Emile

Awesome guys ... thanks a lot! Was ready to sell this ST-70 ... Haha; will keep it for a while Regards, Emile

Got a response from Bob Latino ... seems like the "attenuator" is slightly different from a "regular" volume control ... Quote The stepped attenuator is set between the input jacks and the driver board IN eyelets. Normally it blocks some of the voltage going to the driver board inputs. If you turn the attenuator all the way to the right, it is basically "out of the circuit". What goes into the input jacks goes directly to the input eyelet on the driver board. This is the best way to use the attenuator with a preamp. The attenuator does not give much increase in volume during the first 6 or 8 steps. At about 11 to 1 o'clock the volume will get louder. Using my own ST-70 with the attenuator, I find that about 2 to 3 o'clock the music gets very loud with the CD player I use. CD players all give out about 2 volts. The ST-70 only needs about 1.2 to 1.3 volts IN for full output of the amp. If you have a preamp, do what I mentioned above > If you turn the attenuator all the way to the right, it is basically "out of the circuit". Don't use BOTH the preamp and the attenuator to control volume if you have a preamp - just use the preamp to control volume and leave the attenuator turned all the way to the right. Unquote But still not sure why I don't get more than 88dB's

Thanks @jvs1670 and @wdecho ... yes; plenty of volume, but was trying "louder is better" with some Pro KP-3002's. When I use the ST-70, I have to go to 100/100% volume to get to 88dB's (yes; louder than my normal listening volume) ... but when I use a 35W vintage amp I get to 88dB at about 20% volume level ... and much more when I "turn it up." Just puzzled ... Thanks Cheers, Emile

Where do we send our orders?

@wdecho ... Thanks! Switched from a Dynaco PAT-4 to a JVC-3030 preamp. (Supposedly pretty good, but don't think it has any additional gain.) Sound is much better than the PAT-4 And ... sound from the ST-70 is excellent. But ... maybe I'm just using it wrong ... have the optional attenuator installed on it ... maybe this does NOT work like a regular volume pot? From Bob Latino's VTA site ... Quote A 21 step, stepped attenuator kit to install in place of the unused stereo/mono switch to allow you to use your ST-70 amp without a preamp !This is a great option if you only have one signal source for your ST-70 like a CD player. The attenuator may also be used WITH A PREAMP.If you turn the control all the way to the right there is complete pass through of the signal with no attenuation or alteration of the signal.You may also use the attenuator as a master level control to effectively reduce the gain of the amp. Unquote OK; will try it with the amp at 100% and "adjust" it with the pre-amp. Many thanks! Cheers, Emile

Rick, Thanks Will try to "dig into" it. Hopefully will get some more advise

Know this is an older thread, but did not want to start a "new" one. Any of you ST-70 builders ... are you getting enough output from this amp?? Running mine with a pair of Forte's and have to turn it way, way up (3 clicks) from max to get 85-90dB from my speakers (Compared to maybe 20% on the volume knob of my same wattage Marantz 1060) No clue Any thoughts are appreciated. Cheers, Emile

Best wishes to you and everyone in the area.

Looked at the listing ... not sure if they are original or home build copies. Also ... no clue, but think $3500 is way too much. The pair I was looking at (original, pristine and oak veneered) sold for $2800.

Haha ... nice drive ... Annapolis to Seattle?

Almost bought a veneered pair a couple of months ago ... they were "gone" when I got to the seller. They made several different models ... think those are the A7's. Some specs here ... https://www.cnet.com/products/altec-lansing-a7-the-voice-of-the-theatre-speaker/specs/ https://greatplainsaudio.com/altec-lansing-library/altec-lansing-voice-theatre-vott/

Oops ... send you PM ... thought they were Pro speakers ... disregard ... or not

YES! Will gladly pay someones gasoline money if they are going on "this trip" anyway Just got a pair of KP-3002's (from Miami - about 300 miles). Originally the seller's cousin was going to drop them off ... didnot work ... UPS and FedEx wanted $200 to ship them ... highway robbery ... finally got them shipped by USPS for $90 ... each box was ONE ounce below their 70 pound max Haha Cheers, Emile

Have always had a hard time finding specs ... especially for "discontinued" and Pro speakers. Link below will help " those looking for them." Just select "type" or whatever https://web.archive.org/web/20120116175507/http://www.klipsch.com:80/discontinued-kp-series-speakers

Cannot believe this ...posted over a day ago and not sold??? Have paid a helluva lot more for a helluva lot less These Boston people must have no clue They would be in my house NOW

No affiliation ... just in case someone is interested https://offerup.com/item/detail/505778831/

Just found a K510 horn with a K69 driver. SINGLE ... from the Museum sale. $300. No clue what I would do with a "single," but tempted. Just listing it in case someone else is interested Small package ... sure someone could pick it up and mail it

Awesome ... just found this thread and needed to comment ... really, really nice of all these people offering their "transport" help Can anyone pick these up for me and drop it of in the Tampa Bay, FL area? OK; sorry ... just joking ... could not resist Cheers, Emile

Believe @Schu was trying to keep them stacked as pairs ... then turn the top ones 10-15 degrees to see how that affects the sound Cheers, Emile

Haha ... great minds think alike My Heresy's are upside down on 904's

Haha ... a lot of "Klipsch nut's" here have "wall's of sound" ... stacked up higher and higher and wider and wider

Hi @ishwash ... yes; they will sound better as double, triples, etc ... Have not been to a concert where the performer had a single set of speakers As an upgrade to your "double" Super Heresy's, let me suggest the following ... (pic from owner/seller/member smashwuf) On a smaller scale, I've got Heresy's, Cornwall's, KPT-904's and (temporarily) KP-3002's all running at the same time. And @JohnJ ... "my neighbors" like it ... they come over (OK; free wine) when I turn it up Cheers, Emile

@dirtmudd ... Yes; that's the word I was looking for ... extremely DYNAMIC ... like them better than my Forte's. You have these??? Awesome ...

Hi John, Sub is in a different room But ... specs say 50Hz for these ... actually think they are better than my "32Hz" Forte's Cheers, Emile Edit ... correction 60Hz

YES! Build a sub with it and (for the money) it is excellent. The HO is a "high output" version better suited for "hip-hop automobiles." PE has them wrongly listed in some of their sub kits. Cheers, Emile