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Old 9th December 2006, 06:38 PM   #11
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Quote:
Originally posted by Geoff H
Freddi, sorry to hear about your situation, makes me realise the value of my freedom.

I don't think this speaker is for you. Its a sound reinforcement unit. Not a hifi type. Probably fine on drums, but not sure about bass strings.


I don't think I have to convince Freddi that prosound gear is ideal for hifi.

Quote:
IMHO JBLs and similar come into there own in larger rooms or auditoriums. I nearly had my ears torn off by JBL ring radiators! HF horns in confined areas will do the same.
What if I told you that I'm running BMS ring radiators IN MY CAR? BMS in my car I've published response curves, and I can assure you, they won't "tear your ears off." JBL's ring radiators are manufactured by BMS btw. If you heard modern ring radiators that sounded like sh1t, I'll bet it was the venue or post-processing. The BMS drivers alone are exceptional.

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What you are looking for needs smooth response down to 40Hz, and good transient response, with high sensitivity. Regards, Geoff
Hmmmm sounds good.
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Old 10th December 2006, 12:20 AM   #12
Geoff H is offline Geoff H  Australia
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Hi Patrick, those ear tearing ring radiators were in a Hi-Fi shop owned by a friend way back in 1976. They may well be a different beast nowadays, but as they say, once bitten, twice shy. We used to say the should come with a warning sign. "Stand back!"

They were in the wrong environment. Even the Barcelonas sounded better in the factory out the back, the 511 horn needing room to breath.

I favour the 511s in the right room or out doors. I can't live with them, my rooms have never been big enough. Once you get back 20 feet or so, no problems.

We are probably in the JBL versus Altec Lansing match, but I think we would agree that the big advantage with the prosound gear, is acres of headroom.

Geoff
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Old 11th December 2006, 12:20 AM   #13
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Quote:
Originally posted by Geoff H


IMHO JBLs and similar come into there own in larger rooms or auditoriums. I nearly had my ears torn off by JBL ring radiators! HF horns in confined areas will do the same.




tube amp(s), the for the horns, please!
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Old 11th December 2006, 09:24 AM   #14
Geoff H is offline Geoff H  Australia
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No no no. Some transistor amps are fine on horns. I was thinking last night, (yes I know - dangerous)

At that point in history, when I made that observation, solid state amps were increasing in power. A lot took on a particular "edgyness" After several years of the then new "valves versus transistor wars", a reason was found for the different sound. Transient intermodulation distortion. Remember, in those days, the champion of o/p transistors were 2N3055s / 2N2955s. With an fT of 800 Khz.

That is possibly what we were hearing in the horns. Many speakers didn't reproduce that distortion.

Also, those amps were biased in the A-B region. With the efficiency of the horns, the amps were running in the crossover region, where distortion can be harsh.

I think tubes are better than S/S, but don't deny those people using S/S, the choice of horns. S/S gear has come a long way since then.

Geoff
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Old 11th December 2006, 09:45 AM   #15
Geoff H is offline Geoff H  Australia
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Patrick, I just checked that link to you BMS in the car. I am not one to have hi qual sound in the car. My view is it can distract you from driving.

However, I might measure the angle between the dash and screen in the morning. The 6" pioneers rattle the door linings with the EQ on.

How do they go with heat? It can get pretty hot there.

Geoff.
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Old 22nd December 2006, 10:04 PM   #16
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Quote:
Originally posted by Geoff H
Patrick, I just checked that link to you BMS in the car. I am not one to have hi qual sound in the car. My view is it can distract you from driving.

However, I might measure the angle between the dash and screen in the morning. The 6" pioneers rattle the door linings with the EQ on.

How do they go with heat? It can get pretty hot there.

Geoff.
Every speaker is in a compression chamber, so temperature is a fairly moot issue. They aren't exposed at all.
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Old 22nd December 2006, 10:17 PM   #17
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Quote:
Originally posted by freddi
specs on MP215 say 1.7Khz xover - whats a 2412 HF look like? what it sound like with pp-tubes or solid-state? - does it do a good drumkit with Billy Martin/whomever? my diy SET is only about 5W and I like 120dB peaks (near the speaker) any on-line better prices than Musician's "friend"?

http://www.jblproservice.com/pdf/MPr...ries/MP215.pdf
I'm surprised at how little I 'miss' the top octave with this speaker. If you look at the graph, it's completely M.I.A.

http://www.jblpro.com/mpro/PDF/MP215.pdf

Believe it or not, I have the JBLs on 'audiophile' speaker stands right now. The poor speaker stands look about as stable as a two-legged tripod. So this morning I picked up a big ol' 20" sonotube from White Cap. I am going to build a pair of subs for the JBLs, and put them on top.

:: PB ::
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