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- Path: sparky!uunet!pipex!warwick!uknet!cam-eng!91jcpk
- From: 91jcpk@eng.cam.ac.uk (J.C.P. Khoo)
- Newsgroups: rec.audio
- Subject: Re: Digital Amps -> next???
- Summary: Digital _Power_ Amps
- Message-ID: <1992Nov23.191010.24485@eng.cam.ac.uk>
- Date: 23 Nov 92 19:10:10 GMT
- References: <4310@cvbnetPrime.COM> <3340283@hpcc01.corp.hp.com>
- Sender: 91jcpk@eng.cam.ac.uk (J.C.P. Khoo)
- Organization: cam.eng
- Lines: 32
- Nntp-Posting-Host: club.eng.cam.ac.uk
-
-
- Didn't Wadia introduce about half a year ago a true digital _power_ amp that
- used multibit switching to achieve power levels (c.15V and 2A)? I was intrigued
- by this amp because unlike all the others it was truly digital with even the
- volume contol implemented digitally.
-
- On a less esoteric scale, Meridian (from Boothroyd Stuart) have always been
- proponents of digital. To this end, they have produced the D600 and D6000
- digital loudspeakers. The D600 has an internal Philips bitstream converter
- whiuch feed a conventional poweramp and Xovers to the drive units.
-
- The D6000 is another kettle of fish, it implements its Xover digitally with
- each unit having its own dedicated power amp optimised for its particular
- bandwidth and power requirements. To top it off, all the tone control and
- volume is implemented by DSP techniques.
-
- Meridian also have a digital preamp the 601 (if memory serves) which has
- extensive DSP capabilities (including RIAA EQ,Dolby ProLogic, KEF KUBE EQ
- settings, and others). It accepts no analogue inputs. To connect a record
- player, you have to purchase their corresponding ADC (608?) to give it a
- digital datatream.
-
- All these products have made good impressions under subjective review and have
- even prompted favourable comments from die-hard analogue reviewers listening
- to record players using the digital preamp and/or the digital loudspeakers.
-
- Philips have also introduced their versio of the digital loudspeaker, but
- details of this escape me at this moment.
-
-
- JOHAN KHOO - Cambridge University Engineering Department.
- Standard Disclamer - My opnions, not those of my school or pet rabbit.
-