AudioCircle
Industry Circles => GR Research => Topic started by: Captainhemo on 10 Apr 2017, 06:34 pm
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Hopefully this will come in handy for folks wiring their H/W frame cabinets. Seems to be a need for a reference in regards to wiring the different layouts so figured I'd do a quick write up for each (maybe worth a sticky Danny ? )
In all these configurations, forward woofers are wired in phase, rearward woofers are wired out of phase.
In all cases, driver coils are wired in parallel, servo coils are wired in series.
For dialing in your subs once you've got them wired, here is a handy drawing (http://www.audiocircle.com/index.php?topic=151754.msg1622832#new) done by @THROWBACK that will help you keep a record of your settings.
Here is the wiring color coding for the different servo amps:
A370PEQ
Red:+
Black: -
Large pair for driver coil, small pair for servo coil
HX300
Black: +
Yellow: -
Due to the HX300's compact size, the wiring had to be small and flexible. IIf not careful, it can be difficult to differentiate between the driver / servo pairs so the driver pair has been wrapped with a black heat shrink.
HX800
The HX800 has 2 seperate sets of driver/servo outputs.
Black: +
Yellow: -
Red: +
Black: -
For both sets, large wires to driver coils, small wires to servo coils.
Find the example below that matches the layout you're building and follow the step by step instructions, I'll add some basic diagrams at some point but the instructions should be easy to follow.
DUALS WITH OPPOSED WOOFER (one forward, one backward)
Driver Coils
Big red lead from A370 to lower (backward) woofer - driver coil, then from there to upper (forward) woofer + driver coil.
Big black lead from amp to lower (backward) woofer + driver coil, then from there to upper (forward) woofer - driver coil.
Driver coil wiring done.
Servo Coils
Small red wire from amp to lower (backward) woofer - servo coil.
Run a wire from the lower (backward) woofer + servo coil to the upper (forward) woofer + servo coil
Finally, run the small black wire from the amp to the upper (forward) woofer - servo coil.
Servo coils done.
(http://www.audiocircle.com/image.php?id=161050)
DUALS WITH BOTH WOOFERS FACING FORWARD
Driver Coils
Big red lead from A370 to lower woofer + driver coil, then from there to upper woofer + driver coil.
Big black lead from amp to lower woofer - driver coil, then from there to upper woofer - driver coil.
Driver coil wiring done.
Servo Coils
Small red wire from amp to lower woofer + servo coil
Run a wire from the lower woofer - servo coil to the upper woofer + servo coil
Finally, run the small black wire from the amp to the upper woofer - servo coil.
Servo coils done.
(http://www.audiocircle.com/image.php?id=161051)
TRIPLES WITH ONE WOOFER FACING BACKWARD
Driver Coils
Big red lead from A370 to lower (forward) woofer ) + driver coil , then from there to middle (backward) woofer - driver coil, then on to upper (forward) woofer + driver coil.
Big black lead from amp to lower (forward) woofer - driver coil, then from there to middle (backward) woofer ) + driver coil. and finally to upper (forward) woofer - driver coil.
Driver coil wiring done.
Servo Coils
Small red wire from amp to lower (forward) woofer + servo coil.
Run a wire from the lower (forward0 woofer - servo coil to the middle (backward) woofer - servo coil.
Run a wire from middle (forward) woofer + servo coil to upper (forward) woofer + servo coil.
Finally, run the small black wire from the amp to the upper woofer - servo coil.
Servo coils done.
(http://www.audiocircle.com/image.php?id=160804)
TRIPLES WITH ALL 3 WOOFER FACING FORWARDS
Driver Coils
Big red lead from A370 to lower woofer + driver coil, then from there to middle woofer + driver coil, then on to upper woofer + driver coil.
Big black lead from amp to lower woofer - driver coil, then from there to middle woofer - driver coil. and finally to upper woofer - driver coil.
Driver coil wiring done.
Servo Coils
Small red wire from amp to lower woofer + servo coil
Run a wire from the lower woofer - servo coil to the middle woofer + servo coil.
Run a wire from middle woofer - servo coil to upper woofer + servo coil.
Finally, run the small black wire from the amp to the upper woofer - servo coil.
Servo coils done.
(http://www.audiocircle.com/image.php?id=161001)
Quds/6-Stacks
Use either the dual seups above for bottom2 and top 2 woofers of quads or, the triple examples above for bottom 3 and top 3 woofers of 6 stacks..
The bottom 2/3 woofers are powered by one A370PEQ or one of the HX800 modules, the top 2/3 woofers are powered by another A370PEQ or the 2nd module of the HX800.
Use the 4 pole connectors available from Danny to connect the amps to the 4 wires coming from the cabinets.
jay
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Great post Jay! :thumb: I agree it should be a sticky.
Best,
Ed
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Thanks for the clarification, Jay. I certainly expect to refer to this in the coming month as I start my servo-sub build. Great idea!
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If you're going to sticky it, might as well correct the misspellings. A simple spell check will easily find all of the ciol, coill, cooil, wooffer, fiannly, fainally, fromm and others. Visual proofing will be necessary to catch a few others not caught by spell check, such as double words (coming coming), etc.
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If you're going to sticky it, might as well correct the misspellings. A simple spell check will easily find all of the ciol, coill, cooil, wooffer, fiannly, fainally, fromm and others. Visual proofing will be necessary to catch a few others not caught by spell check, such as double words (coming coming), etc.
sorry man, should be better
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Excellent guide Jay, thanks for adding the pics, I am certain this will help many builders out. :thumb: :thumb:
Best,
Ed
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Very Very nice Jay, it is very kind of you to spend the time to do this for people. It can be very difficult to find the information in all of the threads. I bet a lot of people will be really happy to have access to this and I too think it should be a sticky.
I had to ask for someone to point me to where the diagram was because one wasn't included in the kit. Maybe Danny can use this to send out with all of his Servo Sub sales.
Thanks Jay :thumb:
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Great info. Thanks for taking the time to post.
Recommend to also add a reference to the HX 300 amps which use black and yellow wire.
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If I remember correctly, on the HX300 the black is the hot wire (same as red on A370 amps).
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Thanks Greg, I'll get the last diagram done soon as well.
Mike / Odal3, I'll have to double check that... I do know on the hx800's one set of leads is color coded one way, the other is reversed (black is neg then on the other set (other mono) it's different :scratch:
Ok, last wiring diagram posted .
Also got the wire color coding for the different amps from Brian (Rythmik) and added to the original post.
Jay
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Jay - Many thanks for confirming. Now I need to double check how I wired them up :D
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Jay, thanks again for putting this info together, I used it when wiring up my current project and it got me there correctly first shot, much appreciated.
I knew to look for this thread because I knew it existed, this thread should be made a sticky.
Best,
Ed
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Jay, thanks again for putting this info together, I used it when wiring up my current project and it got me there correctly first shot, much appreciated.
I knew to look for this thread because I knew it existed, this thread should be made a sticky.
Best,
Ed
+1
If you get these wired up incorrectly, either the servo coils or the driver coils, you will not get good results. If the driver coils are wrong you won't have much volume. If the servo coils are wrong the drivers can bottom out and/or the bass can be loose, flabby, or otherwise undesirable.
Mike
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Glad it helped Ed :thumb:
jay
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bump
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Danny,
Can you make this a sticky so it is easy to find?
Thanks,
Mike
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Thanks for this. I will definitely need it when I start assembling my triple OB sub.
It will be placed horizontally between the two front speakers, about half way between the listening position and the front wall...4ft each way. (it's literally the only place it can go).
Is there any benefit to going with 3 front facing woofers vs Front-Back-Front configuration?
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Mike, yeah, I bumped it as I get asked for help with these all the time and usually end up referring them to these schematics/step by step write ups I did way back.
Metfit77@g, driver orientation really dosn't change the sound quality... I've heard arguments for both options. Probably sending out about 98% of kits with all woofers facing forward. Just be sure to pay attention to the wiring differences
jay
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Thank you very much. This is one of my up coming projects and this will sure help out.
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I don't have the ability to sticky someone else's post. I'll have to copy it and re-post it.
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there are other stickies that were started by members.....
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there are other stickies that were started by members.....
Okay, I figured it out.
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Thanks, that’s going to be a big help to a lot of folks
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Okay, I figured it out.
Thanks bud
jay
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Hello, I am hoping someone can help me. I am hooking up a dual ob sub, but as opposed to the drawing, my top woofer is backward facing and the bottom is front facing. The driver coil section is fairly straightforward, but I'm confused as to how to wire the servo section.
Do I go servo amp (red) to red (bottom front facing), black (bottom) to red (top rear facing woofer), black to amp (black) ?
Or
Red (from amp) to Red (bottom), Black (bottom) to Black (top) , Red (top) to black from amp ?
Thanks in advance for your help.
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Hello, I am hoping someone can help me. I am hooking up a dual ob sub, but as opposed to the drawing, my top woofer is backward facing and the bottom is front facing. The driver coil section is fairly straightforward, but I'm confused as to how to wire the servo section.
Do I go servo amp (red) to red, black to red (top rear facing woofer), black to amp (black) ?
Thanks in advance for your help.
It's not that bad. If you flip a woofer then flip the polarity on both coils.
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Thanks
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First example on first post of this thread. There is a drawing of the terminals/wiring there as well.
"DUALS WITH OPPOSED WOOFER (one forward, one backward)
Driver Coils
Big red lead from A370 to lower (backward) woofer - driver coil, then from there to upper (forward) woofer + driver coil.
Big black lead from amp to lower (backward) woofer + driver coil, then from there to upper (forward) woofer - driver coil.
Driver coil wiring done.
Servo Coils
Small red wire from amp to lower (backward) woofer - servo coil.
Run a wire from the lower (backward) woofer + servo coil to the upper (forward) woofer + servo coil
Finally, run the small black wire from the amp to the upper (forward) woofer - servo coil.
Servo coils done.
"
jay
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hi all getting my stuff together to put a set of the duel subs together . wondering what is the best wire to use for these subs ? and i assume the run from the plate amp should be as short as possible . and what gauge is the best for them also. thanks all hope to post some pics when i get started. mark
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hi all getting my stuff together to put a set of the duel subs together . wondering what is the best wire to use for these subs ? and i assume the run from the plate amp should be as short as possible . and what gauge is the best for them also. thanks all hope to post some pics when i get started. mark
The wires from the amps are already connected to the amps. Ideally you want to connect these to the speaker. When You order the kit(s) you can get Danny's 16ga hookup wire and 4 pole Neutrik connectors. The female connectors goe on the speakers and the male connectors go on the amp wires.
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We never do it that way but it really doesn't matter.
Typically, we put the femaile connector in the hole that most customers have us pre-drill in the one end of the amp box(s). When we wire them, we usually cut the built in wire of the amp to just reach the female connector ( actually a bit longer to allow it to poke out of the hole and wire up the conector). Then, we leave a small run of the chosen wire out the rear of the sub ( it tucks away nice in the bottom joingt of the no rez. Then just add the male connector to the end of the pigtail.
We too typically use Dannys wire.... I think Tyson has had good results using a heavier guage siler wire, IIRC he even replaced the wiring from the amp..... still have yet to do this one.
jay
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I did use silver wire all the way back to the amp board. But very high quality copper would work too. The subs actually play up close to the midrange in my speakers so a generic “subwoofer cable” is not good enough IME. Use as good a wire on the sub as you use on the main speakers. Same with the subwoofer interconnects. High quality, don’t skimp.
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...a generic “subwoofer cable” is not good enough IME. Use as good a wire on the sub as you use on the main speakers. Same with the subwoofer interconnects. High quality, don’t skimp.
What do you recommend for subwoofer interconnects? Did you make your own?
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I do make my own. The KLE silver RCA connectors with the VH Audio OCC in foamed Teflon wire will get you an excellent cable for not too much $$.
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Easy Question for the Community but which I am flailing on, what size screws do you use to anchor in the woofers into the frame? I have tried 3 different wood screws without success. Am I missing something? What is ideal size and length? And is wood screw the answer or am I missing something? A shopping list would be great for these build outs for the amateurs like myself!
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The wood screws usually come in the package with the SW12 style drivers. Usually in a small plastic bag attached to the speaker.
None in the box?
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No I do not have them as I got these Used.
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Well, the ones that come with the woofers are a nice allen headed wood screw, approx 3/4" long (thread length). Although not the most common, they seem to be a #7 in size... you might get away with a #8 but it may be too large to pass through the woofer frame. Nice thing about the ones that come with the woofers are that the allen head fits inside the recess of the woofer flange, a typical wood screw, ispecially in the #8 size may not...
Might want to give Danny a call and see if he happens to have any lying around...
jay
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I'm planning to have the subs cabinets built by a local business here in uk. I'd like them to make boxes for the plate amps as well.
Does anyone knows the dimensions or perhaps has a drawing for those boxes? Is it fine to have them just as simple mdf boxes with some random holes for ventilation?
Thanks
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Amp cut out is 11 1/8 x 1/8 (A370PEQ/HX800). The HX300's are smaller and I can't recall of hand what the cutout zie is.
You need about 5" of height for clearence between the top and bottom edge of box frame
I liked the idea of some ventatlation although I am not sure it is required as I've seen these amps in non vented enclosures...... if you leave the bottom open and add some "feet" that should also do it.
jay
jay
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Thank you
A note for the website:
The cutout info is also available under: https://www.gr-research.com/store/p39/A370PEQ.html
But this page is not linked from the "main" subwoofert kit page, so a bit hard to find.
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Just finished my double stacked triples subs (6 drivers per side). Use my trusted 9V battery polarity tester to verify correct wiring.
I made this 15 years ago and it consists of a 9 volt battery, a intermittent button switch and leads out of the small (2X3" approx) project box
All driver go forward with + lead to red terminal. ALSO the servo coils will give forward motion with + to red (much less motion to 9V DC signal then main speaker coil).
Very simple trick. I have several complex systems and this tool gets used ALL the time.
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Amp cut out is 11 1/8 x 1/8 (A370PEQ/HX800). The HX300's are smaller and I can't recall of hand what the cutout zie is.
You need about 5" of height for clearence between the top and bottom edge of box frame
I liked the idea of some ventatlation although I am not sure it is required as I've seen these amps in non vented enclosures...... if you leave the bottom open and add some "feet" that should also do it.
jay
Rhythmik specifications on the A370PEQ state that the panel-front is sealed, so I put mine in a closed box, saw no reason invite dust and bugs inside.
Gary
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Thanks so much for this Jay - a freaking life saver for my H-frame OBS build.
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Thank you for this. It was very helpful for finishing up my dual drive H-frame sub.
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If the 4 pole connectors are ferrous why are you not using tube connectors ?
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If the 4 pole connectors are ferrous why are you not using tube connectors ?
Cost, mainly, but it's also only handling signals below 100Hz in most cases, where it's a lot less of an issue than it would be for a mid or tweeter Circuit.
Plus the Neutrik connector is also more secure as it's a locking connector.
You can also remove the connector altogether and solder the connections.
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I didn't want to start a new thread for this, so I'll ask here. What would be the best for a 18.5' x 13.5' x 7.5' room? A pair of doubles or triples? One corner of the room, the rear right, is slightly open to the rest of the house. The mains are set up along the short wall and I have total flexibility in sub placement. About how low will a pair of doubles or triples go in this room?