Bunker BPD 1 Power Drive 2 stereo in 4 stereo out driverack pa - AVS | Home Theater Discussions And Reviews
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post #1 of 21 Old 10-06-2013, 07:18 AM - Thread Starter
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I decided to try one of these as the dbx driverack pa + output number 3 does a poor stereo subwoofer job. Outputs one and two seem to work fine.
I liked it right away, as all four outputs work with subwoofer crossover settings. Not a bad unit at all that is not getting a lot of attention.
Great unit for setting up multiple subwoofer outs in stereo at selectable crossover frequencies.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
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post #2 of 21 Old 10-06-2013, 08:23 AM
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Interesting, new to me.

"Proudly designed and manufactured in the NAFTA region, made in Mexico."

Who are we?
Bunker Electronics is a company strongly committed to innovation, high-tech product development and strict quality standards. We are the first and, so far, the only Latin-American company to develop a 32 bit digital audio processor with all features required to operate a complete
professional audio system. Also, Bunker Electronics has been one of the first, and with best quality, professional audio company to develop an entire set of high efficiency Class D professional audio amplifiers at affordable price, with the latest technology available.


I'd like to get my hands on one, see it's flexibility.

Running a multi-sub rig thru one would be helpful. Myself, Ideally I would prefer a minimum 4x8, to run LCRs and LFE/RB thru the DSP. But if it's not transparent enough, I don't want my mains routed thru it anyway.

DSP processors like this (or a DCX2496) are powerful tools in a multi sub approach. Global EQ, with Individual delay, and even manipulation of low passing of each sub, really goes a long way toward achieving ideal acoustic summation at the LP.


Here's their press kit.

http://www.amazon.com/BUNKER-PowerDrive-BPD-1-Loudspeaker-Management/dp/B009Z72EU8

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post #3 of 21 Old 11-11-2013, 04:08 AM - Thread Starter
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They are not exactly busting into the American Market. 1 seller on ebay, seems to be the only distribution for USA , and Canada. Based on 3 months of use so far, its better than the DBX driverack pa, (for subwoofer duties), as all outputs will take a sub crossover setting.

The Driverack pa plus i used, the first two outputs took the low sub settings well, but the last output was letting higher frequencies through and didnt sound right. I assume dbx designed the third output for highs only, and never considered triple subwoofer outs.

The other thing i like about it is the standard black color, I like to see in my components.
Dbx now moved to silver which i think sucks. The face plates are designed to be removed easily, so I am surprised DBX does not offer optional color faceplates as add ons. So people can match their gear.

It would be interesting to hear about other units good for triple and quad subwoofer out.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
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post #4 of 21 Old 02-15-2014, 10:15 AM
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Does anyone have experience in using this as a 4-way system?

It does cost a bit more than dbx but an additional crossover point is what I am looking for.
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post #5 of 21 Old 02-17-2014, 01:22 AM - Thread Starter
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You will find the unit will do whatever 4 way response you want, in stereo and with only one unit.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
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post #6 of 21 Old 02-17-2014, 07:22 AM
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How does it compare with the mini-dsp in a box for the same price?

Output DAC section really clean? I read the specification, however I can't seem to find any actual users and/or test review data.

Also any knowledge on the plus version with the software?
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post #7 of 21 Old 02-17-2014, 12:49 PM - Thread Starter
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You can actually download the plus version software and try it without having the unit. It is a convienience thing with the usb as with any usb interfaced unit. I am using two of these units now, and I can tell you they are extremely sweet clean units, and you will not be sorry you bought one. I have never seen anyone sell a used one online ever. Everyone keeps these puppies. I had a dbx driverack pa plus before this and it is nowhere near as good!!!!. The extra outputs is like a 25 percent bonus also!!! . as you got two single input and 8 total output.

The Plus Bunker unit is just the same unit with USB interface.

Specs are over 118 db signal to noise, Texas instruments 96k Dacs, and your money at least stays in the NAFTA region with USA Parts. My opinion is its a hidden gem and you cannot go wrong with buying this unit.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
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post #8 of 21 Old 02-18-2014, 05:20 AM
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Can this unit do active crossovers, or is it just an standard 2 input EQ devise?

What advantages does this unit have over a MiniDsp?
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post #9 of 21 Old 02-18-2014, 03:46 PM
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Originally Posted by johnplayerson View Post

I have never seen anyone sell a used one online ever.

I never saw a new one until this thread; how long have they been available?

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post #10 of 21 Old 02-18-2014, 09:51 PM - Thread Starter
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I believe since around 2009. They certainly do not go out of their way advertising and marketing. I have only seen them for sale from one person on ebay who also sells them in larger quantity on Alibaba. I have a driverack pa + and it is currently for sale as these 8 output bunkers are much sweeter deal in my opinion, and all the outputs are truly independent and individually programable for anything, something the Driverack pa does not do. The specifications are actually a lot better too.

Marty you can set high and low pass crossover points anywhere you want, on every single output. You can even say set high and low pass to out on every output and use it as a distribution amp. Use every output for subwoofers with nothing else, or Every output with tops, Any crossover setting you want on any output. Plus you still got graphic eq, parmetric eq, compressor limiter, Gain control, sub synthesizer if you need it.

I know nothing about mini dsps, I like my units at least 19 inches wide to go with the rest of my gear.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
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post #11 of 21 Old 02-19-2014, 04:28 AM
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Quote:
Originally Posted by johnplayerson View Post

I believe since around 2009. They certainly do not go out of their way advertising and marketing. I have only seen them for sale from one person on ebay who also sells them in larger quantity on Alibaba. I have a driverack pa + and it is currently for sale as these 8 output bunkers are much sweeter deal in my opinion, and all the outputs are truly independent and individually programable for anything, something the Driverack pa does not do. The specifications are actually a lot better too.

Marty you can set high and low pass crossover points anywhere you want, on every single output. You can even say set high and low pass to out on every output and use it as a distribution amp. Use every output for subwoofers with nothing else, or Every output with tops, Any crossover setting you want on any output. Plus you still got graphic eq, parmetric eq, compressor limiter, Gain control, sub synthesizer if you need it.

I know nothing about mini dsps, I like my units at least 19 inches wide to go with the rest of my gear.

Is this unit capable of being an active crossover? Or just an EQ devise? I asked the following question in another thread, but I haven't checked to see if it's been answered yet, so I will re-ask here...what is the difference between graphic EQ and parametric EQ? Do you just adjust the sliders up and down in order to boost or cut certain frequencies? Can you post a screen shot of the EQ section and explain how you adjust the EQ portion of this unit?
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post #12 of 21 Old 02-19-2014, 07:38 AM
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Quote:
Originally Posted by Martycool007 View Post

Is this unit capable of being an active crossover? Or just an EQ devise?
Both.
Quote:
Originally Posted by Martycool007 View Post

what is the difference between graphic EQ and parametric EQ? Do you just adjust the sliders up and down in order to boost or cut certain frequencies? Can you post a screen shot of the EQ section and explain how you adjust the EQ portion of this unit?
A graphic has a fixed Q and centre frequency with only the amplitude adjustable. A parametric has all 3 adjustable which is much more useful.
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post #13 of 21 Old 02-22-2014, 08:13 PM - Thread Starter
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http://forums.prosoundweb.com/index.php?topic=137535.10

I found this thread, which includes the bunker dealer, adding about the bunker unit. He is pretty much saying 100 percent functionality and zero defects, and he is right in that it will do may more than a dbx driverack pa plus has more outputs. The bunker unit has built in parmetric equalizers on all 8 outputs, So if you want to try parametric it is there if you want it lol.

Yes there are a few dumb heads there who judged the product functionality and usefulness simply by making comments about the manual and the marketing LOL. Someone forgot to tell this guy about BOSE and how good there marketing is. A little less snake oil hype is fine by me. I tried the unit as it has 8 outputs, and the dbx driverack pa was crap in my opinion. After I tried the bunker I bought another one smile.gif)) Part of my problem is when i find something I like I buy at least 2 and sometimes 10:)

If you google it you will find a few more forums with some posts, but not many. If anyone decides to try one and doesnt like it I will straight trade you for a DBX driverack Pa plus, if you think that unit will serve you better.

The front panel is machine hole drilled for all the front leds. Pretty much exact same style as on the Cerwin Vega CV 5000 amplifier. Another bonus of the unit for me smile.gif)), as it matches my CV amps nicely.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
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post #14 of 21 Old 02-22-2014, 09:36 PM - Thread Starter
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http://www.redorbit.com/news/technology/1695393/bunker_electronics_improves_sound_quality_in_loudspeaker_systems_with_new/

Here is another article with links to the actual texas instruments 4 channel 118 db SN ADC and DAC's used in the unit

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
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post #15 of 21 Old 02-23-2014, 07:05 AM
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I'm really intrigued by these, I only wish they offered a 4x8 piece.

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------------------------------------
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(3)Seaton Cat12C up front, (4)QSC K8 sides/rears
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So with a single Bunker BPD-1 Power Drive, being that it has two inputs and 8 outputs, would it be possible to setup an active crossover for a stereo pair of 3-way speakers? I would assume that the answer is yes, although this might not be the most cost efficient way of setting up a stereo pair of active 3-ways.

I wish that it had two more inputs, that way you could use the first two inputs for a pair of active 3-ways, and then use the other two remaining inputs for EQ'ing a pair of subwoofers.

This thing cost more than a MiniDsp with at least 4 inputs and 8 outputs. What advantages does the Bunker BPD-1 have over the MiniDsp with a similar feature set?
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post #17 of 21 Old 03-17-2014, 07:12 AM
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Quote:
Originally Posted by johnplayerson View Post

The other thing i like about it is the standard black color, I like to see in my components.

Another overlooked black-faced digital speaker processor is the Carvin XD360. I keep hoping someone will give it a test run and tell us what they think about it. Wouldn’t be hard, since they have a 10-day no-questions return policy; you’d only be out the return shipping. I’ve been using a Carvin amp for my subs for a number of years now and have no complaints.

Regards,
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post #18 of 21 Old 03-18-2014, 02:52 PM
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Another overlooked black-faced digital speaker processor is the Carvin XD360. I keep hoping someone will give it a test run and tell us what they think about it. Wouldn’t be hard, since they have a 10-day no-questions return policy; you’d only be out the return shipping. I’ve been using a Carvin amp for my subs for a number of years now and have no complaints.

Regards,
Wayne A. Pflughaupt




Hey Wayne,
You're right, it's overlooked, ... as is most of their product line. Despite me being around some of the finest gear available at any one time, I've kept an eye on their product line. I've always appreciated their style and approach to value minded gear, and typically their stuff possesses as much or more value than nearly anyone.

Carvin, they were internet direct before internet direct was cool! A solid, USA operation.



I like their 3x6 DSP, I've used their GUI, it's better than a lot of similar software I've used. I too am contemplating picking one up, .. I only wish they offered a 4x8 piece.

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post #19 of 21 Old 12-10-2014, 10:59 PM - Thread Starter
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Quote:
Originally Posted by Martycool007 View Post
So with a single Bunker BPD-1 Power Drive, being that it has two inputs and 8 outputs, would it be possible to setup an active crossover for a stereo pair of 3-way speakers? I would assume that the answer is yes, although this might not be the most cost efficient way of setting up a stereo pair of active 3-ways.

I wish that it had two more inputs, that way you could use the first two inputs for a pair of active 3-ways, and then use the other two remaining inputs for EQ'ing a pair of subwoofers.

This thing cost more than a MiniDsp with at least 4 inputs and 8 outputs. What advantages does the Bunker BPD-1 have over the MiniDsp with a similar feature set?
Marty you only need one set of full signal going into the bunker. You can then put an amplifier channel on each output and do exactly what you just said. I use the units to do 4 way stereo subwoofer, which is not possible, with the DBX units. or other units are far as I can see. The output are all truly independent of each other. I have not been back for a while, but I have the internal pics for everyone )))

So what you would have is Left and right Line level input, and 4 channel stereo output. With a total of 4 amplifiers needed to do all 8 outputs, or more if you bridge for the subwoofers.

Simply adjust high and low pass filters for each tweeter, midrange, and woofer, and then adjust for subwoofer crossover high and low pass.

Then of course you still have 5 band parametric eq per way, 33 band graphic eq per way, compressor limter per way, etc, as well as a subharmonic synth available.

However you just said active three way speakers. If you have an active three way speaker with single built in amplifier there is no way to do a three way active crossover for them. You would need to bypass the internal amplifier, and cut all the wires to your speakers. After which you could tri amp, and use the active crossovers in the bunker.

What you are probably thinking about with having four inputs is using two full signal inputs for left and right stereo,
and using two more for subwoofer use. You no longer would need 4 outputs running to 4 inputs to do this. You would just use two main outputs, and connect to the two inputs on the bunker. Then you would run two outputs from the bunker to the inputs on your main powered speakers, and 2 to main amplifier or subwoofer. In this case you could use the equalizer, parametric eq, sub synth, compressor limiter, etc on your main speakers through the first two outputs. (You would not be able to use individual crossovers for each speaker driver, ie tweeter, midrange, and woofer, but you could use the crossover to block output signal in the low end that you only want going to your subwoofers rather than your mains). The other two outputs you could hook up your subwoofers , and use the sub synth, parameteric equalizer etc on your subs to fine tune them how you wish. Each output has a full complement of these items, so it is like having four stereo equalizers, four stereo parametric equalizers , four stereo sub synth, and four stereo active crossovers etc. The old days would require a big stack of individual items to do this.

Many like me use the built in 3 to 5 band parametric equalizers per output, to augment low frequency bass in the 30 hz and under range, that tends to drop off in output in most smaller rooms. These parametrics equalizers are actually better at the task than subwoofer synth, at fine tuning your bass.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.

Last edited by johnplayerson; 12-11-2014 at 08:08 AM.
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post #20 of 21 Old 12-10-2014, 11:04 PM - Thread Starter
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Quote:
Originally Posted by Wayne A. Pflughaupt View Post
Quote:Originally Posted by johnplayerson 

The other thing i like about it is the standard black color, I like to see in my components.


Another overlooked black-faced digital speaker processor is the Carvin XD360. I keep hoping someone will give it a test run and tell us what they think about it. Wouldn’t be hard, since they have a 10-day no-questions return policy; you’d only be out the return shipping. I’ve been using a Carvin amp for my subs for a number of years now and have no complaints.

Regards,
Wayne A. Pflughaupt



I was considering the Carvin 4 way digital equalizer at one time. Although I no longer need it, they have huge shipping costs to Canada and ship through the worst carrier in the world for international shipment, UPS.

They as well as many others could get there sales way up, by using puralotor like B and H, or DHL, like musicians friend.

Some people make good products, but do not know how to get them to the customer cheaply. Good thing a few companies are
catching on.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
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post #21 of 21 Old 12-10-2014, 11:19 PM - Thread Starter
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Correction. I put the unit back together and as my luck would have it, Lost the pictures in the transfer.

In any event the whole Bunker unit on the inside is made up of entirely surface mount devices, with only a couple mica type capacitors. It does have the usual
electrolytic can type capacitors on all the outputs, that in the long run, if you are handy with a soldering iron, you can change them out after the warranty is over.

All the internal capacitors are Lelon

http://www.badcaps.net/forum/showthread.php?t=9216

Some do not have a high opinion on these Capacitors, and I believe they may be rather new to the game.

22 25v 47uf caps (mostly input output caps with two caps on each input/output.
9 16v 470uf caps,
4 50v 10uf caps
4 25v 470uf caps
1 400volt 47uf cap (power supply)

The caps have been working fine for me and no issues with them yet. They are all 85 c caps. The handy of us may wish to change these out to a higher grade cap, just as an improvement and prevention task. They do not really have a rep yet, so it is too soon to say bad I think?
Bombelman likes this.

A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
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