EQ's... why doesnt everybody have one?


Just browsing around the systems on this site, i knoticed that very few have equalizers. I realize some claim they introduce unacceptable noise but i would hardly call my Furman Q-2312, at %>.01 20Hz-40kHz, unacceptable. This $200 piece of equiptment ($100 on sale at musiciansfriend.com) replaces several thousand dollars in assembling a perfectly linear system in perfectly linear room, and in my opinion, accomplishes the task better than any room design could no matter how well engineered. It brought my system (onkyo reciever, NHT SB-3 speakers and Sony CD changer) to a level i could not have dreamed. It extends the SB-3's frequency response by at least 10 Hz to a satisfying 30 Hz without any rolloff or sacrifice in clarity, but the greatest improvement was definately in the Mid-range, around the SB-3s crossover frequency of 2.6kHz. The clarity of vocals, strings, guitars, brass... anything in this range rivals that of uneq'd systems costing well into the thousands of dollars... my total cost; $800. One of the more supprising differences is a marked improvement in immaging, it think this might have to do with eliminating several resonances in the right channel caused by my back wall (the left back wall has a curtain over it). The second my dad heard the difference he got on my computer to buy one for himself, he couldnt even wait to get back to his own, he then kicked me outa the listening chair and wouldnt get up for the better part of an hour.
-Dan-
dk89
Memeboy...I think you are right..."Many people are afraid of them because they could be used to make things worse and they are not confident in their abilities to know when things are better or worse". I have had equalizers before, but they never gave me the satisfaction that the DEQ2496 does.

I think that the reason that the DEQ2496 satisfies is the Real Time Display and the automatic equalization feature. You can turn on the white noise signal, see on the RTA how lumpy the frequency response is. Then, after pushing the EQ button, watch the high bumps slowly move down and the low spots move up, until the response is flat 20-20K (or matches some curve that you have set up). All the while you can listen to the changing signal. Then put on a recording and listen with the EQ in, and EQ out using the BYPASS button. As I said, it "does a job which needs to be heard to be believed".
The degredation in sound of a signal going through a $200 component should cancel any of the benefits of a high end system right?

The Parc is an exception since the electronic signal is going through high end internal components and shouldn't lose much right?

I'm just thinking out loud and searching for reactions to my statements. I haven't tested any of this.
I have to agree about the benefits of using EQ. I also use the Behringer DEQ2494 (kept completely in the digital domain) in a highly resolving system, and I can tell you that it does wonders. I run a Krell transport into the Behringer, then into a Muse 296 processer (I wasn't quite as impressed with the Behringer's on-board DACS), then into a BAT preamp all kept in a balanced configuration. I was using a Z-Systems RDQ-1 before the Behringer, but the Behringer has much more functionality and a much better interface than the Z-Systems, and I could not hear any difference as long as the Behringer is kept completely in the digital domain. I think the Behringer is so inexpensive because they sell so many since their primary market is the pro audio industry. Anyone with doubts (I certainly did) should try one for themselves.
Robm321: I too have not tested any of this but I know the destruction that just a cheapo IC can do when inserted from my line stage (Aesthetix Callisto Sig) to my amps (CAT JL-3 Sig). So I would expect far worse with an electronic instrument with penny-priced integrated circuits, capacitors, resistors, horribly regulated power supply and such.

What we ultimately might gain from a flatter frequency response, and thus perhaps more clarity and less muddiness, could also result in a great loss of many other refinements, e.g., low-level resolution, harmonic textures, etc. For me, these latter sonic attributes get me more attached to the music than having a perfect frequency response.

I have recently added 4 ASC tube trap columns behind my Soundlab speakers. The added degree of clarity in the mids and trebles brought on by this caught me off guard. And I lost none of the magic in my system that I had before. I plan to plot several response curves of my room with varying ASC traps and their locations to reduce the bass peaks as much as I can. Then I can evaluate the possibility of any added benefits from an active device like the PARC. And ultimately if the PARC does bring on even more clarity due to bass peaks reduction, but it interferes with the openness, textures and dimensionality that I had before, I will have to make a judegement call as to which way to go. Perhaps on some music material the benefits of the PARC will be the way to go and other times, not at all. Hearing how it sounds in bypass mode will be important too as there will be another pair of ICs in the loop even during this time.

I think we each need to determine this all for ourself. I just happen to be a decays and ambience fanatic and I do not want to lose what I have worked so hard to attain.

John
Jafox...I am sure you know the saying..."don't judge a book by its cover". You should not make assumptions about the DEQ2496 just because it costs $300. I, and a lot of other people, have been astonished by this device. I bought mine only for the RTA feature, not intending to use the EQ. But once I heard what it can do I was converted.