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Custom 105/2-based project
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gforse
Junior Contributor 20+


Joined: 25 Jan 2010
Posts: 24

PostPosted: Fri Jan 29, 2010 10:29 pm    Post subject: Reply with quote

looks very nice! Keep up the good work.! i'm curious at the final result! Very Happy Very Happy
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Lee in Montreal
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Joined: 22 Aug 2009
Posts: 203

PostPosted: Wed Feb 03, 2010 1:48 am    Post subject: Reply with quote

Cabinets have been dyed and then received two coats of clear. I will wet sandblock, then apply two much coats of clear. After sandblock, all the highlights will go away.


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Kef Calinda - since 1979
Kef Cantata - since 2009
Kef 105/2 - since 2009
Evo 105/2 - in the build
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Lee in Montreal
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PostPosted: Sat Feb 06, 2010 11:59 pm    Post subject: Reply with quote

I temporarely fitted the heads just for testing. I will then remove the drivers and sandblock the cabinets to remove the orange peel and lay two more coats of clear. The colour is indeed very bright. I like it...






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Kef Calinda - since 1979
Kef Cantata - since 2009
Kef 105/2 - since 2009
Evo 105/2 - in the build
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gforse
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Joined: 25 Jan 2010
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PostPosted: Sun Feb 07, 2010 3:13 pm    Post subject: Reply with quote

Very nice work! Very Happy

how does it sounds compare with the original. and you placed the b300 vertical does that sounds also better?

a little compare results with the original please???? Very Happy
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Lee in Montreal
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PostPosted: Tue Aug 03, 2010 5:35 pm    Post subject: Reply with quote

Little update of an ever going project. I have been using the custom bass cabinets as subs with the help of a Behringer CX3400 active crossover. They are fed by an ADCOM 5500 power amp. I have ordered some more XLR cables, and will soon tri-amp the bass cabinets and spare 105/2 heads with two Quad 405s and the ADCOM while the main speakers will be powered by a souped-up quad 606. Main speakers remain the original 105/2s for now. I have four B300B that will be used as four subs in the room's corners. It seems that crossing over the subs at 50-60Hz works well for getting a more physical sound. My basement has concrete floors with thin carpet. So, it does absorb a lot of the bass. The wide sofa is located right in front of the subs.


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Kef Calinda - since 1979
Kef Cantata - since 2009
Kef 105/2 - since 2009
Evo 105/2 - in the build
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proffski
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Joined: 22 Aug 2003
Posts: 1297
Location: Tewkesbury UK

PostPosted: Tue Aug 03, 2010 5:48 pm    Post subject: Reply with quote

I'm in awe, I am sure that the KEF fraternity are proud to have you on this forum.

Magnificent!
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Lee in Montreal
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PostPosted: Tue Aug 03, 2010 6:19 pm    Post subject: Reply with quote

Thanks for the good word. The most particular event in this whole experience is that since I have the crossover and the subs, I don't use my equalizer anymore. In my basement, all the original 105/2s needed was a bit of bottom end. Then the mids don't sound too upfront anymore and I don't have any tone control on the preamp. Everything is set to flat, except for the extra sub 60Hz reinforcement. I am sure that if I moved the 105/2s to another room they would sound completely different, not needing subs anymore.

I wish I could afford a Quad 520f, but for now the 606 will do the job for that little extra punch over the modded 405. I found the 606 to be faster and more lively than the 405.

Currently listening to the Soundtrack from Dennis Hopper's "Hot Spot". The only recording with Miles Davis and John Lee Hooker, with the help from Taj Mahal and Ry Cooder.

http://www.bikemag.com/news/massmedia/092305_hotspot/


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Kef Calinda - since 1979
Kef Cantata - since 2009
Kef 105/2 - since 2009
Evo 105/2 - in the build
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TL 200
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Joined: 27 Jul 2009
Posts: 141
Location: Emmer-Compascuum The Netherlands

PostPosted: Tue Aug 03, 2010 6:24 pm    Post subject: Reply with quote

I have four B300B that will be used as four subs in the room's corners. My basement has concrete floors with thin carpet. So, it does absorb a lot of the bass.

Must be a hell of a carpet Shocked
But eh... respect man, great job.
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Lee in Montreal
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Joined: 22 Aug 2009
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PostPosted: Wed Aug 04, 2010 8:38 pm    Post subject: Reply with quote

TL 200 wrote:
Must be a hell of a carpet Shocked


In this case, it is not the carpet that absorbs the mid and highs that is the problem, but the concrete floor itself. It doesn't bounce lower frequencies. It absorbs them...

BTW I reconnected my Quad 606 after extensive rejuvenation. That thing sounds so much better than even a modded 405.

It has 6 output transistors vs 2 for the 405, 60kµF caps vs 24kµF, a different grouding which results in no DC output (no pop on power on and off, no need for DC filter). The sound is so much faster and livelier. A few steps above the 405. Wink Currently looking for a Quad 520f.
_________________
Kef Calinda - since 1979
Kef Cantata - since 2009
Kef 105/2 - since 2009
Evo 105/2 - in the build


Last edited by Lee in Montreal on Wed Aug 04, 2010 11:03 pm; edited 1 time in total
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proffski
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Joined: 22 Aug 2003
Posts: 1297
Location: Tewkesbury UK

PostPosted: Wed Aug 04, 2010 8:56 pm    Post subject: Reply with quote

Interesting... when I had my KEF 104aBs the bass in my living room was dire, no matter what I tied with placement and positioning.
My floor is wooden suspended.

I once took my system to a friend’s with a similar sized room but concrete floor. Miraculously the bass reappeared with form, finesse and surprising extension.

Once back home it was back to low and poor quality bass.
I even once blamed the ceiling! The poor 104s just could not get their act together here at all. I even tried numerous stands and height above floor with usual attention paid to near walls and room corners.
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Lee in Montreal
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Joined: 22 Aug 2009
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PostPosted: Wed Aug 18, 2010 12:33 am    Post subject: Reply with quote

One short update. Active crossovers and multi-amping is a totally different planet from the old style passive crossovers. Wink
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Kef Calinda - since 1979
Kef Cantata - since 2009
Kef 105/2 - since 2009
Evo 105/2 - in the build
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proffski
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Joined: 22 Aug 2003
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Location: Tewkesbury UK

PostPosted: Wed Aug 18, 2010 10:08 am    Post subject: Reply with quote

Lee in Montreal wrote:
One short update. Active crossovers and multi-amping is a totally different planet from the old style passive crossovers. Wink


Multi Amping I feel made the greatest improvement.
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I contend that for a nation to try to tax itself into prosperity is like a
man standing in a bucket and trying to lift himself up by the handle.
-Winston Churchill
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