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Message started by AdamG on 01/01/21 at 16:21:35

Title: HR-1
Post by AdamG on 01/01/21 at 16:21:35

Looking to buy used HR-1. I have a jolida 805 tube amp. Is it enough to push that speaker?

Title: Re: HR-1
Post by Archie on 01/01/21 at 17:15:22

Adam, I have a pair that I haven't used since switching to F15s in big baffles over a year ago. They have been "anniversary" modified and are in walnut. I've kept them since with shipping I wasn't sure I could get what they are really worth. I'm open to offers but I'm not very motivated.

I have seen what look like good deals on these come up now and then but still few and far between. They are a fantastic speaker and I guess people like to hang on to them.

Title: Re: HR-1
Post by will on 01/01/21 at 17:56:25

AdamG,

Welcome! I could not find specs for an 805 Jolida....is it similar to a Jolida 801? If so, at 85 to 95 watts/8ohm, even with variations in measuring speakers and amps, seems you would have abundant power for HR1s.

Lucky for you that Archie might be willing to sell his. I was going to say also, it is pretty rare to see them come up.

It seems to me that Decware is careful/conservative about measuring, and the HR is rated:

92.5 dB with 1 watt at 1 meter
32Hz ~ 22kHz
4 ohm nominal impedance

They say minimum is 2 watts, but to me that is likely using a Decware 2 watt amp, which are known to feel more powerful than they measure, quite near field and/or small rooms, and maybe not terribly loud. My guess anyway.

I drive the HR1s with a Torii MKIV which is rated at 25 watts with stock tubes. I run mine a little lighter, using mellower tubes in several places. Also liking a ZBIT before a CSP3, then into the Torii, I can run into minor distortion a little earlier than using only one of these pre stages, so not sure of the ultimate Torii power the ways I use it. I suspect the ways the HR1s spread the sound with the top driver contributes, but that is part of what makes them a special speaker too.

My room is hard for me to calculate accurately since there are numerous segues with partial walls, but roughly 30ish x18ish x 9???). For my serous immersion listening, averages are from the high 70dBs into low 80s and occasional peaks into the mid/high eighties...very rarely near or above 90. If not a little careful, I can get minor drops into distortion on extra hard notes while doing my style of really serious listening. So I am somewhat on the edge headroom wise for hardcore immersion listening here, loud enough, but near the edge, so needing a little care when setting up a session. I never run into this except in really serious listening. And it has been a while since I tested it, but I don't think this edge happens when I am running only the CSP3 or Zbit in front, a choice I could easily make if headroom edge were a notable issue for me.

Hope this helps,

Will

Title: Re: HR-1
Post by AdamG on 01/01/21 at 18:32:58

Thank you for the quick response! I actually just found out about the speakers. I've been looking at the Ohm2000 for about a year and found this comparable to it. I'm going to reach out to Archie.

Title: Re: HR-1
Post by Lon on 01/01/21 at 19:01:44

I drive one pair of HR-1s with the SE84UFO3 monoblocks with Anniversary mods, and another pair (one of the last prototypes before production models were manufactured) with a Taboo Mk IV with Anniversary mods. I would think the Jolida would work fine.

Title: Re: HR-1
Post by Rivieraranch on 01/02/21 at 11:03:31

Y'all are forgetting that the anniversary modifications boosted the SPL on the HR1. I think this mod takes them up like 94db now.