[rcag_ils]

If anyone know how to hook this up , I'd like to hear it. The monster on the floor is a dual subwoofer in the same box, the electronic crossover is sitting on top. I've been using the satellite for a few years now, just got the optional sub for them. No manual for them.

[Wayner]

What is the brand?

Wayner

[rcag_ils]

Wayne, they are Sonographe, by Conrad Johnson, the subwoofer SW-1000 is almost non-existence, they did not sell a lot of them, consider the weight, it weighs 90lbs!!!!!!

I forgot to post the jack terminals on these, they are as follow:

Active crossover has inputs, all frequency output, high freq output, low freq mono output, and low freq stereo output.

The subwoofer itself, has two pair of speaker  terminals.

The satellites have one pair of speaker terminal on each, like the normal speakers.

I've heard the active crossover should be between the preamp and the amp, not sure if it's true.

Help.

[Brett Buck]

Wayne, they are Sonographe, by Conrad Johnson, the subwoofer SW-1000 is almost non-existence, they did not sell a lot of them, consider the weight, it weighs 90lbs!!!!!!

   A 90 lb subwoofer? What's it made of, aerogel?  Even my mains are quite a bit heavier than that.

    Brett

[Mark Korda]

rcag.ils,It looks like you will need a seperate amp for the bass.You said there are outputs for mono or stereo on the active cross over,I saw a power cord on it.On my cross over,I'm not using it right now (Ace model5000)you plug your cd player or turntable into the left and right inputs on the cross over.Then the left and right(High) outputs go to my main amp inputs(Dyna-35-17 watts a side for the high frequency monitors.The sub woofer outputs(low) mono or stereo go to your bass amp inputs.So the cd goes to the cross over,the cross over to the amps,and the amps to the preamp.There should be a bass or bass volume control on the cross over.By the way,I have a Marantz 500 mono 125 watt amp that would fit the bill.It's in brand new condition,not a scratch,I'll send a picture if your interested for 100 bucks.Iv'e set my system up a different way using a Bash class D Canadian amp from Parts Express that has it's own cross over........Mark Korda

[rcag_ils]

Mark, I am not sure if the source components should plug straight into the active crossover. Maybe I'll include a picture of what the back of the active crossover look like.

There's a bass level in front of the crossover. There's also a all frequency output in the back, that's what makes it confusing. Add to more confusion, there are only two pairs of speakers terminals on the subwoofer, unlike others have outputs that go to the satellite.

A 90lb sub is heavy enough for me, consider most sub nowaday is around 40 to 70lbs.

This is a rare sub, back in the days, most people would just buy the SL-21 monitor speakers, but if you wanted more bass, there's a SW-1000 for you, if the SW-1000 is too big and heavy, there's also a SW-500 sub, a single woofer unit. CJ didn't sell many of sub at all, most people were happy without it.




That's what's on the back.

[WC]

I am certainly not an expert at connecting active crossovers, but based on your information I can act like one.

The preamp outs from your preamp should go to the input RCA pair.
The connection to your amp to your satellite speakers can either be the All Freq. Output or the High Frequency Outputs depending on if you want to send the full signal to your speakers or not.

The low frequency outputs should go to a separate two channel amplifier  whose speaker connections are connected to the subwoofer.

Just ignore the mono low frequency outputs.

[rcag_ils]

The connection to your amp to your satellite speakers can either be the All Freq. Output or the High Frequency Outputs depending on if you want to send the full signal to your speakers or not.

What is the advantage and disadvantage of either?

The low frequency outputs should go to a separate two channel amplifier  whose speaker connections are connected to the subwoofer.

When CJ was promoting the Sonographe product line, there wasn't any indication that the sub would be driven by a separate amp. I am sure it could be done, but in CJ's ad at that time only showed one amp for the whole "oak panel" system. I am thinking the sub/sat can be used with just one amp, but how?

[WC]

The choice of sending the full freq. range or the high frequencies depends on how powerful the amp is and how much trouble the satellites have trying to reproduce bass frequencies.

These days most subs are separately or self powered with plate amps. Based on what you mentioned I think you would need a separate amplifier for the sub. If a sub was to be passive it would have 4 sets of speaker connections so you could run wire from the amp to the sub and then from the sub to the satellites. This would most likely be termed a passive sub. I used to own one like that, but it never worked right. Your active crossover box needs to have something drive the speaker inputs on the sub, since the RCA connections can't drive the sub. Does the sub have an amp in it or attached to the side?

I would give Conrad Johnson a call to see if they could answer any of your questions since there doesn't appear to be any info on these speakers and subs. Pictures of the back side of the sub wouldn't hurt also.

[Mark Korda]

Hi Rcag.ils,I was sitting in the pub last night and it came to me I was wrong before I got home and read your reply.You are right,you don't plug your music source into the active crossover.You plug your cd player,ect.,into your preamp first.Then using the law,input to output,or output to input.The preamp goes to the crossover,the crossover to your amp or amps(Bi-amping),then the amps to the speakers.Sorry for mixing you up!...sincerely Mark Korda.

[dlparker]

Hi Rcag.ils,I was sitting in the pub last night

At  first glance I misread this as "sitting in the tub" and I thought "OMG!  I hope he's using a wireless mouse/KB"..

[Elizabeth]

The crossover has RCA inputs and outputs. So it IS for between the preamp and amp. You will need two amps. One  amp for separate speakers, one amp (stereo) for the twin woofers in the sub box.
((The crossover is made for either using one woofer mono, or the twins, stereo)

IF the crossover was for after the amp, it would have SPEAKER connections. period.
No way can you use this full setup with one amp

[rcag_ils]

No way can you use this full setup with one amp

I have no manual for this, if a second amp is needed, how would one know what type of amp is suitable for this type of subwoofer?

[MaxCast]

give us a shot of the front.  Are there output adjustments or a balancer of some sort?

[Mark Korda]

Rcag,It looks like there are 2 speaker connections underneath the sub.Solid state is the most prefered when you go into the sub region.I'd say you need at least a 100 watts for starters and more if you can.There are some vacuum tube amps that might fit the bill but they would be very costly and not as tight on the bottom end.A good place to look is Parts Express.There catalog is on line.They say 100hz and downward the sound is non directional and that a mono amp could work,as your crossover says,but having a stereo amp covers all bases.......Mark Korda

[Mark Korda]

rcag,this might be stupid and you already know it,but if you use just 1 amp it gets plugged into the all frequency output and your preamp plugs into the inputs on the right...Mark K.

[WC]

Mark,

He still would need to connect to the 2 sets of speaker inputs on the sub and the two sets on the satellites. That would also put a lot of load on the main amp.

[Mark Korda]

WC,I thought of that after I replyed.Elizebeth was right too! Mistake number 2 on me.The only thing that I can think of is maybe running passive was a feature on the crossover if an amp went down and like someone said earlier the monitors were wired from the sub speaker terminals?Now I really got to go to the pub.I'll try and shut up,but someone must have the answer....Mark K.

[rcag_ils]

The front of the active  crossover has only one dual variable resistor for bass level adjustment. I'll try to get a pic later.

I cleaned the wood with Murphy wood cleaner, then gave the sub and the satellite a lemon oil treatment, and my God, I do not believe how nice they look,  it's just jaw-dropping, it really brings out the natural wood grain.

I am not sure if I can connect the satellite at where the sub terminals are.

My guess is preamp ---->active crossover---->power amp---->all freq----->sub woofer---->satellites  or

preamp ---->active crossover---->power amp---->low freq------->sub woofer
                                          ----->power amp---->high freq----->satellite

If I go the separate power amp route for the sub, I do have a 60 watts AVA Delta 120 that I can use.

But I need someone to confirm the hook up first.

[WC]

I think it should be the second one with two amps.