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Multi-Way Conventional loudspeakers with crossovers

field coil RCA 1428: a Chinese replica
field coil RCA 1428: a Chinese replica
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Old 26th August 2009, 03:21 PM   #1
Jmmlc is offline Jmmlc  France
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Default field coil RCA 1428: a Chinese replica

Hello,

Seems that Chinese replicate the RCA 1428:

http://www.lmaudio.net/html/lmaudio.html#

A Google antomatic translation gives:

"China's first excitation Alto Drive - 1428
- The RCA-1428 as a blueprint for a perfect reproducibility
- 1937 RCA to RCA-1428 produced the perfect "blueprint" to reproduce
- Using pure iron magnetic circuit, magnetic field excitation.
- Use the large 5.5-inch phenolic diaphragm,
- The unique design of turbine-type phase plug
- Equipped with 1.5-inch and 2 inch hose then (with ALTEC / JBL horn with such access)
Technical Data - Frequency Response: Bandwidth 400HZ-12kHz, (then 22A horn test 150HZ-10kHZ)

Sensitivity: 100dB, Impedance: 16Ω, Excitation: 300V / 60mA "

Best regards from Paris, France


Jean-Michel Le Cléac'h
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Old 27th August 2009, 02:08 AM   #2
JLH is offline JLH  United States
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Location: Indianapolis, IN
Okay, 120 views so far and no replys. I guess I'll be the first to bite on this.

It looks like a nice reproduction piece. I like the use of the phenolic diaphragm over that carbon fiber one that Cogent uses. The big question is what kind of cost is it, and how do you purchase them?

Rgs, JLH

Cogent carbon fiber cone below.

Click the image to open in full size.
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Last edited by JLH; 27th August 2009 at 02:18 AM. Reason: added picture
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Old 27th August 2009, 04:38 AM   #3
Paul Butterfield is offline Paul Butterfield
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Jean-Michel, John,

Hi guys! Yes, I'm still alive.

Same Questions. And a few more; Do they use an all phenolic cone diaphragm, or have they 'copied' Cogents?

Paul B
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Old 27th August 2009, 05:40 AM   #4
KCCT82 is offline KCCT82  United States
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LIST PRICE (about 20% off at dealers):

HT-70 (WE 597) is RMB 26000/pair (includes supply)
555 is RMB 13000/pair
1428 is RMB 22000/pair
BA-15 is RMB 20000/pair
22A Horn is RMB 26000/pair

You can try calling their Canadian distributor for English info...

LOYALTY SOUND LTD.
ALBERT YEUNG
(403)-2448838
1107-8TH STREET S.W.CALGARY,ALBERTA T2R 1L4
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Old 27th August 2009, 06:37 AM   #5
cbrunhaver is offline cbrunhaver  United States
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Location: Puyallup, WA
Well, those are pretty but, yikes! $3200 minus 20% is still ~$2500 / pair. Someone would really be taking one for the team to buy one of these (somewhat an unknown quantity) and check them out.
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Old 27th August 2009, 12:30 PM   #6
angeloitacare is offline angeloitacare  Brazil
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The LineMangetic Audio Design Lab product line were made known to a larger public a year ago through Srajan Ebaen, when he visited the Guangshou Audio Show. Out of curiosity, i contacted the company twice to know prices , but no response. Also their Canada importer and distributor didn't answer any email.

their field coil bass compression driver is unique indeed :

Click the image to open in full size.

some more pictures and links at my forum :

http://www.audiovoice-acoustics.com/...read.php?t=585
l

Last edited by angeloitacare; 27th August 2009 at 12:38 PM.
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Old 20th May 2011, 09:29 AM   #7
Willleung is offline Willleung  Hong Kong
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Join Date: May 2007
Quote:
Originally Posted by angeloitacare View Post
The LineMangetic Audio Design Lab product line were made known to a larger public a year ago through Srajan Ebaen, when he visited the Guangshou Audio Show. Out of curiosity, i contacted the company twice to know prices , but no response. Also their Canada importer and distributor didn't answer any email.

their field coil bass compression driver is unique indeed :

Click the image to open in full size.

some more pictures and links at my forum :

LineMagnetic Audiodesign Lab - Audio Voice Acoustics
l
the guy who run it probably couldn't speak english. saw some of their stuff on local forums, seems legit
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Old 20th May 2011, 01:08 PM   #8
oublie is offline oublie  United Kingdom
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Location: Northern Ireland
If i win the lottery i want those tube amps at the top of the page don't know if theyre any good but they look fantastic!
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Old 20th May 2011, 01:24 PM   #9
DavidL is offline DavidL  United States
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Quote:
Originally Posted by oublie View Post
If i win the lottery i want those tube amps at the top of the page don't know if theyre any good but they look fantastic!
If looks is all you care about, just build yourself some metal cabinets with some glowing tubes and have some Class D amps on the inside so at least they sound great. Lots cheaper than buying that stuff I assure you.
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Old 2nd October 2011, 02:55 PM   #10
mekr is offline mekr  India
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Default LM speakers

Has anyone tried their speakers like RCA and WE ,how do these sound and the price mentioned by Loyalty is after discount or before discount
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