System Pictures & Description

[ThorstenL]

Konnichiwa,

I guess my turn.....

Here my wife tends her flowers on top of the Subwoofer. This is from the Bastanis Prometheus Kit, dual 12" custom made by Eminence (driver looks based on the Delta 12LF) and Thomessen Amplifier Module, crossover is at 50Hz (3rd Order) and there is LF EQ....

Behind my charming lady is one of the two open baffle speakers, Supravox 215 Signature Bicone on 15mm Acrylic baffle, plus loads of records.

Sayonara

[ThorstenL]

Konnichiwa,

Here my wife points out "Dis a serious Turntable brotha"....

Turntable is Acoustic Solid "Solid One" fitted with:

1) Origin Live Silver 250 Tonarm with Goldring Elite Silver Coil MC Cartridge

2) SME 3009 Series 2 (non-improved) with Denon DL103

3) Ortofon RS-212 Special with SPU-GTE

Below you see phonostage (DIY, S&B TX-103 MC Stepup, E810F Pentode driving S&B 600 Ohm RIAA EQ Unit, E810F Triode wired output), MF-Audio Prototype Passive Pre (with S&B TX-102) and Ack!dAck.

Below this the current "Transport", a Shanling CD T-100. I normally use a stock Heart/Marantz CD-6000 and at the bottom is the PSU for the Phonostage and a Steinmusic (Germany) mains conditioner for the Transport.

To the left a heavily modified DIY Hifisupply "Joplin" Amplifier and the other speaker. The Amp is IT coupled via a custom, high level S&B TX-101 and uses an S&B TX-896 and a E182CC (or 5687) as Driver, outputs can be 300B, 2A3 or 45, currently a pair of 45's per channel make great music. The whole Amp has no electrolytic caps (incl. PSU) and thePhonostage limits them to heaters and two per channels filtering the (fixed) bias.

Sayonara

[Bricolo]

Nice wallpaper

[ThorstenL]

Konnichiwa,

Other gear currently at hand includes:

Pair of Beauhorn R2.2 Revelation

Pair of Bastanis Prometheus Main Speakers

Pair of Tannoy Monitor Gold without Enclosures (I got rid of my Tannoy corner Yorks to please my wife, great results if you ask me).

I also await the return of the SHanling SACD Player (back to base for revisions) and have a Opera Cyber 30 2A3 SE Amp on order (will be modded for use with 45/2A3 & 300B as well)....

Previous residents are to numerous to list....

Sayonara

PS, cables are currently mostly Bastanis Memphis, I gave most of my own UBYTE Cables away to friends and cannot be arsed right now to make new ones, soon though generation 3 of all Ubytes will return with a vengence....

[Peter Daniel]

Originally posted by Guss
Is it an alu pipe, peice, thing we see behind your speakers ? what are they ?

http://www.diyaudio.com/forums/showt...1586#post41586

it'a an aluminum bottle of some sort. Belongs to my wife

The base is from different speakers I made http://www.diyaudio.com/forums/attac...=&postid=26654

I have more speakers than I can use

[Mark Hathaway]

Its quite a mess, but here it is: I've built most of the stuff myself, its a combind 2 channel and HT setup

Speakers are a 3 way I built a few years ago, i've just never added a finish to the chip board. They use a Heil AMT, best tweeter I've ever hard, a focal 5k413s and some lambda woofers.

Sub for home theatre is a peerles xls 12" with 2 passives in an extended bass shelf alignment, think about 80L box, 450g on each passive. -3db with no room gain I think was 16hz according to unibox. Driven by a tripath amp, delivering 1.2kw in bridged mode, but the driver never sees that much, think safe limit for the xls is about 600w peak, my litening levels don't come anywhere near this


Electronics are a plenty. Thats not all I have either, the pictures don't show everything. Its a biamped setup, built the xovers myself. Amps are a current feedback topology, best amp circuit I've ever heard. Built them using the best parts I could find, sankens, toshibas and NEC. Measurments on an Audio Precision System one show distortion almost off the bottom of the AP 1's scale, no odd order rising ****, freq response to about 900khz. 6-10pf in the feedback loop!!!

Dacs are my own design using the ad1896 ASRC and the ad1852, currently adding 3 spdif outputs to my dvd-a player.


Measurement system is all Bruel and Kjaer, using the 4133 mics.
Also using an ST Audio digital i/o system for my computer, 4 aes/ebu ins and outs.

Using a Tact RCS digital room correction processor and 6 bass traps, plus the room is full of a lot of stuff, which aids greatly with diffraction, only surfaces left of any concern are the floor and 14 foot high ceilings.

I'm quite happy with the sound, about 8 years of diy under my belt so far

Mark Hathaway

[Dommi]

Originally posted by Variac
Bastanis

It's some 12" Eminence driver. But from the photos it definately has some voodoo oil of some sort.......
Somehow I suspect it is a stock model that he modified..

Hy Variac,
whan you meen the pictures which i posted, than you are right. But not Bastanis modified them in that way, i was it. I varnished them with a lacquer called C37. Mr. Bastanis modified the speakers with an other oil, which is a verry good primer for
C37 ;-))

Regards Dommi

[ThorstenL]

Konnichiwa,

As I have the Bastanis Prometheus at hand for review and as I have been talking a lotv with Robert Bastanis I might maybe chip in here?

First, the Tweeter is Beyma CP-21 - one of the best affordable PA Tweeters IMHO.

The Woofers and Midranges are made by Eminence to RB's specs and have no direct equivalents, especially not the wideband driver. The woofer seems fairly close to teh Delta12LF.

The wideband driver is then further modified by RD using a special oil treatment of the cone to dampen breakup modes and with small foam disks around the cloth dustacap to further dampen the cones resonances. RB also recommends C37 lacquering the cones, I concur....

The woofers have their own 200W or so Amplifier Module from Thomessen and my own settings on that module are 50Hz X-Over Frequency for the Prometheus mains (and lower than that for my Supravox Baffles).

Lastly, the X-Over. The tweeter has a 1.22uF series capacitor. This means the tweeter beginns rolling off 1st order at around 18KHz. Some of this linearises the tweeters HF response, but as can be seen from the K&T Measurements the tweeter ross of quite substantially after plateu reaching down to around 8KHz. The 12" Wideband covers the rest and does so quite well, if I may say so.

Sayonara

PS, further discussions of my implementation of the Prometheus and other open baffles are here:

http://diyaudio.com/forums/showthrea...threadid=19883

[ThorstenL]

Konnichiwa,

While we are on the subject of systems, here is what makes background music (and Heart FM Wakeup show) in the bedroom.

The speakers where bought for next to nothing, 6.5" whizzerless Alnico magnet fullrange in a box made from Chipboard, sounds surprisingly good, especially after lacquering the cones with C37 and loosing the terrible grilles.

System is a little Goodmans all in one - around 3W RMS. Rounded off the edges of the PCB, repalced Electrolytic cap's with decent stuff from the "junkbox" and stripped the sleeving, C37 lacquered the PCB.

Speakecables are Silverplated, stranded copper in PTFE.

Resultant sound? More than a hind of the musicality from the "big" rig, only at the frequency extremes and when it comes to resolution and soundstaging is there a substantial loss, not something you'd notice while in bed.... ;-)

Sayonara

[Nielsio]

From 'dipoles for me? help me decide':

Kuei,

Could you inform us here with some more insights on your speakers? Could you maybe give some comparisons to other broadbanders (Jordan, Phy, larger Fostex-es, ??) and/or other systems (older Tannoy, Oris, ??).

And maybe a measurement would be interesting?

I am referring to the Supravoxes.

Thanks in advance.