whatever55

Tubes ???? OTL amp maybe ? Still using active for the Jubs ?

Will you be using an active crossover ? Am interested how that will sound ....

Interesting.... I am currently using McIntosh 252 with active dx38 and if would add tubes it would be to the top end.

Not to hijack this thread but how would this compare to VRD's ? Audio wise...

You missed my point. Passives can only cut energy, not boost it. The only "lo end boost" I read about was in the settings for the EV DX38. Maybe this was for the passives with the 9 volt battery ?????

Just some more information....... http://www.roger-russell.com/wire.htm

If Roy does not want them given out how can we get some made ? Will Roy build them ? Or will Klipsch sell them ? Bump Anyone..... Where is Roy ?

If Roy does not want them given out how can we get some made ? Will Roy build them ? Or will Klipsch sell them ?

What tube amps are used with Jubilees ? Anyone use an OTL from Bruce ?

Anyone with an OPPO. After playing a disc does it come out of the player warm to the touch ?

I will second that, I bought the Binaural set and they arrived quickly and as stated. Thanks Joe, (you have a PM)

If Roy is still around maybe if he is not too busy he can answer everyone's questions and help with some sales....

What did you upgrade to ??

Anyone coming to Buffalo, NY with a truck... or even halfway...

Not "a fair comparison" in what way ?

++ 1

How would these compare to 402's ? They would look better

Thank You whoever bought this.... You saved me a 9hr drive (one way)

Jason, I am still interested.... Where in Chicagoland area are you located. Asking because I plan on picking it up at your house if we make a deal. Have you repaired any of the "nicks" you told me about ? Mike T.

Just checked ebay and looks like they are about $50 +

Or you can try the setup in the pdf that only uses an additional rear speaker and an l-pad to control the level. The only thing is to read the directions to make sure your amp has a common ground. I have used that for years on and off and does add a little something.

Just a wild guess.... all analog with digital more filtering, processing, removing little pieces. Digital does sample at a certain rate no matter how high it still samples and that leaves out little pieces. I also get best results from LP's Pink Floyd, Black Sabbath ( with Ozzy )

http://www.sound.westhost.com/project18.htm Some more information

From Dynaco I have it in a PDF which shows the wiring diagram better. I could not post it properly. If you want it send me your email and I will forward it.

DYNACO 4-DIMENSIONAL SOUND SYSTEM The Dynaco 4-dimensional reproducing system fully utilizes the capacity of conventional 2-channel re­cording, transmitting and playback systems to pro­vide front-to-back, as well as left-to-right source localization. This technique is based on the principle of incorporating additional program channels of re­lated, but discreet information by means of sum and difference matrixing during the recording, and recov­ery of these signals by proper connection of a front speaker to reproduce the sum information, and a back speaker. to reproduce the difference information. At a time when numerous proposals for non-compatible recording and broadcasting concepts have been submitted by the manufacturers of "hard­ware", the Dynaco approach is unique in that it is fully compatible with present systems, is amazingly simple and inexpensive, does not obsolete existing equipment, and does not require any additional elec­tronic equipment whatsoever, It requires only the addition of loudspeakers to your present two channel stereo music system. A striking advantage of this system. is its ability to retrieve hitherto masked ambi­ence,. or "hall sound", and directional information from many present stereo recordings. This is exclu­sive with the Dynaco system demonstrating it's musi­cal and technical compatibility, and truly providing "something for nothing". These ambience effects, normally masked by the direct sounds in a conven­tional two speaker system, are revealed in the rear speaker because they are composed of randomly phased components. They will be most evident. in recordings which were made "live" with an audience, and where an additional distant microphone was used for ambience pickup. The compatibility of this technique is further emphasized when it is .appre-dated that even later transition to a fully independ­ent 4-Channel system, if desired, al. such time as standardization has been achieved, would not obso­lete anything purchased for the Dynaco system. Also, because the human brain locates in-phase material at the front, and out-of-phase information at the back of the head, a surprising degree of front-back directionality will be apparent when headphones are connected normally, and 4-dimensional material re­corded in consonance with the Dynaco system is reproduced in the normal stereo mode. A four corner speaker placement is popular with those more interested in directional sonic effects than in accurate music reproduction, Such an arrangement seems inconsistent with accepted musi­cal compositions .and programming, performed on a stage before you. I ho Dynaco four speaker arrange­ment achieves maximum playback realism, and.morc precise stereo imaging of soloists, with proper dis­tribution of available energy. An exclusive virtue is the ability to simplify this system without loss of significant musical content by eliminating the front speaker, if desired for reasons of simplicity, room planning dissimilar speakers, lack of the blend cir. cuit, or inability to connect amplifier grounds to­gether. The center front location is then synthesized by common information in the left and right speakers. A variation of this system is adaptable to four corner speaker locations if desired, too, with some loss of directional effect. It is .available on request. Any matrixing system (and it is generally con­ceded that some matrixing version is essential for compatibility with present recording and broadcast­ing facilities); requires precise phase control through­out the circuit, which in the Dynaco system includes the speakers. Thus best results are obtained when all speakers have identical efficiency, impedance and sonic characteristics, since individual level con­trols are not feasible. In any case the front speakers should have identical efficiency and impedance curves to maintain separation. The back speaker may be split into two units-, parallel or series connected, or back-to-back, if necessary. Because the Dynaco speakers were from the out­set designed with great concern for a smooth impe­dance curve within very narrow limits, they are par­ticularly suitable for such a system, The A-25 and A-50 have virtually identical characteristics; quite unique even among models from the same manu­facturer, Thtis an A-50 can be used at the center front where more of the energy is reproduced, for instance, with A-25s in the other locations. So sig­nificant is the added realism from many recordings that a matched system of four high quality moderate cost speakers, such as the A-25, can yield greater fidelity than a pair of far more costly systems. The most natural aural effects result when the back speaker is placed above the listener. More dra­matic directional effects are noticed when .this speaker is closer to the listener, but ambience is enhanced by a more distant location. You should realize that any 4-dimensional system necessarily restricts the listening. area more than a 2-channel system, and offsetting the balance control will re­duce separation, so proper placement of the listener is important. Where possible, the front speaker should be slightly more distant than the left and right speakers. The added benefits of 4-dimensional effects will often be most noticed in small rooms, where space restrictions were previously a signifi­cant handicap. The diagrams show the speaker connections for this system. The center front speaker is connected in series with the ground returns from the left and right speakers, and requires that the amplifier have 6 db of blending to maintain maximum separation at the speakers.' The back speaker is connected from the "hot" terminal of the. left amplifier to the "hot" terminal of the right amplifier. No connection is made from the back speaker to a ground terminal, Since the speaker impedance isolates the hot sides of the amplifier outputs, no amplifier damage will result from this connection. The common, or ground terminals of the amplifier outputs should be con­nected together.2 With many room layouts, it may be advisable to reduce the level 01 the back speaker with a series dwara INC 3060 JEFFERSON STREET, PHILADELPHIA, PA. 19121 IN EUROPE WRITE; DYNACO A/S HUMWM, STRUER, DENMARK 10 MC1.1170 Printed in U.S.A. put, The tone controls need not be flat, but should be identical in eacti channel. You can reposition the knobs on their shafts to indicate the center null position. Reconnect the center ground. Switch the preamplifier mode to the 6 db blend position. 3 The system is now balanced for 4-dimensional playback. The records listed below exhibit different char­acteristics, all of which add to the realism which has long been sought in recordings, but has here­tofore been lacking in playback. To observe this improvement, first play part of the selection with the back speaker switched out, and then add the back speaker while you remain in the same listening posi­tion. The back speaker switch is advisable when listening to noisy program sources too, since the noise may be more evident from this speaker. Note when the audience participates that the performers reSistor. A simple device which win dceoininociatu a wide range of speaker efficiencies iiind proximate locations is a 10 watt, 20 ohm slide-type variable resistor. The back speaker should face the listener, and its level should be set so that it is not obtrusive. To balance the four speaker system, use the fol- lowing procedure to null the back speaker: discon fleet the ground return from the .front, so the front speaker will be dead and the left and right speakers will be in a series connection which will be in parallel with the back speaker. Use the MONO mode on the preamplifier (A only or B only on the PAT-4; Mono on the SCA-80; A-FB on the PAS-3X). Play a record with the volume control at its most-used set­ting. Adjust the balance. control for minimum output through all speakers. Then adjust the tone controls -preferably to the flat settings-for minimum out- A&M Records SP-4199 Lee Michaels Side 2 "Heighty Hi" stay in front, and the audience is in the back. the beginning. Note how the sound of the chorus Angel SB-3739 Vaughan Williams "A Sea Symphony" Side 1 at Seems to fill the entire room when they sing; "Behold, the sea . "Spinning Wheel" Note how the instruments surround you, but the Columbia CS-9720 Blood, Sweat and Tears Side 2 voices remain in front of you. "K(.3ntakte" Especially note the directional effects toward Deutsche Grammophon SPLM-138811 Electronic Music Side 1 the end of this side. Pump and Circumstance", and Side 2 "Rule Brittania" Philips SFM-23033 The Last Night of the Proms Side 1 " Note how the audience joins in around you. "Amparito Roca" Note the applause at the end of the selection. RCA Victor LSC-2827 An Evening at the Pops Side I 1. The 6 db Of blending is equal in amplitude and opposite In polarity to the crosstalk which is intrOckited by the center (front) speaker connection, and thus cancels out the cross­talk and insures full separation at the speakers. 2. Some amplifier designs may exist which do not permit Cornrrion ground connections between the two channels. If the amplifier manufacturer puts no restrictions on ground connections, which is true of the majority of available ampli­fiers, no problems will arise. 3. This blend resistor Wynaco patent lt 3,417,203] is incor, porated in all Dynaco PAT-4 preamplifiers, all SCA.80 ampli, tiers, and in all PAS.2X and PAS-3X preamplifiers made since 1965. For 4-dimensional listening, the PAT-4 is switched to "A" and.-"B"; the SCA-80 is switched to the Blend position; and the PAS series prearnps are turned to the narrowest rectangle on the Blend switch. Technical consultation with the manufacturer of the amplifier or preamplifier will be necessary to determine the correct value and location of such a network for installation in other amplifier systems, In Dynaco PAS series preamplifiers supplied before 1966, the present resistors on the Blend Switch must be changed unless the unit has already been modified with the TC-3X kit. The 560 K ohms resistor between lugs #2 and #3 must be replaced with 68 K ohms, and the 270 K ohms resistor between lugs 4.3 and #4 must be changed to 33 K ohms. Use 10%, one-half watt resistors. Use this hookup with the Dynaco SCA-35 and other amplifiers which lack the "blend" facility. This arrangement requires the "blend" capability for maximum separation. BACK FRONT LEFT RIGHT tam. com. RIGHT LEFT, RIGHT COM. GUM. HOT LEFT Optional Resistor A NOTE OF CAUTION; Because the back speaker is in essence connected in parallel with left or right speakers when common information is present, some care should be exercised, particularly when the simpler 3,.speaker hookup is used, when employ­ing speakers whose impedance drops to very low values. Some solid state amplifiers may not safely be tiriven.to high power levels when speaker loads drop below 4 ohms. This is not a problem with Dynaco amplifiers and/or loudspeakers.