is the HP used the design of 4818 by Don Keele in 1977 and not the E145 out APRS that date (or 2240H offers the alternative era by DK). Well, better than the JBL 2242 Fane Colossus 18B present one, would be an RCF LF18N402 IDAL, second choice is possible with the 2242H Beyma 18G50, the L18S800 RCF, B & C 18TZB100 Fane Colossus and 18B-600.

To make a real serious stacks are four units ncessaires if we have a serious cut to 55Hz. Typing is good, inversely proportional to the prcison, which is normal for a bass bin. The high cut-off should really be 100Hz or less if the flag is reason parasites that make it really bad. Used in some discothques up to 160Hz with JBL E120 in Cabaret is so far the potential of this box to be remembered in 1977. It exists in diffrent brands as Don Keele ingnieur JBL's era had not been DPOS under the brand name of his employer because it was a request of a client factor enclosure that used HP JBL: these were Stage Accompany. It is also found in other client Atelier 33 HP JBL.

Use a minimum of two coupled, poses on the floor.
The ideal, 8 units per channel.
Directions for use: high-pass filtering 50 Hz, 2 units, or 40 Hz, 8 units, 18dB/octave
Lowpass filtering 250Hz Max, 18 24dB/octave. Au-del there will be a coloring inhrente this type of load.
Use of Hps quality (origin: JBL K151 now deprecated; JBL 2242 usable). Privilgier to loudspeakers strong BL, max 150g moving mass, the magnetic linear circuits. Including the JBL or RCF.
Not at all made for the sub, absolutely avoid the bowls and heavy membranes rsonance low.

In active filter sr well, with quality amp.

Why is this box?

Well when the sound shall be immediately used by seducing his punch and his place in the serious ridicule on the bass RFLEX or other direct radiation ... its flag on the right. At high power it is a slap phnomnale.
A bit like the B115 Martin (descending lower course) or former Turbosound, excellent vintage.
Costing a very lively, which is rediscovering the music!
Setbacks beyond mdaille: they are bulky and not descend very low frequencies.

A well used to obtain the quintessence.

Use a minimum of two coupled, poses on the floor.
The ideal, 8 units per channel.
Directions for use: high-pass filtering 50 Hz, 2 units, or 40 Hz, 8 units, 18dB/octave
Lowpass filtering 250Hz Max, 18 24dB/octave. Au-del there will be a coloring inhrente this type of load.
Use of Hps quality (origin: JBL K151 now deprecated; JBL 2242 usable). Privilgier to loudspeakers strong BL, max 150g moving mass, the magnetic linear circuits. Including the JBL or RCF.
Not at all made for the sub, absolutely avoid the bowls and heavy membranes rsonance low.

In active filter sr well, with quality amp.

Why is this box?

Well when the sound shall be immediately used by seducing his punch and his place in the serious ridicule on the bass RFLEX or other direct radiation ... its flag on the right. At high power it is a slap phnomnale.
A bit like the B115 Martin (descending lower course) or former Turbosound, excellent vintage.
Costing a very lively, which is rediscovering the music!
Setbacks beyond mdaille: they are bulky and not descend very low frequencies.

A well used to obtain the quintessence.