JB Systems

(Originally written by asseoa/translated from Audiofanzine FR) Introduction I've been owning two Dynamo 250 scans for one month. I used them for two events. I controlled them via a DMX software. (no music mode!) I had previously used other models but it's difficult to compare them because they were rented high-quality products (Martin). ------------------------------------------------------ Summarized review: Pro: price!!! Pro: weight Pro: flightcase price Pro: nice gobos Pro: flood power and quality Pro: sweeping speed Pro: compact fixation system Con: only one wheel (gobos and colors not independent) Con: AC power socket on the bottom side (there's no way to place them upright...) Con: noise (but not louder than other models and it's inaudible once the music starts!) (I recommend you to use multiple socket outlets with power switches to avoid unnecessary noises before powering them up) Con: resolution!!! It's the major turnoff, in my opinion. I tell you why below. Con: strobe effect (more below) Con: impossible to switch between DMX and music mode via DMX programming ------------------------------------------------------ Regarding resolution: It isn't really a problem in strobe mode or with fast movements! Every scanner has a "resolution". It's the number of steps per movement. The Dynamo 250 has 167 horizontal steps and 40 vertical steps. So when you do a sweep from left to right you can see the image "jumping" from one step to another. The further the image the more it jumps, and the more the effect quality decreases... ok? So what I mean is that this scan has not enough steps. But you'll be the only one to notice it during an event! Regarding the strobe mode: The problem is the strobe function: It alternates the chosen gobo and the previous gobo on the wheel. As a consequence, if you are on gobo 5 and you turn on the strobe you'll see the flood changing from gobo 5 to gobo 4 instead of turning on an off. The real strobe only works with gobo 1. (alternate gobo 1 / gobo 0 = no flood) Could it be that every scan has this problem? I don't know... ------------------------------------------------------ Summary Good scans! Excellent for mobile applications. Light, easy to use, easy to transport in a flightcase, and affordable. I strongly recommend them! They'll bee a success at events!!!

I use this amp in a bi amp environment as bass amp 2x800/4Ohm. For upper mid/hi i use a lightweight switching power QSC PLX 1104 with 2x 550/4Ohm. X-Over is 2-way original from JB... I most cases i have to take the bass amp volume back some 3-4 steps, so that the overall sound is clear and rich without needing a graphic equalizer in free space. I do recording studio and PA since the 1980s and worked with nearly every amp on the market. I must admit that i did not know JB Systems before but i am totally satisfied many times in a year when i provide my own band, and Rock Bands around the Costa Blanca with good sound. I also have other lightweight amps like Carver, but for my feeling nothing affordable compares to a heavy Transformer conventional bass amp. So thats the price... you normally need a helping hand to move a biamp rack into the van if you dont wanna break your elderly back ;-) Klaus

The JB Systems compact is a 3 audio channel mixer with a DJ mic input with the ability to control your levels and talk over the music. It has 2 stereo channels as well as a headphones level control. This unit cost me about 140 USD , and I purchased it from Europe in 2008. I used it all the way through 2009 before reselling it. UTILIZATION The back of the unit is where the inputs are, Main AC adapter input, record output, master output, input channels and each input channel has two inputs for both channels, also a ground connection mainly for turntable connections. You can also purchase the JB systems compact LED Effects light to go with this mixer, it is perfect for a live setting or a show and it will show all the cool colors and light beams to your performance. SOUNDS The talk over function was one of the reasons that I was attracted to this mixer, you can automatically mute the first 2 input channels with you start talking through the DJ microphone. This is the best feature of this mixer to me. The manual was easy to understand, I only read English and it came in a few different languages but the English section was there, so that helped a lot. OVERALL OPINION But overall, this mixer comes at a great price. With the talk over function at this price makes it a must have in my opinion. There are a lot of different mixers on the market and a lot of them have the talk over function. But those mixers will cost you more than 140 USD. I am not sure if you can purchase this in a store in the US that is why the only place that I found it was online from Europe. So you may have to purchase it there as well.

(Originally written by lologone/translated from Audiofanzine FR) I've been using it for one month (3 events) and I find this effect truly amazing! In spite of the average look of its black housing, it's a very good effect without smog and an excellent effect with smog. It's the first LED effect I bought and it didn't disappoint me. It must be used in large rooms (super sweeping) with the integrated programs or DMX control (like me). They last pretty long (no need to replace the lamps) and don't overheat: perfect! I will certainly buy a second one to use it as slave for "private events". I will test it outdoor next summer! Cyclope video: The unit is placed 10 feet above the ground and the movie camera (mini DV) is placed 40 feet from the stage. The video is not very sharp due to the fog. Sorry... http://fr.youtube.com/watch?v=_m97s6nq-Qs http://www.impact-animation-diffusion.com

(Originally written by bbcharly/translated from Audiofanzine FR) I've been using my JB System Orion for over one month. The effects have a pretty broad range and they cover most of the room. Unfortunately I couldn't test it in DMX mode because I have no lighting console. All the guests who saw it in action loved it! It doesn't heat up at all. The value for money is excellent. I would buy it again with closed eyes but it's also true that I'm not very experienced. No scan nor yoke, only simple effects.