Building an Old School system based on DTH-1 and 415 Sub

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Dookie
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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Wed Aug 12, 2020 9:32 am

The CD horn eq should be in your digital crossover High out menu.
Doug

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Wed Aug 12, 2020 11:12 am

Only me but in general here is how I'd setup your system. (1) Put Pink Noise or music through a channel on the board. Make sure the channel strip EQ is set to flat or no boost or cut. (2) Have the house eq set to flat to start.

Have a 415 with a DTH-1 sitting on it and make this system right to start.

Now on your Crossover set the inputs to +3dbu. ( The crossover you have works well there ;-) )

Have the Low , Mid , and high outs on the crossover all the way down.

Have the Low , Mid and High amps input sensitivity knobs in the front all the way up.

Unplug all the speakers. Making sure the cables aren't in any way touching to short if your using 1/4 outs for anything.

Have the Main Fader on the Board to 0 db.

Bring up the Pink Noise or Music with good bass lines using the channel fader on the Desk until the 1st red light is flashing on the desk output meters. Of course don't be over driving or clipping the input to the Pink Noise/Music channel's input

Go to the Low Sub out on the crossover and bring it up until the Subs amp DDT/Clip lights just start to flash. (again with the speakers unplugged) Now TURN DOWN pink noise / music fader and plug the subs speaker cable back in. Bring up the Pink Noise/Music fader until the subs are working at a ok level. Doesn't have to shake the room.

Now go to the Mid Range out on the crossover and being it up until the Subs and Mid range blend. Too much Mid Range and it will sound honky, not enough and it will sound muddy.

Last go to the High out on the crossover and bring it up until the horns output matches with the midrange. I would use the CD Horn eq but that is me. It is a CD Horn. https://peavey.com/content--name-Horn-Equalization Remember with a CD Horn design the output goes down as the frequency goes up. Your horn is 12 db's down in output at 16 Khz.

Doug

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Wed Aug 12, 2020 11:23 am

Double.
Last edited by Dookie on Wed Aug 12, 2020 11:33 am, edited 2 times in total.

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Wed Aug 12, 2020 11:30 am

Also note if you have delay on your crossover outputs Peavey recommends .5ms of delay on your horn to get it in proper time alignment with the 10 inch midranges. I'd have the CD Horn eq on and the delay on. Last bring up the horn level. The .7 ms delay is for the subs used but not yours so I would leave the sub/mid delay at 0 or no delay

Doug
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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Wooferhound » Wed Aug 12, 2020 11:34 am

Oh Yeah
I'm not afraid of using the Horn-EQ
just was not using it for testing to see what the speakers do raw
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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Wed Aug 12, 2020 11:50 am

Wooferhound wrote:
Wed Aug 12, 2020 11:34 am
Oh Yeah
I'm not afraid of using the Horn-EQ
just was not using it for testing to see what the speakers do raw
Nice. So what is your first thoughts. Looking forward to the show? Feel it was worth it? There are days when I miss my QW-1's and DTH218b setup. Although my back doesn't!

Doug

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Wed Aug 12, 2020 12:05 pm

Frigging internet...
Last edited by Dookie on Wed Aug 12, 2020 12:08 pm, edited 1 time in total.

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Wed Aug 12, 2020 12:08 pm

Dookie wrote:
Wed Aug 12, 2020 12:05 pm
The low frequency limit for the DTH-1 is 115hz. 10's to Horn 1200hz.
I'd run the subs 45 to 125 hz.
Mid Range double 10's 125hz to 1200hz
Horns 1200hz to 16000 hz. Not sure where your 500hz came from?

Doug

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Wooferhound » Thu Aug 13, 2020 9:14 am

Well it is a 4-Way system with
18 inch
15 inch
10 inch
Horn

So all the crossover points will scale up to properly distribute the power.

When I rebuild 2 more of the 415's I may consider making a 3-way system out of it.
The crossover I am using is a Peavey V4X analog . Priced some VSX digital x-overs on eBay but they are too high for my small budget.
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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Thu Aug 13, 2020 2:12 pm

Wooferhound wrote:
Thu Aug 13, 2020 9:14 am
Well it is a 4-Way system with
18 inch
15 inch
10 inch
Horn

So all the crossover points will scale up to properly distribute the power.

When I rebuild 2 more of the 415's I may consider making a 3-way system out of it.
The crossover I am using is a Peavey V4X analog . Priced some VSX digital x-overs on eBay but they are too high for my small budget.

When providing sound for venues or certainly outside the hardest frequencies to reproduce are in the sub range. 40 to 120hz. The more surface area you have ( cones and wattage ) the easier it is.

4 - 15 inch drivers have 706.5 Square inches of surface area. 2 - 18 inch drivers have 508.68 square inches of surface area. The 4 - 15 inch drivers in the 415 have close to the same surface area of 3-18 inch woofers! ( less by only 60 square inches or so) Your better off to use them than the 18's.
Both the 415's and the 18's are not designed to go below 45hz or so. There is not spl or frequency response to gain by using the 18's

2nd problem. The 415 cabinet was not designed to go higher that 150hz. By going up to 600hz these higher frequencies will beam and cancel depending on frequency and driver interactions. A bad sounding system, no matter how loud , will sound worse that a system that is not as loud but has good even frequency response and most important even coverage. Also of course your throwing all the sub output that would be available from the 415 box ( about the same as 3 18 inch woofers ) and using the box as a mid range.

If you had to go 4 way I'd think about the 415's on the bottom going 45hz to 120hz. A single 18 inch woofer going from 120hz to 250hz or so (maybe 300hz) on its side on top of the the 415's. The 2-10 inch woofers in the DTH-1 going from 250hz to 1200hz ( or slightly higher 1600hz if need be ) then the horn going from there up. This will at least keep the speakers in the frequency bandwidth they were designed to run in.

If it was me I'd go 3 way. The 415's per side 45hz to 150hz if you want to push. The 2 10's in the DTH-1's 150hz up to the 1200hz to 1600hz range. The horns going from there. Then I'd but the 4 - 18 inch subs laid down in the center in front under the front lip of the stage ( or try beside the 415's if they couple ok ) Have the 4-18 inch woofers running in the same range as the 415's as well or 45 to 150 hz.

Up to you of course but I would again take a even sounding system with even sounding coverage over a loud one.
I wish I was close by I'd run over with my smaart system and set it up in a A/B setup. 1 side as you want it. The other as what I had in mind. It would be interesting to hear I'm sure. ;-) Again though its your system so do as you see fit.

Have fun and keep us posted!!

Doug

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Sat Aug 22, 2020 4:14 am

Have a good show today and post the results!

Doug

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Wooferhound » Thu Aug 27, 2020 12:51 pm

Dookie wrote:
Thu Aug 13, 2020 2:12 pm

If it was me I'd go 3 way. The 415's per side 45hz to 150hz if you want to push. The 2 10's in the DTH-1's 150hz up to the 1200hz to 1600hz range. The horns going from there. Then I'd but the 4 - 18 inch subs laid down in the center in front under the front lip of the stage ( or try beside the 415's if they couple ok ) Have the 4-18 inch woofers running in the same range as the 415's as well or 45 to 150 hz.
Yeah , I have 2 more of those 415 cabinets that just need a small Rewire and a Paint Job to make them into New Old Stock. That would be Four 415 boxes total.
Looked at some VSX electronic crossovers. I can find a VSX-26 for cheap, but the VSX-48 is out of my price range. Right now using all Analog Crossovers.

Sorry I haven't Updated you guys about my show
But it was Postponed till March because of the Virus
These bookings and cancellations happen to me all the time now
I expect the events to get moved or canceled

I called the Tinnitus Hotline and it just kept Ringing . . .
----- W o o f e r h o u n d -----

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Re: Building an Old School system based on DTH-1 and 415 Sub

Post by Dookie » Fri Sep 04, 2020 10:02 am

Wooferhound wrote:
Thu Aug 27, 2020 12:51 pm
Dookie wrote:
Thu Aug 13, 2020 2:12 pm

If it was me I'd go 3 way. The 415's per side 45hz to 150hz if you want to push. The 2 10's in the DTH-1's 150hz up to the 1200hz to 1600hz range. The horns going from there. Then I'd but the 4 - 18 inch subs laid down in the center in front under the front lip of the stage ( or try beside the 415's if they couple ok ) Have the 4-18 inch woofers running in the same range as the 415's as well or 45 to 150 hz.
Yeah , I have 2 more of those 415 cabinets that just need a small Rewire and a Paint Job to make them into New Old Stock. That would be Four 415 boxes total.
Looked at some VSX electronic crossovers. I can find a VSX-26 for cheap, but the VSX-48 is out of my price range. Right now using all Analog Crossovers.

Sorry I haven't Updated you guys about my show
But it was Postponed till March because of the Virus
These bookings and cancellations happen to me all the time now
I expect the events to get moved or canceled

I called the Tinnitus Hotline and it just kept Ringing . . .
Sorry your show got cancelled. It's nice to see the older Peavey gear still finding new life. Please do keep us posted when you get a chance to get them out! Doug

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