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New Push-Pull 15" |
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Tony Wilkes 
Old Croc 
Joined: 02 August 2004 Location: West Midlands Status: Offline Points: 4835 |
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 Posted: 04 October 2011 at 12:34pm |
Exactly, he has convinced me to at least give it a go. |
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www.forteaudio.eu - BMS - db-Mark Processors - Lexon (SAE)
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soundchippy
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Joined: 09 September 2011 Location: Tavistock Status: Offline Points: 770 |
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Posted: 04 October 2011 at 6:54pm |
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any thought on whether this driver arrangement would yield any benefit to a double bp6?
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Tony Wilkes
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Joined: 02 August 2004 Location: West Midlands Status: Offline Points: 4835 |
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Posted: 04 October 2011 at 7:22pm |
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Different beast altogether, the sole purpose of a BP6 is to make use of the extra gain from the pass band loading. It results in a louder cab than a standard reflex but also comes with a downside.
The cab as shown is optimised for B6 loading which gives good extension in a compact enclosure but requires external processing to achieve this. The so called Push-Pull loading gives the advantage of lower 2nd and 3rd harmonic distortion which results in very clean bass. Group delay is also very low in this design. Tony |
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soundchippy
Young Croc
Joined: 09 September 2011 Location: Tavistock Status: Offline Points: 770 |
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Posted: 04 October 2011 at 7:37pm |
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i understand that. what i am curious about is whether the push/pull loading and a bp6 design could be married to create the best of both worlds. low distortion/group delay and higher output thanks to bp6 design.
think of it as having the slot area ported making it the front chamber. i'm not talking about using a b6 alignment. |
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Steve_B
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Joined: 29 September 2007 Status: Offline Points: 1592 |
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Posted: 04 October 2011 at 11:19pm |
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Tony I just saw push pull and though of an isobaric type come movement rather than push push where the air in the cabinet and V slot is compressed even if one of the drive units is reversed. |
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Tony Wilkes
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Joined: 02 August 2004 Location: West Midlands Status: Offline Points: 4835 |
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Posted: 05 October 2011 at 7:59am |
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It confused me at first but it does seem to have become a generic name for them.
Hope you are well mate, Tony |
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geez
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Joined: 02 October 2009 Location: Romford Status: Offline Points: 139 |
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Posted: 08 January 2012 at 12:44pm |
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Tony, I've spent some time reading up on these and the B6 alignment for a potential experimental project of my own so this is a really interesting post for me.
How would you do the required processing using a DCX? from what i've read you need +6db of gain at Fb with Q=2. The DCX only gives a Q adjustment on it's bandpass filter. If a potential B6 cab had an Fb of say 35Hz how would you set the low crossover point and an additional filter to correct it to flat? Cheers Tom |
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You don't always get what you pay for, but you always pay for what you get.
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neonogin
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Joined: 11 August 2004 Location: United Kingdom Status: Offline Points: 40 |
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Posted: 05 March 2012 at 4:45am |
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Looks very similar to the Ohm Pukk 212 / 215 / 218 box if you look inside.
http://www.ohm.co.uk/download/DATASHEET/PUKK-218%20Datasheet.pdf I wonder if that is B6 loaded too ??? |
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Tony Wilkes
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Joined: 02 August 2004 Location: West Midlands Status: Offline Points: 4835 |
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Posted: 05 March 2012 at 7:24am |
Yes AFAIK the Ohms are B6 slot loaded like djk's, they use great drivers as well :) Tony |
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Disco Stu
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Joined: 03 March 2005 Location: United Kingdom Status: Offline Points: 2492 |
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Posted: 05 March 2012 at 9:05am |
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Tony did you say you managed to squeeze 2x15" into 95l?
Stu |
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All you need to know is:
Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches |
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Tony Wilkes
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Joined: 02 August 2004 Location: West Midlands Status: Offline Points: 4835 |
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Posted: 05 March 2012 at 2:09pm |
Yes mate but that's net volume, the total volume of the box is larger because of the chamber. Actual box sizes are 750w x 500h x 550d. Tony |
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Chaps
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Joined: 19 October 2010 Location: Danmark Status: Offline Points: 58 |
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Posted: 16 April 2012 at 6:07pm |
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Did this box ever become reality?
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mykey- wrote: