Found this for 40$ locally, old Onkyo TX-SR605 WRAT receiver 90w min, 210w dynamic power
Using bi-amp with the speakers, so they have plenty of power.
I noticed a small improvement to dynamic, clearer, sharper high frequency & a small boost to bass definition,volume.
I think the mids sound about the same.
My even older receiver was TX-DS474 55w min (also had them bi-amp with this receiver).
I was thinking going with another old Onkyo I would get the same sound signature, but no. The not so perfect amplification of the TX-DS474(22 years old) gives the Klipsch this weird very musical tone, softer highs & longer bass notes.
From what I'm reading, the TX-DS474 is a basic differential amp where SR605 is negative feedback circuit with each channel having access to the full 780w power supply.
This negative feedback is tuned for stopping / stabilizing speaker return after moving & handling crazy impedance , phase swings.
The high current, helps with 3 ohm loads.
While 115db with the TX-DS474 is crazy loud but fun to listen to; 115db with the SR605 I can only describe it as getting hit with a shovel in the face at that high volume lol
Not sure what my post is about, I thought you guys might enjoy reading my noob review of these old amps with new rp-600m speakers.
I liked my TX-DS474 -60db +15db volume dial; this new amp 1 to 99 volume doesn't really tell me much and 1 to 40 steps are wasted ( too low volume output) .
Using bi-amp with the speakers, so they have plenty of power.
I noticed a small improvement to dynamic, clearer, sharper high frequency & a small boost to bass definition,volume.
I think the mids sound about the same.
My even older receiver was TX-DS474 55w min (also had them bi-amp with this receiver).
I was thinking going with another old Onkyo I would get the same sound signature, but no. The not so perfect amplification of the TX-DS474(22 years old) gives the Klipsch this weird very musical tone, softer highs & longer bass notes.
From what I'm reading, the TX-DS474 is a basic differential amp where SR605 is negative feedback circuit with each channel having access to the full 780w power supply.
This negative feedback is tuned for stopping / stabilizing speaker return after moving & handling crazy impedance , phase swings.
The high current, helps with 3 ohm loads.
While 115db with the TX-DS474 is crazy loud but fun to listen to; 115db with the SR605 I can only describe it as getting hit with a shovel in the face at that high volume lol
Not sure what my post is about, I thought you guys might enjoy reading my noob review of these old amps with new rp-600m speakers.
I liked my TX-DS474 -60db +15db volume dial; this new amp 1 to 99 volume doesn't really tell me much and 1 to 40 steps are wasted ( too low volume output) .
Last edited: